From 6ac9c01d3d996ec716e4386b945815acdcbe3b4c Mon Sep 17 00:00:00 2001 From: Philippe Date: Mon, 8 Apr 2019 10:23:31 -0300 Subject: [PATCH] Initial import --- .../olingo2/CarsODataJPAServiceFactory.java | 39 +-- .../examples/olingo2/EntityManagerHolder.java | 18 -- .../examples/olingo2/JerseyConfig.java | 40 +-- .../src/main/resources/application.yml | 4 +- apache-olingo/olingo4/.gitignore | 29 +++ apache-olingo/olingo4/pom.xml | 95 +++++++ .../examples/olingo4/DefaultODataFactory.java | 20 ++ .../examples/olingo4/ODataFactory.java | 8 + .../olingo4/ODataHttpHandlerFactory.java | 8 + .../olingo4/ODataHttpHandlerFactoryImpl.java | 42 ++++ .../olingo4/ODataServiceConfiguration.java | 46 ++++ .../examples/olingo4/ODataServlet.java | 38 +++ .../olingo4/Olingo4SampleApplication.java | 13 + .../examples/olingo4/domain/CarMaker.java | 36 +++ .../examples/olingo4/domain/CarModel.java | 38 +++ .../examples/olingo4/edm/EdmTypeMapper.java | 46 ++++ .../examples/olingo4/edm/JpaEdmProvider.java | 237 ++++++++++++++++++ .../JpaEntityCollectionProcessor.java | 185 ++++++++++++++ .../repository/CarMakerRepository.java | 12 + .../repository/CarModelRepository.java | 13 + .../repository/EdmEntityRepository.java | 15 ++ .../repository/RepositoryRegistry.java | 28 +++ .../src/main/resources/application.properties | 6 + .../olingo4/src/main/resources/data.sql | 12 + .../Olingo4SampleApplicationTests.java | 16 ++ 25 files changed, 991 insertions(+), 53 deletions(-) delete mode 100644 apache-olingo/olingo2/src/main/java/org/baeldung/examples/olingo2/EntityManagerHolder.java create mode 100644 apache-olingo/olingo4/.gitignore create mode 100644 apache-olingo/olingo4/pom.xml create mode 100644 apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/DefaultODataFactory.java create mode 100644 apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataFactory.java create mode 100644 apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataHttpHandlerFactory.java create mode 100644 apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataHttpHandlerFactoryImpl.java create mode 100644 apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataServiceConfiguration.java create mode 100644 apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataServlet.java create mode 100644 apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/Olingo4SampleApplication.java create mode 100644 apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/domain/CarMaker.java create mode 100644 apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/domain/CarModel.java create mode 100644 apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/edm/EdmTypeMapper.java create mode 100644 apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/edm/JpaEdmProvider.java create mode 100644 apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/processor/JpaEntityCollectionProcessor.java create mode 100644 apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/repository/CarMakerRepository.java create mode 100644 apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/repository/CarModelRepository.java create mode 100644 apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/repository/EdmEntityRepository.java create mode 100644 apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/repository/RepositoryRegistry.java create mode 100644 apache-olingo/olingo4/src/main/resources/application.properties create mode 100644 apache-olingo/olingo4/src/main/resources/data.sql create mode 100644 apache-olingo/olingo4/src/test/java/org/baeldung/examples/olingo4/Olingo4SampleApplicationTests.java diff --git a/apache-olingo/olingo2/src/main/java/org/baeldung/examples/olingo2/CarsODataJPAServiceFactory.java b/apache-olingo/olingo2/src/main/java/org/baeldung/examples/olingo2/CarsODataJPAServiceFactory.java index cf13bd0fc9..65a0428154 100644 --- a/apache-olingo/olingo2/src/main/java/org/baeldung/examples/olingo2/CarsODataJPAServiceFactory.java +++ b/apache-olingo/olingo2/src/main/java/org/baeldung/examples/olingo2/CarsODataJPAServiceFactory.java @@ -19,10 +19,13 @@ import javax.persistence.criteria.CriteriaDelete; import javax.persistence.criteria.CriteriaQuery; import javax.persistence.criteria.CriteriaUpdate; import javax.persistence.metamodel.Metamodel; +import javax.servlet.http.HttpServletRequest; +import org.apache.olingo.odata2.api.processor.ODataContext; import org.apache.olingo.odata2.jpa.processor.api.ODataJPAContext; import org.apache.olingo.odata2.jpa.processor.api.ODataJPAServiceFactory; import org.apache.olingo.odata2.jpa.processor.api.exception.ODataJPARuntimeException; +import org.baeldung.examples.olingo2.JerseyConfig.EntityManagerFilter; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.orm.jpa.EntityManagerFactoryUtils; @@ -36,15 +39,14 @@ import org.springframework.stereotype.Component; */ @Component public class CarsODataJPAServiceFactory extends ODataJPAServiceFactory { - + private static final Logger log = LoggerFactory.getLogger(CarsODataJPAServiceFactory.class); - + public CarsODataJPAServiceFactory() { // Enable detailed error messages (useful for debugging) setDetailErrors(true); } - /** * This method will be called by Olingo on every request to * initialize the ODataJPAContext that will be used. @@ -54,37 +56,40 @@ public class CarsODataJPAServiceFactory extends ODataJPAServiceFactory { log.info("[I32] >>> initializeODataJPAContext()"); ODataJPAContext ctx = getODataJPAContext(); - + ODataContext octx = ctx.getODataContext(); + HttpServletRequest request = (HttpServletRequest)octx.getParameter(ODataContext.HTTP_SERVLET_REQUEST_OBJECT); + EntityManager