| /******************************************************************************* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| ******************************************************************************/ |
| package org.apache.olingo.odata2.jpa.processor.core.access.data; |
| |
| import java.io.InputStream; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Map; |
| |
| import javax.persistence.EntityManager; |
| import javax.persistence.PersistenceException; |
| import javax.persistence.Query; |
| |
| import org.apache.olingo.odata2.api.commons.InlineCount; |
| import org.apache.olingo.odata2.api.edm.EdmEntitySet; |
| import org.apache.olingo.odata2.api.edm.EdmEntityType; |
| import org.apache.olingo.odata2.api.edm.EdmException; |
| import org.apache.olingo.odata2.api.edm.EdmMapping; |
| import org.apache.olingo.odata2.api.edm.EdmMultiplicity; |
| import org.apache.olingo.odata2.api.ep.entry.ODataEntry; |
| import org.apache.olingo.odata2.api.exception.ODataBadRequestException; |
| import org.apache.olingo.odata2.api.uri.UriInfo; |
| import org.apache.olingo.odata2.api.uri.info.DeleteUriInfo; |
| import org.apache.olingo.odata2.api.uri.info.GetEntityCountUriInfo; |
| import org.apache.olingo.odata2.api.uri.info.GetEntityLinkUriInfo; |
| import org.apache.olingo.odata2.api.uri.info.GetEntitySetCountUriInfo; |
| import org.apache.olingo.odata2.api.uri.info.GetEntitySetLinksUriInfo; |
| import org.apache.olingo.odata2.api.uri.info.GetEntitySetUriInfo; |
| import org.apache.olingo.odata2.api.uri.info.GetEntityUriInfo; |
| import org.apache.olingo.odata2.api.uri.info.GetFunctionImportUriInfo; |
| import org.apache.olingo.odata2.api.uri.info.PostUriInfo; |
| import org.apache.olingo.odata2.api.uri.info.PutMergePatchUriInfo; |
| import org.apache.olingo.odata2.jpa.processor.api.ODataJPAContext; |
| import org.apache.olingo.odata2.jpa.processor.api.ODataJPATombstoneContext; |
| import org.apache.olingo.odata2.jpa.processor.api.ODataJPATombstoneEntityListener; |
| import org.apache.olingo.odata2.jpa.processor.api.ODataJPATransaction; |
| import org.apache.olingo.odata2.jpa.processor.api.access.JPAFunction; |
| import org.apache.olingo.odata2.jpa.processor.api.access.JPAMethodContext; |
| import org.apache.olingo.odata2.jpa.processor.api.access.JPAProcessor; |
| import org.apache.olingo.odata2.jpa.processor.api.exception.ODataJPAModelException; |
| import org.apache.olingo.odata2.jpa.processor.api.exception.ODataJPARuntimeException; |
| import org.apache.olingo.odata2.jpa.processor.api.jpql.JPQLContextType; |
| import org.apache.olingo.odata2.jpa.processor.api.model.JPAEdmMapping; |
| import org.apache.olingo.odata2.jpa.processor.core.ODataEntityParser; |
| import org.apache.olingo.odata2.jpa.processor.core.access.data.JPAPage.JPAPageBuilder; |
| import org.apache.olingo.odata2.jpa.processor.core.access.data.JPAQueryBuilder.JPAQueryInfo; |
| |
| public class JPAProcessorImpl implements JPAProcessor { |
| |
| private static final String DELTATOKEN = "!deltatoken"; |
| ODataJPAContext oDataJPAContext; |
| EntityManager em; |
| |
| public JPAProcessorImpl(final ODataJPAContext oDataJPAContext) { |
| this.oDataJPAContext = oDataJPAContext; |
| em = oDataJPAContext.getEntityManager(); |
| } |
| |
| /* Process Function Import Request */ |
| @SuppressWarnings("unchecked") |
| @Override |
| public List<Object> process(final GetFunctionImportUriInfo uriParserResultView) |
| throws ODataJPAModelException, ODataJPARuntimeException { |
