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/* * To change this template, choose Tools | Templates * and open the template in the editor.//w w w. ja v a 2s . com */ package com.imaginea.botbot.server.service; import com.imaginea.botbot.server.jpa.RecordSession; import java.util.Collection; import javax.ws.rs.Path; import javax.ws.rs.GET; import javax.ws.rs.POST; import javax.ws.rs.Produces; import javax.ws.rs.Consumes; import javax.ws.rs.PathParam; import javax.ws.rs.QueryParam; import javax.ws.rs.DefaultValue; import javax.ws.rs.core.Response; import javax.ws.rs.core.Context; import javax.ws.rs.core.UriInfo; import javax.persistence.EntityManager; import com.imaginea.botbot.server.jpa.RecordEntry; import com.imaginea.botbot.server.converter.RecordSessionsConverter; import com.imaginea.botbot.server.converter.RecordSessionConverter; import com.sun.jersey.api.core.ResourceContext; import java.net.URI; /** * * @author rohit */ @Path("/recordsessions/") public class RecordSessionsResource { @Context protected com.sun.jersey.api.core.ResourceContext resourceContext; @Context protected javax.ws.rs.core.UriInfo uriInfo; /** Creates a new instance of RecordSessionsResource */ public RecordSessionsResource() { } /** * Get method for retrieving a collection of RecordSession instance in XML format. * * @return an instance of RecordSessionsConverter */ @GET @Produces({"application/xml", "application/json"}) public RecordSessionsConverter get(@QueryParam("start") @DefaultValue("0") int start, @QueryParam("max") @DefaultValue("100") int max, @QueryParam("expandLevel") @DefaultValue("1") int expandLevel, @QueryParam("query") @DefaultValue("SELECT e FROM RecordSession e") String query) { PersistenceService persistenceSvc = PersistenceService.getInstance(); try { persistenceSvc.beginTx(); return new RecordSessionsConverter(getEntities(start, max, query), uriInfo.getAbsolutePath().resolve(URI.create("")), expandLevel); } finally { persistenceSvc.commitTx(); persistenceSvc.close(); } } /** * Post method for creating an instance of RecordSession using XML as the input format. * * @param data an RecordSessionConverter entity that is deserialized from an XML stream * @return an instance of RecordSessionConverter */ @POST @Consumes({"application/xml", "application/json"}) public javax.ws.rs.core.Response post(RecordSessionConverter data) { PersistenceService persistenceSvc = PersistenceService.getInstance(); try { persistenceSvc.beginTx(); EntityManager em = persistenceSvc.getEntityManager(); RecordSession entity = data.resolveEntity(em); createEntity(data.resolveEntity(em)); persistenceSvc.commitTx(); //return Response.created(uriInfo.getAbsolutePath().resolve(entity.getId() + "/")).build(); return Response.created(URI.create(entity.getId().toString())).build(); } finally { persistenceSvc.close(); } } /** * Returns a dynamic instance of RecordSessionResource used for entity navigation. * * @return an instance of RecordSessionResource */ @Path("{id}/") public RecordSessionResource getRecordSessionResource(@PathParam("id") Long id) { RecordSessionResource recordSessionResource = resourceContext.getResource(RecordSessionResource.class); recordSessionResource.setId(id); return recordSessionResource; } /** * Returns all the entities associated with this resource. * * @return a collection of RecordSession instances */ protected Collection<RecordSession> getEntities(int start, int max, String query) { EntityManager em = PersistenceService.getInstance().getEntityManager(); return em.createQuery(query).setFirstResult(start).setMaxResults(max).getResultList(); } /** * Persist the given entity. * * @param entity the entity to persist */ protected void createEntity(RecordSession entity) { entity.setId(null); EntityManager em = PersistenceService.getInstance().getEntityManager(); em.persist(entity); for (RecordEntry value : entity.getRecordEntries()) { RecordSession oldEntity = value.getRecordSession(); value.setRecordSession(entity); if (oldEntity != null) { oldEntity.getRecordEntries().remove(value); } } } }