em = (EntityManager)request.getAttribute(EntityManagerFilter.EM_REQUEST_ATTRIBUTE); + // Here we're passing the EM that was created by the EntityManagerFilter (see JerseyConfig) - ctx.setEntityManager(new EntityManagerWrapper(EntityManagerHolder.getCurrentEntityManager())); + ctx.setEntityManager(new EntityManagerWrapper(em)); ctx.setPersistenceUnitName("default"); // We're managing the EM's lifecycle, so we must inform Olingo that it should not // try to manage transactions and/or persistence sessions - ctx.setContainerManaged(true); - - + ctx.setContainerManaged(true); return ctx; - } - + static class EntityManagerWrapper implements EntityManager { - + private EntityManager delegate; - + public void persist(Object entity) { - log.info("[I68] persist: entity.class=" + entity.getClass().getSimpleName()); + log.info("[I68] persist: entity.class=" + entity.getClass() + .getSimpleName()); delegate.persist(entity); - //delegate.flush(); + // delegate.flush(); } public T merge(T entity) { - log.info("[I74] merge: entity.class=" + entity.getClass().getSimpleName()); + log.info("[I74] merge: entity.class=" + entity.getClass() + .getSimpleName()); return delegate.merge(entity); } public void remove(Object entity) { - log.info("[I78] remove: entity.class=" + entity.getClass().getSimpleName()); + log.info("[I78] remove: entity.class=" + entity.getClass() + .getSimpleName()); delegate.remove(entity); } @@ -287,7 +292,7 @@ public class CarsODataJPAServiceFactory extends ODataJPAServiceFactory { public EntityManagerWrapper(EntityManager delegate) { this.delegate = delegate; } - + } } diff --git a/apache-olingo/olingo2/src/main/java/org/baeldung/examples/olingo2/EntityManagerHolder.java b/apache-olingo/olingo2/src/main/java/org/baeldung/examples/olingo2/EntityManagerHolder.java deleted file mode 100644 index 682621eb99..0000000000 --- a/apache-olingo/olingo2/src/main/java/org/baeldung/examples/olingo2/EntityManagerHolder.java +++ /dev/null @@ -1,18 +0,0 @@ -package org.baeldung.examples.olingo2; - -import javax.persistence.EntityManager; - -public class EntityManagerHolder { - - private static ThreadLocal currentEntityManager = new ThreadLocal<>(); - - - public static void setCurrentEntityManager(EntityManager em) { - currentEntityManager.set(em); - } - - public static EntityManager getCurrentEntityManager() { - return currentEntityManager.get(); - } - -} diff --git a/apache-olingo/olingo2/src/main/java/org/baeldung/examples/olingo2/JerseyConfig.java b/apache-olingo/olingo2/src/main/java/org/baeldung/examples/olingo2/JerseyConfig.java index a82220e854..78caf99861 100644 --- a/apache-olingo/olingo2/src/main/java/org/baeldung/examples/olingo2/JerseyConfig.java +++ b/apache-olingo/olingo2/src/main/java/org/baeldung/examples/olingo2/JerseyConfig.java @@ -1,4 +1,4 @@ -package org.baeldung.examples.olingo2; + package org.baeldung.examples.olingo2; import java.io.IOException; @@ -6,12 +6,14 @@ import javax.persistence.EntityManager; import javax.persistence.EntityManagerFactory; import javax.persistence.EntityTransaction; import javax.servlet.ServletContext; +import javax.servlet.http.HttpServletRequest; import javax.ws.rs.ApplicationPath; import javax.ws.rs.Path; import javax.ws.rs.container.ContainerRequestContext; import javax.ws.rs.container.ContainerRequestFilter; import javax.ws.rs.container.ContainerResponseContext; import javax.ws.rs.container.ContainerResponseFilter; +import javax.ws.rs.core.Context; import javax.ws.rs.ext.Provider; import org.apache.olingo.odata2.api.ODataServiceFactory; @@ -57,11 +59,15 @@ public class JerseyConfig extends ResourceConfig { */ @Provider public static class EntityManagerFilter implements ContainerRequestFilter, ContainerResponseFilter { - + private static final Logger log = LoggerFactory.getLogger(EntityManagerFilter.class); - + public static final String EM_REQUEST_ATTRIBUTE = EntityManagerFilter.class.getName() + "_ENTITY_MANAGER"; + private final EntityManagerFactory emf; + @Context + private HttpServletRequest httpRequest; + public EntityManagerFilter(EntityManagerFactory emf) { this.emf = emf; } @@ -70,11 +76,12 @@ public class JerseyConfig extends ResourceConfig { public void filter(ContainerRequestContext ctx) throws IOException { log.info("[I60] >>> filter"); EntityManager em = this.emf.createEntityManager(); - EntityManagerHolder.setCurrentEntityManager(em); - + httpRequest.setAttribute(EM_REQUEST_ATTRIBUTE, em); + // Start a new transaction unless we have a simple GET - if ( !"GET".equalsIgnoreCase(ctx.getMethod())) { - em.getTransaction().begin(); + if (!"GET".equalsIgnoreCase(ctx.getMethod())) { + em.getTransaction() + .begin(); } } @@ -82,24 +89,23 @@ public class JerseyConfig extends ResourceConfig { public void filter(ContainerRequestContext requestContext, ContainerResponseContext responseContext) throws IOException { log.info("[I68] <<< filter"); + EntityManager em = (EntityManager) httpRequest.getAttribute(EM_REQUEST_ATTRIBUTE); - EntityManager em = EntityManagerHolder.getCurrentEntityManager(); - if ( em != null && !"GET".equalsIgnoreCase(requestContext.getMethod())) { + if (!"GET".equalsIgnoreCase(requestContext.getMethod())) { EntityTransaction t = em.getTransaction(); - if ( t.isActive()) { - if ( !t.getRollbackOnly()) { + if (t.isActive()) { + if (!t.getRollbackOnly()) { t.commit(); } } } - + em.close(); - + } - + } - - + @Path("/") public static class CarsRootLocator extends ODataRootLocator { @@ -113,7 +119,7 @@ public class JerseyConfig extends ResourceConfig { public ODataServiceFactory getServiceFactory() { return this.serviceFactory; } - + } } diff --git a/apache-olingo/olingo2/src/main/resources/application.yml b/apache-olingo/olingo2/src/main/resources/application.yml index a29b572575..21563a94fe 100644 --- a/apache-olingo/olingo2/src/main/resources/application.yml +++ b/apache-olingo/olingo2/src/main/resources/application.yml @@ -1,4 +1,6 @@ - +server: + port: 8180 + spring: jersey: application-path: /odata diff --git a/apache-olingo/olingo4/.gitignore b/apache-olingo/olingo4/.gitignore new file mode 100644 index 0000000000..153c9335eb --- /dev/null +++ b/apache-olingo/olingo4/.gitignore @@ -0,0 +1,29 @@ +HELP.md +/target/ +!.mvn/wrapper/maven-wrapper.jar + +### STS ### +.apt_generated +.classpath +.factorypath +.project +.settings +.springBeans +.sts4-cache + +### IntelliJ IDEA ### +.idea +*.iws +*.iml +*.ipr + +### NetBeans ### +/nbproject/private/ +/nbbuild/ +/dist/ +/nbdist/ +/.nb-gradle/ +/build/ + +### VS Code ### +.vscode/ diff --git a/apache-olingo/olingo4/pom.xml b/apache-olingo/olingo4/pom.xml new file mode 100644 index 0000000000..a6f1fcdb7b --- /dev/null +++ b/apache-olingo/olingo4/pom.xml @@ -0,0 +1,95 @@ + + + 4.0.0 + + org.springframework.boot + spring-boot-starter-parent + 2.1.3.RELEASE + + + org.baeldung.examples.olingo4 + olingo4-sample + 0.0.1-SNAPSHOT + olingo4-sample + Sample Olingo 4 Project + + + 1.8 + 4.5.0 + + + + + org.springframework.boot + spring-boot-starter-data-jpa + + + + org.springframework.boot + spring-boot-configuration-processor + true + + + + com.h2database + h2 + runtime + + + + org.projectlombok + lombok + true + + + org.springframework.boot + spring-boot-starter-test + test + + + org.springframework.boot + spring-boot-starter-web + + + + org.apache.olingo + odata-server-api + ${odata.version} + + + org.apache.olingo + odata-server-core + ${odata.version} + runtime + + + + org.apache.olingo + odata-commons-api + ${odata.version} + + + org.apache.olingo + odata-commons-core + ${odata.version} + + + + commons-beanutils + commons-beanutils + 1.9.3 + + + + + + + org.springframework.boot + spring-boot-maven-plugin + + + + + diff --git a/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/DefaultODataFactory.java b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/DefaultODataFactory.java new file mode 100644 index 0000000000..18f7f8ba24 --- /dev/null +++ b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/DefaultODataFactory.java @@ -0,0 +1,20 @@ +package org.baeldung.examples.olingo4; + +import org.apache.olingo.server.api.OData; +import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean; +import org.springframework.stereotype.Component; + +/** + * Default implementation for ODataFactory + * @author Philippe + * + */ +@Component +public class DefaultODataFactory implements ODataFactory { + + @Override + public OData newInstance() { + return OData.newInstance(); + } + +} diff --git a/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataFactory.java b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataFactory.java new file mode 100644 index 0000000000..9acb4b8c5e --- /dev/null +++ b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataFactory.java @@ -0,0 +1,8 @@ +package org.baeldung.examples.olingo4; + +import org.apache.olingo.server.api.OData; + +public interface ODataFactory { + + public OData newInstance(); +} diff --git a/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataHttpHandlerFactory.java b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataHttpHandlerFactory.java new file mode 100644 index 0000000000..27d0737c24 --- /dev/null +++ b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataHttpHandlerFactory.java @@ -0,0 +1,8 @@ +package org.baeldung.examples.olingo4; + +import org.apache.olingo.server.api.ODataHttpHandler; + +public interface ODataHttpHandlerFactory { + + ODataHttpHandler newInstance(); +} diff --git a/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataHttpHandlerFactoryImpl.java b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataHttpHandlerFactoryImpl.java new file mode 100644 index 0000000000..68d39dc052 --- /dev/null +++ b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataHttpHandlerFactoryImpl.java @@ -0,0 +1,42 @@ +package org.baeldung.examples.olingo4; + +import java.util.Collections; +import java.util.List; + +import org.apache.olingo.commons.api.edm.provider.CsdlEdmProvider; +import org.apache.olingo.server.api.OData; +import org.apache.olingo.server.api.ODataHttpHandler; +import org.apache.olingo.server.api.ServiceMetadata; +import org.apache.olingo.server.api.processor.Processor; + +import lombok.Builder; + +@Builder +public class ODataHttpHandlerFactoryImpl implements ODataHttpHandlerFactory { + + + private final ODataFactory odataFactory; + private final CsdlEdmProvider edmProvider; + private final List processors; + + public ODataHttpHandlerFactoryImpl(ODataFactory odataFactory,CsdlEdmProvider edmProvider, List processors) { + this.odataFactory = odataFactory; + this.edmProvider = edmProvider; + this.processors = processors; + } + + @Override + public ODataHttpHandler newInstance() { + + OData odata = odataFactory.newInstance(); + ServiceMetadata metadata = odata.createServiceMetadata(edmProvider, Collections.emptyList()); + ODataHttpHandler handler = odata.createHandler(metadata); + + // Register all available processors + processors.forEach(p -> handler.register(p)); + + + return handler; + } + +} diff --git a/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataServiceConfiguration.java b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataServiceConfiguration.java new file mode 100644 index 