├── .gitignore ├── .mvn └── wrapper │ ├── MavenWrapperDownloader.java │ ├── maven-wrapper.jar │ └── maven-wrapper.properties ├── README.md ├── mvnw ├── mvnw.cmd ├── pom.xml └── src ├── main ├── java │ └── com │ │ └── bezkoder │ │ └── spring │ │ └── hibernate │ │ └── onetomany │ │ ├── SpringBootOneToManyApplication.java │ │ ├── controller │ │ ├── CommentController.java │ │ └── TutorialController.java │ │ ├── exception │ │ ├── ControllerExceptionHandler.java │ │ ├── ErrorMessage.java │ │ └── ResourceNotFoundException.java │ │ ├── model │ │ ├── Comment.java │ │ └── Tutorial.java │ │ └── repository │ │ ├── CommentRepository.java │ │ └── TutorialRepository.java └── resources │ └── application.properties └── test └── java └── com └── bezkoder └── spring └── hibernate └── onetomany └── SpringBootOneToManyApplicationTests.java /.gitignore: -------------------------------------------------------------------------------- 1 | HELP.md 2 | target/ 3 | !.mvn/wrapper/maven-wrapper.jar 4 | !**/src/main/**/target/ 5 | !**/src/test/**/target/ 6 | 7 | ### STS ### 8 | .apt_generated 9 | .classpath 10 | .factorypath 11 | .project 12 | .settings 13 | .springBeans 14 | .sts4-cache 15 | 16 | ### IntelliJ IDEA ### 17 | .idea 18 | *.iws 19 | *.iml 20 | *.ipr 21 | 22 | ### NetBeans ### 23 | /nbproject/private/ 24 | /nbbuild/ 25 | /dist/ 26 | /nbdist/ 27 | /.nb-gradle/ 28 | build/ 29 | !**/src/main/**/build/ 30 | !**/src/test/**/build/ 31 | 32 | ### VS Code ### 33 | .vscode/ 34 | -------------------------------------------------------------------------------- /.mvn/wrapper/MavenWrapperDownloader.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2007-present the original author or authors. 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * https://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | import java.net.*; 17 | import java.io.*; 18 | import java.nio.channels.*; 19 | import java.util.Properties; 20 | 21 | public class MavenWrapperDownloader { 22 | 23 | private static final String WRAPPER_VERSION = "0.5.6"; 24 | /** 25 | * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided. 26 | */ 27 | private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/" 28 | + WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + ".jar"; 29 | 30 | /** 31 | * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to 32 | * use instead of the default one. 33 | */ 34 | private static final String MAVEN_WRAPPER_PROPERTIES_PATH = 35 | ".mvn/wrapper/maven-wrapper.properties"; 36 | 37 | /** 38 | * Path where the maven-wrapper.jar will be saved to. 39 | */ 40 | private static final String MAVEN_WRAPPER_JAR_PATH = 41 | ".mvn/wrapper/maven-wrapper.jar"; 42 | 43 | /** 44 | * Name of the property which should be used to override the default download url for the wrapper. 45 | */ 46 | private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl"; 47 | 48 | public static void main(String args[]) { 49 | System.out.println("- Downloader started"); 50 | File baseDirectory = new File(args[0]); 51 | System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath()); 52 | 53 | // If the maven-wrapper.properties exists, read it and check if it contains a custom 54 | // wrapperUrl parameter. 55 | File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH); 56 | String url = DEFAULT_DOWNLOAD_URL; 57 | if(mavenWrapperPropertyFile.exists()) { 58 | FileInputStream mavenWrapperPropertyFileInputStream = null; 59 | try { 60 | mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile); 61 | Properties mavenWrapperProperties = new Properties(); 62 | mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream); 63 | url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url); 64 | } catch (IOException e) { 65 | System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'"); 66 | } finally { 67 | try { 68 | if(mavenWrapperPropertyFileInputStream != null) { 69 | mavenWrapperPropertyFileInputStream.close(); 70 | } 71 | } catch (IOException e) { 72 | // Ignore ... 73 | } 74 | } 75 | } 76 | System.out.println("- Downloading from: " + url); 77 | 78 | File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH); 79 | if(!outputFile.getParentFile().exists()) { 80 | if(!outputFile.getParentFile().mkdirs()) { 81 | System.out.println( 82 | "- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'"); 83 | } 84 | } 85 | System.out.println("- Downloading to: " + outputFile.getAbsolutePath()); 86 | try { 87 | downloadFileFromURL(url, outputFile); 88 | System.out.println("Done"); 89 | System.exit(0); 90 | } catch (Throwable e) { 91 | System.out.println("- Error downloading"); 92 | e.printStackTrace(); 93 | System.exit(1); 94 | } 95 | } 96 | 97 | private static void downloadFileFromURL(String urlString, File destination) throws Exception { 98 | if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) { 99 | String username = System.getenv("MVNW_USERNAME"); 100 | char[] password = System.getenv("MVNW_PASSWORD").toCharArray(); 101 | Authenticator.setDefault(new Authenticator() { 102 | @Override 103 | protected PasswordAuthentication getPasswordAuthentication() { 104 | return new PasswordAuthentication(username, password); 105 | } 106 | }); 107 | } 108 | URL website = new URL(urlString); 109 | ReadableByteChannel rbc; 110 | rbc = Channels.newChannel(website.openStream()); 111 | FileOutputStream fos = new FileOutputStream(destination); 112 | fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE); 113 | fos.close(); 114 | rbc.close(); 115 | } 116 | 117 | } 118 | -------------------------------------------------------------------------------- /.mvn/wrapper/maven-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/bezkoder/spring-boot-one-to-many/3c80206313bcd6fbf48f671ee41cee1ba5513cf3/.mvn/wrapper/maven-wrapper.jar -------------------------------------------------------------------------------- /.mvn/wrapper/maven-wrapper.properties: -------------------------------------------------------------------------------- 1 | distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.3/apache-maven-3.8.3-bin.zip 