olingo实例代码

package cn.slimsmart.olingo.test; import javax.persistence.EntityManagerFactory; import javax.persistence.Persistence; 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; public class UserServiceFactory extends ODataJPAServiceFactory { private static final String PERSISTENCE_UNIT_NAME = "jpa"; @Override public ODataJPAContext initializeODataJPAContext() throws ODataJPARuntimeException { ODataJPAContext oDataJPAContext = this.getODataJPAContext(); try { EntityManagerFactory emf = Persistence.createEntityManagerFactory(PERSISTENCE_UNIT_NAME); oDataJPAContext.setEntityManagerFactory(emf); oDataJPAContext.setPersistenceUnitName(PERSISTENCE_UNIT_NAME); return oDataJPAContext; } catch (Exception e) { throw new RuntimeException(e); } } }