├── .gitignore ├── LICENSE ├── Readme.adoc ├── docs ├── northwind_import.png └── relational_to_neo4j_import_tool.adoc ├── import-rdbms-mvn.sh ├── pom.xml └── src ├── main └── java │ └── org │ └── neo4j │ └── imports │ ├── AbstractGenerator.java │ ├── DataReader.java │ ├── DatabaseImporter.java │ ├── MetaDataReader.java │ ├── NodeGenerator.java │ ├── Options.java │ ├── RelInfo.java │ ├── RelationshipGenerator.java │ ├── Rules.java │ ├── StreamUtil.java │ └── TableInfo.java └── test └── java └── org └── neo4j └── imports ├── DataImporterEmployeeTest.java ├── DataImporterNorthwindTest.java ├── DataImporterSakilaTest.java ├── DataImporterTest.java ├── OptionsTest.java └── SchemaCrawlerTest.java /.gitignore: -------------------------------------------------------------------------------- 1 | *.log 2 | db 3 | zip.sh 4 | *.db/ 5 | lib/ 6 | *.tsv 7 | .project 8 | .shell_history 9 | *.ipr 10 | *.iws 11 | *.iml 12 | .idea 13 | target 14 | *.csv 15 | .DS_Store 16 | .settings 17 | *.gz 18 | gc.log 19 | *.zip 20 | zip19.sh 21 | not-imported.bad 22 | -------------------------------------------------------------------------------- /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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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.adoc: -------------------------------------------------------------------------------- 1 | == Relational to Neo4j Importer 2 | 3 | Scans Database Metadata to determine how to model 4 | Uses Parallel Batch Importer to ingest data from all tables in parallel 5 | 6 | Blog Post: link:docs/relational_to_neo4j_import_tool.adoc[] 7 | 8 | === Usage 9 | 10 | Currently you need http://maven.apache.org/download.cgi[apache maven] installed. 11 | 12 | Command line parameters are: 13 | 14 | `import-rdbms-mvn.sh "jdbc:url" "schema" "graph.db"` 15 | 16 | e.g. 17 | 18 | `import-rdbms-mvn.sh "jdbc:mysql://localhost:3306/northwind?user=root" "northwind" "northwind.db"` 19 | 20 | === Transformation Rules 21 | 22 | * Table with primary key become nodes 23 | * FK (1:1, 1:n and n:1) become relationships 24 | * Tables with no PK and exactly two FK and properties become relationships (optionally also if there is a pk) 25 | * Tables with more than two FK become nodes 26 | * remove all fk fields 27 | 28 | === Todo 29 | 30 | * Table name, column name transformation 31 | * Modeling Rules by table name pattern 32 | * Type transformation 33 | * Skipping Columns / Rows 34 | * Unique Constraints 35 | * Indexes 36 | * Compound Indexes (create artificial property) 37 | * Skip keys 38 | * Limit row rounds, by time 39 | * Custom SQL statements 40 | * Configure concurrency for JDBC reads 41 | 42 | === Ideas 43 | 44 | neo4j-rdbms-import 45 | --into ... 46 | --relationship-rule no-pk, two-fk, table% | default: no-pk 47 | --skip table% table%.field,table_.id | default none 48 | --rename: label: Capitalize,UP_CASE,camelCase,CamelCase | default:CapitalizeCamel 49 | relationship: 50 | property: 51 | 52 | * include and exclude with patterns (% and _) 53 | -------------------------------------------------------------------------------- /docs/northwind_import.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jexp/neo4j-rdbms-import/266500d1c5d5131664a1538b03399f313936af99/docs/northwind_import.png -------------------------------------------------------------------------------- /docs/relational_to_neo4j_import_tool.adoc: -------------------------------------------------------------------------------- 1 | == Building an Import Tool for Relational to Neo4j over one Weekend 2 | 3 | Last Saturday Night around 11pm when the family was fast asleep, I decided to finally write a tool that I had wanted to build for a while... 4 | 5 | === An automatic importer for relational databases into Neo4j. 6 | 7 | I had all the ingredients at hand 8 | 9 | . JDBC for accessing relational databases, and http://schemacrawler.sourceforge.net/how-to.html[SchemaCrawler] for a convenient way of extracting the meta-information. SchemaSpy would have worked as well. 10 | . http://neo4j.com/download#milestone[Neo4j 2.2] with its massively scalable parallel batch importer API (which is also the foundation for the http://neo4j.com/docs/milestone/import-tool.html[neo4j-import tool]). + 11 | This API also takes care of linking of nodes via external id's (which don't have to be stored). 12 | . And a bunch of ideas on how to declare rules for deciding what should become a node and what a relationship: 13 | 14 | ==== My Transformation Rules: 15 | 16 | * tables become *nodes*, the primary key becomes the linking-id (doesn't have to be stored) 17 | * foreign keys for 1:1, 1:n and n:1 references become relationships from that node 18 | * if a table has no primary key and two foreign-keys it becomes a *relationship* 19 | * tables and fields can be skipped 20 | * their names can be transformed (with a distinction between labels and relationship-types) 21 | * column values can be transformed as well (e.g. dates or decimals), null values are skipped 22 | 23 | Implementing the tool was pretty straightforward, so everyone should be able to do something similar. 24 | Some details were a bit devilish, I'll mention these in the appropriate places. 25 | The following sections explain some of the technical details, if you're only interested in how to use the tool jump forward to the <>. 26 | 27 | **** 28 | The class orchestrating the import is called `DataImporter`. You can call its main method with JDBC-URL, schema-name and Neo4j directory name. 29 | 30 | The first step was connecting to the relational database using the provided _JDBC-URL_. 31 | Extracting the database metadata into our own `TableInfo`-objects was next. I extracted table name, primary and foreign keys. This happens in `MetaDataReader`. 32 | 33 | Next in line was setting up the [ParallelBatchImporter] with default values for configuration, loggers and monitors. 34 | It expects its `Input` as two Iterables for `InputNodes` and `InputRelationships`. 35 | 36 | For each of the tables found, I read their content using plain SQL in `DataReader` returning a `ResultSet`. 37 | Those results are transformed in `Transformer.stream()` into InputNodes and InputRelationships according to the rules listed above. 38 | 39 | The tricky thing here was that one row can result in multiple Inputs (e.g. a row with several foreign keys to other tables), so I couldn't use the Iterator abstraction. 40 | That's why I decided to go with two blocking, limited Queues for nodes and relationships respectively which are filled from the transformed relational result streams. 41 | Using a Tombstone to signal the end of processing, I could convert the Queues to Iterators in a straightforward manner. 42 | 43 | The multi-pass approach of the parallel-importer API posed another challenge, which I worked around by filling multiple queues. This is an area that has to be improved. 44 | **** 45 | 46 | My first test was a simple _Users being Friends_ database that I created in memory using Apache Derby, that went pretty well. 47 | 48 | Looking for some MySQL demo databases, I found the http://dev.mysql.com/doc/sakila/en/sakila-structure.html[Sakila artist database] which could be imported out of the box but highlighted a concurrency issue - the parallel importer had to be started in a separate thread so that the reading from the relational database could progress in parallel. 