| |
| JPAMethodContext jpaMethodContext = JPAMethodContext.createBuilder( |
| JPQLContextType.FUNCTION, uriParserResultView).build(); |
| |
| List<Object> resultObj = null; |
| |
| try { |
| |
| JPAFunction jpaFunction = jpaMethodContext.getJPAFunctionList() |
| .get(0); |
| Method method = jpaFunction.getFunction(); |
| Object[] args = jpaFunction.getArguments(); |
| |
| if (uriParserResultView.getFunctionImport().getReturnType() |
| .getMultiplicity().equals(EdmMultiplicity.MANY)) { |
| |
| resultObj = (List<Object>) method.invoke( |
| jpaMethodContext.getEnclosingObject(), args); |
| } else { |
| resultObj = new ArrayList<Object>(); |
| Object result = method.invoke( |
| jpaMethodContext.getEnclosingObject(), args); |
| resultObj.add(result); |
| } |
| |
| } catch (EdmException e) { |
| throw ODataJPARuntimeException |
| .throwException(ODataJPARuntimeException.GENERAL |
| .addContent(e.getMessage()), e); |
| } catch (IllegalAccessException e) { |
| throw ODataJPARuntimeException |
| .throwException(ODataJPARuntimeException.GENERAL |
| .addContent(e.getMessage()), e); |
| } catch (IllegalArgumentException e) { |
| throw ODataJPARuntimeException |
| .throwException(ODataJPARuntimeException.GENERAL |
| .addContent(e.getMessage()), e); |
| } catch (InvocationTargetException e) { |
| throw ODataJPARuntimeException |
| .throwException(ODataJPARuntimeException.GENERAL |
| .addContent(e.getTargetException().getMessage()), e.getTargetException()); |
| } |
| |
| return resultObj; |
| } |
| |
| /* Process Get Entity Set Request (Query) */ |
| @Override |
| public List<Object> process(final GetEntitySetUriInfo uriParserResultView) |
| throws ODataJPAModelException, ODataJPARuntimeException { |
| |
| List<Object> result = null; |
| if (uriParserResultView.getFunctionImport() != null) { |
| return (List<Object>) process((GetFunctionImportUriInfo) uriParserResultView); |
| } |
| |
| InlineCount inlineCount = uriParserResultView.getInlineCount(); |
| Integer top = uriParserResultView.getTop() == null ? 1 : uriParserResultView.getTop().intValue(); |
| boolean hasNoAllPages = inlineCount == null ? true : !inlineCount.equals(InlineCount.ALLPAGES); |
| if (top.intValue() == 0 && hasNoAllPages) { |
| return new ArrayList<Object>(); |
| } |
| |
| try { |
| JPAEdmMapping mapping = (JPAEdmMapping) uriParserResultView.getTargetEntitySet().getEntityType().getMapping(); |
| JPAQueryBuilder queryBuilder = new JPAQueryBuilder(oDataJPAContext); |
| JPAQueryInfo queryInfo = queryBuilder.build(uriParserResultView); |
| Query query = queryInfo.getQuery(); |
| ODataJPATombstoneEntityListener listener = |
| queryBuilder.getODataJPATombstoneEntityListener((UriInfo) uriParserResultView); |
| Map<String, String> customQueryOptions = uriParserResultView.getCustomQueryOptions(); |
| String deltaToken = null; |
| if (customQueryOptions != null) { |
| deltaToken = uriParserResultView.getCustomQueryOptions().get(DELTATOKEN); |
| } |
| if (deltaToken != null) { |
| ODataJPATombstoneContext.setDeltaToken(deltaToken); |
| } |
| if (listener != null && (!queryInfo.isTombstoneQuery() && listener.isTombstoneSupported())) { |
| query.getResultList(); |
| List<Object> deltaResult = |
| (List<Object>) ODataJPATombstoneContext.getDeltaResult(((EdmMapping) mapping).getInternalName()); |
| result = handlePaging(deltaResult, uriParserResultView); |
| } else { |
| result = handlePaging(query, uriParserResultView); |
| } |
