├── .gitattributes ├── .gitignore ├── LICENSE ├── README.md ├── assets ├── cache.jpg ├── model.png └── service.png ├── boardstar-async └── build.gradle ├── boardstar-lazy ├── build.gradle └── src │ └── main │ └── java │ └── org │ └── isel │ └── boardstar │ ├── BgaWebApi.java │ ├── BoardstarService.java │ ├── dto │ ├── CategoryDto.java │ ├── GameDto.java │ ├── GetCategoriesDto.java │ └── SearchDto.java │ └── model │ ├── Artist.java │ ├── Category.java │ └── Game.java ├── boardstar-streams └── build.gradle ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── settings.gradle ├── trabalho1.md ├── trabalho2.md ├── trabalho3.md ├── util ├── build.gradle └── src │ ├── main │ └── java │ │ └── pt │ │ └── isel │ │ └── mpd │ │ └── util │ │ ├── LazyQueries.java │ │ ├── Request.java │ │ └── iterators │ │ ├── IteratorFilter.java │ │ ├── IteratorGenerate.java │ │ └── IteratorMap.java │ └── test │ └── java │ └── pt │ └── isel │ └── mpd │ └── LazyQueriesTest.java └── webapp └── build.gradle /.gitattributes: -------------------------------------------------------------------------------- 1 | # 2 | # https://help.github.com/articles/dealing-with-line-endings/ 3 | # 4 | # These are explicitly windows files and should use crlf 5 | *.bat text eol=crlf 6 | 7 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Ignore Gradle project-specific cache directory 2 | .gradle 3 | 4 | # Ignore Gradle build output directory 5 | build 6 | 7 | # Ignore intelliJ metadata 8 | .idea 9 | 10 | # Ignore World weather key 11 | BGA_KEY.txt -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | Enunciados dos trabalhos de MPD no semestre de verão 2019/20 2 | 3 | * [Trabalho 1 - 18 de Março `-->` entrega **13 de Abril**](trabalho1.md) 4 | * [Trabalho 2 - 13 de Abril `-->` entrega **4 de Maio**](trabalho2.md) 5 | * [Trabalho 3 - ~~1~~ 15 de Maio `-->` entrega ~~1~~ **15 de Junho**](trabalho3.md) 6 | 7 | ## Actualizações: 8 | 9 | * **8-4-2020** - A parte 4 do enunciado do Trabalho 1 é opcional e poderá não ser 10 | entregue pelos alunos na data limite de submissão do trabalho. -------------------------------------------------------------------------------- /assets/cache.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/isel-leic-mpd/boardstar/dcf357fe5c3b21a479b338e1913bdf8fd984e6bd/assets/cache.jpg -------------------------------------------------------------------------------- /assets/model.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/isel-leic-mpd/boardstar/dcf357fe5c3b21a479b338e1913bdf8fd984e6bd/assets/model.png -------------------------------------------------------------------------------- /assets/service.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/isel-leic-mpd/boardstar/dcf357fe5c3b21a479b338e1913bdf8fd984e6bd/assets/service.png -------------------------------------------------------------------------------- /boardstar-async/build.gradle: -------------------------------------------------------------------------------- 1 | /* 2 | * This file was generated by the Gradle 'init' task. 3 | * 4 | * This generated file contains a sample Java Library project to get you started. 5 | * For more details take a look at the Java Libraries chapter in the Gradle 6 | * User Manual available at https://docs.gradle.org/6.2.2/userguide/java_library_plugin.html 7 | */ 8 | 9 | plugins { 10 | // Apply the java-library plugin to add support for Java Library 11 | id 'java-library' 12 | } 13 | 14 | repositories { 15 | // Use jcenter for resolving dependencies. 16 | // You can declare any Maven/Ivy/file repository here. 17 | jcenter() 18 | } 19 | 20 | dependencies { 21 | // Use JUnit test framework 22 | testImplementation 'junit:junit:4.12' 23 | } 24 | -------------------------------------------------------------------------------- /boardstar-lazy/build.gradle: -------------------------------------------------------------------------------- 1 | /* 2 | * This file was generated by the Gradle 'init' task. 3 | * 4 | * This generated file contains a sample Java Library project to get you started. 5 | * For more details take a look at the Java Libraries chapter in the Gradle 6 | * User Manual available at https://docs.gradle.org/6.2.2/userguide/java_library_plugin.html 7 | */ 8 | 9 | plugins { 10 | // Apply the java-library plugin to add support for Java Library 11 | id 'java-library' 12 | } 13 | 14 | repositories { 15 | // Use jcenter for resolving dependencies. 16 | // You can declare any Maven/Ivy/file repository here. 17 | jcenter() 18 | } 19 | 20 | dependencies { 21 | 22 | compile project(':util') 23 | compile 'com.google.code.gson:gson:2.8.6' 24 | 25 | // Use JUnit test framework 26 | testImplementation 'junit:junit:4.12' 27 | } 28 | -------------------------------------------------------------------------------- /boardstar-lazy/src/main/java/org/isel/boardstar/BgaWebApi.java: -------------------------------------------------------------------------------- 1 | /* 2 | * GNU General Public License v3.0 3 | * 4 | * Copyright (c) 2020, Miguel Gamboa (gamboa.pt) 5 | * 6 | * All rights granted under this License are granted for the term of 7 | * copyright on the Program, and are irrevocable provided the stated 8 | * conditions are met. This License explicitly affirms your unlimited 9 | * permission to run the unmodified Program. The output from running a 10 | * covered work is covered by this License only if the output, given its 11 | * content, constitutes a covered work. This License acknowledges your 12 | * rights of fair use or other equivalent, as provided by copyright law. 13 | * 14 | * You may make, run and propagate covered works that you do not 15 | * convey, without conditions so long as your license otherwise remains 16 | * in force. You may convey covered works to others for the sole purpose 17 | * of having them make modifications exclusively for you, or provide you 18 | * with facilities for running those works, provided that you comply with 19 | * the terms of this License in conveying all material for which you do 20 | * not control copyright. Those thus making or running the covered works 21 | * for you must do so exclusively on your behalf, under your direction 22 | * and control, on terms that prohibit them from making any copies of 23 | * your copyrighted material outside their relationship with you. 24 | * 25 | * Conveying under any other circumstances is permitted solely under 26 | * the conditions stated below. Sublicensing is not allowed; section 10 27 | * makes it unnecessary. 28 | */ 29 | 30 | package org.isel.boardstar; 31 | 32 | public class BgaWebApi { 33 | 34 | } 35 | -------------------------------------------------------------------------------- /boardstar-lazy/src/main/java/org/isel/boardstar/BoardstarService.java: -------------------------------------------------------------------------------- 1 | /* 2 | * GNU General Public License v3.0 3 | * 4 | * Copyright (c) 2020, Miguel Gamboa (gamboa.pt) 5 | * 6 | * All rights granted under this License are granted for the term of 7 | * copyright on the Program, and are irrevocable provided the stated 8 | * conditions are met. This License explicitly affirms your unlimited 9 | * permission to run the unmodified Program. The output from running a 10 | * covered work is covered by this License only if the output, given its 11 | * content, constitutes a covered work. This License acknowledges your 12 | * rights of fair use or other equivalent, as provided by copyright law. 13 | * 14 | * You may make, run and propagate covered works that you do not 15 | * convey, without conditions so long as your license otherwise remains 16 | * in force. You may convey covered works to others for the sole purpose 17 | * of having them make modifications exclusively for you, or provide you 18 | * with facilities for running those works, provided that you comply with 19 | * the terms of this License in conveying all material for which you do 20 | * not control copyright. Those thus making or running the covered works 21 | * for you must do so exclusively on your behalf, under your direction 22 | * and control, on terms that prohibit them from making any copies of 23 | * your copyrighted material outside their relationship with you. 24 | * 25 | * Conveying under any other circumstances is permitted solely under 26 | * the conditions stated below. Sublicensing is not allowed; section 10 27 | * makes it unnecessary. 