| /******************************************************************************* |
| * Copyright (c) 2011, 2013 Oracle and/or its affiliates. All rights reserved. |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 |
| * which accompanies this distribution. |
| * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html |
| * and the Eclipse Distribution License is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * |
| ******************************************************************************/ |
| package org.eclipse.persistence.jpa.rs.resources.common; |
| |
| import java.net.URI; |
| import java.util.List; |
| |
| import javax.persistence.Query; |
| import javax.ws.rs.core.HttpHeaders; |
| import javax.ws.rs.core.MediaType; |
| import javax.ws.rs.core.Response; |
| import javax.ws.rs.core.Response.Status; |
| import javax.ws.rs.core.UriInfo; |
| import javax.xml.bind.JAXBElement; |
| |
| import org.eclipse.persistence.internal.jpa.EJBQueryImpl; |
| import org.eclipse.persistence.internal.queries.ReportItem; |
| import org.eclipse.persistence.jpa.rs.PersistenceContext; |
| import org.eclipse.persistence.jpa.rs.util.JPARSLogger; |
| import org.eclipse.persistence.jpa.rs.util.StreamingOutputMarshaller; |
| import org.eclipse.persistence.jpa.rs.util.list.SingleResultQueryList; |
| import org.eclipse.persistence.queries.DatabaseQuery; |
| import org.eclipse.persistence.queries.ReportQuery; |
| |
| /** |
| * @author gonural |
| * |
| */ |
| public abstract class AbstractSingleResultQueryResource extends AbstractResource { |
| @SuppressWarnings("rawtypes") |
| protected Response namedQuerySingleResult(String version, String persistenceUnit, String name, HttpHeaders hh, UriInfo ui, URI baseURI) { |
| PersistenceContext app = getPersistenceContext(persistenceUnit, baseURI, version, null); |
| if (app == null) { |
| JPARSLogger.fine("jpars_could_not_find_persistence_context", new Object[] { persistenceUnit }); |
| return Response.status(Status.NOT_FOUND).type(StreamingOutputMarshaller.getResponseMediaType(hh)).build(); |
| } |
| |
| Query query = app.buildQuery(getMatrixParameters(ui, persistenceUnit), name, getMatrixParameters(ui, name), getQueryParameters(ui)); |
| DatabaseQuery dbQuery = ((EJBQueryImpl<?>) query).getDatabaseQuery(); |
| if (dbQuery instanceof ReportQuery) { |
| List<ReportItem> reportItems = ((ReportQuery) dbQuery).getItems(); |
| Object queryResults = query.getSingleResult(); |
| SingleResultQueryList list = populateReportQueryResponse(queryResults, reportItems); |
| if (list != null) { |
| List<JAXBElement> item = list.getFields(); |
| if ((item != null) && (item.size() == 1)) { |
| // Fix for Bug 393320 - JPA-RS: Respect the Accept Header for a singleResultQuery |
| // If there is only one item in the select clause and if value of that item is binary, we will create a response with |
| // that binary data without converting its to Base64. |
| JAXBElement element = item.get(0); |
| Object elementValue = element.getValue(); |
| if (elementValue instanceof byte[]) { |
| List<MediaType> acceptableMediaTypes = hh.getAcceptableMediaTypes(); |
| if (acceptableMediaTypes.contains(MediaType.APPLICATION_OCTET_STREAM_TYPE)) { |
| return Response.ok(new StreamingOutputMarshaller(app, elementValue, hh.getAcceptableMediaTypes())).build(); |
| } |
| } |
| } |
| return Response.ok(new StreamingOutputMarshaller(app, list, hh.getAcceptableMediaTypes())).build(); |
| } else { |
| // something went wrong with the descriptors, return error |
| return Response.status(Status.INTERNAL_SERVER_ERROR).type(StreamingOutputMarshaller.getResponseMediaType(hh)).build(); |
| } |
| } |
| Object queryResults = query.getSingleResult(); |
| return Response.ok(new StreamingOutputMarshaller(app, queryResults, hh.getAcceptableMediaTypes())).build(); |
| } |
| |
| @SuppressWarnings({ "rawtypes" }) |
| private SingleResultQueryList populateReportQueryResponse(Object result, List<ReportItem> reportItems) { |
| SingleResultQueryList response = new SingleResultQueryList(); |
| List<JAXBElement> fields = createShellJAXBElementList(reportItems, result); |
| if (fields == null) { |
| return null; |
| } |
| response.setFields(fields); |
| return response; |
| } |
| } |