| /* |
| * 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 java.util.List; |
| import java.util.Map; |
| |
| import jakarta.persistence.Query; |
| import jakarta.ws.rs.core.HttpHeaders; |
| import jakarta.ws.rs.core.Response; |
| import jakarta.ws.rs.core.UriInfo; |
| import jakarta.xml.bind.JAXBElement; |
| import javax.xml.namespace.QName; |
| |
| 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.QueryParameters; |
| import org.eclipse.persistence.jpa.rs.ReservedWords; |
| import org.eclipse.persistence.jpa.rs.exceptions.JPARSException; |
| import org.eclipse.persistence.jpa.rs.features.FeatureResponseBuilder; |
| import org.eclipse.persistence.jpa.rs.features.FeatureSet; |
| import org.eclipse.persistence.jpa.rs.features.FeatureSet.Feature; |
| import org.eclipse.persistence.jpa.rs.features.core.selflinks.SelfLinksResponseBuilder; |
| import org.eclipse.persistence.jpa.rs.features.fieldsfiltering.FieldsFilter; |
| import org.eclipse.persistence.jpa.rs.features.fieldsfiltering.FieldsFilteringValidator; |
| import org.eclipse.persistence.jpa.rs.features.paging.PageableQueryValidator; |
| import org.eclipse.persistence.jpa.rs.features.paging.PagingResponseBuilder; |
| import org.eclipse.persistence.jpa.rs.util.HrefHelper; |
| import org.eclipse.persistence.jpa.rs.util.JPARSLogger; |
| import org.eclipse.persistence.jpa.rs.util.StreamingOutputMarshaller; |
| import org.eclipse.persistence.queries.DatabaseQuery; |
| import org.eclipse.persistence.queries.ReportQuery; |
| |
| /** |
| * Base class for query resource. |
| * |
| * @author gonural |
| */ |
| public abstract class AbstractQueryResource extends AbstractResource { |
| private static final String CLASS_NAME = AbstractQueryResource.class.getName(); |
| |
| /** |
| * Named query update internal. |
| * |
| * @param version the version |
| * @param persistenceUnit the persistence unit |
| * @param queryName the name |
| * @param headers the http headers |
| * @param uriInfo the uri info |
| * @return the response |
| */ |
| @SuppressWarnings({ "rawtypes", "unchecked" }) |
| protected Response namedQueryUpdateInternal(String version, String persistenceUnit, String queryName, HttpHeaders headers, UriInfo uriInfo) { |
| JPARSLogger.entering(CLASS_NAME, "namedQueryUpdateInternal", new Object[] { "POST", version, persistenceUnit, queryName, uriInfo.getRequestUri().toASCIIString() }); |
| try { |
| PersistenceContext context = getPersistenceContext(persistenceUnit, null, uriInfo.getBaseUri(), version, null); |
| int result = context.queryExecuteUpdate(getMatrixParameters(uriInfo, persistenceUnit), queryName, getMatrixParameters(uriInfo, queryName), getQueryParameters(uriInfo)); |
| JAXBElement jaxbElement = new JAXBElement(new QName(ReservedWords.NO_ROUTE_JAXB_ELEMENT_LABEL), Integer.class, result); |
| return Response.ok(new StreamingOutputMarshaller(context, jaxbElement, headers.getAcceptableMediaTypes())).build(); |
| } catch (Exception ex) { |
| throw JPARSException.exceptionOccurred(ex); |
| } |
| } |
| |
| /** |
| * Executes given named query. |
| * |
| * @param version the version |
| * @param persistenceUnit the persistence unit |
| * @param queryName named query to execute |
| * @param headers the http headers |
| * @param uriInfo the uri info |
| * @return the response |
| */ |
| protected Response namedQueryInternal(String version, String persistenceUnit, String queryName, HttpHeaders headers, UriInfo uriInfo) { |
| JPARSLogger.entering(CLASS_NAME, "namedQueryInternal", 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 FeatureSet featureSet = context.getSupportedFeatureSet(); |
| |
| final Response response; |
| if (featureSet.isSupported(Feature.PAGING)) { |
| response = processPageableQuery(context, queryName, dbQuery, query, headers, uriInfo); |
| } else { |
| response = namedQueryResponse(context, queryName, dbQuery, query, headers, uriInfo, featureSet.getResponseBuilder(Feature.NO_PAGING)); |
| } |
| |
| return response; |
| } catch (Exception ex) { |
| throw JPARSException.exceptionOccurred(ex); |
| } |
| } |
| |
| protected Response buildQueryOptionsResponse(String version, String persistenceUnit, String queryName, HttpHeaders httpHeaders, UriInfo uriInfo) { |