28 | */ 29 | 30 | package org.isel.boardstar; 31 | 32 | public class BoardstarService { 33 | } 34 | -------------------------------------------------------------------------------- /boardstar-lazy/src/main/java/org/isel/boardstar/dto/CategoryDto.java: -------------------------------------------------------------------------------- 1 | /* 2 | * GNU General Public License v3.0 3 | * 4 | * Copyright (c) 2020, Miguel Gamboa (gamboa.pt) 5 | * 6 | * All rights granted under this License are granted for the term of 7 | * copyright on the Program, and are irrevocable provided the stated 8 | * conditions are met. This License explicitly affirms your unlimited 9 | * permission to run the unmodified Program. The output from running a 10 | * covered work is covered by this License only if the output, given its 11 | * content, constitutes a covered work. This License acknowledges your 12 | * rights of fair use or other equivalent, as provided by copyright law. 13 | * 14 | * You may make, run and propagate covered works that you do not 15 | * convey, without conditions so long as your license otherwise remains 16 | * in force. You may convey covered works to others for the sole purpose 17 | * of having them make modifications exclusively for you, or provide you 18 | * with facilities for running those works, provided that you comply with 19 | * the terms of this License in conveying all material for which you do 20 | * not control copyright. Those thus making or running the covered works 21 | * for you must do so exclusively on your behalf, under your direction 22 | * and control, on terms that prohibit them from making any copies of 23 | * your copyrighted material outside their relationship with you. 24 | * 25 | * Conveying under any other circumstances is permitted solely under 26 | * the conditions stated below. Sublicensing is not allowed; section 10 27 | * makes it unnecessary. 28 | */ 29 | 30 | package org.isel.boardstar.dto; 31 | 32 | public class CategoryDto { 33 | 34 | private final String id; 35 | private final String name; 36 | private final boolean checked; 37 | 38 | public CategoryDto(String id, String name, boolean checked) { 39 | this.id = id; 40 | this.name = name; 41 | this.checked = checked; 42 | } 43 | 44 | public String getId() { 45 | return id; 46 | } 47 | 48 | public String getName() { 49 | return name; 50 | } 51 | 52 | public boolean isChecked() { 53 | return checked; 54 | } 55 | } 56 | -------------------------------------------------------------------------------- /boardstar-lazy/src/main/java/org/isel/boardstar/dto/GameDto.java: -------------------------------------------------------------------------------- 1 | /* 2 | * GNU General Public License v3.0 3 | * 4 | * Copyright (c) 2020, Miguel Gamboa (gamboa.pt) 5 | * 6 | * All rights granted under this License are granted for the term of 7 | * copyright on the Program, and are irrevocable provided the stated 8 | * conditions are met. This License explicitly affirms your unlimited 9 | * permission to run the unmodified Program. The output from running a 10 | * covered work is covered by this License only if the output, given its 11 | * content, constitutes a covered work. This License acknowledges your 12 | * rights of fair use or other equivalent, as provided by copyright law. 13 | * 14 | * You may make, run and propagate covered works that you do not 15 | * convey, without conditions so long as your license otherwise remains 16 | * in force. You may convey covered works to others for the sole purpose 17 | * of having them make modifications exclusively for you, or provide you 18 | * with facilities for running those works, provided that you comply with 19 | * the terms of this License in conveying all material for which you do 20 | * not control copyright. Those thus making or running the covered works 21 | * for you must do so exclusively on your behalf, under your direction 22 | * and control, on terms that prohibit them from making any copies of 23 | * your copyrighted material outside their relationship with you. 24 | * 25 | * Conveying under any other circumstances is permitted solely under 26 | * the conditions stated below. Sublicensing is not allowed; section 10 27 | * makes it unnecessary. 28 | */ 29 | 30 | package org.isel.boardstar.dto; 31 | 32 | import java.util.List; 33 | 34 | public class GameDto { 35 | private final String id; 36 | private final String name; 37 | private final int year_published; 38 | private final String description; 39 | private final List categories; 40 | private final List artists; 41 | 42 | public GameDto(String id, String name, int year_published, String description, List categories, List artists) { 43 | this.id = id; 44 | this.name = name; 45 | this.year_published = year_published; 46 | this.description = description; 47 | this.categories = categories; 48 | this.artists = artists; 49 | } 50 | 51 | public String getId() { 52 | return id; 53 | } 54 | 55 | public String getName() { 56 | return name; 57 | } 58 | 59 | public int getYearPublished() { 60 | return year_published; 61 | } 62 | 63 | public String getDescription() { 64 | return description; 65 | } 66 | 67 | public List getCategories() { 68 | return categories; 69 | } 70 | 71 | public List getArtists() { 72 | return artists; 73 | } 74 | } 75 | -------------------------------------------------------------------------------- /boardstar-lazy/src/main/java/org/isel/boardstar/dto/GetCategoriesDto.java: -------------------------------------------------------------------------------- 1 | /* 2 | * GNU General Public License v3.0 3 | * 4 | * Copyright (c) 2020, Miguel Gamboa (gamboa.pt) 5 | * 6 | * All rights granted under this License are granted for the term of 7 | * copyright on the Program, and are irrevocable provided the stated 8 | * conditions are met. This License explicitly affirms your unlimited 9 | * permission to run the unmodified Program. The output from running a 10 | * covered work is covered by this License only if the output, given its 11 | * content, constitutes a covered work. This License acknowledges your 12 | * rights of fair use or other equivalent, as provided by copyright law. 13 | * 14 | * You may make, run and propagate covered works that you do not 15 | * convey, without conditions so long as your license otherwise remains 16 | * in force. You may convey covered works to others for the sole purpose 17 | * of having them make modifications exclusively for you, or provide you 18 | * with facilities for running those works, provided that you comply with 19 | * the terms of this License in conveying all material for which you do 20 | * not control copyright. Those thus making or running the covered works 21 | * for you must do so exclusively on your behalf, under your direction 22 | * and control, on terms that prohibit them from making any copies of 23 | * your copyrighted material outside their relationship with you. 24 | * 25 | * Conveying under any other circumstances is permitted solely under 26 | * the conditions stated below. Sublicensing is not allowed; section 10 27 | * makes it unnecessary. 28 | */ 29 | 30 | package org.isel.boardstar.dto; 31 | 32 | import java.util.List; 33 | 34 | public class GetCategoriesDto { 35 | private final List categories; 36 | 37 | public GetCategoriesDto(List categories) { 38 | this.categories = categories; 39 | } 40 | 41 | public List getCategories() { 42 | return categories; 43 | } 44 | } 45 | -------------------------------------------------------------------------------- /boardstar-lazy/src/main/java/org/isel/boardstar/dto/SearchDto.java: -------------------------------------------------------------------------------- 1 | /* 2 | * GNU General Public License v3.0 3 | * 4 | * Copyright (c) 2020, Miguel Gamboa (gamboa.pt) 5 | * 6 | * All rights granted under this License are granted for the term of 7 | * copyright on the Program, and are irrevocable provided the stated 8 | * conditions are met. This License explicitly affirms your unlimited 9 | * permission to run the unmodified Program. The output from running a 10 | * covered work is covered by this License only if the output, given its 11 | * content, constitutes a covered work. This License acknowledges your 12 | * rights of fair use or other equivalent, as provided by copyright law. 13 | * 14 | * You may make, run and propagate covered works that you do not 15 | * convey, without conditions so long as your license otherwise remains 16 | * in force. You may convey covered works to others for the sole purpose 17 | * of having them make modifications exclusively for you, or provide you 18 | * with facilities for running those works, provided that you comply with 19 | * the terms of this License in conveying all material for which you do 20 | * not control copyright. Those thus making or running the covered works 21 | * for you must do so exclusively on your behalf, under your direction 22 | * and control, on terms that prohibit them from making any copies of 23 | * your copyrighted material outside their relationship with you. 24 | * 25 | * Conveying under any other circumstances is permitted solely under 26 | * the conditions stated below. Sublicensing is not allowed; section 10 27 | * makes it unnecessary. 