2 | wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar 3 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Spring Boot One To Many example with Spring JPA, Hibernate 2 | Implement Spring JPA One-To-Many mapping with Hibernate in a Spring Boot CRUD example using @ManyToOne annotation 3 | 4 | - configure Spring Data, JPA, Hibernate to work with Database 5 | - define Data Models and Repository interfaces for JPA One-To-Many relationship 6 | - use Spring JPA to interact with Database for One-To-Many association 7 | - create Spring Rest Controller to process HTTP requests 8 | 9 | For more detail, please visit: 10 | > [Spring Boot One To Many example with Spring JPA, Hibernate](https://www.bezkoder.com/jpa-one-to-many/) 11 | 12 | More Practice: 13 | > [Spring Boot Many To Many example with Spring JPA, Hibernate](https://www.bezkoder.com/jpa-many-to-many/) 14 | 15 | > [Spring Boot One To One example with Spring JPA, Hibernate](https://www.bezkoder.com/jpa-one-to-one/) 16 | 17 | > [Spring Boot CRUD Rest API example](https://www.bezkoder.com/spring-boot-jpa-crud-rest-api/) 18 | 19 | > [Spring Boot File upload example with Multipart File](https://www.bezkoder.com/spring-boot-file-upload/) 20 | 21 | > [Spring Boot Pagination & Filter example | Spring JPA, Pageable](https://www.bezkoder.com/spring-boot-pagination-filter-jpa-pageable/) 22 | 23 | > [Spring Data JPA Sort/Order by multiple Columns | Spring Boot](https://www.bezkoder.com/spring-data-sort-multiple-columns/) 24 | 25 | > [Spring Boot Repository Unit Test with @DataJpaTest](https://www.bezkoder.com/spring-boot-unit-test-jpa-repo-datajpatest/) 26 | 27 | Security: 28 | > [Spring Boot + Spring Security JWT Authentication & Authorization](https://www.bezkoder.com/spring-boot-jwt-authentication/) 29 | 30 | Deployment: 31 | > [Deploy Spring Boot App on AWS – Elastic Beanstalk](https://bezkoder.com/deploy-spring-boot-aws-eb/) 32 | 33 | > [Docker Compose Spring Boot and MySQL example](https://www.bezkoder.com/docker-compose-spring-boot-mysql/) 34 | 35 | Fullstack: 36 | > [Vue + Spring Boot + H2 Embedded database example](https://www.bezkoder.com/spring-boot-vue-js-crud-example/) 37 | 38 | > [Vue + Spring Boot + MySQL example](https://www.bezkoder.com/spring-boot-vue-js-mysql/) 39 | 40 | > [Vue + Spring Boot + PostgreSQL example](https://www.bezkoder.com/spring-boot-vue-js-postgresql/) 41 | 42 | > [Angular 8 + Spring Boot + Embedded database example](https://www.bezkoder.com/angular-spring-boot-crud/) 43 | 44 | > [Angular 8 + Spring Boot + MySQL example](https://www.bezkoder.com/angular-spring-boot-crud/) 45 | 46 | > [Angular 8 + Spring Boot + PostgreSQL example](https://www.bezkoder.com/angular-spring-boot-postgresql/) 47 | 48 | > [Angular 10 + Spring Boot + MySQL example](https://www.bezkoder.com/angular-10-spring-boot-crud/) 49 | 50 | > [Angular 10 + Spring Boot + PostgreSQL example](https://www.bezkoder.com/angular-10-spring-boot-postgresql/) 51 | 52 | > [Angular 11 + Spring Boot + MySQL example](https://www.bezkoder.com/angular-11-spring-boot-crud/) 53 | 54 | > [Angular 11 + Spring Boot + PostgreSQL example](https://www.bezkoder.com/angular-11-spring-boot-postgresql/) 55 | 56 | > [Angular 12 + Spring Boot + Embedded database example](https://www.bezkoder.com/angular-12-spring-boot-crud/) 57 | 58 | > [Angular 12 + Spring Boot + MySQL example](https://www.bezkoder.com/angular-12-spring-boot-mysql/) 59 | 60 | > [Angular 12 + Spring Boot + PostgreSQL example](https://www.bezkoder.com/angular-12-spring-boot-postgresql/) 61 | 62 | > [Angular 13 + Spring Boot + H2 Embedded Database example](https://www.bezkoder.com/spring-boot-angular-13-crud/) 63 | 64 | > [Angular 13 + Spring Boot + MySQL example](https://www.bezkoder.com/spring-boot-angular-13-mysql/) 65 | 66 | > [Angular 13 + Spring Boot + PostgreSQL example](https://www.bezkoder.com/spring-boot-angular-13-postgresql/) 67 | 68 | > [Angular 14 + Spring Boot + H2 Embedded Database example](https://www.bezkoder.com/spring-boot-angular-14-crud/) 69 | 70 | > [Angular 14 + Spring Boot + MySQL example](https://www.bezkoder.com/spring-boot-angular-14-mysql/) 71 | 72 | > [Angular 14 + Spring Boot + PostgreSQL example](https://www.bezkoder.com/spring-boot-angular-14-postgresql/) 73 | 74 | > [Angular 15 + Spring Boot + H2 Embedded Database example](https://www.bezkoder.com/spring-boot-angular-15-crud/) 75 | 76 | > [Angular 15 + Spring Boot + MySQL example](https://www.bezkoder.com/spring-boot-angular-15-mysql/) 77 | 78 | > [Angular 15 + Spring Boot + PostgreSQL example](https://www.bezkoder.com/spring-boot-angular-15-postgresql/) 79 | 80 | > [Angular 16 + Spring Boot + H2 Embedded Database example](https://www.bezkoder.com/spring-boot-angular-16-crud/) 81 | 82 | > [Angular 16 + Spring Boot + MySQL example](https://www.bezkoder.com/spring-boot-angular-16-mysql/) 83 | 84 | > [Angular 16 + Spring Boot + PostgreSQL example](https://www.bezkoder.com/spring-boot-angular-16-postgresql/) 85 | 86 | > [React Redux + Spring Boot example](https://www.bezkoder.com/spring-boot-react-redux-example/) 87 | 88 | > [React + Spring Boot + MySQL example](https://www.bezkoder.com/react-spring-boot-crud/) 89 | 90 | > [React + Spring Boot + PostgreSQL example](https://www.bezkoder.com/spring-boot-react-postgresql/) 91 | 92 | Run both Back-end & Front-end in one place: 93 | > [Integrate Angular with Spring Boot Rest API](https://www.bezkoder.com/integrate-angular-spring-boot/) 94 | 95 | > [Integrate React with Spring Boot Rest API](https://www.bezkoder.com/integrate-reactjs-spring-boot/) 96 | 97 | > [Integrate Vue with Spring Boot Rest API](https://www.bezkoder.com/integrate-vue-spring-boot/) 98 | 99 | ## Run Spring Boot application 100 | ``` 101 | mvn spring-boot:run 102 | ``` 103 | 104 | -------------------------------------------------------------------------------- /mvnw: -------------------------------------------------------------------------------- 1 | #!