| if (listener != null && listener.isTombstoneSupported()) { |
| ODataJPATombstoneContext.setDeltaToken(listener.generateDeltaToken((List<Object>) result, query)); |
| } |
| if(InlineCount.ALLPAGES.equals(uriParserResultView.getInlineCount())){ |
| queryBuilder.getCount(uriParserResultView); |
| } |
| return result == null ? new ArrayList<Object>() : result; |
| } catch (EdmException e) { |
| throw ODataJPARuntimeException.throwException( |
| ODataJPARuntimeException.ERROR_JPQL_QUERY_CREATE, e); |
| } catch (InstantiationException e) { |
| throw ODataJPARuntimeException.throwException( |
| ODataJPARuntimeException.ERROR_JPQL_QUERY_CREATE, e); |
| } catch (IllegalAccessException e) { |
| throw ODataJPARuntimeException.throwException( |
| ODataJPARuntimeException.ERROR_JPQL_QUERY_CREATE, e); |
| } |
| } |
| |
| /* Process Get Entity Request (Read) */ |
| @Override |
| public <T> Object process(GetEntityUriInfo uriParserResultView) |
| throws ODataJPAModelException, ODataJPARuntimeException { |
| return readEntity(new JPAQueryBuilder(oDataJPAContext).build(uriParserResultView)); |
| } |
| |
| /* Process $count for Get Entity Set Request */ |
| @Override |
| public long process(final GetEntitySetCountUriInfo resultsView) |
| throws ODataJPAModelException, ODataJPARuntimeException { |
| |
| JPAQueryBuilder queryBuilder = new JPAQueryBuilder(oDataJPAContext); |
| Query query = queryBuilder.build(resultsView); |
| List<?> resultList = query.getResultList(); |
| if (resultList != null && resultList.size() == 1) { |
| return Long.valueOf(resultList.get(0).toString()); |
| } |
| |
| return 0; |
| } |
| |
| /* Process $count for Get Entity Request */ |
| @Override |
| public long process(final GetEntityCountUriInfo resultsView) throws ODataJPAModelException, ODataJPARuntimeException { |
| |
| JPAQueryBuilder queryBuilder = new JPAQueryBuilder(oDataJPAContext); |
| Query query = queryBuilder.build(resultsView); |
| List<?> resultList = query.getResultList(); |
| if (resultList != null && resultList.size() == 1) { |
| return Long.valueOf(resultList.get(0).toString()); |
| } |
| return 0; |
| } |
| |
| /* Process Create Entity Request */ |
| @Override |
| public Object process(final PostUriInfo createView, final InputStream content, |
| final String requestedContentType) throws ODataJPAModelException, |
| ODataJPARuntimeException { |
| return processCreate(createView, content, null, requestedContentType); |
| } |
| |
| @Override |
| public Object process(final PostUriInfo createView, final Map<String, Object> content) |
| throws ODataJPAModelException, ODataJPARuntimeException { |
| return processCreate(createView, null, content, null); |
| } |
| |
| /* Process Update Entity Request */ |
| @Override |
| public Object process(final PutMergePatchUriInfo updateView, |
| final InputStream content, final String requestContentType) |
| throws ODataJPAModelException, ODataJPARuntimeException { |
| return processUpdate(updateView, content, null, requestContentType); |
| } |
| |
| @Override |
| public Object process(final PutMergePatchUriInfo updateView, final Map<String, Object> content) |
| throws ODataJPAModelException, ODataJPARuntimeException { |
| return processUpdate(updateView, null, content, null); |
| } |
| |
| /* Process Delete Entity Request */ |
| @Override |
| public Object process(DeleteUriInfo uriParserResultView, final String contentType) |
| throws ODataJPAModelException, ODataJPARuntimeException { |