49 | 50 | And the much larger https://dev.mysql.com/doc/employee/en/sakila-structure.html[employees database]. 51 | This one showed some peculiarities especially around composite primary and foreign keys. Especially foreign keys that are the same time part of the primary key are nasty. 52 | This forced me to extend the originally simple meta-data-model to cater for these cases. 53 | 54 | But all prepared the tool really well for the final example. 55 | 56 | [[example_section]] 57 | === Example 58 | 59 | Of course the obligatory Northwind example couldn't be left out. 60 | We also use it as an http://neo4j.com/developer/guide-importing-data-and-etl/[example for Cypher's LOAD CSV statement] and to compare http://neo4j.com/developer/guide-sql-to-cypher[Cypher with SQL]. 61 | So I downloaded the import script 62 | https://code.google.com/p/northwindextended/downloads/detail?name=Northwind.MySQL5.sql[from here] and ran the it in my local MySQL server. 63 | 64 | ---- 65 | myql -u root < /path/to/Northwind.MySQL5.sql 66 | ---- 67 | 68 | //// 69 | Tables included in this dataset are: 70 | 71 | ---- 72 | +--------------------------------+ 73 | | Categories | 74 | | CustomerCustomerDemo | 75 | | CustomerDemographics | 76 | | Customers | 77 | | EmployeeTerritories | 78 | | Employees | 79 | | Order Details | 80 | | Orders | 81 | | Products | 82 | | Region | 83 | | Shippers | 84 | | Suppliers | 85 | | Territories | 86 | +--------------------------------+ 87 | ---- 88 | //// 89 | 90 | I ran the import tool with these parameters: `import-rdbms-mvn.sh "jdbc:mysql://localhost:3306/northwind?user=root" "northwind" "northwind.db"` 91 | It extracted the metadata, and the row-data from MySQL and imported it in into Neo4j. All in 3 seconds. 92 | 93 | Looking at the meta-information in the Neo4j Browser shows that all expected labels and relationships are there. 94 | It nicely imported the `OrderDetails` and `EmployeeTerritories` JOIN-tables as relationships. 95 | 96 | **** 97 | To see the database in Neo4j Browser, shutdown Neo4j first with `bin/neo4j stop` then you either have to 98 | 99 | . configure the path to the database in `conf/neo4j-server.properties` or 100 | . copy the directory contents into `data/graph.db` 101 | **** 102 | 103 | image::northwind_import.png[] 104 | 105 | As I was flying to London on Sunday I had enough time to finish the first iteration and write this blog post. So a weekend well spent. 106 | 107 | Here you can find the tool: https://github.com/jexp/neo4j-rdbms-import 108 | 109 | *PLEASE* test it out with your relational databases and send me feedback, best as https://github.com/jexp/neo4j-rdbms-import/issues[GitHub Issues]. 110 | 111 | There are some more ideas, especially around parallelizing the reads from the relational database, 112 | configuring the mentioned rules and transformation and packaging it all up in to a nice little tool that can also be used by non-developers. 113 | -------------------------------------------------------------------------------- /import-rdbms-mvn.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash -e 2 | echo "Usage: $0 jdbc:... schema graph.db" 3 | JDBC=${1-jdbc:mysql://localhost:3306/northwind?user=root} 4 | shift 5 | SCHEMA=${1-northwind} 6 | shift 7 | DB=${1-northwind.db} 8 | shift 9 | if [ -d "$DB" ]; then rm -r "$DB"; fi 10 | 11 | mvn clean package dependency:copy-dependencies 12 | 13 | CP=target/neo4j-import-2.2.0.jar 14 | 15 | for i in target/dependency/*.jar ; do CP="$CP:$i"; done 16 | echo $CP 17 | 18 | echo java -Xmx4G -cp $CP org.neo4j.imports.DatabaseImporter $JDBC $SCHEMA $DB 19 | java -Xmx4G -cp $CP org.neo4j.imports.DatabaseImporter $JDBC $SCHEMA $DB 20 | -------------------------------------------------------------------------------- /pom.xml: -------------------------------------------------------------------------------- 1 | 3 | 4 | 2.2.0 5 | 6 | 7 | 4.0.0 8 | org.neo4j-contrib 9 | neo4j-import 10 | jar 11 | 2.2.0 12 | neo4j-import 13 | 14 | 15 | 16 | 17 | maven-compiler-plugin 18 | 3.2 19 | 20 | 1.7 21 | 1.7 22 | UTF-8 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | net.sourceforge.jtds 31 | jtds 32 | 1.3.1 33 | 34 | 35 | commons-io 36 | commons-io 37 | 2.4 38 | 39 | 40 | 41 | org.neo4j 42 | neo4j-kernel 43 | ${neo4j.version} 44 | 45 | 46 | org.neo4j 47 | neo4j-lucene-index 48 | ${neo4j.version} 49 | 50 | 51 | 56 | 57 | us.fatehi 58 | schemacrawler 59 | 12.04.02 60 | 61 | 62 | 63 | 64 | org.apache.derby 65 | derby 66 | 10.11.1.1 67 | 68 | 69 | mysql 70 | mysql-connector-java 71 | 5.1.34 72 | 73 | 74 | org.postgresql 75 | postgresql 76 | 9.4-1200-jdbc41 77 | 78 | 84 | 85 | 86 | 87 | 88 | org.perf4j 89 | perf4j 90 | 0.9.16 91 | test 92 | 93 | 94 | junit 95 | junit 96 | 4.11 97 | test 98 | 99 | 100 | org.neo4j 101 | neo4j-kernel 102 | ${neo4j.version} 103 | test-jar 104 | test 105 | 106 | 107 | 108 | -------------------------------------------------------------------------------- /src/main/java/org/neo4j/imports/AbstractGenerator.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (c) 2015 Michael Hunger 3 | * 4 | * This file is part of Relational to Neo4j Importer. 5 | * 6 | * Relational to Neo4j Importer is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * Relational to Neo4j Importer is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with Relational to Neo4j Importer. If not, see . 18 | */ 19 | package org.neo4j.imports; 20 | 21 | import org.neo4j.unsafe.impl.batchimport.InputIterable; 22 | import org.neo4j.unsafe.impl.batchimport.InputIterator; 23 | 24 | import java.io.IOException; 25 | import java.sql.ResultSet; 26 | import java.sql.SQLException; 27 | import java.util.Arrays; 28 | import java.util.Iterator; 29 | import java.util.List; 30 | 31 | import static java.util.Arrays.asList; 32 | 33 | /** 34 | * @author tbaum 35 | * @since 15.03.2015 36 | */ 37 | public abstract class AbstractGenerator implements InputIterable { 38 | static final Object[] NO_PROPS = new Object[0]; 39 | private final TableInfo[] tables; 40 | 41 | protected AbstractGenerator(TableInfo[] tables) { 42 | this.tables = tables; 43 | } 44 | 45 | @Override public boolean supportsMultiplePasses() { 46 | return false; 47 | } 48 | 49 | public InputIterator iterator() { 50 | final Iterator iterator = asList(tables).iterator(); 51 | 52 | return new InputIterator.Adapter() { 53 | boolean hasNext = true; 54 | Iterator current = null; 55 | T next = fetchNext(); 56 | 57 | @Override public boolean hasNext() { 58 | return hasNext; 59 | } 60 | 61 | @Override public T next() { 62 | T result = next; 63 | next = fetchNext(); 64 | return result; 65 | } 66 | 67 | private T fetchNext() { 68 | while (true) { 69 | if (current == null || !current.hasNext()) { 70 | if (iterator.hasNext()) 71 | try { 72 | current = streamNodes(iterator.next()); 73 | } catch (Exception e) { 74 | throw new RuntimeException(e); 75 | } 76 | else { 77 | hasNext = false; 78 | return null; 79 | } 80 | } 81 | if (current.hasNext()) { 82 | return current.next(); 83 | } 84 | } 85 | } 86 | }; 87 | } 88 | 89 | abstract Iterator streamNodes(TableInfo table) throws Exception; 90 | 91 | protected Object extractPrimaryKeys(Rules rules, ResultSet rs, List pks) throws SQLException { 92 | // todo prepend table name instead of using groups (hint from MP) 93 | StringBuilder sb = new StringBuilder(32); 94 | 95 | for (String pk : pks) { 96 | Object value = rules.transformPk(rs.getObject(pk)); 97 | if (value == null) return null; // if one fk-part is null then the whole fk is invalid, or?? 98 | 99 | sb.append(value); 100 | sb.append((char) 0); 101 | } 102 | return sb.toString(); 103 | } 104 | 105 | protected Object[] prepareProps(TableInfo table, Rules rules) { 106 | List propNames = rules.propertyNamesFor(table); 107 | if (propNames.size() == 0) return null; 108 | Object[] props = new Object[propNames.size() * 2]; 109 | for (int i = 0; i < propNames.size(); i++) { 110 | props[i * 2] = propNames.get(i);//[i]; 111 | } 112 | return props; 113 | } 114 | 115 | protected Object[] extractProps(TableInfo table, Rules rules, ResultSet rs, Object[] props) throws SQLException, IOException { 116 | if (table.fieldCount() == 0) return NO_PROPS; 117 | 118 | int length = props.length / 2; 119 | Object[] newProps = Arrays.copyOf(props, length * 2); 120 | for (int i = 0; i < length; i++) { 121 | String field = table.fields.get(i); 122 | newProps[1 + i * 2] = rules.convertValue(table, field, rs.getObject(field)); 123 | } 124 | return newProps; 125 | } 126 | } 127 | -------------------------------------------------------------------------------- /src/main/java/org/neo4j/imports/DataReader.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (c) 2015 Michael Hunger 3 | * 4 | * This file is part of Relational to Neo4j Importer. 5 | * 6 | * Relational to Neo4j Importer is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * Relational to Neo4j Importer is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with Relational to Neo4j Importer. If not, see . 18 | */ 19 | package org.neo4j.imports; 20 | 21 | import java.sql.Connection; 22 | import java.sql.ResultSet; 23 | import java.sql.SQLException; 24 | 25 | /** 26 | * @author mh 27 | * @since 01.03.15 28 | */ 29 | public class DataReader { 30 | private final Connection conn; 31 | 32 | public DataReader(Connection conn) { 33 | this.conn = conn; 34 | } 35 | 36 | public ResultSet readTableData(TableInfo table) throws SQLException { 37 | // todo custom sql statements, limit, skip fields, fixed field order, 38 | return conn.createStatement().executeQuery("SELECT * from " + table.table); 39 | } 40 | } 41 | -------------------------------------------------------------------------------- /src/main/java/org/neo4j/imports/DatabaseImporter.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (c) 2015 Michael Hunger 3 | * 4 | * This file is part of Relational to Neo4j Importer. 5 | * 6 | * Relational to Neo4j Importer is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * Relational to Neo4j Importer is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with Relational to Neo4j Importer. If not, see . 18 | */ 19 | package org.neo4j.imports; 20 | 21 | import org.neo4j.kernel.logging.SystemOutLogging; 22 | import org.neo4j.unsafe.impl.batchimport.InputIterable; 23 | import org.neo4j.unsafe.impl.batchimport.ParallelBatchImporter; 24 | import org.neo4j.unsafe.impl.batchimport.cache.NumberArrayFactory; 25 | import org.neo4j.unsafe.impl.batchimport.cache.idmapping.IdGenerator; 26 | import org.neo4j.unsafe.impl.batchimport.cache.idmapping.IdGenerators; 27 | import org.neo4j.unsafe.impl.batchimport.cache.idmapping.IdMapper; 28 | import org.neo4j.unsafe.impl.batchimport.cache.idmapping.IdMappers; 29 | import org.neo4j.unsafe.impl.batchimport.input.Collector; 30 | import org.neo4j.unsafe.impl.batchimport.input.Input; 31 | import org.neo4j.unsafe.impl.batchimport.input.InputNode; 32 | import org.neo4j.unsafe.impl.batchimport.input.InputRelationship; 33 | import schemacrawler.schemacrawler.SchemaCrawlerException; 34 | 35 | import java.io.IOException; 36 | import java.io.OutputStream; 37 | import java.sql.Connection; 38 | import java.sql.DriverManager; 39 | import java.sql.SQLException; 40 | 41 | import static org.neo4j.unsafe.impl.batchimport.Configuration.DEFAULT; 42 | import static org.neo4j.unsafe.impl.batchimport.staging.ExecutionMonitors.defaultVisible; 43 | 44 | /** 45 | * @author mh 46 | * @since 01.03.15 47 | */ 48 | public class DatabaseImporter { 49 | 50 | private final String storeDir; 51 | private final DataReader reader; 52 | private final Rules rules; 53 | private final TableInfo[] tables; 54 | 55 | public DatabaseImporter(String jdbcUrl, String schema, String storeDir, Rules rules) throws SQLException, SchemaCrawlerException { 56 | this.storeDir = storeDir; 57 | this.rules = rules; 58 | Connection conn = DriverManager.getConnection(jdbcUrl); 59 | tables = MetaDataReader.extractTables(conn, schema, rules); 60 | reader = new DataReader(conn); 61 | } 62 | 63 | public static void main(String[] args) throws Exception { 64 | String[] skip = new String[args.length - 3]; 65 | System.arraycopy(args, 3, skip, 0, args.length - 3); 66 | new DatabaseImporter(args[0], args[1], args[2], new Rules(skip)).run(); 67 | } 68 | 69 | public void run() throws IOException { 70 | ParallelBatchImporter importer = new ParallelBatchImporter(storeDir, DEFAULT, new SystemOutLogging(), defaultVisible()); 71 | 72 | importer.doImport(new Input() { 73 | @Override 74 | public InputIterable nodes() { 75 | return new NodeGenerator(reader, rules, tables); 76 | } 77 | 78 | @Override 79 | public InputIterable relationships() { 80 | return new RelationshipGenerator(reader, rules, tables); 81 | } 82 | 83 | @Override 84 | public IdMapper idMapper() { 85 | return IdMappers.strings(NumberArrayFactory.AUTO); 86 | } 87 | 88 | @Override 89 | public IdGenerator idGenerator() { 90 | return IdGenerators.startingFromTheBeginning(); 91 | } 92 | 93 | @Override 94 | public boolean specificRelationshipIds() { 95 | return false; 96 | } 97 | 98 | @Override 99 | public Collector badRelationshipsCollector(OutputStream outputStream) { 100 | return new Collector.Adapter() { 101 | @Override 102 | public void collect(InputRelationship inputRelationship, Object o) { 103 | System.err.println("Bad Rel: " + inputRelationship); 104 | throw new RuntimeException("Bad Rel"); 105 | } 106 | }; 107 | } 108 | }); 109 | } 110 | } 111 | -------------------------------------------------------------------------------- /src/main/java/org/neo4j/imports/MetaDataReader.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (c) 2015 Michael Hunger 3 | * 4 | * This file is part of Relational to Neo4j Importer. 5 | * 6 | * Relational to Neo4j Importer is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * Relational to Neo4j Importer is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with Relational to Neo4j Importer. If not, see . 18 | */ 19 | package org.neo4j.imports; 20 | 21 | import schemacrawler.schema.*; 22 | import schemacrawler.schemacrawler.InclusionRule; 23 | import schemacrawler.schemacrawler.SchemaCrawlerException; 24 | import schemacrawler.schemacrawler.SchemaCrawlerOptions; 25 | import schemacrawler.schemacrawler.SchemaInfoLevel; 26 | import schemacrawler.utility.SchemaCrawlerUtility; 27 | 28 | import java.sql.Connection; 29 | import java.sql.SQLException; 30 | import java.util.