/bin/sh 2 | # ---------------------------------------------------------------------------- 3 | # Licensed to the Apache Software Foundation (ASF) under one 4 | # or more contributor license agreements. See the NOTICE file 5 | # distributed with this work for additional information 6 | # regarding copyright ownership. The ASF licenses this file 7 | # to you under the Apache License, Version 2.0 (the 8 | # "License"); you may not use this file except in compliance 9 | # with the License. You may obtain a copy of the License at 10 | # 11 | # https://www.apache.org/licenses/LICENSE-2.0 12 | # 13 | # Unless required by applicable law or agreed to in writing, 14 | # software distributed under the License is distributed on an 15 | # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 | # KIND, either express or implied. See the License for the 17 | # specific language governing permissions and limitations 18 | # under the License. 19 | # ---------------------------------------------------------------------------- 20 | 21 | # ---------------------------------------------------------------------------- 22 | # Maven Start Up Batch script 23 | # 24 | # Required ENV vars: 25 | # ------------------ 26 | # JAVA_HOME - location of a JDK home dir 27 | # 28 | # Optional ENV vars 29 | # ----------------- 30 | # M2_HOME - location of maven2's installed home dir 31 | # MAVEN_OPTS - parameters passed to the Java VM when running Maven 32 | # e.g. to debug Maven itself, use 33 | # set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 34 | # MAVEN_SKIP_RC - flag to disable loading of mavenrc files 35 | # ---------------------------------------------------------------------------- 36 | 37 | if [ -z "$MAVEN_SKIP_RC" ] ; then 38 | 39 | if [ -f /etc/mavenrc ] ; then 40 | . /etc/mavenrc 41 | fi 42 | 43 | if [ -f "$HOME/.mavenrc" ] ; then 44 | . "$HOME/.mavenrc" 45 | fi 46 | 47 | fi 48 | 49 | # OS specific support. $var _must_ be set to either true or false. 50 | cygwin=false; 51 | darwin=false; 52 | mingw=false 53 | case "`uname`" in 54 | CYGWIN*) cygwin=true ;; 55 | MINGW*) mingw=true;; 56 | Darwin*) darwin=true 57 | # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home 58 | # See https://developer.apple.com/library/mac/qa/qa1170/_index.html 59 | if [ -z "$JAVA_HOME" ]; then 60 | if [ -x "/usr/libexec/java_home" ]; then 61 | export JAVA_HOME="`/usr/libexec/java_home`" 62 | else 63 | export JAVA_HOME="/Library/Java/Home" 64 | fi 65 | fi 66 | ;; 67 | esac 68 | 69 | if [ -z "$JAVA_HOME" ] ; then 70 | if [ -r /etc/gentoo-release ] ; then 71 | JAVA_HOME=`java-config --jre-home` 72 | fi 73 | fi 74 | 75 | if [ -z "$M2_HOME" ] ; then 76 | ## resolve links - $0 may be a link to maven's home 77 | PRG="$0" 78 | 79 | # need this for relative symlinks 80 | while [ -h "$PRG" ] ; do 81 | ls=`ls -ld "$PRG"` 82 | link=`expr "$ls" : '.*-> \(.*\)$'` 83 | if expr "$link" : '/.*' > /dev/null; then 84 | PRG="$link" 85 | else 86 | PRG="`dirname "$PRG"`/$link" 87 | fi 88 | done 89 | 90 | saveddir=`pwd` 91 | 92 | M2_HOME=`dirname "$PRG"`/.. 93 | 94 | # make it fully qualified 95 | M2_HOME=`cd "$M2_HOME" && pwd` 96 | 97 | cd "$saveddir" 98 | # echo Using m2 at $M2_HOME 99 | fi 100 | 101 | # For Cygwin, ensure paths are in UNIX format before anything is touched 102 | if $cygwin ; then 103 | [ -n "$M2_HOME" ] && 104 | M2_HOME=`cygpath --unix "$M2_HOME"` 105 | [ -n "$JAVA_HOME" ] && 106 | JAVA_HOME=`cygpath --unix "$JAVA_HOME"` 107 | [ -n "$CLASSPATH" ] && 108 | CLASSPATH=`cygpath --path --unix "$CLASSPATH"` 109 | fi 110 | 111 | # For Mingw, ensure paths are in UNIX format before anything is touched 112 | if $mingw ; then 113 | [ -n "$M2_HOME" ] && 114 | M2_HOME="`(cd "$M2_HOME"; pwd)`" 115 | [ -n "$JAVA_HOME" ] && 116 | JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`" 117 | fi 118 | 119 | if [ -z "$JAVA_HOME" ]; then 120 | javaExecutable="`which javac`" 121 | if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then 122 | # readlink(1) is not available as standard on Solaris 10. 123 | readLink=`which readlink` 124 | if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then 125 | if $darwin ; then 126 | javaHome="`dirname \"$javaExecutable\"`" 127 | javaExecutable="`cd \"$javaHome\" && pwd -P`/javac" 128 | else 129 | javaExecutable="`readlink -f \"$javaExecutable\"`" 130 | fi 131 | javaHome="`dirname \"$javaExecutable\"`" 132 | javaHome=`expr "$javaHome" : '\(.*\)/bin'` 133 | JAVA_HOME="$javaHome" 134 | export JAVA_HOME 135 | fi 136 | fi 137 | fi 138 | 139 | if [ -z "$JAVACMD" ] ; then 140 | if [ -n "$JAVA_HOME" ] ; then 141 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 142 | # IBM's JDK on AIX uses strange locations for the executables 143 | JAVACMD="$JAVA_HOME/jre/sh/java" 144 | else 145 | JAVACMD="$JAVA_HOME/bin/java" 146 | fi 147 | else 148 | JAVACMD="`which java`" 149 | fi 150 | fi 151 | 152 | if [ ! -x "$JAVACMD" ] ; then 153 | echo "Error: JAVA_HOME is not defined correctly." >&2 154 | echo " We cannot execute $JAVACMD" >&2 155 | exit 1 156 | fi 157 | 158 | if [ -z "$JAVA_HOME" ] ; then 159 | echo "Warning: JAVA_HOME environment variable is not set." 160 | fi 161 | 162 | CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher 163 | 164 | # traverses directory structure from process work directory to filesystem root 165 | # first directory with .mvn subdirectory is considered project base directory 166 | find_maven_basedir() { 167 | 168 | if [ -z "$1" ] 169 | then 170 | echo "Path not specified to find_maven_basedir" 171 | return 1 172 | fi 173 | 174 | basedir="$1" 175 | wdir="$1" 176 | while [ "$wdir" != '/' ] ; do 177 | if [ -d "$wdir"/.mvn ] ; then 178 | basedir=$wdir 179 | break 180 | fi 181 | # workaround for JBEAP-8937 (on Solaris 10/Sparc) 182 | if [ -d "${wdir}" ]; then 183 | wdir=`cd "$wdir/.."; pwd` 184 | fi 185 | # end of workaround 186 | done 187 | echo "${basedir}" 188 | } 189 | 190 | # concatenates all lines of a file 191 | concat_lines() { 192 | if [ -f "$1" ]; then 193 | echo "$(tr -s '\n' ' ' < "$1")" 194 | fi 195 | } 196 | 197 | BASE_DIR=`find_maven_basedir "$(pwd)"` 198 | if [ -z "$BASE_DIR" ]; then 199 | exit 1; 200 | fi 201 | 202 | ########################################################################################## 203 | # Extension to allow automatically downloading the maven-wrapper.jar from Maven-central 204 | # This allows using the maven wrapper in projects that prohibit checking in binary data. 205 | ########################################################################################## 206 | if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then 207 | if [ "$MVNW_VERBOSE" = true ]; then 208 | echo "Found .mvn/wrapper/maven-wrapper.jar" 209 | fi 210 | else 211 | if [ "$MVNW_VERBOSE" = true ]; then 212 | echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..." 