0000000000..bbac0ceac7 --- /dev/null +++ b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataServiceConfiguration.java @@ -0,0 +1,46 @@ +package org.baeldung.examples.olingo4; + +import java.util.List; + +import javax.persistence.EntityManagerFactory; +import javax.servlet.http.HttpServlet; + +import org.apache.olingo.commons.api.edm.provider.CsdlEdmProvider; +import org.apache.olingo.server.api.processor.Processor; +import org.baeldung.examples.olingo4.ODataHttpHandlerFactoryImpl.ODataHttpHandlerFactoryImplBuilder; +import org.springframework.boot.web.servlet.ServletRegistrationBean; +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; + +@Configuration +public class ODataServiceConfiguration { + + + @Bean + public ServletRegistrationBean odataServletRegistration(ODataHttpHandlerFactory factory, EntityManagerFactory emf) { + + ServletRegistrationBean bean = new ServletRegistrationBean( + odataServlet(factory,emf), + "/odata/*"); + bean.setLoadOnStartup(1); + return bean; + } + + + @Bean + public HttpServlet odataServlet(ODataHttpHandlerFactory factory, EntityManagerFactory emf ) { + + return new ODataServlet(factory,emf); + } + + + @Bean + public ODataHttpHandlerFactory httpHandlerFactory(CsdlEdmProvider edmProvider, ODataFactory odataFactory, List processors) { + return new ODataHttpHandlerFactoryImplBuilder() + .edmProvider(edmProvider) + .odataFactory(odataFactory) + .processors(processors) + .build(); + } + +} diff --git a/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataServlet.java b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataServlet.java new file mode 100644 index 0000000000..c2adf2c1ae --- /dev/null +++ b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/ODataServlet.java @@ -0,0 +1,38 @@ +/** + * + */ +package org.baeldung.examples.olingo4; + +import java.io.IOException; + +import javax.persistence.EntityManager; +import javax.persistence.EntityManagerFactory; +import javax.persistence.EntityTransaction; +import javax.servlet.ServletException; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +import org.apache.olingo.server.api.ODataHttpHandler; + +/** + * @author Philippe + * + */ +public class ODataServlet extends HttpServlet { + + private static final long serialVersionUID = 1L; + private final ODataHttpHandlerFactory odataHttpHandlerFactory; + + + public ODataServlet(ODataHttpHandlerFactory factory, EntityManagerFactory emf) { + this.odataHttpHandlerFactory = factory; + } + + @Override + protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { + + ODataHttpHandler handler = odataHttpHandlerFactory.newInstance(); + handler.process(req, resp); + } +} diff --git a/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/Olingo4SampleApplication.java b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/Olingo4SampleApplication.java new file mode 100644 index 0000000000..1ac872ea0f --- /dev/null +++ b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/Olingo4SampleApplication.java @@ -0,0 +1,13 @@ +package org.baeldung.examples.olingo4; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + +@SpringBootApplication +public class Olingo4SampleApplication { + + public static void main(String[] args) { + SpringApplication.run(Olingo4SampleApplication.class, args); + } + +} diff --git a/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/domain/CarMaker.java b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/domain/CarMaker.java new file mode 100644 index 0000000000..79825b4556 --- /dev/null +++ b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/domain/CarMaker.java @@ -0,0 +1,36 @@ +package org.baeldung.examples.olingo4.domain; + +import java.util.List; + +import javax.persistence.CascadeType; +import javax.persistence.Column; +import javax.persistence.Entity; +import javax.persistence.GeneratedValue; +import javax.persistence.GenerationType; +import javax.persistence.Id; +import javax.persistence.OneToMany; +import javax.persistence.Table; +import javax.validation.constraints.NotNull; + +import lombok.Data; + +@Entity +@Data +@Table(name="car_maker") +public class CarMaker { + + @Id + @GeneratedValue(strategy=GenerationType.IDENTITY) + private Long id; + + @NotNull + @Column(name="name") + private String name; + + @OneToMany(mappedBy="maker", + orphanRemoval = true, + cascade=CascadeType.ALL) + private List models; + + +} diff --git a/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/domain/CarModel.java b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/domain/CarModel.java new file mode 100644 index 0000000000..e6cd80ebf1 --- /dev/null +++ b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/domain/CarModel.java @@ -0,0 +1,38 @@ +package org.baeldung.examples.olingo4.domain; + + +import javax.persistence.Entity; +import javax.persistence.FetchType; +import javax.persistence.GeneratedValue; +import javax.persistence.GenerationType; +import javax.persistence.Id; +import javax.persistence.JoinColumn; +import javax.persistence.ManyToOne; +import javax.persistence.Table; +import javax.validation.constraints.NotNull; + +import lombok.Data; + +@Entity +@Data +@Table(name="car_model") +public class CarModel { + + @Id + @GeneratedValue(strategy=GenerationType.AUTO) + private Long id; + + @NotNull + private String name; + + @NotNull + private Integer year; + + @NotNull + private String sku; + + @ManyToOne(optional=false, fetch= FetchType.LAZY) + @JoinColumn(name="maker_fk") + private CarMaker maker; + +} diff --git a/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/edm/EdmTypeMapper.java b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/edm/EdmTypeMapper.java