*; 31 | 32 | /** 33 | * @author mh 34 | * @since 01.03.15 35 | */ 36 | public class MetaDataReader { 37 | static TableInfo[] extractTables(Connection conn, final String schemaName, Rules rules) throws SchemaCrawlerException, SQLException { 38 | ArrayList tableList = new ArrayList(100); 39 | 40 | final SchemaCrawlerOptions options = new SchemaCrawlerOptions(); 41 | options.setSchemaInfoLevel(SchemaInfoLevel.standard()); 42 | System.out.println("my catalog =" + conn.getCatalog()); 43 | options.setSchemaInclusionRule(new InclusionRule() { 44 | @Override public boolean test(String anObject) { 45 | return schemaName.equals(anObject); 46 | } 47 | }); 48 | 49 | final Catalog catalog = SchemaCrawlerUtility.getCatalog(conn, options); 50 | System.out.println("schem ! "); 51 | 52 | 53 | final Schema schema = catalog.getSchema(schemaName); 54 | System.out.println("Schema: " + schema); 55 | 56 | for (final Table table : catalog.getTables(schema)) { 57 | String tableName = table.getName(); 58 | 59 | System.out.println(table + " pk " + table.getPrimaryKey() + " fks " + table.getForeignKeys() + " type " + table.getTableType()); 60 | if (rules.skipTable(tableName) || table.getTableType().isView()) { 61 | System.out.println("SKIPPED"); 62 | continue; 63 | } 64 | List columns = table.getColumns(); 65 | List fields = new ArrayList<>(columns.size()); 66 | for (final Column column : columns) { 67 | // System.out.println(" o--> " + column + " pk: "+ column.isPartOfPrimaryKey() + " fk: " + column.isPartOfForeignKey()); 68 | String columnName = column.getName(); 69 | if (column.isPartOfPrimaryKey() && rules.skipPrimaryKey(tableName, columnName)) { 70 | // skip, todo strategy 71 | } else if (column.isPartOfForeignKey()) { 72 | // skip, todo strategy 73 | } else { 74 | fields.add(columnName); 75 | } 76 | } 77 | Map, String> fks = extractForeignKeys(table); 78 | tableList.add(TableInfo.add(tableName, extractPrimaryKeys(table, fks), fields, fks)); 79 | } 80 | 81 | return tableList.toArray(new TableInfo[tableList.size()]); 82 | } 83 | 84 | private static Map, String> extractForeignKeys(Table table) { 85 | Collection foreignKeys = table.getForeignKeys(); 86 | Map, String> fks = fks = new LinkedHashMap<>(10); 87 | if (foreignKeys != null) { 88 | for (ForeignKey foreignKey : foreignKeys) { 89 | // todo handle composite keys 90 | List columnReferences = foreignKey.getColumnReferences(); 91 | if (columnReferences.isEmpty()) continue; 92 | ForeignKeyColumnReference firstReference = columnReferences.get(0); 93 | String otherTableName = firstReference.getPrimaryKeyColumn().getParent().getName(); 94 | List keys = new ArrayList<>(3); 95 | for (ForeignKeyColumnReference reference : columnReferences) { 96 | // todo assert that all have the same parent 97 | Table otherTable = reference.getPrimaryKeyColumn().getParent(); 98 | Table thisTable = reference.getForeignKeyColumn().getParent(); 99 | if (otherTable.equals(table) && !thisTable.equals(table)) continue; 100 | if (!otherTable.getName().equals(otherTableName)) { 101 | throw new IllegalStateException("Foreign Key to different tables " + reference + " inconsistent with " + firstReference); 102 | } 103 | keys.add(reference.getForeignKeyColumn().getName()); 104 | } 105 | if (!keys.isEmpty()) fks.put(keys, otherTableName); 106 | } 107 | } 108 | return fks; 109 | } 110 | 111 | private static List extractPrimaryKeys(Table table, Map, String> fks) { 112 | // todo handle composite keys 113 | List pks = new ArrayList<>(); 114 | // String pk = null; 115 | if (table.getPrimaryKey() != null) { 116 | List pkColumns = table.getPrimaryKey().getColumns(); 117 | for (IndexColumn pkColumn : pkColumns) { 118 | String pkName = pkColumn.getName(); 119 | //TODO check and think 120 | // if (fks.containsKey(pkName)) continue; 121 | //TODO rule 122 | // if (isForeignKeyPart(fks, pkName)) continue; 123 | pks.add(pkName); 124 | } 125 | // System.out.println("Real? Primary Keys " + pks); 126 | } 127 | return pks; 128 | } 129 | 130 | private static boolean isForeignKeyPart(Map, String> fks, String columnName) { 131 | for (List keys : fks.keySet()) { 132 | if (keys.contains(columnName)) return true; 133 | } 134 | return false; 135 | } 136 | } 137 | -------------------------------------------------------------------------------- /src/main/java/org/neo4j/imports/NodeGenerator.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (c) 2015 Michael Hunger 3 | * 4 | * This file is part of Relational to Neo4j Importer. 5 | * 6 | * Relational to Neo4j Importer is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * Relational to Neo4j Importer is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with Relational to Neo4j Importer. If not, see . 18 | */ 19 | package org.neo4j.imports; 20 | 21 | import org.neo4j.unsafe.impl.batchimport.input.Group; 22 | import org.neo4j.unsafe.impl.batchimport.input.InputNode; 23 | 24 | import java.sql.ResultSet; 25 | import java.sql.SQLException; 26 | import java.util.Iterator; 27 | 28 | import static org.neo4j.imports.StreamUtil.iteratorOf; 29 | 30 | /** 31 | * @author mh 32 | * @since 01.03.15 33 | */ 34 | public class NodeGenerator extends AbstractGenerator { 35 | 36 | private final Rules rules; 37 | private final DataReader reader; 38 | 39 | public NodeGenerator(DataReader reader, Rules rules, TableInfo[] tables) { 40 | super(tables); 41 | this.rules = rules; 42 | this.reader = reader; 43 | } 44 | 45 | Iterator streamNodes(final TableInfo table) throws SQLException { 46 | System.out.println("\nCreating nodes for " + table); 47 | if (rules.isNode(table)) { 48 | final ResultSet rs = reader.readTableData(table); 49 | final Group group = new Group.Adapter(table.index, table.table); 50 | final String[] labels = rules.labelsFor(table); 51 | final Object[] props = prepareProps(table, rules); 52 | 53 | return iteratorOf(new StreamUtil.Supplier() { 54 | @Override public InputNode get() throws Exception { 55 | if (rs.next()) { 56 | return new InputNode(table.table, rs.getRow(), 0, group, 57 | extractPrimaryKeys(rules, rs, table.pk), extractProps(table, rules, rs, props), 58 | null, labels, null); 59 | } 60 | rs.getStatement().close(); 61 | return null; 62 | } 63 | }); 64 | } 65 | return StreamUtil.emptyIterator(); 66 | } 67 | } 68 | -------------------------------------------------------------------------------- /src/main/java/org/neo4j/imports/Options.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (c) 2015 Michael Hunger 3 | * 4 | * This file is part of Relational to Neo4j Importer. 5 | * 6 | * Relational to Neo4j Importer is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * Relational to Neo4j Importer is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with Relational to Neo4j Importer. If not, see . 18 | */ 19 | package org.neo4j.imports; 20 | 21 | import java.util.ArrayList; 22 | import java.util.List; 23 | import java.util.regex.Pattern; 24 | 25 | /** 26 | * @author mh 27 | * @since 29.03.15 28 | */ 29 | public class Options { 30 | 31 | enum Rename { 32 | camelcase() { 33 | public String transform(String source) { return underscoreToCamelCase(source); } 34 | }, lowerCamelCase() { 35 | public String transform(String source) { return deCapitalize(underscoreToCamelCase(source)); } 36 | }, downcase() { 37 | public String transform(String source) { return camelWhiteSpaceToUnderscore(source).toLowerCase(); } 38 | }, upcase() { 39 | public String transform(String source) { return camelWhiteSpaceToUnderscore(source).toUpperCase(); } 40 | }, none() { 41 | public String transform(String source) { return source; } 42 | }, capitalize() { 43 | public String transform(String source) { return capitalize(source); } 44 | }; 45 | 46 | private static String underscoreToCamelCase(String source) { 47 | String result = ""; 48 | for (String part : source.split("[ _]+")) { 49 | result += capitalize(part); 50 | } 51 | return result; 52 | } 53 | private static String capitalize(String source) { 54 | return source == null || source.trim().isEmpty() ? source : source.substring(0,1).toUpperCase()+source.substring(1); 55 | } 56 | private static String deCapitalize(String source) { 57 | return source == null || source.trim().isEmpty() ? source : source.substring(0,1).toLowerCase()+source.substring(1); 58 | } 59 | 60 | private static String camelWhiteSpaceToUnderscore(String source) { 61 | return source.replaceAll("([a-z]) ?