213 | fi 214 | if [ -n "$MVNW_REPOURL" ]; then 215 | jarUrl="$MVNW_REPOURL/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar" 216 | else 217 | jarUrl="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar" 218 | fi 219 | while IFS="=" read key value; do 220 | case "$key" in (wrapperUrl) jarUrl="$value"; break ;; 221 | esac 222 | done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties" 223 | if [ "$MVNW_VERBOSE" = true ]; then 224 | echo "Downloading from: $jarUrl" 225 | fi 226 | wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" 227 | if $cygwin; then 228 | wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"` 229 | fi 230 | 231 | if command -v wget > /dev/null; then 232 | if [ "$MVNW_VERBOSE" = true ]; then 233 | echo "Found wget ... using wget" 234 | fi 235 | if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then 236 | wget "$jarUrl" -O "$wrapperJarPath" 237 | else 238 | wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath" 239 | fi 240 | elif command -v curl > /dev/null; then 241 | if [ "$MVNW_VERBOSE" = true ]; then 242 | echo "Found curl ... using curl" 243 | fi 244 | if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then 245 | curl -o "$wrapperJarPath" "$jarUrl" -f 246 | else 247 | curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f 248 | fi 249 | 250 | else 251 | if [ "$MVNW_VERBOSE" = true ]; then 252 | echo "Falling back to using Java to download" 253 | fi 254 | javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java" 255 | # For Cygwin, switch paths to Windows format before running javac 256 | if $cygwin; then 257 | javaClass=`cygpath --path --windows "$javaClass"` 258 | fi 259 | if [ -e "$javaClass" ]; then 260 | if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then 261 | if [ "$MVNW_VERBOSE" = true ]; then 262 | echo " - Compiling MavenWrapperDownloader.java ..." 263 | fi 264 | # Compiling the Java class 265 | ("$JAVA_HOME/bin/javac" "$javaClass") 266 | fi 267 | if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then 268 | # Running the downloader 269 | if [ "$MVNW_VERBOSE" = true ]; then 270 | echo " - Running MavenWrapperDownloader.java ..." 271 | fi 272 | ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR") 273 | fi 274 | fi 275 | fi 276 | fi 277 | ########################################################################################## 278 | # End of extension 279 | ########################################################################################## 280 | 281 | export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"} 282 | if [ "$MVNW_VERBOSE" = true ]; then 283 | echo $MAVEN_PROJECTBASEDIR 284 | fi 285 | MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS" 286 | 287 | # For Cygwin, switch paths to Windows format before running java 288 | if $cygwin; then 289 | [ -n "$M2_HOME" ] && 290 | M2_HOME=`cygpath --path --windows "$M2_HOME"` 291 | [ -n "$JAVA_HOME" ] && 292 | JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"` 293 | [ -n "$CLASSPATH" ] && 294 | CLASSPATH=`cygpath --path --windows "$CLASSPATH"` 295 | [ -n "$MAVEN_PROJECTBASEDIR" ] && 296 | MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"` 297 | fi 298 | 299 | # Provide a "standardized" way to retrieve the CLI args that will 300 | # work with both Windows and non-Windows executions. 301 | MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@" 302 | export MAVEN_CMD_LINE_ARGS 303 | 304 | WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain 305 | 306 | exec "$JAVACMD" \ 307 | $MAVEN_OPTS \ 308 | -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \ 309 | "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \ 310 | ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@" 311 | -------------------------------------------------------------------------------- /mvnw.cmd: -------------------------------------------------------------------------------- 1 | @REM ---------------------------------------------------------------------------- 2 | @REM Licensed to the Apache Software Foundation (ASF) under one 3 | @REM or more contributor license agreements. See the NOTICE file 4 | @REM distributed with this work for additional information 5 | @REM regarding copyright ownership. The ASF licenses this file 6 | @REM to you under the Apache License, Version 2.0 (the 7 | @REM "License"); you may not use this file except in compliance 8 | @REM with the License. You may obtain a copy of the License at 9 | @REM 10 | @REM https://www.apache.org/licenses/LICENSE-2.0 11 | @REM 12 | @REM Unless required by applicable law or agreed to in writing, 13 | @REM software distributed under the License is distributed on an 14 | @REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 | @REM KIND, either express or implied. See the License for the 16 | @REM specific language governing permissions and limitations 17 | @REM under the License. 