28 | */ 29 | 30 | package org.isel.boardstar.dto; 31 | 32 | import java.util.List; 33 | 34 | public class SearchDto { 35 | private final List games; 36 | 37 | public SearchDto(List games) { 38 | this.games = games; 39 | } 40 | 41 | public List getGames() { 42 | return games; 43 | } 44 | } 45 | -------------------------------------------------------------------------------- /boardstar-lazy/src/main/java/org/isel/boardstar/model/Artist.java: -------------------------------------------------------------------------------- 1 | /* 2 | * GNU General Public License v3.0 3 | * 4 | * Copyright (c) 2020, Miguel Gamboa (gamboa.pt) 5 | * 6 | * All rights granted under this License are granted for the term of 7 | * copyright on the Program, and are irrevocable provided the stated 8 | * conditions are met. This License explicitly affirms your unlimited 9 | * permission to run the unmodified Program. The output from running a 10 | * covered work is covered by this License only if the output, given its 11 | * content, constitutes a covered work. This License acknowledges your 12 | * rights of fair use or other equivalent, as provided by copyright law. 13 | * 14 | * You may make, run and propagate covered works that you do not 15 | * convey, without conditions so long as your license otherwise remains 16 | * in force. You may convey covered works to others for the sole purpose 17 | * of having them make modifications exclusively for you, or provide you 18 | * with facilities for running those works, provided that you comply with 19 | * the terms of this License in conveying all material for which you do 20 | * not control copyright. Those thus making or running the covered works 21 | * for you must do so exclusively on your behalf, under your direction 22 | * and control, on terms that prohibit them from making any copies of 23 | * your copyrighted material outside their relationship with you. 24 | * 25 | * Conveying under any other circumstances is permitted solely under 26 | * the conditions stated below. Sublicensing is not allowed; section 10 27 | * makes it unnecessary. 28 | */ 29 | 30 | package org.isel.boardstar.model; 31 | 32 | public class Artist { 33 | 34 | private final String name; 35 | private final Iterable games; 36 | 37 | public Artist(String name, Iterable games) { 38 | this.name = name; 39 | this.games = games; 40 | } 41 | public String getName() { 42 | return name; 43 | } 44 | 45 | public Iterable getGames() { 46 | return games; 47 | } 48 | } 49 | -------------------------------------------------------------------------------- /boardstar-lazy/src/main/java/org/isel/boardstar/model/Category.java: -------------------------------------------------------------------------------- 1 | /* 2 | * GNU General Public License v3.0 3 | * 4 | * Copyright (c) 2020, Miguel Gamboa (gamboa.pt) 5 | * 6 | * All rights granted under this License are granted for the term of 7 | * copyright on the Program, and are irrevocable provided the stated 8 | * conditions are met. This License explicitly affirms your unlimited 9 | * permission to run the unmodified Program. The output from running a 10 | * covered work is covered by this License only if the output, given its 11 | * content, constitutes a covered work. This License acknowledges your 12 | * rights of fair use or other equivalent, as provided by copyright law. 13 | * 14 | * You may make, run and propagate covered works that you do not 15 | * convey, without conditions so long as your license otherwise remains 16 | * in force. You may convey covered works to others for the sole purpose 17 | * of having them make modifications exclusively for you, or provide you 18 | * with facilities for running those works, provided that you comply with 19 | * the terms of this License in conveying all material for which you do 20 | * not control copyright. Those thus making or running the covered works 21 | * for you must do so exclusively on your behalf, under your direction 22 | * and control, on terms that prohibit them from making any copies of 23 | * your copyrighted material outside their relationship with you. 24 | * 25 | * Conveying under any other circumstances is permitted solely under 26 | * the conditions stated below. Sublicensing is not allowed; section 10 27 | * makes it unnecessary. 28 | */ 29 | 30 | package org.isel.boardstar.model; 31 | 32 | public class Category { 33 | private final String id; 34 | private final String name; 35 | private final Iterable games; 36 | 37 | public Category(String id, String name, Iterable games) { 38 | this.id = id; 39 | this.name = name; 40 | this.games = games; 41 | } 42 | 43 | public String getId() { 44 | return id; 45 | } 46 | 47 | public String getName() { 48 | return name; 49 | } 50 | 51 | public Iterable getGames() { 52 | return games; 53 | } 54 | } 55 | -------------------------------------------------------------------------------- /boardstar-lazy/src/main/java/org/isel/boardstar/model/Game.java: -------------------------------------------------------------------------------- 1 | /* 2 | * GNU General Public License v3.0 3 | * 4 | * Copyright (c) 2020, Miguel Gamboa (gamboa.pt) 5 | * 6 | * All rights granted under this License are granted for the term of 7 | * copyright on the Program, and are irrevocable provided the stated 8 | * conditions are met. This License explicitly affirms your unlimited 9 | * permission to run the unmodified Program. The output from running a 10 | * covered work is covered by this License only if the output, given its 11 | * content, constitutes a covered work. This License acknowledges your 12 | * rights of fair use or other equivalent, as provided by copyright law. 13 | * 14 | * You may make, run and propagate covered works that you do not 15 | * convey, without conditions so long as your license otherwise remains 16 | * in force. You may convey covered works to others for the sole purpose 17 | * of having them make modifications exclusively for you, or provide you 18 | * with facilities for running those works, provided that you comply with 19 | * the terms of this License in conveying all material for which you do 20 | * not control copyright. Those thus making or running the covered works 21 | * for you must do so exclusively on your behalf, under your direction 22 | * and control, on terms that prohibit them from making any copies of 23 | * your copyrighted material outside their relationship with you. 24 | * 25 | * Conveying under any other circumstances is permitted solely under 26 | * the conditions stated below. Sublicensing is not allowed; section 10 27 | * makes it unnecessary. 28 | */ 29 | 30 | package org.isel.boardstar.model; 31 | 32 | public class Game { 33 | private final String id; 34 | private final String name; 35 | private final int year; 36 | private final String description; 37 | private final Iterable categories; 38 | private final Iterable artists; 39 | 40 | public Game(String id, String name, int year, String description, Iterable categories, Iterable artists) { 41 | this.id = id; 42 | this.name = name; 43 | this.year = year; 44 | this.description = description; 45 | this.categories = categories; 46 | this.artists = artists; 47 | } 48 | 49 | public String getId() { 50 | return id; 51 | } 52 | 53 | public String getName() { 54 | return name; 55 | } 56 | 57 | public int getYear() { 58 | return year; 59 | } 60 | 61 | public String getDescription() { 62 | return description; 63 | } 64 | 65 | public Iterable getCategories() { 66 | return categories; 67 | } 68 | 69 | public Iterable getArtists() { 70 | return artists; 71 | } 72 | } 73 | -------------------------------------------------------------------------------- /boardstar-streams/build.gradle: -------------------------------------------------------------------------------- 1 | /* 2 | * This file was generated by the Gradle 'init' task. 3 | * 4 | * This generated file contains a sample Java Library project to get you started. 5 | * For more details take a look at the Java Libraries chapter in the Gradle 6 | * User Manual available at https://docs.gradle.org/6.2.2/userguide/java_library_plugin.html 7 | */ 8 | 9 | plugins { 10 | // Apply the java-library plugin to add support for Java Library 11 | id 'java-library' 12 | } 13 | 14 | repositories { 15 | // Use jcenter for resolving dependencies. 