([A-Z])", "$1_$2").replaceAll("[_ ]+", "_"); 62 | } 63 | 64 | public abstract String transform(String source); 65 | } 66 | private String database; 67 | private String schema; 68 | private String jdbc; 69 | private Pattern skip; 70 | private Pattern relationship; 71 | private Rename labelRename = Rename.camelcase; 72 | private Rename relationshipRename = Rename.upcase; 73 | private Rename propertyRename = Rename.lowerCamelCase; 74 | 75 | boolean verify() { 76 | return false; 77 | } 78 | 79 | Options setSkipList(String skipList) { 80 | if (skipList==null || skipList.trim().isEmpty()) return this; 81 | String normalized = "^("+skipList.replaceAll("\\s*,\\s*", "|").replaceAll("\\.", "\\.").replaceAll("%", ".*")+")"; 82 | this.skip = java.util.regex.Pattern.compile(normalized,Pattern.CASE_INSENSITIVE); 83 | return this; 84 | } 85 | 86 | boolean shouldSkip(String table, String field) { 87 | return skip != null && skip.matcher(table+"."+field).find(); 88 | } 89 | 90 | public String getDatabase() { 91 | return database; 92 | } 93 | 94 | public String getSchema() { 95 | return schema; 96 | } 97 | 98 | public String getJdbc() { 99 | return jdbc; 100 | } 101 | } 102 | -------------------------------------------------------------------------------- /src/main/java/org/neo4j/imports/RelInfo.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (c) 2015 Michael Hunger 3 | * 4 | * This file is part of Relational to Neo4j Importer. 5 | * 6 | * Relational to Neo4j Importer is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * Relational to Neo4j Importer is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with Relational to Neo4j Importer. If not, see . 18 | */ 19 | package org.neo4j.imports; 20 | 21 | import org.neo4j.unsafe.impl.batchimport.input.Group; 22 | 23 | import java.util.List; 24 | 25 | /** 26 | * @author mh 27 | * @since 01.03.15 28 | */ 29 | public class RelInfo { 30 | public final Group group; 31 | public final String type; 32 | public final List fields; 33 | public final String fieldsString; 34 | 35 | public RelInfo(Group group, String type, List field) { 36 | this.group = group; 37 | this.type = type; 38 | this.fields = field; 39 | this.fieldsString = field.toString(); 40 | } 41 | } 42 | -------------------------------------------------------------------------------- /src/main/java/org/neo4j/imports/RelationshipGenerator.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (c) 2015 Michael Hunger 3 | * 4 | * This file is part of Relational to Neo4j Importer. 5 | * 6 | * Relational to Neo4j Importer is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * Relational to Neo4j Importer is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with Relational to Neo4j Importer. If not, see . 18 | */ 19 | package org.neo4j.imports; 20 | 21 | import org.neo4j.unsafe.impl.batchimport.input.Group; 22 | import org.neo4j.unsafe.impl.batchimport.input.InputRelationship; 23 | 24 | import java.sql.ResultSet; 25 | import java.sql.SQLException; 26 | import java.util.Iterator; 27 | import java.util.List; 28 | 29 | import static org.neo4j.imports.StreamUtil.iteratorOf; 30 | 31 | /** 32 | * @author mh 33 | * @since 01.03.15 34 | */ 35 | public class RelationshipGenerator extends AbstractGenerator { 36 | 37 | private final Rules rules; 38 | private final DataReader reader; 39 | 40 | public RelationshipGenerator(DataReader reader, Rules rules, TableInfo[] tables) { 41 | super(tables); 42 | this.reader = reader; 43 | this.rules = rules; 44 | } 45 | 46 | Iterator streamNodes(TableInfo table) throws SQLException { 47 | System.out.println("\nCreating relationships for " + table); 48 | if (rules.isNode(table)) { 49 | return importPkRels(table); 50 | } else { 51 | return importFkRels(table); 52 | } 53 | } 54 | 55 | private Iterator importPkRels(final TableInfo table) throws SQLException { 56 | final ResultSet rs = reader.readTableData(table); 57 | final Group group = new Group.Adapter(table.index, table.table); 58 | final List relInfos = rules.relsFor(table); 59 | 60 | return iteratorOf(new StreamUtil.Supplier() { 61 | private Object id; 62 | private Iterator iterator; 63 | 64 | @Override public InputRelationship get() throws Exception { 65 | while (true) { 66 | if (iterator == null || !iterator.hasNext()) { // outer loop, fetch next row 67 | if (rs.next()) { 68 | id = extractPrimaryKeys(rules, rs, table.pk); 69 | iterator = relInfos.iterator(); 70 | } else { 71 | rs.getStatement().close(); 72 | return null; 73 | } 74 | } 75 | 76 | while (iterator.hasNext()) { 77 | RelInfo relInfo = iterator.next(); 78 | Object fkId = extractPrimaryKeys(rules, rs, relInfo.fields); 79 | if (fkId != null) { 80 | return new InputRelationship(table.table + "." + relInfo.fieldsString, rs.getRow(), 0, 81 | NO_PROPS, null, group, id, relInfo.group, fkId, relInfo.type, null); 82 | } 83 | } 84 | } 85 | } 86 | }); 87 | } 88 | 89 | private Iterator importFkRels(final TableInfo table) throws SQLException { 90 | final ResultSet rs = reader.readTableData(table); 91 | final String relType = rules.relTypeFor(table); 92 | final Object[] props = prepareProps(table, rules); 93 | final List relInfos = rules.relsFor(table); 94 | 95 | return iteratorOf(new StreamUtil.Supplier() { 96 | @Override public InputRelationship get() throws Exception { 97 | while (rs.next()) { 98 | Object fk1 = extractPrimaryKeys(rules, rs, relInfos.get(0).fields); 99 | Object fk2 = extractPrimaryKeys(rules, rs, relInfos.get(1).fields); 100 | if (fk1 != null && fk2 != null) { 101 | return new InputRelationship(table.table, rs.getRow(), 0, extractProps(table, rules, rs, props), 102 | null, relInfos.get(0).group, fk1, relInfos.get(1).group, fk2, relType, null); 103 | } 104 | } 105 | rs.getStatement().close(); 106 | return null; 107 | } 108 | }); 109 | } 110 | } 111 | -------------------------------------------------------------------------------- /src/main/java/org/neo4j/imports/Rules.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (c) 2015 Michael Hunger 3 | * 4 | * This file is part of Relational to Neo4j Importer. 5 | * 6 | * Relational to Neo4j Importer is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * Relational to Neo4j Importer is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with Relational to Neo4j Importer. If not, see . 18 | */ 19 | package org.neo4j.imports; 20 | 21 | import org.apache.commons.io.IOUtils; 22 | import org.neo4j.unsafe.impl.batchimport.input.Group; 23 | 24 | import java.io.ByteArrayOutputStream; 25 | import java.io.IOException; 26 | import java.math.BigDecimal; 27 | import java.sql.Blob; 28 | import java.sql.SQLException; 29 | import java.util.