18 | @REM ---------------------------------------------------------------------------- 19 | 20 | @REM ---------------------------------------------------------------------------- 21 | @REM Maven Start Up Batch script 22 | @REM 23 | @REM Required ENV vars: 24 | @REM JAVA_HOME - location of a JDK home dir 25 | @REM 26 | @REM Optional ENV vars 27 | @REM M2_HOME - location of maven2's installed home dir 28 | @REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands 29 | @REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending 30 | @REM MAVEN_OPTS - parameters passed to the Java VM when running Maven 31 | @REM e.g. to debug Maven itself, use 32 | @REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 33 | @REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files 34 | @REM ---------------------------------------------------------------------------- 35 | 36 | @REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on' 37 | @echo off 38 | @REM set title of command window 39 | title %0 40 | @REM enable echoing by setting MAVEN_BATCH_ECHO to 'on' 41 | @if "%MAVEN_BATCH_ECHO%" == "on" echo %MAVEN_BATCH_ECHO% 42 | 43 | @REM set %HOME% to equivalent of $HOME 44 | if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%") 45 | 46 | @REM Execute a user defined script before this one 47 | if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre 48 | @REM check for pre script, once with legacy .bat ending and once with .cmd ending 49 | if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat" 50 | if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd" 51 | :skipRcPre 52 | 53 | @setlocal 54 | 55 | set ERROR_CODE=0 56 | 57 | @REM To isolate internal variables from possible post scripts, we use another setlocal 58 | @setlocal 59 | 60 | @REM ==== START VALIDATION ==== 61 | if not "%JAVA_HOME%" == "" goto OkJHome 62 | 63 | echo. 64 | echo Error: JAVA_HOME not found in your environment. >&2 65 | echo Please set the JAVA_HOME variable in your environment to match the >&2 66 | echo location of your Java installation. >&2 67 | echo. 68 | goto error 69 | 70 | :OkJHome 71 | if exist "%JAVA_HOME%\bin\java.exe" goto init 72 | 73 | echo. 74 | echo Error: JAVA_HOME is set to an invalid directory. >&2 75 | echo JAVA_HOME = "%JAVA_HOME%" >&2 76 | echo Please set the JAVA_HOME variable in your environment to match the >&2 77 | echo location of your Java installation. >&2 78 | echo. 79 | goto error 80 | 81 | @REM ==== END VALIDATION ==== 82 | 83 | :init 84 | 85 | @REM Find the project base dir, i.e. the directory that contains the folder ".mvn". 86 | @REM Fallback to current working directory if not found. 87 | 88 | set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR% 89 | IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir 90 | 91 | set EXEC_DIR=%CD% 92 | set WDIR=%EXEC_DIR% 93 | :findBaseDir 94 | IF EXIST "%WDIR%"\.mvn goto baseDirFound 95 | cd .. 96 | IF "%WDIR%"=="%CD%" goto baseDirNotFound 97 | set WDIR=%CD% 98 | goto findBaseDir 99 | 100 | :baseDirFound 101 | set MAVEN_PROJECTBASEDIR=%WDIR% 102 | cd "%EXEC_DIR%" 103 | goto endDetectBaseDir 104 | 105 | :baseDirNotFound 106 | set MAVEN_PROJECTBASEDIR=%EXEC_DIR% 107 | cd "%EXEC_DIR%" 108 | 109 | :endDetectBaseDir 110 | 111 | IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig 112 | 113 | @setlocal EnableExtensions EnableDelayedExpansion 114 | for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a 115 | @endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS% 116 | 117 | :endReadAdditionalConfig 118 | 119 | SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe" 120 | set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar" 121 | set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain 122 | 123 | set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar" 124 | 125 | FOR /F "tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO ( 126 | IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B 127 | ) 128 | 129 | @REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central 130 | @REM This allows using the maven wrapper in projects that prohibit checking in binary data. 131 | if exist %WRAPPER_JAR% ( 132 | if "%MVNW_VERBOSE%" == "true" ( 133 | echo Found %WRAPPER_JAR% 134 | ) 135 | ) else ( 136 | if not "%MVNW_REPOURL%" == "" ( 137 | SET DOWNLOAD_URL="%MVNW_REPOURL%/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar" 138 | ) 139 | if "%MVNW_VERBOSE%" == "true" ( 140 | echo Couldn't find %WRAPPER_JAR%, downloading it ... 141 | echo Downloading from: %DOWNLOAD_URL% 142 | ) 143 | 144 | powershell -Command "&{"^ 145 | "$webclient = new-object System.Net.WebClient;"^ 146 | "if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^ 147 | "$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^ 148 | "}"^ 149 | "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^ 150 | "}" 151 | if "%MVNW_VERBOSE%" == "true" ( 152 | echo Finished downloading %WRAPPER_JAR% 153 | ) 154 | ) 155 | @REM End of extension 156 | 157 | @REM Provide a "standardized" way to retrieve the CLI args that will 158 | @REM work with both Windows and non-Windows executions. 159 | set MAVEN_CMD_LINE_ARGS=%* 160 | 161 | %MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %* 162 | if ERRORLEVEL 1 goto error 163 | goto end 164 | 165 | :error 166 | set ERROR_CODE=1 167 | 168 | :end 169 | @endlocal & set ERROR_CODE=%ERROR_CODE% 170 | 171 | if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost 172 | @REM check for post script, once with legacy .bat ending and once with .cmd ending 173 | if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat" 174 | if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd" 175 | :skipRcPost 176 | 177 | @REM pause the script if MAVEN_BATCH_PAUSE is set to 'on' 178 | if "%MAVEN_BATCH_PAUSE%" == "on" pause 179 | 180 | if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE% 181 | 182 | exit /B %ERROR_CODE% 183 | -------------------------------------------------------------------------------- /pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 4.0.0 5 | 6 | org.springframework.boot 7 | spring-boot-starter-parent 8 | 3.1.0 9 | 10 | 11 | com.bezkoder 12 | spring-boot-one-to-many 13 | 0.0.1-SNAPSHOT 14 | spring-boot-one-to-many 15 | Spring Boot One to Many example using Hibernate / JPA @ManyToOne 16 | 17 | 17 18 | 19 | 20 | 21 | org.springframework.boot 22 | spring-boot-starter-data-jpa 23 | 24 | 25 | 26 | org.springframework.boot 