16 | // You can declare any Maven/Ivy/file repository here. 17 | jcenter() 18 | } 19 | 20 | dependencies { 21 | // Use JUnit test framework 22 | testImplementation 'junit:junit:4.12' 23 | } 24 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/isel-leic-mpd/boardstar/dcf357fe5c3b21a479b338e1913bdf8fd984e6bd/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | distributionBase=GRADLE_USER_HOME 2 | distributionPath=wrapper/dists 3 | distributionUrl=https\://services.gradle.org/distributions/gradle-6.2.2-bin.zip 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env sh 2 | 3 | # 4 | # Copyright 2015 the original author or authors. 5 | # 6 | # Licensed under the Apache License, Version 2.0 (the "License"); 7 | # you may not use this file except in compliance with the License. 8 | # You may obtain a copy of the License at 9 | # 10 | # https://www.apache.org/licenses/LICENSE-2.0 11 | # 12 | # Unless required by applicable law or agreed to in writing, software 13 | # distributed under the License is distributed on an "AS IS" BASIS, 14 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 | # See the License for the specific language governing permissions and 16 | # limitations under the License. 17 | # 18 | 19 | ############################################################################## 20 | ## 21 | ## Gradle start up script for UN*X 22 | ## 23 | ############################################################################## 24 | 25 | # Attempt to set APP_HOME 26 | # Resolve links: $0 may be a link 27 | PRG="$0" 28 | # Need this for relative symlinks. 29 | while [ -h "$PRG" ] ; do 30 | ls=`ls -ld "$PRG"` 31 | link=`expr "$ls" : '.*-> \(.*\)$'` 32 | if expr "$link" : '/.*' > /dev/null; then 33 | PRG="$link" 34 | else 35 | PRG=`dirname "$PRG"`"/$link" 36 | fi 37 | done 38 | SAVED="`pwd`" 39 | cd "`dirname \"$PRG\"`/" >/dev/null 40 | APP_HOME="`pwd -P`" 41 | cd "$SAVED" >/dev/null 42 | 43 | APP_NAME="Gradle" 44 | APP_BASE_NAME=`basename "$0"` 45 | 46 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 47 | DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' 48 | 49 | # Use the maximum available, or set MAX_FD != -1 to use that value. 50 | MAX_FD="maximum" 51 | 52 | warn () { 53 | echo "$*" 54 | } 55 | 56 | die () { 57 | echo 58 | echo "$*" 59 | echo 60 | exit 1 61 | } 62 | 63 | # OS specific support (must be 'true' or 'false'). 64 | cygwin=false 65 | msys=false 66 | darwin=false 67 | nonstop=false 68 | case "`uname`" in 69 | CYGWIN* ) 70 | cygwin=true 71 | ;; 72 | Darwin* ) 73 | darwin=true 74 | ;; 75 | MINGW* ) 76 | msys=true 77 | ;; 78 | NONSTOP* ) 79 | nonstop=true 80 | ;; 81 | esac 82 | 83 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 84 | 85 | # Determine the Java command to use to start the JVM. 86 | if [ -n "$JAVA_HOME" ] ; then 87 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 88 | # IBM's JDK on AIX uses strange locations for the executables 89 | JAVACMD="$JAVA_HOME/jre/sh/java" 90 | else 91 | JAVACMD="$JAVA_HOME/bin/java" 92 | fi 93 | if [ ! -x "$JAVACMD" ] ; then 94 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 95 | 96 | Please set the JAVA_HOME variable in your environment to match the 97 | location of your Java installation." 98 | fi 99 | else 100 | JAVACMD="java" 101 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 102 | 103 | Please set the JAVA_HOME variable in your environment to match the 104 | location of your Java installation." 105 | fi 106 | 107 | # Increase the maximum file descriptors if we can. 108 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then 109 | MAX_FD_LIMIT=`ulimit -H -n` 110 | if [ $? -eq 0 ] ; then 111 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 112 | MAX_FD="$MAX_FD_LIMIT" 113 | fi 114 | ulimit -n $MAX_FD 115 | if [ $? -ne 0 ] ; then 116 | warn "Could not set maximum file descriptor limit: $MAX_FD" 117 | fi 118 | else 119 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 120 | fi 121 | fi 122 | 123 | # For Darwin, add options to specify how the application appears in the dock 124 | if $darwin; then 125 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 126 | fi 127 | 128 | # For Cygwin or MSYS, switch paths to Windows format before running java 129 | if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then 130 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 131 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 132 | JAVACMD=`cygpath --unix "$JAVACMD"` 133 | 134 | # We build the pattern for arguments to be converted via cygpath 135 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 136 | SEP="" 137 | for dir in $ROOTDIRSRAW ; do 138 | ROOTDIRS="$ROOTDIRS$SEP$dir" 139 | SEP="|" 140 | done 141 | OURCYGPATTERN="(^($ROOTDIRS))" 142 | # Add a user-defined pattern to the cygpath arguments 143 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 144 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 145 | fi 146 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 147 | i=0 148 | for arg in "$@" ; do 149 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 150 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 151 | 152 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 153 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 154 | else 155 | eval `echo args$i`="\"$arg\"" 156 | fi 157 | i=`expr $i + 1` 158 | done 159 | case $i in 160 | 0) set -- ;; 161 | 1) set -- "$args0" ;; 162 | 2) set -- "$args0" "$args1" ;; 163 | 3) set -- "$args0" "$args1" "$args2" ;; 164 | 4) set -- "$args0" "$args1" "$args2" "$args3" ;; 165 | 5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 166 | 6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 167 | 7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 168 | 8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 169 | 9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 170 | esac 171 | fi 172 | 173 | # Escape application args 174 | save () { 175 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done 176 | echo " " 177 | } 178 | APP_ARGS=`save "$@"` 179 | 180 | # Collect all arguments for the java command, following the shell quoting and substitution rules 181 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS" 182 | 183 | exec "$JAVACMD" "$@" 184 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @rem 2 | @rem Copyright 2015 the original author or authors. 3 | @rem 4 | @rem Licensed under the Apache License, Version 2.0 (the "License"); 5 | @rem you may not use this file except in compliance with the License. 6 | @rem You may obtain a copy of the License at 7 | @rem 8 | @rem https://www.apache.org/licenses/LICENSE-2.0 9 | @rem 10 | @rem Unless required by applicable law or agreed to in writing, software 11 | @rem distributed under the License is distributed on an "AS IS" BASIS, 12 | @rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | @rem See the License for the specific language governing permissions and 14 | @rem limitations under the License. 15 | @rem 16 | 17 | @if "%DEBUG%" == "" @echo off 18 | @rem ########################################################################## 19 | @rem 20 | @rem Gradle startup script for Windows 21 | @rem 22 | @rem ########################################################################## 23 | 24 | @rem Set local scope for the variables with windows NT shell 25 | if "%OS%"=="Windows_NT" setlocal 26 | 27 | set DIRNAME=%~dp0 28 | if "%DIRNAME%" == "" set DIRNAME=. 29 | set APP_BASE_NAME=%~n0 30 | set APP_HOME=%DIRNAME% 31 | 32 | @rem Resolve any "." and ".." in APP_HOME to make it shorter. 33 | for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi 34 | 35 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 36 | set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" 37 | 38 | @rem Find java.exe 39 | if defined JAVA_HOME goto findJavaFromJavaHome 40 | 41 | set JAVA_EXE=java.exe 42 | %JAVA_EXE% -version >NUL 2>&1 43 | if "%ERRORLEVEL%" == "0" goto init 44 | 45 | echo. 46 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 47 | echo. 48 | echo Please set the JAVA_HOME variable in your environment to match the 49 | echo location of your Java installation. 50 | 51 | goto fail 52 | 53 | :findJavaFromJavaHome 54 | set JAVA_HOME=%JAVA_HOME:"=% 55 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 56 | 57 | if exist "%JAVA_EXE%" goto init 58 | 59 | echo. 60 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 61 | echo. 62 | echo Please set the JAVA_HOME variable in your environment to match the 63 | echo location of your Java installation. 