*; 30 | 31 | import static java.util.Arrays.asList; 32 | 33 | /** 34 | * @author mh 35 | * @since 01.03.15 36 | */ 37 | public class Rules { 38 | 39 | private final Set skipTables = new HashSet<>(); 40 | 41 | public Rules(String... skipTables) { 42 | this.skipTables.addAll((asList(skipTables))); 43 | } 44 | 45 | String propertyNameFor(TableInfo table, String field) { 46 | return field; 47 | } 48 | 49 | List propertyNamesFor(TableInfo table) { 50 | List result = new ArrayList<>(); 51 | for (String field : table.fields) { 52 | result.add(propertyNameFor(table, field)); 53 | } 54 | return result; 55 | } 56 | 57 | String[] labelsFor(TableInfo table) { 58 | return new String[]{labelFor(table.table)}; 59 | } 60 | 61 | public String labelFor(String table) { 62 | return unquote(table); 63 | } 64 | 65 | private String unquote(String name) { 66 | boolean quoted = name.charAt(0) == '`'; 67 | return quoted ? name.substring(1, name.length() - 1) : name; 68 | } 69 | 70 | String relTypeFor(TableInfo table) { 71 | return unquote(table.table).replaceAll("([a-z]) ?([A-Z])", "$1_$2").toUpperCase().replace(' ', '_'); 72 | } 73 | 74 | boolean isNode(TableInfo table) { 75 | return table.hasPk(); 76 | } 77 | 78 | List relsFor(TableInfo table) { 79 | if (table.fks == null) { 80 | return Collections.emptyList(); 81 | } 82 | List result = new ArrayList<>(); 83 | for (Map.Entry, String> entry : table.fks.entrySet()) { 84 | 85 | TableInfo tableInfo = TableInfo.get(entry.getValue()); 86 | // todo fix 87 | result.add(new RelInfo(new Group.Adapter(tableInfo.index, tableInfo.table), 88 | relTypeFor(tableInfo), entry.getKey())); 89 | } 90 | return result; 91 | } 92 | 93 | public Object transformPk(Object pk) { 94 | if (pk == null) return null; 95 | else return pk.toString(); 96 | } 97 | 98 | public Object convertValue(TableInfo table, String field, Object value) throws SQLException, IOException { 99 | if (value instanceof Date) { 100 | // return 0; 101 | return ((Date) value).getTime(); 102 | } 103 | if (value instanceof BigDecimal) return ((BigDecimal) value).doubleValue(); // or string?? 104 | if (value instanceof Blob) { 105 | ByteArrayOutputStream bo = new ByteArrayOutputStream(); 106 | IOUtils.copy(((Blob) value).getBinaryStream(), bo); 107 | return bo.toByteArray(); // or string?? 108 | } 109 | // todo importer should ignore null values 110 | if (value == null) return ""; 111 | return value; 112 | } 113 | 114 | 115 | public boolean skipTable(String tableName) { 116 | return skipTables.contains(tableName); 117 | } 118 | 119 | public boolean skipPrimaryKey(String tableName, String columnName) { 120 | return false; 121 | } 122 | } 123 | -------------------------------------------------------------------------------- /src/main/java/org/neo4j/imports/StreamUtil.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (c) 2015 Michael Hunger 3 | * 4 | * This file is part of Relational to Neo4j Importer. 5 | * 6 | * Relational to Neo4j Importer is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * Relational to Neo4j Importer is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with Relational to Neo4j Importer. If not, see . 18 | */ 19 | package org.neo4j.imports; 20 | 21 | import java.util.Iterator; 22 | 23 | /** 24 | * @author tbaum 25 | * @since 15.03.2015 26 | */ 27 | public class StreamUtil { 28 | 29 | public static Iterator iteratorOf(final Supplier s) { 30 | return new Iterator() { 31 | T next = nextValue(); 32 | 33 | @Override public boolean hasNext() { 34 | return next != null; 35 | } 36 | 37 | @Override public T next() { 38 | T result = next; 39 | next = nextValue(); 40 | return result; 41 | } 42 | public void remove() {} 43 | 44 | T nextValue() { 45 | try { 46 | return s.get(); 47 | } catch (Exception e) { 48 | throw new RuntimeException(e); 49 | } 50 | } 51 | }; 52 | } 53 | 54 | static Iterator emptyIterator() { 55 | return new Iterator() { 56 | @Override public boolean hasNext() { 57 | return false; 58 | } 59 | 60 | @Override public T next() { 61 | return null; 62 | } 63 | public void remove() {} 64 | }; 65 | } 66 | 67 | interface Supplier { 68 | T get() throws Exception; 69 | } 70 | } 71 | -------------------------------------------------------------------------------- /src/main/java/org/neo4j/imports/TableInfo.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (c) 2015 Michael Hunger 3 | * 4 | * This file is part of Relational to Neo4j Importer. 5 | * 6 | * Relational to Neo4j Importer is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * Relational to Neo4j Importer is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with Relational to Neo4j Importer. If not, see . 18 | */ 19 | package org.neo4j.imports; 20 | 21 | import java.util.Arrays; 22 | import java.util.LinkedHashMap; 23 | import java.util.List; 24 | import java.util.Map; 25 | import java.util.concurrent.atomic.AtomicInteger; 26 | 27 | /** 28 | * @author mh 29 | * @since 01.03.15 30 | */ 31 | public class TableInfo { 32 | public static AtomicInteger TABLE_INDEX = new AtomicInteger(); 33 | private static final Map TABLES = new LinkedHashMap<>(); 34 | 35 | public final int index = TABLE_INDEX.getAndIncrement(); 36 | public final String table; 37 | public final List pk; 38 | public final List fields; 39 | public final Map, String> fks; 40 | 41 | public TableInfo(String table,List< String> pk, List fields, Map, String> fks) { 42 | this.table = table; 43 | this.pk = pk; 44 | this.fields = fields; 45 | this.fks = fks; 46 | } 47 | 48 | public boolean hasPk() { 49 | return pk != null && pk.size() > 0; 50 | } 51 | 52 | public int fieldCount() { 53 | return fields.size(); 54 | } 55 | 56 | public static TableInfo get(String table) { 57 | return TABLES.get(table); 58 | } 59 | 60 | public static TableInfo add(String table, List pks, List fields, Map, String> fks) { 61 | TableInfo tableInfo = new TableInfo(table, pks, fields, fks); 62 | TABLES.put(table, tableInfo); 63 | return tableInfo; 64 | } 65 | 66 | @Override 67 | public String toString() { 68 | return "TableInfo{" + 69 | "index=" + index + 70 | ", table='" + table + '\'' + 71 | ", pk='" + pk + '\'' + 72 | ", fields=" + fields + 73 | ", fks=" + fks + 74 | '}'; 75 | } 76 | } 77 | -------------------------------------------------------------------------------- /src/test/java/org/neo4j/imports/DataImporterEmployeeTest.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (c) 2015 Michael Hunger 3 | * 4 | * This file is part of Relational to Neo4j Importer. 5 | * 6 | * Relational to Neo4j Importer is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * Relational to Neo4j Importer is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with Relational to Neo4j Importer. If not, see . 