27 | spring-boot-starter-web 28 | 29 | 30 | 31 | com.mysql 32 | mysql-connector-j 33 | runtime 34 | 35 | 36 | 37 | org.springframework.boot 38 | spring-boot-starter-test 39 | test 40 | 41 | 42 | 43 | 44 | 45 | 46 | org.springframework.boot 47 | spring-boot-maven-plugin 48 | 49 | 50 | 51 | 52 | 53 | -------------------------------------------------------------------------------- /src/main/java/com/bezkoder/spring/hibernate/onetomany/SpringBootOneToManyApplication.java: -------------------------------------------------------------------------------- 1 | package com.bezkoder.spring.hibernate.onetomany; 2 | 3 | import org.springframework.boot.SpringApplication; 4 | import org.springframework.boot.autoconfigure.SpringBootApplication; 5 | 6 | @SpringBootApplication 7 | public class SpringBootOneToManyApplication { 8 | 9 | public static void main(String[] args) { 10 | SpringApplication.run(SpringBootOneToManyApplication.class, args); 11 | } 12 | 13 | } 14 | -------------------------------------------------------------------------------- /src/main/java/com/bezkoder/spring/hibernate/onetomany/controller/CommentController.java: -------------------------------------------------------------------------------- 1 | package com.bezkoder.spring.hibernate.onetomany.controller; 2 | 3 | import java.util.List; 4 | 5 | import org.springframework.beans.factory.annotation.Autowired; 6 | import org.springframework.http.HttpStatus; 7 | import org.springframework.http.ResponseEntity; 8 | import org.springframework.web.bind.annotation.CrossOrigin; 9 | import org.springframework.web.bind.annotation.DeleteMapping; 10 | import org.springframework.web.bind.annotation.GetMapping; 11 | import org.springframework.web.bind.annotation.PathVariable; 12 | import org.springframework.web.bind.annotation.PostMapping; 13 | import org.springframework.web.bind.annotation.PutMapping; 14 | import org.springframework.web.bind.annotation.RequestBody; 15 | import org.springframework.web.bind.annotation.RequestMapping; 16 | import org.springframework.web.bind.annotation.RestController; 17 | 18 | import com.bezkoder.spring.hibernate.onetomany.exception.ResourceNotFoundException; 19 | import com.bezkoder.spring.hibernate.onetomany.model.Comment; 20 | import com.bezkoder.spring.hibernate.onetomany.repository.CommentRepository; 21 | import com.bezkoder.spring.hibernate.onetomany.repository.TutorialRepository; 22 | 23 | @CrossOrigin(origins = "http://localhost:8081") 24 | @RestController 25 | @RequestMapping("/api") 26 | public class CommentController { 27 | 28 | @Autowired 29 | private TutorialRepository tutorialRepository; 30 | 31 | @Autowired 32 | private CommentRepository commentRepository; 33 | 34 | @GetMapping("/tutorials/{tutorialId}/comments") 35 | public ResponseEntity> getAllCommentsByTutorialId(@PathVariable(value = "tutorialId") Long tutorialId) { 36 | if (!tutorialRepository.existsById(tutorialId)) { 37 | throw new ResourceNotFoundException("Not found Tutorial with id = " + tutorialId); 38 | } 39 | 40 | List comments = commentRepository.findByTutorialId(tutorialId); 41 | return new ResponseEntity<>(comments, HttpStatus.OK); 42 | } 43 | 44 | @GetMapping("/comments/{id}") 45 | public ResponseEntity getCommentsByTutorialId(@PathVariable(value = "id") Long id) { 46 | Comment comment = commentRepository.findById(id) 47 | .orElseThrow(() -> new ResourceNotFoundException("Not found Comment with id = " + id)); 48 | 49 | return new ResponseEntity<>(comment, HttpStatus.OK); 50 | } 51 | 52 | @PostMapping("/tutorials/{tutorialId}/comments") 53 | public ResponseEntity createComment(@PathVariable(value = "tutorialId") Long tutorialId, 54 | @RequestBody Comment commentRequest) { 55 | Comment comment = tutorialRepository.findById(tutorialId).map(tutorial -> { 56 | commentRequest.setTutorial(tutorial); 57 | return commentRepository.save(commentRequest); 58 | }).orElseThrow(() -> new ResourceNotFoundException("Not found Tutorial with id = " + tutorialId)); 59 | 60 | return new ResponseEntity<>(comment, HttpStatus.CREATED); 61 | } 62 | 63 | @PutMapping("/comments/{id}") 64 | public ResponseEntity updateComment(@PathVariable("id") long id, @RequestBody Comment commentRequest) { 65 | Comment comment = commentRepository.findById(id) 66 | .orElseThrow(() -> new ResourceNotFoundException("CommentId " + id + "not found")); 67 | 68 | comment.setContent(commentRequest.getContent()); 69 | 70 | return new ResponseEntity<>(commentRepository.save(comment), HttpStatus.OK); 71 | } 72 | 73 | @DeleteMapping("/comments/{id}") 74 | public ResponseEntity deleteComment(@PathVariable("id") long id) { 75 | commentRepository.deleteById(id); 76 | 77 | return new ResponseEntity<>(HttpStatus.NO_CONTENT); 78 | } 79 | 80 | @DeleteMapping("/tutorials/{tutorialId}/comments") 81 | public ResponseEntity> deleteAllCommentsOfTutorial(@PathVariable(value = "tutorialId") Long tutorialId) { 82 | if (!tutorialRepository.existsById(tutorialId)) { 83 | throw new ResourceNotFoundException("Not found Tutorial with id = " + tutorialId); 84 | } 85 | 86 | commentRepository.deleteByTutorialId(tutorialId); 87 | return new ResponseEntity<>(HttpStatus.NO_CONTENT); 88 | } 89 | } 90 | -------------------------------------------------------------------------------- /src/main/java/com/bezkoder/spring/hibernate/onetomany/controller/TutorialController.java: -------------------------------------------------------------------------------- 1 | package com.bezkoder.spring.hibernate.onetomany.controller; 2 | 3 | import java.util.ArrayList; 4 | import java.util.List; 5 | 6 | import org.springframework.beans.factory.annotation.Autowired; 7 | import org.springframework.http.HttpStatus; 8 | import org.springframework.http.ResponseEntity; 9 | import org.springframework.web.bind.annotation.CrossOrigin; 10 | import org.springframework.web.bind.annotation.DeleteMapping; 11 | import org.springframework.web.bind.annotation.GetMapping; 12 | import org.springframework.web.bind.annotation.PathVariable; 13 | import