new file mode 100644 index 0000000000..95797752a2 --- /dev/null +++ b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/edm/EdmTypeMapper.java @@ -0,0 +1,46 @@ +package org.baeldung.examples.olingo4.edm; + +import java.util.Collections; +import java.util.Date; +import java.util.Map; +import java.util.UUID; +import java.util.stream.Collectors; +import java.util.stream.Stream; +import java.sql.Time; +import java.util.AbstractMap.SimpleEntry; + +import org.apache.olingo.commons.api.edm.EdmPrimitiveTypeKind; +import org.springframework.stereotype.Component; + +@Component +public class EdmTypeMapper { + + public EdmPrimitiveTypeKind java2edm(Class clazz) { + EdmPrimitiveTypeKind result = java2edm.get(clazz); + if ( result == null ) { + throw new IllegalArgumentException("[E19] Unsupported class mapping: class=" + clazz); + } + else { + return result; + } + } + + // Static map used generate attribute metadada based on Java types + static Map,EdmPrimitiveTypeKind> java2edm = Collections + .unmodifiableMap(Stream.of( + new SimpleEntry<>(Boolean.class,EdmPrimitiveTypeKind.Boolean), + new SimpleEntry<>(Byte.class,EdmPrimitiveTypeKind.SByte), + new SimpleEntry<>(Date.class,EdmPrimitiveTypeKind.Date), + new SimpleEntry<>(Time.class,EdmPrimitiveTypeKind.TimeOfDay), + new SimpleEntry<>(Number.class,EdmPrimitiveTypeKind.Decimal), + new SimpleEntry<>(Float.class,EdmPrimitiveTypeKind.Single), + new SimpleEntry<>(Double.class,EdmPrimitiveTypeKind.Double), + new SimpleEntry<>(UUID.class,EdmPrimitiveTypeKind.Guid), + new SimpleEntry<>(Short.class,EdmPrimitiveTypeKind.Int16), + new SimpleEntry<>(Integer.class,EdmPrimitiveTypeKind.Int32), + new SimpleEntry<>(Long.class,EdmPrimitiveTypeKind.Int64), + new SimpleEntry<>(String.class,EdmPrimitiveTypeKind.String) + + ).collect(Collectors.toMap((e)-> e.getKey(),(e)-> e.getValue()))); + +} diff --git a/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/edm/JpaEdmProvider.java b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/edm/JpaEdmProvider.java new file mode 100644 index 0000000000..3e490cdf58 --- /dev/null +++ b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/edm/JpaEdmProvider.java @@ -0,0 +1,237 @@ +package org.baeldung.examples.olingo4.edm; + +import java.util.ArrayList; +import java.util.List; +import java.util.stream.Collectors; + +import javax.persistence.EntityManagerFactory; +import javax.persistence.metamodel.Attribute.PersistentAttributeType; +import javax.persistence.metamodel.EntityType; +import javax.persistence.metamodel.Metamodel; +import javax.persistence.metamodel.PluralAttribute; +import javax.persistence.metamodel.SingularAttribute; + +import org.apache.olingo.commons.api.edm.FullQualifiedName; +import org.apache.olingo.commons.api.edm.provider.CsdlAbstractEdmProvider; +import org.apache.olingo.commons.api.edm.provider.CsdlEntityContainer; +import org.apache.olingo.commons.api.edm.provider.CsdlEntityContainerInfo; +import org.apache.olingo.commons.api.edm.provider.CsdlEntitySet; +import org.apache.olingo.commons.api.edm.provider.CsdlEntityType; +import org.apache.olingo.commons.api.edm.provider.CsdlNavigationProperty; +import org.apache.olingo.commons.api.edm.provider.CsdlProperty; +import org.apache.olingo.commons.api.edm.provider.CsdlPropertyRef; +import org.apache.olingo.commons.api.edm.provider.CsdlSchema; +import org.apache.olingo.commons.api.ex.ODataException; +import org.springframework.stereotype.Component; + +@Component +public class JpaEdmProvider extends CsdlAbstractEdmProvider { + + EntityManagerFactory emf; + + // + private EdmTypeMapper typeMapper; + + // Service Namespace + public static final String NAMESPACE = "OData.Demo"; + + // EDM Container + public static final String CONTAINER_NAME = "Cars"; + public static final FullQualifiedName CONTAINER = new FullQualifiedName(NAMESPACE, CONTAINER_NAME); + + public JpaEdmProvider(EntityManagerFactory emf, EdmTypeMapper mapper) { + this.emf = emf; + this.typeMapper = mapper; + } + + /* (non-Javadoc) + * @see org.apache.olingo.commons.api.edm.provider.CsdlAbstractEdmProvider#getEntitySet(org.apache.olingo.commons.api.edm.FullQualifiedName, java.lang.String) + */ + @Override + public CsdlEntitySet getEntitySet(FullQualifiedName entityContainer, String entitySetName) throws ODataException { + + if (entityContainer.equals(CONTAINER)) { + + EntityType e = emf.getMetamodel() + .getEntities() + .stream() + .filter((ent) -> (ent.getName() + "s") + .equals(entitySetName)) + .findFirst() + .orElse(null); + + if (e != null) { + CsdlEntitySet entitySet = new CsdlEntitySet(); + entitySet.setName(entitySetName); + entitySet.setType(new FullQualifiedName(NAMESPACE, e.getName())); + return entitySet; + } + } + + return null; + } + + /* (non-Javadoc) + * @see org.apache.olingo.commons.api.edm.provider.CsdlAbstractEdmProvider#getEntityContainerInfo(org.apache.olingo.commons.api.edm.FullQualifiedName) + */ + @Override + public CsdlEntityContainerInfo getEntityContainerInfo(FullQualifiedName entityContainerName) throws ODataException { + + // This method is invoked when displaying the Service Document at e.g. http://localhost:8080/DemoService/DemoService.svc + if (entityContainerName == null || entityContainerName.equals(CONTAINER)) { + CsdlEntityContainerInfo entityContainerInfo = new CsdlEntityContainerInfo(); + entityContainerInfo.setContainerName(CONTAINER); + return entityContainerInfo; + } + + return null; + } + + /* (non-Javadoc) + * @see org.apache.olingo.commons.api.edm.provider.CsdlAbstractEdmProvider#getSchemas() + */ + @Override + public List getSchemas() throws