| /* |
| * Copyright (c) 2011, 2021 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 v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // gonural - Initial implementation |
| // 2014-09-01-2.6.0 Dmitry Kornilov |
| // - JPARS v2.0 related changes |
| package org.eclipse.persistence.jpa.rs.resources.common; |
| |
| 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.exceptions.JPARSException; |
| import org.eclipse.persistence.jpa.rs.features.FeatureResponseBuilder; |
| import org.eclipse.persistence.jpa.rs.features.FeatureSet.Feature; |
| import org.eclipse.persistence.jpa.rs.util.JPARSLogger; |
| import org.eclipse.persistence.jpa.rs.util.StreamingOutputMarshaller; |
| import org.eclipse.persistence.jpa.rs.util.list.SingleResultQuery; |
| import org.eclipse.persistence.queries.DatabaseQuery; |
| import org.eclipse.persistence.queries.ReportQuery; |
| |
| import jakarta.persistence.Query; |
| import jakarta.ws.rs.core.HttpHeaders; |
| import jakarta.ws.rs.core.MediaType; |
| import jakarta.ws.rs.core.Response; |
| import jakarta.ws.rs.core.UriInfo; |
| import jakarta.xml.bind.JAXBElement; |
| import java.util.List; |
| |
| /** |
| * Base class for all single result query resources. |
| * |
| * @author gonural |
| */ |
| public abstract class AbstractSingleResultQueryResource extends AbstractResource { |
| private static final String CLASS_NAME = AbstractSingleResultQueryResource.class.getName(); |
| |
| /** |
| * Named query single result. |
| * |
| * @param version the version |
| * @param persistenceUnit the persistence unit |
| * @param queryName the query name |
| * @param headers the http headers |
| * @param uriInfo the uriInfo |
| * @return the response |
| */ |
| @SuppressWarnings("rawtypes") |
| protected Response namedQuerySingleResultInternal(String version, String persistenceUnit, String queryName, HttpHeaders headers, UriInfo uriInfo) { |
| JPARSLogger.entering(CLASS_NAME, "namedQuerySingleResultInternal", new Object[] { "GET", version, persistenceUnit, queryName, uriInfo.getRequestUri().toASCIIString() }); |
| try { |
| final PersistenceContext context = getPersistenceContext(persistenceUnit, null, uriInfo.getBaseUri(), version, null); |
| final Query query = context.buildQuery(getMatrixParameters(uriInfo, persistenceUnit), queryName, getMatrixParameters(uriInfo, queryName), getQueryParameters(uriInfo)); |
| final DatabaseQuery dbQuery = ((EJBQueryImpl<?>) query).getDatabaseQuery(); |
| final FeatureResponseBuilder responseBuilder = context.getSupportedFeatureSet().getResponseBuilder(Feature.NO_PAGING); |
| |
| if (dbQuery instanceof ReportQuery) { |
| final List<ReportItem> reportItems = ((ReportQuery) dbQuery).getItems(); |
| final Object queryResults = query.getSingleResult(); |
| final Object response = responseBuilder.buildSingleResultQueryResponse(context, getQueryParameters(uriInfo), queryResults, reportItems, uriInfo); |
| |
| if (response != null && response instanceof SingleResultQuery) { |
| final SingleResultQuery singleResultQuery = (SingleResultQuery) response; |
| final List<JAXBElement<?>> item = singleResultQuery.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 = headers.getAcceptableMediaTypes(); |
| if (acceptableMediaTypes.contains(MediaType.APPLICATION_OCTET_STREAM_TYPE)) { |
| return Response.ok(new StreamingOutputMarshaller(context, elementValue, headers.getAcceptableMediaTypes())).build(); |
| } |
| } |
| } |
| |
| return Response.ok(new StreamingOutputMarshaller(context, response, headers.getAcceptableMediaTypes())).build(); |
| } else { |
| // something went wrong with the descriptors, return error |
| throw JPARSException.responseCouldNotBeBuiltForNamedQueryRequest(queryName, context.getName()); |
| } |
| } |
| |
| final Object queryResult = query.getSingleResult(); |
| return Response.ok(new StreamingOutputMarshaller(context, responseBuilder.buildSingleEntityResponse(context, getQueryParameters(uriInfo), queryResult, uriInfo), headers.getAcceptableMediaTypes())).build(); |
| } catch (Exception ex) { |
| throw JPARSException.exceptionOccurred(ex); |
| } |
| } |
| } |