org.springframework.web.bind.annotation.PostMapping; 14 | import org.springframework.web.bind.annotation.PutMapping; 15 | import org.springframework.web.bind.annotation.RequestBody; 16 | import org.springframework.web.bind.annotation.RequestMapping; 17 | import org.springframework.web.bind.annotation.RequestParam; 18 | import org.springframework.web.bind.annotation.RestController; 19 | 20 | import com.bezkoder.spring.hibernate.onetomany.exception.ResourceNotFoundException; 21 | import com.bezkoder.spring.hibernate.onetomany.model.Tutorial; 22 | import com.bezkoder.spring.hibernate.onetomany.repository.TutorialRepository; 23 | 24 | @CrossOrigin(origins = "http://localhost:8081") 25 | @RestController 26 | @RequestMapping("/api") 27 | public class TutorialController { 28 | 29 | @Autowired 30 | TutorialRepository tutorialRepository; 31 | 32 | @GetMapping("/tutorials") 33 | public ResponseEntity> getAllTutorials(@RequestParam(required = false) String title) { 34 | List tutorials = new ArrayList(); 35 | 36 | if (title == null) 37 | tutorialRepository.findAll().forEach(tutorials::add); 38 | else 39 | tutorialRepository.findByTitleContaining(title).forEach(tutorials::add); 40 | 41 | if (tutorials.isEmpty()) { 42 | return new ResponseEntity<>(HttpStatus.NO_CONTENT); 43 | } 44 | 45 | return new ResponseEntity<>(tutorials, HttpStatus.OK); 46 | } 47 | 48 | @GetMapping("/tutorials/{id}") 49 | public ResponseEntity getTutorialById(@PathVariable("id") long id) { 50 | Tutorial tutorial = tutorialRepository.findById(id) 51 | .orElseThrow(() -> new ResourceNotFoundException("Not found Tutorial with id = " + id)); 52 | 53 | return new ResponseEntity<>(tutorial, HttpStatus.OK); 54 | } 55 | 56 | @PostMapping("/tutorials") 57 | public ResponseEntity createTutorial(@RequestBody Tutorial tutorial) { 58 | Tutorial _tutorial = tutorialRepository.save(new Tutorial(tutorial.getTitle(), tutorial.getDescription(), true)); 59 | return new ResponseEntity<>(_tutorial, HttpStatus.CREATED); 60 | } 61 | 62 | @PutMapping("/tutorials/{id}") 63 | public ResponseEntity updateTutorial(@PathVariable("id") long id, @RequestBody Tutorial tutorial) { 64 | Tutorial _tutorial = tutorialRepository.findById(id) 65 | .orElseThrow(() -> new ResourceNotFoundException("Not found Tutorial with id = " + id)); 66 | 67 | _tutorial.setTitle(tutorial.getTitle()); 68 | _tutorial.setDescription(tutorial.getDescription()); 69 | _tutorial.setPublished(tutorial.isPublished()); 70 | 71 | return new ResponseEntity<>(tutorialRepository.save(_tutorial), HttpStatus.OK); 72 | } 73 | 74 | @DeleteMapping("/tutorials/{id}") 75 | public ResponseEntity deleteTutorial(@PathVariable("id") long id) { 76 | tutorialRepository.deleteById(id); 77 | 78 | return new ResponseEntity<>(HttpStatus.NO_CONTENT); 79 | } 80 | 81 | @DeleteMapping("/tutorials") 82 | public ResponseEntity deleteAllTutorials() { 83 | tutorialRepository.deleteAll(); 84 | 85 | return new ResponseEntity<>(HttpStatus.NO_CONTENT); 86 | } 87 | 88 | @GetMapping("/tutorials/published") 89 | public ResponseEntity> findByPublished() { 90 | List tutorials = tutorialRepository.findByPublished(true); 91 | 92 | if (tutorials.isEmpty()) { 93 | return new ResponseEntity<>(HttpStatus.NO_CONTENT); 94 | } 95 | 96 | return new ResponseEntity<>(tutorials, HttpStatus.OK); 97 | } 98 | } 99 | -------------------------------------------------------------------------------- /src/main/java/com/bezkoder/spring/hibernate/onetomany/exception/ControllerExceptionHandler.java: -------------------------------------------------------------------------------- 1 | package com.bezkoder.spring.hibernate.onetomany.exception; 2 | 3 | import java.util.Date; 4 | 5 | import org.springframework.http.HttpStatus; 6 | import org.springframework.web.bind.annotation.ExceptionHandler; 7 | import org.springframework.web.bind.annotation.ResponseStatus; 8 | import org.springframework.web.bind.annotation.RestControllerAdvice; 9 | import org.springframework.web.context.request.WebRequest; 10 | 11 | @RestControllerAdvice 12 | public class ControllerExceptionHandler { 13 | 14 | @ExceptionHandler(ResourceNotFoundException.class) 15 | @ResponseStatus(value = HttpStatus.NOT_FOUND) 16 | public ErrorMessage resourceNotFoundException(ResourceNotFoundException ex, WebRequest request) { 17 | ErrorMessage message = new ErrorMessage( 18 | HttpStatus.NOT_FOUND.value(), 19 | new Date(), 20 | ex.getMessage(), 21 | request.getDescription(false)); 22 | 23 | return message; 24 | } 25 | 26 | @ExceptionHandler(Exception.class) 27 | @ResponseStatus(value = HttpStatus.INTERNAL_SERVER_ERROR) 28 | public ErrorMessage globalExceptionHandler(Exception ex, WebRequest request) { 29 | ErrorMessage message = new ErrorMessage( 30 | HttpStatus.INTERNAL_SERVER_ERROR.value(), 31 | new Date(), 32 | ex.getMessage(), 33 | request.getDescription(false)); 34 | 35 | return message; 36 | } 37 | } -------------------------------------------------------------------------------- /src/main/java/com/bezkoder/spring/hibernate/onetomany/exception/ErrorMessage.java: -------------------------------------------------------------------------------- 1 | package com.bezkoder.spring.hibernate.onetomany.exception; 2 | 3 | import java.util.Date; 4 | 5 | public class ErrorMessage { 6 | private int statusCode; 7 | private Date timestamp; 8 | private String message; 9 | private String description; 10 | 11 | public ErrorMessage(int statusCode, Date timestamp, String message, String description) { 12 | this.statusCode = statusCode; 13 | this.timestamp = timestamp; 14 | this.message = message; 15 | this.description = description; 16 | } 17 | 18 | public int getStatusCode() { 19 | return statusCode; 20 | } 21 | 22 | public Date getTimestamp() { 23 | return timestamp; 24 | } 25 | 26 | public String getMessage() { 27 | return message; 28 | } 29 | 30 | public String getDescription() { 31 | return description; 32 | } 33 | } -------------------------------------------------------------------------------- /src/main/java/com/bezkoder/spring/hibernate/onetomany/exception/ResourceNotFoundException.java: -------------------------------------------------------------------------------- 1 | package com.bezkoder.spring.hibernate.onetomany.exception; 2 | 3 | public class ResourceNotFoundException extends RuntimeException { 4 | 5 | private static final long serialVersionUID = 1L; 6 | 7 | public ResourceNotFoundException(String msg) { 8 | super(msg); 9 | } 10 | } -------------------------------------------------------------------------------- /src/main/java/com/bezkoder/spring/hibernate/onetomany/model/Comment.java: -------------------------------------------------------------------------------- 1 | package com.bezkoder.spring.hibernate.onetomany.model; 2 | 3 | import jakarta.persistence.