Android Open Source - andro_auto_framework Record Entry Resource

• Back to Framework/framework  ↑

From Project

Back to project page andro_auto_framework.

License

The source code is released under:

Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCT...

Java Source Code

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.//from   w  w  w  .  j a v  a  2 s . com
 */
package com.imaginea.botbot.server.service;

import com.imaginea.botbot.server.jpa.RecordEntry;
import javax.ws.rs.Path;
import javax.ws.rs.GET;
import javax.ws.rs.PUT;
import javax.ws.rs.DELETE;
import javax.ws.rs.Produces;
import javax.ws.rs.Consumes;
import javax.ws.rs.QueryParam;
import javax.ws.rs.DefaultValue;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.UriInfo;
import javax.ws.rs.WebApplicationException;
import javax.persistence.NoResultException;
import javax.persistence.EntityManager;
import com.imaginea.botbot.server.jpa.RecordSession;
import com.imaginea.botbot.server.converter.RecordEntryConverter;
import com.sun.jersey.api.core.ResourceContext;
import java.net.URI;

/**
 *
 * @author rohit
 */
public class RecordEntryResource {
    @Context
    protected com.sun.jersey.api.core.ResourceContext resourceContext;
    @Context
    protected javax.ws.rs.core.UriInfo uriInfo;
    
    protected Long id;

    /** Creates a new instance of RecordEntryResource */
    public RecordEntryResource() {
    }

    public void setId(Long id) {
        this.id = id;
    }

    /**
     * Get method for retrieving an instance of RecordEntry identified by id in XML format.
     *
     * @param id identifier for the entity
     * @return an instance of RecordEntryConverter
     */
    @GET
    @Produces({"application/xml", "application/json"})
    public RecordEntryConverter get(@QueryParam("expandLevel")
            @DefaultValue("1") int expandLevel) {
        PersistenceService persistenceSvc = PersistenceService.getInstance();
        try {
            persistenceSvc.beginTx();
            return new RecordEntryConverter(getEntity(), uriInfo.getAbsolutePath().resolve(URI.create(getEntity().getId().toString())), expandLevel);
        } finally {
            PersistenceService.getInstance().close();
        }
    }

    /**
     * Put method for updating an instance of RecordEntry identified by id using XML as the input format.
     *
     * @param id identifier for the entity
     * @param data an RecordEntryConverter entity that is deserialized from a XML stream
     */
    @PUT
    @Consumes({"application/xml", "application/json"})
    public void put(RecordEntryConverter data) {
        PersistenceService persistenceSvc = PersistenceService.getInstance();
        try {
            persistenceSvc.beginTx();
            EntityManager em = persistenceSvc.getEntityManager();
            updateEntity(getEntity(), data.resolveEntity(em));
            persistenceSvc.commitTx();
        } finally {
            persistenceSvc.close();
        }
    }

    /**
     * Delete method for deleting an instance of RecordEntry identified by id.
     *
     * @param id identifier for the entity
     */
    @DELETE
    public void delete() {
        PersistenceService persistenceSvc = PersistenceService.getInstance();
        try {
            persistenceSvc.beginTx();
            deleteEntity(getEntity());
            persistenceSvc.commitTx();
        } finally {
            persistenceSvc.close();
        }
    }

    /**
     * Returns an instance of RecordEntry identified by id.
     *
     * @param id identifier for the entity
     * @return an instance of RecordEntry
     */
    protected RecordEntry getEntity() {
        EntityManager em = PersistenceService.getInstance().getEntityManager();
        try {
            return (RecordEntry) em.createQuery("SELECT e FROM RecordEntry e where e.id = :id").setParameter("id", id).getSingleResult();
        } catch (NoResultException ex) {
            throw new WebApplicationException(new Throwable("Resource for " + uriInfo.getAbsolutePath().resolve(URI.create("")) + " does not exist."), 404);
        }
    }

    /**
     * Updates entity using data from newEntity.
     *
     * @param entity the entity to update
     * @param newEntity the entity containing the new data
     * @return the updated entity
     */
    private RecordEntry updateEntity(RecordEntry entity, RecordEntry newEntity) {
        EntityManager em = PersistenceService.getInstance().getEntityManager();
        RecordSession recordSession = entity.getRecordSession();
        RecordSession recordSessionNew = newEntity.getRecordSession();
        entity = em.merge(newEntity);
        if (recordSession != null && !recordSession.equals(recordSessionNew)) {
            recordSession.getRecordEntries().remove(entity);
        }
        if (recordSessionNew != null && !recordSessionNew.equals(recordSession)) {
            recordSessionNew.getRecordEntries().add(entity);
        }
        return entity;
    }

    /**
     * Deletes the entity.
     *
     * @param entity the entity to deletle
     */
    private void deleteEntity(RecordEntry entity) {
        EntityManager em = PersistenceService.getInstance().getEntityManager();
        RecordSession recordSession = entity.getRecordSession();
        if (recordSession != null) {
            recordSession.getRecordEntries().remove(entity);
        }
        em.remove(entity);
    }

    /**
     * Returns a dynamic instance of RecordSessionResource used for entity navigation.
     *
     * @param id identifier for the parent entity
     * @return an instance of RecordSessionResource
     */
    @Path("recordsession/")
    public RecordSessionResource getRecordSessionResource() {
        RecordSessionResourceSub recordSessionResourceSub = resourceContext.getResource(RecordSessionResourceSub.class);
        recordSessionResourceSub.setParent(getEntity());
        return recordSessionResourceSub;
    }

    public static class RecordSessionResourceSub extends RecordSessionResource {

        private RecordEntry parent;

        public void setParent(RecordEntry parent) {
            this.parent = parent;
        }

        @Override
        protected RecordSession getEntity() {
            RecordSession entity = parent.getRecordSession();
            if (entity == null) {
                throw new WebApplicationException(new Throwable("Resource for " + URI.create("") + " does not exist."), 404);
            }
            return entity;
        }
    }
}

Java Source Code List

• Back to Framework/framework  ↑