ODataException { + // create Schema + CsdlSchema schema = new CsdlSchema(); + schema.setNamespace(NAMESPACE); + + // add EntityTypes + List entityTypes = emf.getMetamodel() + .getEntities() + .stream() + .map((e) -> { + try { + return getEntityType(new FullQualifiedName(NAMESPACE, e.getName())); + } catch (ODataException oe) { + throw new RuntimeException(oe); + } + }) + .collect(Collectors.toList()); + + schema.setEntityTypes(entityTypes); + + // add EntityContainer + schema.setEntityContainer(getEntityContainer()); + + // finally + List schemas = new ArrayList(); + schemas.add(schema); + + return schemas; + } + + /* (non-Javadoc) + * @see org.apache.olingo.commons.api.edm.provider.CsdlAbstractEdmProvider#getEntityContainer() + */ + @Override + public CsdlEntityContainer getEntityContainer() throws ODataException { + + + // add EntityTypes + List entitySets = emf.getMetamodel() + .getEntities() + .stream() + .map((e) -> { + try { + // Here we use a simple mapping strategy to map entity types to entity set names: + // + return getEntitySet(CONTAINER, e.getName() + "s"); + } catch (ODataException oe) { + throw new RuntimeException(oe); + } + }) + .collect(Collectors.toList()); + + // create EntityContainer + CsdlEntityContainer entityContainer = new CsdlEntityContainer(); + entityContainer.setName(CONTAINER_NAME); + entityContainer.setEntitySets(entitySets); + + return entityContainer; + } + + @Override + public CsdlEntityType getEntityType(FullQualifiedName entityTypeName) throws ODataException { + + Metamodel mm = emf.getMetamodel(); + + CsdlEntityType result = null; + + result = mm.getEntities() + .stream() + .filter(et -> entityTypeName.equals(new FullQualifiedName(NAMESPACE, et.getName()))) + .map(et -> buildODataType(et)) + .findFirst() + .orElse(null); + + return result; + + } + + /** + * Maps a JPA type to its OData counterpart. + * @param et + * @return + */ + protected CsdlEntityType buildODataType(EntityType et) { + + CsdlEntityType result = new CsdlEntityType(); + result.setName(et.getName()); + + // Process simple properties + List properties = et.getDeclaredSingularAttributes() + .stream() + .filter(attr -> attr.getPersistentAttributeType() == PersistentAttributeType.BASIC) + .map(attr -> buildBasicAttribute(et, attr)) + .collect(Collectors.toList()); + + result.setProperties(properties); + + // Process Ids + List ids = et.getDeclaredSingularAttributes() + .stream() + .filter(attr -> attr.getPersistentAttributeType() == PersistentAttributeType.BASIC && attr.isId()) + .map(attr -> buildRefAttribute(et, attr)) + .collect(Collectors.toList()); + + result.setKey(ids); + + // Process navs + List navs = et.getDeclaredPluralAttributes() + .stream() + .map(attr -> buildNavAttribute(et, attr)) + .collect(Collectors.toList()); + result.setNavigationProperties(navs); + + return result; + } + + private CsdlProperty buildBasicAttribute(EntityType et, SingularAttribute attr) { + + CsdlProperty p = new CsdlProperty().setName(attr.getName()) + .setType(typeMapper.java2edm(attr.getJavaType()) + .getFullQualifiedName()) + .setNullable(et.getDeclaredSingularAttribute(attr.getName()) + .isOptional()); + + return p; + } + + private CsdlPropertyRef buildRefAttribute(EntityType et, SingularAttribute attr) { + + CsdlPropertyRef p = new CsdlPropertyRef().setName(attr.getName()); + + return p; + } + + private CsdlNavigationProperty buildNavAttribute(EntityType et, PluralAttribute attr) { + + CsdlNavigationProperty p = new CsdlNavigationProperty().setName(attr.getName()) + .setType(new FullQualifiedName(NAMESPACE, attr.getBindableJavaType().getSimpleName())) + .setNullable(false); // for now + + return p; + } + +} diff --git a/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/processor/JpaEntityCollectionProcessor.java b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/processor/JpaEntityCollectionProcessor.java new file mode 100644 index 0000000000..ed921484c1 --- /dev/null +++ b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/processor/JpaEntityCollectionProcessor.java @@ -0,0 +1,185 @@ +package org.baeldung.examples.olingo4.processor; + +import java.io.ByteArrayInputStream; +import java.io.InputStream; +import java.lang.reflect.InvocationTargetException; +import java.net.URI; +import java.net.URISyntaxException; +import java.util.List; + +import javax.persistence.EntityManagerFactory; +import javax.persistence.metamodel.EntityType; +import javax.persistence.metamodel.SingularAttribute; + +import org.apache.commons.beanutils.PropertyUtils; +import org.apache.olingo.commons.api.data.ContextURL; +import org.apache.olingo.commons.api.data.Entity; +import org.apache.olingo.commons.api.data.EntityCollection; +import org.apache.olingo.commons.api.data.Property; +import org.apache.olingo.commons.api.data.ValueType; +import org.apache.olingo.commons.api.edm.EdmEntitySet; +import org.apache.olingo.commons.api.edm.EdmEntityType; +import org.apache.olingo.commons.api.ex.ODataRuntimeException; +import org.apache.olingo.commons.api.format.ContentType; +import org.apache.olingo.commons.api.http.HttpHeader; +import org.apache.olingo.commons.api.http.HttpStatusCode; +import org.apache.olingo.server.api.OData; +import org.apache.olingo.server.api.ODataApplicationException; +import org.apache.olingo.server.api.ODataLibraryException; +import org.apache.olingo.server.api.ODataRequest; +import org.apache.olingo.server.api.ODataResponse; +import org.apache.olingo.server.api.ServiceMetadata; +import org.apache.olingo.server.api.processor.CountEntityCollectionProcessor; +import org.apache.olingo.server.api.processor.EntityCollectionProcessor; +import