*; 4 | 5 | import org.hibernate.annotations.OnDelete; 6 | import org.hibernate.annotations.OnDeleteAction; 7 | 8 | import com.fasterxml.jackson.annotation.JsonIgnore; 9 | 10 | @Entity 11 | @Table(name = "comments") 12 | public class Comment { 13 | @Id 14 | @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "comment_generator") 15 | private Long id; 16 | 17 | @Lob 18 | private String content; 19 | 20 | // @ManyToOne(fetch = FetchType.EAGER, optional = false) 21 | @ManyToOne(fetch = FetchType.LAZY, optional = false) 22 | @JoinColumn(name = "tutorial_id", nullable = false) 23 | @OnDelete(action = OnDeleteAction.CASCADE) 24 | @JsonIgnore 25 | private Tutorial tutorial; 26 | 27 | public Long getId() { 28 | return id; 29 | } 30 | 31 | public String getContent() { 32 | return content; 33 | } 34 | 35 | public void setContent(String content) { 36 | this.content = content; 37 | } 38 | 39 | public Tutorial getTutorial() { 40 | return tutorial; 41 | } 42 | 43 | public void setTutorial(Tutorial tutorial) { 44 | this.tutorial = tutorial; 45 | } 46 | 47 | } 48 | -------------------------------------------------------------------------------- /src/main/java/com/bezkoder/spring/hibernate/onetomany/model/Tutorial.java: -------------------------------------------------------------------------------- 1 | package com.bezkoder.spring.hibernate.onetomany.model; 2 | 3 | import jakarta.persistence.*; 4 | 5 | @Entity 6 | @Table(name = "tutorials") 7 | public class Tutorial { 8 | 9 | @Id 10 | @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "tutorial_generator") 11 | private long id; 12 | 13 | @Column(name = "title") 14 | private String title; 15 | 16 | @Column(name = "description") 17 | private String description; 18 | 19 | @Column(name = "published") 20 | private boolean published; 21 | 22 | public Tutorial() { 23 | 24 | } 25 | 26 | public Tutorial(String title, String description, boolean published) { 27 | this.title = title; 28 | this.description = description; 29 | this.published = published; 30 | } 31 | 32 | public long getId() { 33 | return id; 34 | } 35 | 36 | public String getTitle() { 37 | return title; 38 | } 39 | 40 | public void setTitle(String title) { 41 | this.title = title; 42 | } 43 | 44 | public String getDescription() { 45 | return description; 46 | } 47 | 48 | public void setDescription(String description) { 49 | this.description = description; 50 | } 51 | 52 | public boolean isPublished() { 53 | return published; 54 | } 55 | 56 | public void setPublished(boolean isPublished) { 57 | this.published = isPublished; 58 | } 59 | 60 | @Override 61 | public String toString() { 62 | return "Tutorial [id=" + id + ", title=" + title + ", desc=" + description + ", published=" + published + "]"; 63 | } 64 | 65 | } 66 | -------------------------------------------------------------------------------- /src/main/java/com/bezkoder/spring/hibernate/onetomany/repository/CommentRepository.java: -------------------------------------------------------------------------------- 1 | package com.bezkoder.spring.hibernate.onetomany.repository; 2 | 3 | import java.util.List; 4 | 5 | import jakarta.transaction.Transactional; 6 | 7 | import org.springframework.data.jpa.repository.JpaRepository; 8 | 9 | import com.bezkoder.spring.hibernate.onetomany.model.Comment; 10 | 11 | public interface CommentRepository extends JpaRepository { 12 | List findByTutorialId(Long postId); 13 | 14 | @Transactional 15 | void deleteByTutorialId(long tutorialId); 16 | } 17 | -------------------------------------------------------------------------------- /src/main/java/com/bezkoder/spring/hibernate/onetomany/repository/TutorialRepository.java: -------------------------------------------------------------------------------- 1 | package com.bezkoder.spring.hibernate.onetomany.repository; 2 | 3 | import java.util.List; 4 | 5 | import org.springframework.data.jpa.repository.JpaRepository; 6 | 7 | import com.bezkoder.spring.hibernate.onetomany.model.Tutorial; 8 | 9 | public interface TutorialRepository extends JpaRepository { 10 | List findByPublished(boolean published); 11 | 12 | List findByTitleContaining(String title); 13 | } 14 | -------------------------------------------------------------------------------- /src/main/resources/application.properties: -------------------------------------------------------------------------------- 1 | 2 | spring.datasource.url=jdbc:mysql://localhost:3306/testdb?useSSL=false 3 | spring.datasource.username=root 4 | spring.datasource.password=123456 5 | 6 | spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQLDialect 7 | spring.jpa.hibernate.ddl-auto=update -------------------------------------------------------------------------------- /src/test/java/com/bezkoder/spring/hibernate/onetomany/SpringBootOneToManyApplicationTests.java: -------------------------------------------------------------------------------- 1 | package com.bezkoder.spring.hibernate.onetomany; 2 | 3 | import org.junit.jupiter.api.Test; 4 | import org.springframework.boot.test.context.SpringBootTest; 5 | 6 | @SpringBootTest 7 | class SpringBootOneToManyApplicationTests { 8 | 9 | @Test 10 | void contextLoads() { 11 | } 12 | 13 | } 14 | --------------------------------------------------------------------------------