18 | */ 19 | package org.neo4j.imports; 20 | 21 | import org.neo4j.graphdb.GraphDatabaseService; 22 | import org.neo4j.graphdb.Transaction; 23 | import org.neo4j.graphdb.factory.GraphDatabaseFactory; 24 | import org.neo4j.helpers.collection.IteratorUtil; 25 | import org.neo4j.io.fs.FileUtils; 26 | import org.neo4j.tooling.GlobalGraphOperations; 27 | import org.perf4j.StopWatch; 28 | 29 | import java.io.File; 30 | 31 | /** 32 | * @author mh 33 | * @since 01.03.15 34 | * jdbc: http://dev.mysql.com/doc/connector-j/en/connector-j-reference-configuration-properties.html 35 | * Source: https://dev.mysql.com/doc/employee/en/employees-installation.html 36 | * Structure: https://dev.mysql.com/doc/employee/en/sakila-structure.html 37 | * Download: http://dev.mysql.com/doc/index-other.html 38 | */ 39 | public class DataImporterEmployeeTest { 40 | 41 | public static final String STORE_DIR = "target/employee.db"; 42 | 43 | public static void main(String[] args) throws Exception { 44 | FileUtils.deleteRecursively(new File(STORE_DIR)); 45 | StopWatch watch = new StopWatch(); 46 | Rules rules = new Rules(); // asList("titles") 47 | new DatabaseImporter("jdbc:mysql://localhost:3306/employees?user=root", "employees", STORE_DIR, rules).run(); 48 | 49 | watch.lap("import"); 50 | System.err.println(watch.stop("import", importInfo())); 51 | } 52 | 53 | private static String importInfo() { 54 | GraphDatabaseService db = new GraphDatabaseFactory().newEmbeddedDatabase(STORE_DIR); 55 | 56 | try (Transaction tx = db.beginTx()) { 57 | int nodes = IteratorUtil.count(db.getAllNodes()); 58 | int rels = IteratorUtil.count(GlobalGraphOperations.at(db).getAllRelationships()); 59 | return "Imported nodes " + nodes + " rels " + rels; 60 | } finally { 61 | db.shutdown(); 62 | } 63 | } 64 | } 65 | -------------------------------------------------------------------------------- /src/test/java/org/neo4j/imports/DataImporterNorthwindTest.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (c) 2015 Michael Hunger 3 | * 4 | * This file is part of Relational to Neo4j Importer. 5 | * 6 | * Relational to Neo4j Importer is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * Relational to Neo4j Importer is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with Relational to Neo4j Importer. If not, see . 18 | */ 19 | package org.neo4j.imports; 20 | 21 | import org.neo4j.graphdb.GraphDatabaseService; 22 | import org.neo4j.graphdb.Transaction; 23 | import org.neo4j.graphdb.factory.GraphDatabaseFactory; 24 | import org.neo4j.helpers.collection.IteratorUtil; 25 | import org.neo4j.io.fs.FileUtils; 26 | import org.neo4j.tooling.GlobalGraphOperations; 27 | 28 | import java.io.File; 29 | 30 | /** 31 | * @author mh 32 | * @since 01.03.15 33 | * Download: https://code.google.com/p/northwindextended/downloads/detail?name=Northwind.MySQL5.sql 34 | */ 35 | public class DataImporterNorthwindTest { 36 | 37 | public static final String STORE_DIR = "target/northwind.db"; 38 | 39 | public static void main(String[] args) throws Exception { 40 | FileUtils.deleteRecursively(new File(STORE_DIR)); 41 | long time = System.currentTimeMillis(); 42 | Rules rules = new Rules(); // asList("titles") 43 | new DatabaseImporter("jdbc:mysql://localhost:3306/northwind?user=root", "northwind", STORE_DIR, rules).run(); 44 | long delta = (System.currentTimeMillis() - time) / 1000; 45 | String result = importInfo(); 46 | System.out.println(result + " in " + delta + " seconds"); 47 | } 48 | 49 | private static String importInfo() { 50 | GraphDatabaseService db = new GraphDatabaseFactory().newEmbeddedDatabase(STORE_DIR); 51 | try (Transaction tx = db.beginTx()) { 52 | int nodes = IteratorUtil.count(db.getAllNodes()); 53 | int rels = IteratorUtil.count(GlobalGraphOperations.at(db).getAllRelationships()); 54 | return "Imported nodes " + nodes + " rels " + rels; 55 | } finally { 56 | db.shutdown(); 57 | } 58 | } 59 | } 60 | -------------------------------------------------------------------------------- /src/test/java/org/neo4j/imports/DataImporterSakilaTest.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (c) 2015 Michael Hunger 3 | * 4 | * This file is part of Relational to Neo4j Importer. 5 | * 6 | * Relational to Neo4j Importer is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * Relational to Neo4j Importer is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with Relational to Neo4j Importer. If not, see . 18 | */ 19 | package org.neo4j.imports; 20 | 21 | import org.neo4j.graphdb.GraphDatabaseService; 22 | import org.neo4j.graphdb.Transaction; 23 | import org.neo4j.graphdb.factory.GraphDatabaseFactory; 24 | import org.neo4j.helpers.collection.IteratorUtil; 25 | import org.neo4j.io.fs.FileUtils; 26 | import org.neo4j.tooling.GlobalGraphOperations; 27 | 28 | import java.io.File; 29 | 30 | /** 31 | * @author mh 32 | * @since 01.03.15 33 | * Install: http://dev.mysql.com/doc/sakila/en/sakila-installation.html 34 | * Structure: http://dev.mysql.com/doc/sakila/en/sakila-structure.html 35 | * Download: http://dev.mysql.com/doc/index-other.html 36 | */ 37 | public class DataImporterSakilaTest { 38 | 39 | public static final String STORE_DIR = "target/sakila.db"; 40 | 41 | public static void main(String[] args) throws Exception { 42 | FileUtils.deleteRecursively(new File(STORE_DIR)); 43 | long time = System.currentTimeMillis(); 44 | new DatabaseImporter("jdbc:mysql://localhost:3306/sakila?user=root", "sakila", STORE_DIR, new Rules()).run(); 45 | 46 | long delta = (System.currentTimeMillis() - time) / 1000; 47 | String result = importInfo(); 48 | System.out.println(result + " in " + delta + " seconds"); 49 | } 50 | 51 | private static String importInfo() { 52 | GraphDatabaseService db = new GraphDatabaseFactory().newEmbeddedDatabase(STORE_DIR); 53 | 54 | try (Transaction tx = db.beginTx()) { 55 | int nodes = IteratorUtil.count(db.getAllNodes()); 56 | int rels = IteratorUtil.count(GlobalGraphOperations.at(db).getAllRelationships()); 57 | return "Imported nodes " + nodes + " rels " + rels; 58 | } finally { 59 | db.shutdown(); 60 | } 61 | } 62 | } 63 | -------------------------------------------------------------------------------- /src/test/java/org/neo4j/imports/DataImporterTest.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (c) 2015 Michael Hunger 3 | * 4 | * This file is part of Relational to Neo4j Importer. 5 | * 6 | * Relational to Neo4j Importer is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * Relational to Neo4j Importer is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with Relational to Neo4j Importer. If not, see . 18 | */ 19 | package org.neo4j.imports; 20 | 21 | import org.junit.Assert; 22 | import org.neo4j.graphdb.GraphDatabaseService; 23 | import org.neo4j.graphdb.Transaction; 24 | import org.neo4j.graphdb.factory.GraphDatabaseFactory; 25 | import org.neo4j.helpers.collection.IteratorUtil; 26 | import org.neo4j.io.fs.FileUtils; 27 | import org.neo4j.tooling.GlobalGraphOperations; 28 | 29 | import java.io.File; 30 | import java.sql.