64 | 65 | goto fail 66 | 67 | :init 68 | @rem Get command-line arguments, handling Windows variants 69 | 70 | if not "%OS%" == "Windows_NT" goto win9xME_args 71 | 72 | :win9xME_args 73 | @rem Slurp the command line arguments. 74 | set CMD_LINE_ARGS= 75 | set _SKIP=2 76 | 77 | :win9xME_args_slurp 78 | if "x%~1" == "x" goto execute 79 | 80 | set CMD_LINE_ARGS=%* 81 | 82 | :execute 83 | @rem Setup the command line 84 | 85 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 86 | 87 | @rem Execute Gradle 88 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 89 | 90 | :end 91 | @rem End local scope for the variables with windows NT shell 92 | if "%ERRORLEVEL%"=="0" goto mainEnd 93 | 94 | :fail 95 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 96 | rem the _cmd.exe /c_ return code! 97 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 98 | exit /b 1 99 | 100 | :mainEnd 101 | if "%OS%"=="Windows_NT" endlocal 102 | 103 | :omega 104 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | /* 2 | * This file was generated by the Gradle 'init' task. 3 | * 4 | * The settings file is used to specify which projects to include in your build. 5 | * 6 | * Detailed information about configuring a multi-project build in Gradle can be found 7 | * in the user manual at https://docs.gradle.org/6.2.2/userguide/multi_project_builds.html 8 | */ 9 | 10 | rootProject.name = 'boardstar' 11 | 12 | include 'boardstar-async' 13 | include 'boardstar-lazy' 14 | include 'boardstar-streams' 15 | include 'util' 16 | include 'webapp' -------------------------------------------------------------------------------- /trabalho1.md: -------------------------------------------------------------------------------- 1 | # Enunciado do Trabalho 1 2 | 3 | **Data limite de entrega: 13 de Abril** 4 | 5 | **Objectivos**: Prática com funções de primeira classe, expressões lambda, 6 | funções de ordem superior, `Iterable` 7 | 8 | **NOTA**: 9 | 1. A solução entregue deve incluir todos os testes unitários necessários para 10 | validar o correcto funcionamento das funcionalidades pedidas. 11 | **ATENÇÃO**: os testes devem verificar o correcto funcionamento do projeto mesmo sem 12 | ligação à internet. 13 | 2. Este trabalho deve ser desenvolvido usando como base o projecto Gradle 14 | **boardstar** disponibilizado em https://github.com/isel-leic-mpd/boardstar. 15 | Copie toda a solução incluindo o ficheiro `.gitignore` para o repositório 16 | Github do grupo de MPD. 17 | 3. Cada trabalho será desenvolvido num novo módulo dentro do projecto 18 | `boardstar`. Neste Trabalho 1 apenas trabalhará nos módulos `util` e 19 | `boardstar-lazy`. 20 | 21 | Implemente a biblioteca `boardstar-lazy` que disponibiliza informação detalhada 22 | sobre jogos de tabuleiro, suas categorias e os seus artistas. 23 | Os dados são obtidos a partir de uma API RESTful: 24 | https://www.boardgameatlas.com/api/docs. 25 | O modelo de domínio é formado pelas entidades: `Category`, `Game` e `Artist` e obedece à 26 | especificação apresentada no diagrama de classes seguinte: 27 | 28 | 29 | 30 | As classes do modelo de domínio estão implementadas no módulo **boardstar-lazy**. 31 | Todas as relações entre as entidades de domínio são mantidas de forma **lazy**. 32 | 33 | A instanciação e navegação dos objectos de domínio é feita por 34 | `BoardstarService` que recorre à classe `BgaWebApi` para realizar os pedidos à 35 | Web Api de Board Game Atlas. 36 | 37 | 38 | 39 | ## 1. **util** `LazyQueries` 40 | 41 | O módulo **boardstar-lazy** recorre a **boardstar-util** para executar tarefas 42 | auxiliares tais como operações sobre sequências implementadas pela classe 43 | `LazyQueries`. 44 | Implemente em `LazyQueries` as seguintes operações e **todos os testes unitários 45 | necessários à validação dos respectivos métodos**: 46 | 47 | 1. Baseando-se nas implementações dadas nas aulas, implemente os métodos: 48 | * _factory_: `Iterable generate(Supplier)` e `Iterable iterate(T seed, UnaryOperator acc)`; 49 | * operações intermédias: `filter()`, `skip()`, `limit()`, `map()`; 50 | * operações terminais: `count()` e `Object[] toArray()`. 51 | 2. Baseando-se nas implementações dadas nas aulas, implemente os métodos 52 | `first()` e `max()`. 53 | Note que o tipo de retorno destes métodos deve ser `Optional`. 54 | 3. `last(Iterable src)` - retorna o último elemento da sequência `src` na forma de `Optional` 55 | 4. `takeWhile(Iterable src, Predicate pred)` - retorna uma nova sequência 56 | lazy com os primeiros elementos de `src` que verificam o predicado `pred` 57 | 5. `flatMap(Iterable src, Function> mapper)` - retorna uma nova 58 | sequência lazy com o resultado das transformações de cada elemento de `src` 59 | pela função `mapper` num `Iterable` combinados numa única sequência. 60 | Exemplo, dada uma sequência de palavras: “isel”, “super”, “ola”, então uma 61 | operação de `flatMap` sobre esta sequência com uma transformação de `String -> 62 | Iterable`, deve resultar num `Iterable` com: `‘i’, ‘s’, ‘e’, ‘l’, 63 | ‘s’, ‘u’, ‘p’, ‘e’, ‘r’, ‘o’, ‘l’, ‘a’`. 64 | 65 | 66 | ## 2. **boardstar-lazy** `BgaWebApi` 67 | 68 | Implemente os métodos de `BgaWebApi` e **todos os testes unitários 69 | necessários à validação dos respectivos métodos**. 70 | 71 | **Note que todos os testes devem validar corretamente o projecto mesmo 72 | na ausência de ligação à internet.** 73 | 74 | Para implementar as funcionalidade de `BgaWebApi` deve recorrer às seguintes rotas da Web API de Board Game Atlas: 75 | * https://www.boardgameatlas.com/api/docs/game/categories 76 | * https://www.boardgameatlas.com/api/docs/search 77 | 78 | Os resultados da API RESTFul podem ser convertidos através da biblioteca Gson 79 | para instâncias de classes pré-definidas (DTOs). 80 | 81 | 82 | ## 3. **boardstar -lazy** `BoardstarService` 83 | 84 | Implemente os métodos de ` BoardstarService ` e **todos os testes unitários 85 | necessários à validação dos seus métodos**. 86 | 87 | As relações entre as entidades do modelo de domínio (`Category`, `Game` e `Artist`) 88 | devem ser mantidas de forma **lazy**. 89 | Os testes unitários devem validar o comportamento lazy, verificando que não são realizadas 90 | operações de IO (e.g. HTTP ou acesso a ficheiros) enquanto não é obtido o `Iterator` resultante. 91 | Por exemplo, a chamada a `getCategories()` não deve desencadear acesso de IO, tal como a chamada 92 | a `getGames()` sobre uma instância de `Category` também não deve fazer acesso IO até que os objectos 93 | `Iterator` sejam obtidos. 94 | 95 | Note que alguns dos métodos de `BgaWebapi` recebem um segundo parâmetro 96 | inteiro correspondente ao número da página. 97 | Nestes casos o método correspondente de `BoardstarServive` deve retornar um iterável 98 | que percorre os elementos de todas as páginas disponíveis até ser obtida uma 99 | página sem elementos. 100 | Para tal deve executar um encadeamento de operações semelhante ao seguinte: 101 | 102 | ``` 103 | iterate(…) ==> 1,2,3,.. 104 | ==> map(invoke BgaWebApi) 105 | ==> list 1, list 2, … 106 | ==> takeWhile(list.size() != 0) 107 | ==> flatMap(lst) 108 | ==> map(dto -> model) 109 | ``` 110 | 111 | ## 4. **util** `LazyQueries::cache` (**Opcional**) 112 | 113 | Implemente em `LazyQueries` uma função utilitária `cache()` que pode ser 114 | aplicada a qualquer sequência retornando uma nova sequência do mesmo tipo, e.g. 115 | `games = cache(games)`. 116 | A sequência resultante deve guardar em memória os elementos que vão sendo 117 | obtidos por um iterador. 118 | O método `next()` retorna sempre os elementos que já estejam guardados em 119 | memória e só obtém um novo elemento caso este não esteja _cached_. 120 | Exemplo de utilização do método `cache()` sobre uma sequência infinita: 121 | 122 | ```java 123 | Random r = new Random(); 124 | Iterable nrs = generate(() -> r.nextInt(100)); 125 | nrs = cache(nrs); 126 | Object[] expected = toArray(limit(nrs, 10)); 127 | Object[] actual = toArray(limit(nrs, 10)); 128 | assertArrayEquals(expected, actual); 129 | ``` 130 | 131 | Verifique o correcto funcionamento desta função confirmando que não são feitos 132 | novos pedidos HTTP quando uma sequência de jogos é percorridas mais que uma vez. 133 | -------------------------------------------------------------------------------- /trabalho2.md: -------------------------------------------------------------------------------- 1 | # Enunciado do Trabalho 2 2 | 3 | **Objectivos**: Prática com `Stream`, `Spliterator` e o idioma internal 4 | iteration. 5 |
