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Merge pull request #37 from sjaakd/mapstruct-jpa
mapstruct-jpa
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‎README.md‎

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* _mapstruct-spi-accessor-naming_: Example on how to use the Service Provider Interface (SPI) for a custom accessor naming strategy.
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* _mapstruct-protobuf3_: Example on how to use protobuf3 with MapStruct
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* _mapstruct-kotlin_: Example on how to use MapStruct with Kotlin using KAPT (Kotlin Annotation Processing Tool)
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* _mapstruct-jpa-parent-child_: Example on how to use @Context in relation to parent / child relations in JPA)
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## License
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‎mapstruct-jpa-child-parent/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<!--
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Copyright 2012-2017 Gunnar Morling (http://www.gunnarmorling.de/)
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and/or other contributors as indicated by the @authors tag. See the
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copyright.txt file in the distribution for a full listing of all
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contributors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>org.mapstruct.examples.iterable</groupId>
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<artifactId>mapstruct-jpa-parent-child</artifactId>
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<version>1.0-SNAPSHOT</version>
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<properties>
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<org.mapstruct.version>1.2.0.Final</org.mapstruct.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>javax.persistence</groupId>
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<artifactId>persistence-api</artifactId>
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<version>1.0</version>
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</dependency>
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<dependency>
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<groupId>org.mapstruct</groupId>
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<artifactId>mapstruct</artifactId>
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<version>${org.mapstruct.version}</version>
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</dependency>
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<dependency>
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<groupId>org.mapstruct</groupId>
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<artifactId>mapstruct-processor</artifactId>
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<version>${org.mapstruct.version}</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.12</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.assertj</groupId>
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<artifactId>assertj-core</artifactId>
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<version>3.9.0</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.6.2</version>
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<configuration>
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<source>1.7</source>
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<target>1.7</target>
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<annotationProcessorPaths>
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<path>
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<groupId>org.mapstruct</groupId>
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<artifactId>mapstruct-processor</artifactId>
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<version>${org.mapstruct.version}</version>
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</path>
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</annotationProcessorPaths>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>

‎mapstruct-jpa-child-parent/src/main/java/org/mapstruct/jpa/ChildDto.java‎

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/**
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* Copyright 2012-2017 Gunnar Morling (http://www.gunnarmorling.de/)
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* and/or other contributors as indicated by the @authors tag. See the
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* copyright.txt file in the distribution for a full listing of all
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* contributors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.mapstruct.jpa;
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/**
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*
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* @author Sjaak Derksen
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*/
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public class ChildDto {
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private String name;
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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}

‎mapstruct-jpa-child-parent/src/main/java/org/mapstruct/jpa/ChildEntity.java‎

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/**
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* Copyright 2012-2017 Gunnar Morling (http://www.gunnarmorling.de/)
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* and/or other contributors as indicated by the @authors tag. See the
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* copyright.txt file in the distribution for a full listing of all
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* contributors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.mapstruct.jpa;
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/**
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*
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* @author Sjaak Derksen
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*/
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public class ChildEntity {
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private String name;
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private ParentEntity myParent;
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public ParentEntity getMyParent() {
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return myParent;
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}
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public void setMyParent(ParentEntity myParent) {
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this.myParent = myParent;
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}
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}

‎mapstruct-jpa-child-parent/src/main/java/org/mapstruct/jpa/JpaContext.java‎

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/**
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* Copyright 2012-2017 Gunnar Morling (http://www.gunnarmorling.de/)
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* and/or other contributors as indicated by the @authors tag. See the
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* copyright.txt file in the distribution for a full listing of all
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* contributors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.mapstruct.jpa;
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import javax.persistence.EntityManager;
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import org.mapstruct.AfterMapping;
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import org.mapstruct.BeforeMapping;
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import org.mapstruct.MappingTarget;
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/**
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*
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* @author Sjaak Derksen
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*/
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public class JpaContext {
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private final EntityManager em;
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private ParentEntity parentEntity;
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public JpaContext(EntityManager em) {
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this.em = em;
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}
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@BeforeMapping
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public void setEntity(@MappingTarget ParentEntity parentEntity) {
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this.parentEntity = parentEntity;
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// you could do stuff with the EntityManager here
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}
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@AfterMapping
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public void establishRelation(@MappingTarget ChildEntity childEntity) {
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childEntity.setMyParent( parentEntity );
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// you could do stuff with the EntityManager here
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}
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}

‎mapstruct-jpa-child-parent/src/main/java/org/mapstruct/jpa/ParentDto.java‎

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/**
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* Copyright 2012-2017 Gunnar Morling (http://www.gunnarmorling.de/)
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* and/or other contributors as indicated by the @authors tag. See the
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* copyright.txt file in the distribution for a full listing of all
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* contributors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.mapstruct.jpa;
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import java.util.List;
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/**
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*
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* @author Sjaak Derksen
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*/
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public class ParentDto {
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private String name;
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private List<ChildDto> children;
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public List<ChildDto> getChildren() {
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return children;
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}
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public void setChildren(List<ChildDto> children) {
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this.children = children;
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}
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}

‎mapstruct-jpa-child-parent/src/main/java/org/mapstruct/jpa/ParentEntity.java‎

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/**
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* Copyright 2012-2017 Gunnar Morling (http://www.gunnarmorling.de/)
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* and/or other contributors as indicated by the @authors tag. See the
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* copyright.txt file in the distribution for a full listing of all
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* contributors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.mapstruct.jpa;
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import java.util.List;
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/**
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*
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* @author Sjaak Derksen
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*/
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public class ParentEntity {
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private String name;
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private List<ChildEntity> children;
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public List<ChildEntity> getChildren() {
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return children;
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}
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public void setChildren(List<ChildEntity> children) {
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this.children = children;
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}
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}

‎mapstruct-jpa-child-parent/src/main/java/org/mapstruct/jpa/SourceTargetMapper.java‎

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/**
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* Copyright 2012-2017 Gunnar Morling (http://www.gunnarmorling.de/)
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* and/or other contributors as indicated by the @authors tag. See the
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* copyright.txt file in the distribution for a full listing of all
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* contributors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.mapstruct.jpa;
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import org.mapstruct.Context;
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import org.mapstruct.Mapper;
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import org.mapstruct.Mapping;
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import org.mapstruct.factory.Mappers;
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@Mapper
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public interface SourceTargetMapper {
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SourceTargetMapper MAPPER = Mappers.getMapper( SourceTargetMapper.class );
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ParentEntity toEntity(ParentDto s, @Context JpaContext ctx);
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@Mapping(target = "myParent", ignore = true)
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ChildEntity toEntity(ChildDto s, @Context JpaContext ctx);
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}

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