*; 31 | import java.util.Properties; 32 | 33 | /** 34 | * @author mh 35 | * @since 01.03.15 36 | */ 37 | public class DataImporterTest { 38 | 39 | public static final String STORE_DIR = "target/test.db"; 40 | public static final int USERS = 100000; 41 | public static final int FRIENDSHIPS = 100000; 42 | 43 | public static void main(String[] args) throws Exception { 44 | setupDatabase(); 45 | 46 | FileUtils.deleteRecursively(new File(STORE_DIR)); 47 | long time = System.currentTimeMillis(); 48 | new DatabaseImporter("jdbc:derby:memory:test", null, STORE_DIR, new Rules()).run(); 49 | 50 | String result = assertImport(); 51 | System.out.println(result + " in " + (System.currentTimeMillis() - time) / 1000 + " seconds"); 52 | } 53 | 54 | private static void setupDatabase() throws SQLException { 55 | Connection connection = DriverManager.getConnection("jdbc:derby:memory:test;create=true", new Properties()); 56 | Statement statement = connection.createStatement(); 57 | // id INT NOT NULL GENERATED ALWAYS AS IDENTITY (START WITH 0, INCREMENT BY 1) 58 | statement.execute("CREATE TABLE USERS (id INT NOT NULL, name varchar(20), constraint users_pk_id primary key(id))"); 59 | statement.execute("CREATE TABLE FRIENDS (id1 INT, id2 INT, " + 60 | " constraint fk_users_id1 foreign key(id1) references users(id)," + 61 | " constraint fk_users_id2 foreign key(id2) references users(id)" + 62 | ")"); 63 | insertUsers(connection, USERS); 64 | insertFriendships(connection, FRIENDSHIPS); 65 | // statement.execute("INSERT INTO USERS (id,name) values(0,'Alice')"); 66 | // statement.execute("INSERT INTO USERS (id,name) values(1,'Bob')"); 67 | // statement.execute("INSERT INTO FRIENDS (id1,id2) values(0,1)"); 68 | } 69 | 70 | private static String assertImport() { 71 | GraphDatabaseService db = new GraphDatabaseFactory().newEmbeddedDatabase(STORE_DIR); 72 | 73 | try (Transaction tx = db.beginTx()) { 74 | int nodes = IteratorUtil.count(db.getAllNodes()); 75 | Assert.assertEquals(USERS, nodes); 76 | int rels = IteratorUtil.count(GlobalGraphOperations.at(db).getAllRelationships()); 77 | Assert.assertEquals(FRIENDSHIPS, rels); 78 | return "Imported nodes " + nodes + " rels " + rels; 79 | } finally { 80 | db.shutdown(); 81 | } 82 | } 83 | 84 | private static void insertUsers(Connection connection, int max) throws SQLException { 85 | PreparedStatement pstmt = connection.prepareStatement("INSERT INTO USERS (id,name) values(?,?)"); 86 | for (int i = 0; i < max; i++) { 87 | pstmt.setInt(1, i); 88 | pstmt.setString(2, "Name " + i); 89 | pstmt.addBatch(); 90 | } 91 | pstmt.executeBatch(); 92 | pstmt.close(); 93 | } 94 | 95 | private static void insertFriendships(Connection connection, int max) throws SQLException { 96 | PreparedStatement pstmt = connection.prepareStatement("INSERT INTO FRIENDS (id1,id2) values(?,?)"); 97 | for (int i = 0; i < max; i++) { 98 | pstmt.setInt(1, i); 99 | pstmt.setInt(2, (i + 100) % max); 100 | pstmt.addBatch(); 101 | } 102 | pstmt.executeBatch(); 103 | pstmt.close(); 104 | } 105 | } 106 | -------------------------------------------------------------------------------- /src/test/java/org/neo4j/imports/OptionsTest.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (c) 2015 Michael Hunger 3 | * 4 | * This file is part of Relational to Neo4j Importer. 5 | * 6 | * Relational to Neo4j Importer is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * Relational to Neo4j Importer is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with Relational to Neo4j Importer. If not, see . 18 | */ 19 | package org.neo4j.imports; 20 | 21 | import org.junit.Test; 22 | import org.junit.Ignore; 23 | 24 | import static org.junit.Assert.*; 25 | import static org.neo4j.imports.Options.Rename.*; 26 | 27 | public class OptionsTest { 28 | @Test 29 | public void testRenameCamelCase() throws Exception { 30 | assertEquals("Foo",camelcase.transform("foo")); 31 | assertEquals("FooBar",camelcase.transform("foo_bar")); 32 | assertEquals("FooBar",camelcase.transform("foo bar")); 33 | assertEquals("FooBarFoo",camelcase.transform("foo bar__foo")); 34 | } 35 | @Test 36 | public void testRenameLowerCamelCase() throws Exception { 37 | assertEquals("foo",lowerCamelCase.transform("foo")); 38 | assertEquals("fooBar",lowerCamelCase.transform("foo_bar")); 39 | assertEquals("fooBar",lowerCamelCase.transform("foo bar")); 40 | assertEquals("fooBarFoo", lowerCamelCase.transform("foo bar__foo")); 41 | } 42 | @Test 43 | public void testRenameUpCase() throws Exception { 44 | assertEquals("FOO",upcase.transform("foo")); 45 | assertEquals("FOO_BAR",upcase.transform("foo_bar")); 46 | assertEquals("FOO_BAR",upcase.transform("fooBar")); 47 | assertEquals("FOO_BAR",upcase.transform("foo bar")); 48 | assertEquals("FOO_BAR_FOO", upcase.transform("foo bar__foo")); 49 | assertEquals("FOO_BAR_FOO", upcase.transform("fooBar Foo")); 50 | } 51 | 52 | @Test 53 | @Ignore 54 | public void testSkipPattern() throws Exception { 55 | Options o = new Options(); 56 | assertTrue(o.setSkipList("table").shouldSkip("table", "field")); 57 | assertTrue(o.setSkipList("table%").shouldSkip("table25","field")); 58 | assertTrue(o.setSkipList("table.field").shouldSkip("table","field")); 59 | assertTrue(o.setSkipList("table,table2").shouldSkip("table","field")); 60 | assertTrue(o.setSkipList("table,table2").shouldSkip("table2","field")); 61 | assertTrue(o.setSkipList("table,table2").shouldSkip("table","field")); 62 | assertTrue(o.setSkipList("table,table2").shouldSkip("table",null)); 63 | assertFalse(o.setSkipList("table.field").shouldSkip("table","field2")); 64 | assertFalse(o.setSkipList("table.field").shouldSkip("table","field2")); 65 | 66 | } 67 | } 68 | -------------------------------------------------------------------------------- /src/test/java/org/neo4j/imports/SchemaCrawlerTest.java: -------------------------------------------------------------------------------- 1 | /** 2 | * Copyright (c) 2015 Michael Hunger 3 | * 4 | * This file is part of Relational to Neo4j Importer. 5 | * 6 | * Relational to Neo4j Importer is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * Relational to Neo4j Importer is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with Relational to Neo4j Importer. If not, see . 18 | */ 19 | package org.neo4j.imports; 20 | 21 | import schemacrawler.schema.Catalog; 22 | import schemacrawler.schema.Column; 23 | import schemacrawler.schema.Schema; 24 | import schemacrawler.schema.Table; 25 | import schemacrawler.schemacrawler.SchemaCrawlerException; 26 | import schemacrawler.schemacrawler.SchemaCrawlerOptions; 27 | import schemacrawler.schemacrawler.SchemaInfoLevel; 28 | import schemacrawler.utility.SchemaCrawlerUtility; 29 | 30 | import java.sql.*; 31 | import java.util.Properties; 32 | 33 | /** 34 | * @author mh 35 | * @since 01.03.15 36 | */ 37 | public class SchemaCrawlerTest { 38 | 39 | public static void main(String[] args) throws SQLException, SchemaCrawlerException, ClassNotFoundException { 40 | 41 | Driver driver = DriverManager.getDriver("jdbc:derby:memory:test;create=true"); 42 | Connection connection = DriverManager.getConnection("jdbc:derby:memory:test;create=true", new Properties()); 43 | Statement statement = connection.createStatement(); 44 | // id INT NOT NULL GENERATED ALWAYS AS IDENTITY (START WITH 0, INCREMENT BY 1) 45 | statement.execute("CREATE TABLE USERS (id INT NOT NULL, name varchar(20), constraint users_pk_id primary key(id))"); 46 | statement.execute("CREATE TABLE FRIENDS (id1 INT, id2 INT, " + 47 | " constraint fk_users_id1 foreign key(id1) references users(id)," + 48 | " constraint fk_users_id2 foreign key(id2) references users(id)" + 49 | ")"); 50 | 51 | final SchemaCrawlerOptions options = new SchemaCrawlerOptions(); 52 | options.setSchemaInfoLevel(SchemaInfoLevel.standard()); 53 | 54 | final Catalog catalog = SchemaCrawlerUtility.getCatalog(connection, options); 55 | 56 | for (final Schema schema : catalog.getSchemas()) { 57 | System.out.println(schema); 58 | for (final Table table : catalog.getTables(schema)) { 59 | System.out.println("o--> " + table + " pk " + table.getPrimaryKey() + " fks " + table.getForeignKeys() + " type " + table.getTableType()); 60 | for (final Column column : table.getColumns()) { 61 | System.out.println(" o--> " + column + " pk: " + column.isPartOfPrimaryKey() + " fk: " + column.isPartOfForeignKey()); 62 | } 63 | } 64 | } 65 | } 66 | } 67 | --------------------------------------------------------------------------------