6 | **Data limite de entrega**: **4 de Maio de 2020** 7 | 8 | **NOTA**: Implemente os testes unitários necessários para validar o 9 | funcionamento das funcionalidades pedidas. 10 | 11 | No âmbito do projecto **boardstar** pretende-se implementar o módulo 12 | `boardstar-streams` com objectivos semelhantes aos de `boardstar-lazy`, 13 | mas substituindo a utilização de `Iterator` por `Stream`. 14 | 15 | ## Parte 1 16 | 17 | Copie do módulo `boardstar-lazy` para o módulo `boardstar-streams` todo o conteúdo 18 | do sub-package `boardstar` incluindo entidades de domínio, serviços e DTOs. 19 | 20 | No módulo `boardstar-streams` substitua a utilização de: 21 | 1. `Iterator` por `Stream`. 22 | 2. `Iterable` por `Stream` ou `Supplier>`. 23 | 2. `LazyQueries` pelos métodos default de `Stream`. 24 | 25 | Implemente numa nova classe auxiliar `StreamUtils` o método 26 | `Supplier> cache(Stream src)`. 27 | A sequência resultante do `cache()` deve: 28 | 1. guardar em memória os elementos que vão sendo obtidos da sequência fonte `src`. 29 | 2. retornar sempre os elementos que já estejam guardados em 30 | memória e só obtém um novo elemento caso este não esteja _cached_. 31 | 32 | Exemplo de utilização do método `cache()` sobre uma sequência infinita: 33 | 34 | ```java 35 | Random r = new Random(); 36 | Stream nrs = generate(() -> r.nextInt(100)); 37 | Supplier> nrs = cache(nrs); 38 | Object[] expected = nrs.get().limit(10).ToArray(); 39 | Object[] actual = nrs.get().limit(10).ToArray(); 40 | assertArrayEquals(expected, actual); 41 | ``` 42 | 43 | Note que os elementos das sequências resultantes de `cache()` podem ser obtidos alternadamente 44 | entre sequências, tal como apresenta o exemplo de intercalação de 8 acções na imagem seguinte: 45 | 46 | * 1 Obtém uma sequênca do `Supplier` retornado por `cache()`. 47 | * 2 e 3 Lê os valores `a` e `b` da sequência resultante de 1. que não existiam em memória e 48 | foram obtidos da sequência fonte (`src`) e adicionados em `mem`. 49 | * 4 Obtém uma nova sequênca do `Supplier` retornado por `cache()`. 50 | * 5 e 6 Lê os valores `a` e `b` da sequência resultante de 4. que já estavam em memória. 51 | * 7 Lê o valor `c` da sequência resultante de 4. que não existia em memória e 52 | foi obtido da sequência fonte (`src`) e adicionados em `mem`. 53 | * 8 Lê o valor `c` da sequência resultante de 1. que já estavam em memória. 54 | 55 | 56 | 57 | ## Parte 2 58 | 59 | Implemente em `StreamUtils` o método `Stream interleave(Stream src, Stream other)` 60 | que retorna uma nova sequência com os elementos de `src` e `other` intercalados entre si. 61 | E.g. Dado `src = Stream.of("1", "2", "3")` e `other = Stream.of("a", "b", "c", "d", "e", "f")` então 62 | `res = interleave(src, other)` resultará numa sequência com os elementos 63 | `"1","a", "2, ""b", "3, ""c", "d", "e", "f"`. 64 | A implementação deve ser _lazy_. 65 | 66 | ## Parte 3 67 | 68 | Sem fazer novas implementações de `Spliterator` implemente as sequintes _queries_ à custa dos 69 | métodos default de `Stream` e das operações auxiliares que implementou em `StreamUtils`: 70 | 71 | 1. `Stream intersection(Stream src, Stream other)` que retorna uma nova sequência com os 72 | elementos iguais (segundo o `equals`) entre `src` e `other`. 73 | Faça um teste unitário que verifique o funcionamento desta operações fazendo a intercepção de 74 | duas sequências de jogos. e.g. `intersection(searchByCategory(“War”), searchByCategory(“Adventure))`. 75 | 76 | 2. Dada uma sequência `Stream headers` e outra de conteúdos `Stream> contents` 77 | obtenha uma nova sequência de `Stream` que intercala os cabeçalhos `headers` com os conteúdos de `contents`. 78 | Faça um teste unitário para as seguintes sequências com dados : 79 | 80 | ```java 81 | Stream headers = getCategories().map(c -> c.getName() + ":"); 82 | 83 | Stream> content = getCategories() 84 | .map(Category::getGames) 85 | .map(games -> games.limit(10).map(Game::getName)) 86 | ``` -------------------------------------------------------------------------------- /trabalho3.md: -------------------------------------------------------------------------------- 1 | # Enunciado do Trabalho 3 2 | 3 | **Objectivos**: Prática com API assíncrona, `CompletableFuture` e _reactive streams_. 4 |
5 | **Data limite de entrega**: ~~1 de Junho~~ **15 de Junho de 2019** 6 | 7 | Implemente os testes unitários necessários para validar o 8 | funcionamento das funcionalidades pedidas. 9 | 10 | **NOTA 1**: não poderá criar ou usar explicitamente fios de execução (i.e. 11 | `Thread`), nem por diferimento de tarefas (i.e. 12 | `CompletableFuture.supplyAsync(...)`) nem através de qualquer outro meio. 13 | 14 | **NOTA 2**: não poderá bloquear sobre o resultado das computações assíncronas 15 | (i.e. `.join()` ou `.get()`) com excepção aos testes unitários. 16 | 17 | ## Parte 0 18 | 19 | No âmbito do projecto **boardstar** pretende-se tornar a sua API assíncrona. Deverá 20 | criar um novo módulo `boardstar-reactive` com base no anterior e adaptá-lo de 21 | acordo com os requisitos deste enunciado. 22 | 23 | ## Parte 1 24 | 25 | De modo a que o módulo `boardstar-reactive` passe a usar IO não-bloqueante, crie uma 26 | nova interface `AsyncRequest` com um método `getBody()` que tenha API 27 | assíncrona. 28 | A implementação desta interface para pedidos HTTP GET deve recorrer a uma 29 | biblioteca para realização de pedidos HTTP não bloqueantes, como por exemplo 30 | [AsyncHttpClient](https://github.com/AsyncHttpClient/async-http-client) ou 31 | [java.net.http](https://docs.oracle.com/en/java/javase/11/docs/api/java.net.http/java/net/http/HttpClient.html) 32 | do JDK 11. 33 | 34 | Os métodos de `BgaWebApi` devem passar a retornar resultados na forma de 35 | `CompletableFuture>`. 36 | 37 | Os tipos do modelo de domínio e serviço devem ser actualizados para que passem 38 | a oferecer uma API assíncrona baseada no tipo 39 | [Observable](http://reactivex.io/RxJava/javadoc/io/reactivex/Observable.html) 40 | sempre que faça sentido. 41 | 42 | Os métodos `searchBy...()` de `BoardstarService` e `getGames()` do modelo de 43 | domínio, devem passar a receber um parâmetro inteiro que determina o número 44 | total de elementos da sequência retornada, permitindo assim que possam ser 45 | desencadeados pedidos concorrentes à `BgaWebApi`. 46 | Ou seja, se for chamado o método `searchBy...(..., 270 )` de `BoardstarService` 47 | e se por sua vez `BgaWebApi` retornar resultados em grupos de 30 elementos, 48 | então serão feitos pedidos a `BgaWebApi` para as páginas de 1 a 9. 49 | 50 | ## Parte 2 51 | 52 | Implemente uma aplicação Web usando a tecnologia 53 | com suporte para handlers assíncronos, como por exemplo 54 | [javalin](https://javalin.io/), 55 | [VertX](https://vertx.io/docs/vertx-web/java/), 56 | [Spring Web Flux](https://docs.spring.io/spring/docs/current/spring-framework-reference/web-reactive.html), 57 | ou outro. 58 | 59 | A aplicação deve disponibilizar as seguintes páginas: 60 | 61 | 1. Listagem de todas as categorias de jogos. 62 | Cada categoria tem um link para a listagem de jogos dessa categoria 63 | (página 2). 64 | 2. Listagem de jogos de uma categoria ou de um artista. 65 | Cada jogo tem 2 links: um para a listagem dos seus artistas (página 3) e outro para a 66 | listagem das suas categorias (página 1 com query-string das categorias a apresentar). 67 | O número de items apresentados nesta página pode ser limitado por um 68 | parâmetro de _query-string_. 69 | 3. Listagem de artistas de um jogo. Cada artista tem um link para a listagem 70 | dos seus jogos (página 2). 71 | 72 | As páginas anteriores são acessíveis através dos seguintes caminhos (paths): 73 | 74 | 1. `/categories` 75 | 2. `/categories/:id/games` ou `/artists/:id/games` 76 | 3. `/games/:id/artists` 77 | 78 | A aplicação web **nunca poderá bloquear** (não fazer `join()` e nem `get()`) na 79 | obtenção de um resultado. 80 | 81 | As listagens devem ser retornadas no corpo da reposta HTTP em modo chunked 82 | (`response.setChunked(true)`) sendo a user-interface construída de forma 83 | progressiva à medida que a resposta é recebida no browser. 84 | 85 | Por exemplo, o pedido a `/categories/eX8uuNlQkQ/games/` retorna cerca de 300 jogos que 86 | devem ser apresentados progressivamente à medida que são obtidos os resultados da 87 | Web API do Board Game Atlas. -------------------------------------------------------------------------------- /util/build.gradle: -------------------------------------------------------------------------------- 1 | /* 2 | * This file was generated by the Gradle 'init' task. 3 | * 4 | * This generated file contains a sample Java Library project to get you started. 