org.apache.olingo.server.api.serializer.EntityCollectionSerializerOptions; +import org.apache.olingo.server.api.serializer.ODataSerializer; +import org.apache.olingo.server.api.serializer.SerializerResult; +import org.apache.olingo.server.api.uri.UriInfo; +import org.apache.olingo.server.api.uri.UriResource; +import org.apache.olingo.server.api.uri.UriResourceEntitySet; +import org.baeldung.examples.olingo4.repository.RepositoryRegistry; +import org.springframework.data.jpa.repository.JpaRepository; +import org.springframework.stereotype.Component; + +@Component +public class JpaEntityCollectionProcessor implements CountEntityCollectionProcessor { + + private OData odata; + private ServiceMetadata serviceMetadata; + private EntityManagerFactory emf; + private RepositoryRegistry repositoryRegistry; + + public JpaEntityCollectionProcessor(EntityManagerFactory emf, RepositoryRegistry repositoryRegistry) { + this.emf = emf; + this.repositoryRegistry = repositoryRegistry; + } + + @Override + public void init(OData odata, ServiceMetadata serviceMetadata) { + this.odata = odata; + this.serviceMetadata = serviceMetadata; + } + + @Override + public void readEntityCollection(ODataRequest request, ODataResponse response, UriInfo uriInfo, ContentType responseFormat) throws ODataApplicationException, ODataLibraryException { + + // 1st we have retrieve the requested EntitySet from the uriInfo object (representation of the parsed service URI) + List resourcePaths = uriInfo.getUriResourceParts(); + UriResourceEntitySet uriResourceEntitySet = (UriResourceEntitySet) resourcePaths.get(0); // in our example, the first segment is the EntitySet + EdmEntitySet edmEntitySet = uriResourceEntitySet.getEntitySet(); + + // 2nd: fetch the data from backend for this requested EntitySetName + // it has to be delivered as EntitySet object + EntityCollection entitySet = getData(edmEntitySet, uriInfo); + + // 3rd: create a serializer based on the requested format (json) + ODataSerializer serializer = odata.createSerializer(responseFormat); + + // 4th: Now serialize the content: transform from the EntitySet object to InputStream + EdmEntityType edmEntityType = edmEntitySet.getEntityType(); + ContextURL contextUrl = ContextURL.with() + .entitySet(edmEntitySet) + .build(); + + final String id = request.getRawBaseUri() + "/" + edmEntitySet.getName(); + EntityCollectionSerializerOptions opts = EntityCollectionSerializerOptions.with() + .id(id) + .contextURL(contextUrl) + .build(); + SerializerResult serializerResult = serializer.entityCollection(serviceMetadata, edmEntityType, entitySet, opts); + InputStream serializedContent = serializerResult.getContent(); + + // Finally: configure the response object: set the body, headers and status code + response.setContent(serializedContent); + response.setStatusCode(HttpStatusCode.OK.getStatusCode()); + response.setHeader(HttpHeader.CONTENT_TYPE, responseFormat.toContentTypeString()); + + } + + @Override + public void countEntityCollection(ODataRequest request, ODataResponse response, UriInfo uriInfo) throws ODataApplicationException, ODataLibraryException { + + // 1st we have retrieve the requested EntitySet from the uriInfo object (representation of the parsed service URI) + List resourcePaths = uriInfo.getUriResourceParts(); + UriResourceEntitySet uriResourceEntitySet = (UriResourceEntitySet) resourcePaths.get(0); // in our example, the first segment is the EntitySet + EdmEntitySet edmEntitySet = uriResourceEntitySet.getEntitySet(); + + // 2nd: fetch the data from backend for this requested EntitySetName + Long count = getCount(edmEntitySet, uriInfo); + + // Finally: configure the response object: set the body, headers and status code + response.setContent(new ByteArrayInputStream(count.toString() + .getBytes())); + response.setStatusCode(HttpStatusCode.OK.getStatusCode()); + response.setHeader(HttpHeader.CONTENT_TYPE, "text/plain"); + + } + + private EntityCollection getData(EdmEntitySet edmEntitySet, UriInfo uriInfo) { + + EdmEntityType type = edmEntitySet.getEntityType(); + JpaRepository repo = repositoryRegistry.getRepositoryForEntity(type); + EntityCollection result = new EntityCollection(); + + repo.findAll() + .stream() + .forEach((it) -> result.getEntities() + .add(map2entity(edmEntitySet, it))); + + return result; + } + + private Entity map2entity(EdmEntitySet edmEntitySet, Object entry) { + + EntityType et = emf.getMetamodel() + .entity(entry.getClass()); + + + Entity e = new Entity(); + try { + // First, we set the entity's primary key + + // Now map all properties + et.getDeclaredSingularAttributes().stream() + .forEach( (attr) -> { + if ( !attr.isAssociation()) { + Object v = getPropertyValue(entry,attr.getName()); + Property p = new Property(null, attr.getName(),ValueType.PRIMITIVE,v); + e.addProperty(p); + + if ( attr.isId()) { + e.setId(createId(edmEntitySet.getName(),v)); + } + } + + }); + + } catch (Exception ex) { + throw new ODataRuntimeException("[E141] Unable to create OData entity", ex); + } + + return e; + } + + private Object getPropertyValue(Object entry, String name) { + try { + return PropertyUtils.getProperty(entry,name); + } catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) { + throw new ODataRuntimeException("[E141] Unable to read property from entity, property=" + name, e); + } + } + + private URI createId(String entitySetName, Object id) { + try { + return new URI(entitySetName + "(" + String.valueOf(id) + ")"); + } catch (URISyntaxException e) { + throw new ODataRuntimeException("[E177] Unable to create URI", e); + } + } + + private