| JPARSLogger.entering(CLASS_NAME, "buildQueryOptionsResponse", new Object[]{"GET", version, persistenceUnit, queryName, uriInfo.getRequestUri().toASCIIString()}); |
| final PersistenceContext context = getPersistenceContext(persistenceUnit, null, uriInfo.getBaseUri(), version, null); |
| |
| // We need to make sure that query with given name exists |
| final DatabaseQuery query = context.getServerSession().getQuery(queryName); |
| if (query == null) { |
| JPARSLogger.error(context.getSessionLog(), "jpars_could_not_find_query", new Object[] {queryName, persistenceUnit}); |
| throw JPARSException.responseCouldNotBeBuiltForNamedQueryRequest(queryName, context.getName()); |
| } |
| |
| final String linkValue = "<" + HrefHelper.buildQueryMetadataHref(context, queryName) + ">; rel=describedby"; |
| httpHeaders.getRequestHeaders().putSingle("Link", linkValue); |
| |
| return Response.ok() |
| .header("Link", linkValue) |
| .build(); |
| } |
| |
| private Response processPageableQuery(PersistenceContext context, String queryName, DatabaseQuery dbQuery, Query query, HttpHeaders headers, UriInfo uriInfo) { |
| final PageableQueryValidator validator = new PageableQueryValidator(context, queryName, uriInfo); |
| if (validator.isFeatureApplicable()) { |
| // Do pagination |
| query.setFirstResult(validator.getOffset()); |
| |
| // Extra one is added to the limit value to check are there more rows or not. |
| // It will be removed later on in the response builder. |
| query.setMaxResults(validator.getLimit() + 1); |
| |
| return namedQueryResponse(context, queryName, dbQuery, query, headers, uriInfo, new PagingResponseBuilder()); |
| } else { |
| // No pagination |
| return namedQueryResponse(context, queryName, dbQuery, query, headers, uriInfo, new SelfLinksResponseBuilder()); |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| private Response namedQueryResponse(PersistenceContext context, String queryName, DatabaseQuery dbQuery, Query query, HttpHeaders headers, UriInfo uriInfo, FeatureResponseBuilder responseBuilder) { |
| // We need to add limit and offset to query parameters because request builder reads it from there |
| final Map<String, Object> queryParams = getQueryParameters(uriInfo); |
| if (query.getMaxResults() != Integer.MAX_VALUE) { |
| queryParams.put(QueryParameters.JPARS_PAGING_LIMIT, String.valueOf(query.getMaxResults() - 1)); |
| queryParams.put(QueryParameters.JPARS_PAGING_OFFSET, String.valueOf(query.getFirstResult())); |
| } |
| |
| // Fields filtering |
| FieldsFilter fieldsFilter = null; |
| if (context.getSupportedFeatureSet().isSupported(Feature.FIELDS_FILTERING)) { |
| final FieldsFilteringValidator fieldsFilteringValidator = new FieldsFilteringValidator(uriInfo); |
| if (fieldsFilteringValidator.isFeatureApplicable()) { |
| fieldsFilter = fieldsFilteringValidator.getFilter(); |
| } |
| } |
| |
| if (dbQuery instanceof ReportQuery) { |
| // simple types selected : select u.name, u.age from employee |
| List<ReportItem> reportItems = ((ReportQuery) dbQuery).getItems(); |
| List<Object[]> queryResults = query.getResultList(); |
| if ((queryResults != null) && (!queryResults.isEmpty())) { |
| Object list = responseBuilder.buildReportQueryResponse(context, queryParams, queryResults, reportItems, uriInfo); |
| if (list != null) { |
| return Response.ok(new StreamingOutputMarshaller(context, list, headers.getAcceptableMediaTypes(), fieldsFilter)).build(); |
| } else { |
| // something is wrong with the descriptors |
| throw JPARSException.responseCouldNotBeBuiltForNamedQueryRequest(queryName, context.getName()); |
| } |
| } |
| return Response.ok(new StreamingOutputMarshaller(context, queryResults, headers.getAcceptableMediaTypes(), fieldsFilter)).build(); |
| } |
| |
| List<Object> results = query.getResultList(); |
| if (results != null) { |
| Object list = responseBuilder.buildReadAllQueryResponse(context, queryParams, results, uriInfo); |
| return Response.ok(new StreamingOutputMarshaller(context, list, headers.getAcceptableMediaTypes(), fieldsFilter)).build(); |
| } |
| return Response.ok(new StreamingOutputMarshaller(context, null, headers.getAcceptableMediaTypes(), fieldsFilter)).build(); |
| } |
| } |