5 | * For more details take a look at the Java Libraries chapter in the Gradle 6 | * User Manual available at https://docs.gradle.org/6.2.2/userguide/java_library_plugin.html 7 | */ 8 | 9 | plugins { 10 | // Apply the java-library plugin to add support for Java Library 11 | id 'java-library' 12 | } 13 | 14 | repositories { 15 | // Use jcenter for resolving dependencies. 16 | // You can declare any Maven/Ivy/file repository here. 17 | jcenter() 18 | } 19 | 20 | dependencies { 21 | // Use JUnit test framework 22 | testImplementation 'junit:junit:4.12' 23 | } 24 | -------------------------------------------------------------------------------- /util/src/main/java/pt/isel/mpd/util/LazyQueries.java: -------------------------------------------------------------------------------- 1 | /* 2 | * GNU General Public License v3.0 3 | * 4 | * Copyright (c) 2020, Miguel Gamboa (gamboa.pt) 5 | * 6 | * All rights granted under this License are granted for the term of 7 | * copyright on the Program, and are irrevocable provided the stated 8 | * conditions are met. This License explicitly affirms your unlimited 9 | * permission to run the unmodified Program. The output from running a 10 | * covered work is covered by this License only if the output, given its 11 | * content, constitutes a covered work. This License acknowledges your 12 | * rights of fair use or other equivalent, as provided by copyright law. 13 | * 14 | * You may make, run and propagate covered works that you do not 15 | * convey, without conditions so long as your license otherwise remains 16 | * in force. You may convey covered works to others for the sole purpose 17 | * of having them make modifications exclusively for you, or provide you 18 | * with facilities for running those works, provided that you comply with 19 | * the terms of this License in conveying all material for which you do 20 | * not control copyright. Those thus making or running the covered works 21 | * for you must do so exclusively on your behalf, under your direction 22 | * and control, on terms that prohibit them from making any copies of 23 | * your copyrighted material outside their relationship with you. 24 | * 25 | * Conveying under any other circumstances is permitted solely under 26 | * the conditions stated below. Sublicensing is not allowed; section 10 27 | * makes it unnecessary. 28 | */ 29 | 30 | package pt.isel.mpd.util; 31 | 32 | import pt.isel.mpd.util.iterators.IteratorFilter; 33 | import pt.isel.mpd.util.iterators.IteratorGenerate; 34 | import pt.isel.mpd.util.iterators.IteratorMap; 35 | 36 | import java.util.Iterator; 37 | import java.util.NoSuchElementException; 38 | import java.util.function.Function; 39 | import java.util.function.Predicate; 40 | import java.util.function.Supplier; 41 | 42 | public class LazyQueries { 43 | public static Iterable generate(Supplier sup) { 44 | return () -> new IteratorGenerate<>(sup); 45 | } 46 | 47 | public static Iterable limit(Iterable src, int nr) { 48 | return () -> new Iterator() { 49 | Iterator iter = src.iterator(); 50 | int idx = 0; 51 | public boolean hasNext() { 52 | return idx < nr && iter.hasNext(); 53 | } 54 | public T next() { 55 | if(!hasNext()) throw new NoSuchElementException(); 56 | idx++; 57 | return iter.next(); 58 | } 59 | }; 60 | } 61 | 62 | public static Iterable filter(Iterable src, Predicate pred) { 63 | return () -> new IteratorFilter<>(src, pred); 64 | } 65 | 66 | public static Iterable map(Iterable src, Function mapper) { 67 | return () -> new IteratorMap<>(src, mapper); 68 | } 69 | 70 | } 71 | -------------------------------------------------------------------------------- /util/src/main/java/pt/isel/mpd/util/Request.java: -------------------------------------------------------------------------------- 1 | /* 2 | * GNU General Public License v3.0 3 | * 4 | * Copyright (c) 2020, Miguel Gamboa (gamboa.pt) 5 | * 6 | * All rights granted under this License are granted for the term of 7 | * copyright on the Program, and are irrevocable provided the stated 8 | * conditions are met. This License explicitly affirms your unlimited 9 | * permission to run the unmodified Program. The output from running a 10 | * covered work is covered by this License only if the output, given its 11 | * content, constitutes a covered work. This License acknowledges your 12 | * rights of fair use or other equivalent, as provided by copyright law. 13 | * 14 | * You may make, run and propagate covered works that you do not 15 | * convey, without conditions so long as your license otherwise remains 16 | * in force. You may convey covered works to others for the sole purpose 17 | * of having them make modifications exclusively for you, or provide you 18 | * with facilities for running those works, provided that you comply with 19 | * the terms of this License in conveying all material for which you do 20 | * not control copyright. Those thus making or running the covered works 21 | * for you must do so exclusively on your behalf, under your direction 22 | * and control, on terms that prohibit them from making any copies of 23 | * your copyrighted material outside their relationship with you. 24 | * 25 | * Conveying under any other circumstances is permitted solely under 26 | * the conditions stated below. Sublicensing is not allowed; section 10 27 | * makes it unnecessary. 28 | */ 29 | 30 | package pt.isel.mpd.util; 31 | 32 | import java.io.Reader; 33 | import java.util.List; 34 | 35 | public interface Request { 36 | Iterable getLines(String path); 37 | 38 | Reader getReader(String path); 39 | } 40 | -------------------------------------------------------------------------------- /util/src/main/java/pt/isel/mpd/util/iterators/IteratorFilter.java: -------------------------------------------------------------------------------- 1 | /* 2 | * GNU General Public License v3.0 3 | * 4 | * Copyright (c) 2020, Miguel Gamboa (gamboa.pt) 5 | * 6 | * All rights granted under this License are granted for the term of 7 | * copyright on the Program, and are irrevocable provided the stated 8 | * conditions are met. This License explicitly affirms your unlimited 9 | * permission to run the unmodified Program. The output from running a 10 | * covered work is covered by this License only if the output, given its 11 | * content, constitutes a covered work. This License acknowledges your 12 | * rights of fair use or other equivalent, as provided by copyright law. 13 | * 14 | * You may make, run and propagate covered works that you do not 15 | * convey, without conditions so long as your license otherwise remains 16 | * in force. You may convey covered works to others for the sole purpose 17 | * of having them make modifications exclusively for you, or provide you 18 | * with facilities for running those works, provided that you comply with 19 | * the terms of this License in conveying all material for which you do 20 | * not control copyright. Those thus making or running the covered works 21 | * for you must do so exclusively on your behalf, under your direction 22 | * and control, on terms that prohibit them from making any copies of 23 | * your copyrighted material outside their relationship with you. 24 | * 25 | * Conveying under any other circumstances is permitted solely under 26 | * the conditions stated below. Sublicensing is not allowed; section 10 27 | * makes it unnecessary. 28 | */ 29 | 30 | package pt.isel.mpd.util.iterators; 31 | 32 | import java.util.Iterator; 33 | import java.util.NoSuchElementException; 34 | import java.util.function.Predicate; 35 | 36 | public class IteratorFilter implements Iterator { 37 | private final Iterable src; 38 | private final Predicate pred; 39 | Iterator iter; 40 | T curr; 41 | boolean hasAdvanced; 42 | 43 | public IteratorFilter(Iterable src, Predicate pred) { 44 | this.src = src; 45 | this.pred = pred; 46 | iter = src.iterator(); 47 | hasAdvanced = false; 48 | } 49 | 50 | @Override 51 | public boolean hasNext() { 52 | if(hasAdvanced) return true; 53 | while (iter.hasNext()) { 54 | curr = iter.next(); 55 | if (pred.test(curr)) { 56 | hasAdvanced = true; 57 | return true; 58 | } 59 | } 60 | return false; 61 | } 62 | 63 | @Override 64 | public T next() { 65 | if (!hasNext()) throw new NoSuchElementException(); 66 | hasAdvanced = false; 67 | return curr; 68 | } 69 | } 70 | -------------------------------------------------------------------------------- /util/src/main/java/pt/isel/mpd/util/iterators/IteratorGenerate.java: -------------------------------------------------------------------------------- 1 | /* 2 | * GNU General Public License v3.0 3 | * 4 | * Copyright (c) 2020, Miguel Gamboa (gamboa.pt) 5 | * 6 | * All rights granted under this License are granted