Long getCount(EdmEntitySet edmEntitySet, UriInfo uriInfo) { + // TODO Auto-generated method stub + return null; + } + +} diff --git a/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/repository/CarMakerRepository.java b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/repository/CarMakerRepository.java new file mode 100644 index 0000000000..70664bcf86 --- /dev/null +++ b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/repository/CarMakerRepository.java @@ -0,0 +1,12 @@ +package org.baeldung.examples.olingo4.repository; + +import org.baeldung.examples.olingo4.domain.CarMaker; +import org.springframework.data.jpa.repository.JpaRepository; +import org.springframework.data.jpa.repository.JpaSpecificationExecutor; +import org.springframework.stereotype.Repository; + +@Repository +public interface CarMakerRepository extends JpaRepository, JpaSpecificationExecutor, EdmEntityRepository { + + public default String getEdmEntityName() { return CarMaker.class.getSimpleName();} +} diff --git a/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/repository/CarModelRepository.java b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/repository/CarModelRepository.java new file mode 100644 index 0000000000..40590b15e1 --- /dev/null +++ b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/repository/CarModelRepository.java @@ -0,0 +1,13 @@ +package org.baeldung.examples.olingo4.repository; + +import org.baeldung.examples.olingo4.domain.CarModel; +import org.springframework.data.jpa.repository.JpaRepository; +import org.springframework.data.jpa.repository.JpaSpecificationExecutor; +import org.springframework.stereotype.Repository; + +@Repository +public interface CarModelRepository extends JpaRepository, JpaSpecificationExecutor,EdmEntityRepository { + + public default String getEdmEntityName() { return CarModel.class.getSimpleName();} + +} diff --git a/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/repository/EdmEntityRepository.java b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/repository/EdmEntityRepository.java new file mode 100644 index 0000000000..105925c958 --- /dev/null +++ b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/repository/EdmEntityRepository.java @@ -0,0 +1,15 @@ +/** + * + */ +package org.baeldung.examples.olingo4.repository; + + +/** + * @author Philippe + * + */ +public interface EdmEntityRepository { + + public String getEdmEntityName(); + +} diff --git a/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/repository/RepositoryRegistry.java b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/repository/RepositoryRegistry.java new file mode 100644 index 0000000000..991eb21fc2 --- /dev/null +++ b/apache-olingo/olingo4/src/main/java/org/baeldung/examples/olingo4/repository/RepositoryRegistry.java @@ -0,0 +1,28 @@ +package org.baeldung.examples.olingo4.repository; + +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +import org.apache.olingo.commons.api.edm.EdmEntityType; +import org.springframework.data.jpa.repository.JpaRepository; +import org.springframework.stereotype.Component; + +@Component +public class RepositoryRegistry { + + private Map> repositoriesByClassName = new HashMap<>(); + + public RepositoryRegistry(List allRepositories) { + + allRepositories.stream().forEach((r) -> + repositoriesByClassName.put(r.getEdmEntityName(),(JpaRepository)r)); + + } + + + public JpaRepository getRepositoryForEntity(EdmEntityType entityType) { + JpaRepository repo = repositoriesByClassName.get(entityType.getName()); + return repo; + } +} diff --git a/apache-olingo/olingo4/src/main/resources/application.properties b/apache-olingo/olingo4/src/main/resources/application.properties new file mode 100644 index 0000000000..6f115b5ae4 --- /dev/null +++ b/apache-olingo/olingo4/src/main/resources/application.properties @@ -0,0 +1,6 @@ +spring: + jpa: + show-sql: true + open-in-view: false + hibernate: + ddl-auto: update diff --git a/apache-olingo/olingo4/src/main/resources/data.sql b/apache-olingo/olingo4/src/main/resources/data.sql new file mode 100644 index 0000000000..327f2688c5 --- /dev/null +++ b/apache-olingo/olingo4/src/main/resources/data.sql @@ -0,0 +1,12 @@ +insert into car_maker(id,name) values (1,'Special Motors'); +insert into car_maker(id,name) values (2,'BWM'); +insert into car_maker(id,name) values (3,'Dolores'); + +insert into car_model(id,maker_fk,name,sku,year) values(1,1,'Muze','SM001',2018); +insert into car_model(id,maker_fk,name,sku,year) values(2,1,'Empada','SM002',2008); + +insert into car_model(id,maker_fk,name,sku,year) values(4,2,'BWM-100','BWM100',2008); +insert into car_model(id,maker_fk,name,sku,year) values(5,2,'BWM-200','BWM200',2009); +insert into car_model(id,maker_fk,name,sku,year) values(6,2,'BWM-300','BWM300',2008); + +alter sequence hibernate_sequence restart with 100; \ No newline at end of file diff --git a/apache-olingo/olingo4/src/test/java/org/baeldung/examples/olingo4/Olingo4SampleApplicationTests.java b/apache-olingo/olingo4/src/test/java/org/baeldung/examples/olingo4/Olingo4SampleApplicationTests.java new file mode 100644 index 0000000000..5d23a4148e --- /dev/null +++ b/apache-olingo/olingo4/src/test/java/org/baeldung/examples/olingo4/Olingo4SampleApplicationTests.java @@ -0,0 +1,16 @@ +package org.baeldung.examples.olingo4; + +import org.junit.Test; +import org.junit.runner.RunWith; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.test.context.junit4.SpringRunner; + +@RunWith(SpringRunner.class) +@SpringBootTest +public class Olingo4SampleApplicationTests { + + @Test + public void contextLoads() { + } + +}