for the term of 7 | * copyright on the Program, and are irrevocable provided the stated 8 | * conditions are met. This License explicitly affirms your unlimited 9 | * permission to run the unmodified Program. The output from running a 10 | * covered work is covered by this License only if the output, given its 11 | * content, constitutes a covered work. This License acknowledges your 12 | * rights of fair use or other equivalent, as provided by copyright law. 13 | * 14 | * You may make, run and propagate covered works that you do not 15 | * convey, without conditions so long as your license otherwise remains 16 | * in force. You may convey covered works to others for the sole purpose 17 | * of having them make modifications exclusively for you, or provide you 18 | * with facilities for running those works, provided that you comply with 19 | * the terms of this License in conveying all material for which you do 20 | * not control copyright. Those thus making or running the covered works 21 | * for you must do so exclusively on your behalf, under your direction 22 | * and control, on terms that prohibit them from making any copies of 23 | * your copyrighted material outside their relationship with you. 24 | * 25 | * Conveying under any other circumstances is permitted solely under 26 | * the conditions stated below. Sublicensing is not allowed; section 10 27 | * makes it unnecessary. 28 | */ 29 | 30 | package pt.isel.mpd.util.iterators; 31 | 32 | import java.util.Iterator; 33 | import java.util.function.Supplier; 34 | 35 | public class IteratorGenerate implements Iterator { 36 | private final Supplier sup; 37 | 38 | public IteratorGenerate(Supplier sup) { 39 | this.sup = sup; 40 | } 41 | 42 | public boolean hasNext() { return true; } 43 | 44 | public T next() { return sup.get(); } 45 | } 46 | -------------------------------------------------------------------------------- /util/src/main/java/pt/isel/mpd/util/iterators/IteratorMap.java: -------------------------------------------------------------------------------- 1 | /* 2 | * GNU General Public License v3.0 3 | * 4 | * Copyright (c) 2020, Miguel Gamboa (gamboa.pt) 5 | * 6 | * All rights granted under this License are granted for the term of 7 | * copyright on the Program, and are irrevocable provided the stated 8 | * conditions are met. This License explicitly affirms your unlimited 9 | * permission to run the unmodified Program. The output from running a 10 | * covered work is covered by this License only if the output, given its 11 | * content, constitutes a covered work. This License acknowledges your 12 | * rights of fair use or other equivalent, as provided by copyright law. 13 | * 14 | * You may make, run and propagate covered works that you do not 15 | * convey, without conditions so long as your license otherwise remains 16 | * in force. You may convey covered works to others for the sole purpose 17 | * of having them make modifications exclusively for you, or provide you 18 | * with facilities for running those works, provided that you comply with 19 | * the terms of this License in conveying all material for which you do 20 | * not control copyright. Those thus making or running the covered works 21 | * for you must do so exclusively on your behalf, under your direction 22 | * and control, on terms that prohibit them from making any copies of 23 | * your copyrighted material outside their relationship with you. 24 | * 25 | * Conveying under any other circumstances is permitted solely under 26 | * the conditions stated below. Sublicensing is not allowed; section 10 27 | * makes it unnecessary. 28 | */ 29 | 30 | package pt.isel.mpd.util.iterators; 31 | 32 | import java.util.Iterator; 33 | import java.util.function.Function; 34 | 35 | public class IteratorMap implements Iterator { 36 | private final Iterable src; 37 | private final Function mapper; 38 | Iterator iter; 39 | 40 | public IteratorMap(Iterable src, Function mapper) { 41 | this.src = src; 42 | this.mapper = mapper; 43 | iter = src.iterator(); 44 | } 45 | 46 | @Override 47 | public boolean hasNext() { 48 | return iter.hasNext(); 49 | } 50 | 51 | @Override 52 | public R next() { 53 | return mapper.apply(iter.next()); 54 | } 55 | } 56 | -------------------------------------------------------------------------------- /util/src/test/java/pt/isel/mpd/LazyQueriesTest.java: -------------------------------------------------------------------------------- 1 | /* 2 | * GNU General Public License v3.0 3 | * 4 | * Copyright (c) 2020, Miguel Gamboa (gamboa.pt) 5 | * 6 | * All rights granted under this License are granted for the term of 7 | * copyright on the Program, and are irrevocable provided the stated 8 | * conditions are met. This License explicitly affirms your unlimited 9 | * permission to run the unmodified Program. The output from running a 10 | * covered work is covered by this License only if the output, given its 11 | * content, constitutes a covered work. This License acknowledges your 12 | * rights of fair use or other equivalent, as provided by copyright law. 13 | * 14 | * You may make, run and propagate covered works that you do not 15 | * convey, without conditions so long as your license otherwise remains 16 | * in force. You may convey covered works to others for the sole purpose 17 | * of having them make modifications exclusively for you, or provide you 18 | * with facilities for running those works, provided that you comply with 19 | * the terms of this License in conveying all material for which you do 20 | * not control copyright. Those thus making or running the covered works 21 | * for you must do so exclusively on your behalf, under your direction 22 | * and control, on terms that prohibit them from making any copies of 23 | * your copyrighted material outside their relationship with you. 24 | * 25 | * Conveying under any other circumstances is permitted solely under 26 | * the conditions stated below. Sublicensing is not allowed; section 10 27 | * makes it unnecessary. 28 | */ 29 | 30 | /* 31 | * This Java source file was generated by the Gradle 'init' task. 32 | */ 33 | package pt.isel.mpd; 34 | 35 | import org.junit.Test; 36 | 37 | import java.util.Arrays; 38 | import java.util.Iterator; 39 | import java.util.Random; 40 | 41 | import static org.junit.Assert.assertEquals; 42 | import static org.junit.Assert.assertFalse; 43 | import static pt.isel.mpd.util.LazyQueries.filter; 44 | import static pt.isel.mpd.util.LazyQueries.generate; 45 | import static pt.isel.mpd.util.LazyQueries.limit; 46 | 47 | public class LazyQueriesTest { 48 | 49 | @Test public void testGenerateRandomIntegers() { 50 | Random rand = new Random(); 51 | Iterator nrs = generate(rand::nextInt).iterator(); 52 | System.out.println(nrs.next()); 53 | System.out.println(nrs.next()); 54 | System.out.println(nrs.next()); 55 | } 56 | int init; 57 | @Test public void testGenerateEvenIntegers() { 58 | Iterator expected = Arrays.asList(0, 2, 4, 6).iterator(); 59 | init = 0; 60 | Iterable actual = limit(filter(generate(() -> init++), n -> n % 2 == 0), 4); 61 | actual.forEach(curr -> assertEquals(expected.next(), curr)); 62 | assertFalse(expected.hasNext()); 63 | } 64 | 65 | @Test public void filterEvenNumbers() { 66 | Iterable nrs = Arrays.asList(1, 2, 3, 4, 5, 6, 7); 67 | Iterator expected = Arrays.asList(2, 4, 6).iterator(); 68 | Iterator actual = filter(nrs, n -> n % 2 == 0).iterator(); 69 | while(actual.hasNext()) { 70 | Integer curr = actual.next(); 71 | assertEquals(expected.next(), curr); 72 | } 73 | assertFalse(expected.hasNext()); 74 | } 75 | 76 | } 77 | -------------------------------------------------------------------------------- /webapp/build.gradle: -------------------------------------------------------------------------------- 1 | /* 2 | * This file was generated by the Gradle 'init' task. 3 | * 4 | * This generated file contains a sample Java Library project to get you started. 5 | * For more details take a look at the Java Libraries chapter in the Gradle 6 | * User Manual available at https://docs.gradle.org/6.2.2/userguide/java_library_plugin.html 7 | */ 8 | 9 | plugins { 10 | // Apply the java-library plugin to add support for Java Library 11 | id 'java-library' 12 | } 13 | 14 | repositories { 15 | // Use jcenter for resolving dependencies. 16 | // You can declare any Maven/Ivy/file repository here. 17 | jcenter() 18 | } 19 | 20 | dependencies { 21 | compile project(':boardstar-async') 22 | // Use JUnit test framework 23 | testImplementation 'junit:junit:4.12' 24 | } 25 | --------------------------------------------------------------------------------