| if (uriParserResultView instanceof DeleteUriInfo) { |
| if (((UriInfo) uriParserResultView).isLinks()) { |
| return deleteLink(uriParserResultView); |
| } |
| } |
| Object selectedObject = readEntity(new JPAQueryBuilder(oDataJPAContext).build(uriParserResultView)); |
| if (selectedObject != null) { |
| try{ |
| boolean isLocalTransaction = setTransaction(); |
| em.remove(selectedObject); |
| em.flush(); |
| if (isLocalTransaction) { |
| oDataJPAContext.getODataJPATransaction().commit(); |
| } |
| } catch(PersistenceException e){ |
| em.getTransaction().rollback(); |
| throw ODataJPARuntimeException.throwException( |
| ODataJPARuntimeException.ERROR_JPQL_DELETE_REQUEST, e); |
| } |
| } |
| return selectedObject; |
| } |
| |
| /* Process Get Entity Link Request */ |
| @Override |
| public Object process(final GetEntityLinkUriInfo uriParserResultView) |
| throws ODataJPAModelException, ODataJPARuntimeException { |
| |
| return this.process((GetEntityUriInfo) uriParserResultView); |
| } |
| |
| /* Process Get Entity Set Link Request */ |
| @Override |
| public List<Object> process(final GetEntitySetLinksUriInfo uriParserResultView) |
| throws ODataJPAModelException, ODataJPARuntimeException { |
| return this.process((GetEntitySetUriInfo) uriParserResultView); |
| } |
| |
| @Override |
| public void process(final PostUriInfo uriInfo, |
| final InputStream content, final String requestContentType, final String contentType) |
| throws ODataJPARuntimeException, ODataJPAModelException { |
| JPALink link = new JPALink(oDataJPAContext); |
| link.create(uriInfo, content, requestContentType, contentType); |
| link.save(); |
| } |
| |
| @Override |
| public void process(final PutMergePatchUriInfo putUriInfo, |
| final InputStream content, final String requestContentType, final String contentType) |
| throws ODataJPARuntimeException, ODataJPAModelException { |
| |
| JPALink link = new JPALink(oDataJPAContext); |
| link.update(putUriInfo, content, requestContentType, contentType); |
| link.save(); |
| |
| } |
| |
| /* Common method for Read and Delete */ |
| private Object readEntity(final Query query) throws ODataJPARuntimeException { |
| Object selectedObject = null; |
| @SuppressWarnings("rawtypes") |
| final List resultList = query.getResultList(); |
| if (!resultList.isEmpty()) { |
| selectedObject = resultList.get(0); |
| } |
| return selectedObject; |
| } |
| |
| private Object processCreate(final PostUriInfo createView, final InputStream content, |
| final Map<String, Object> properties, |
| final String requestedContentType) throws ODataJPAModelException, |
| ODataJPARuntimeException { |
| try { |
| final EdmEntitySet oDataEntitySet = createView.getTargetEntitySet(); |
| final EdmEntityType oDataEntityType = oDataEntitySet.getEntityType(); |
| final JPAEntity virtualJPAEntity = new JPAEntity(oDataEntityType, oDataEntitySet, oDataJPAContext); |
| Object jpaEntity = null; |
| |
| if (content != null) { |
| final ODataEntityParser oDataEntityParser = new ODataEntityParser(oDataJPAContext); |
| final ODataEntry oDataEntry = |
| oDataEntityParser.parseEntry(oDataEntitySet, content, requestedContentType, false); |
| virtualJPAEntity.create(oDataEntry); |
| } else if (properties != null) { |
| virtualJPAEntity.create(properties); |
| } else { |
| return null; |
| } |
| |
| boolean isLocalTransaction = setTransaction(); |
| jpaEntity = virtualJPAEntity.getJPAEntity(); |
| |
| em.persist(jpaEntity); |
| if (em.contains(jpaEntity)) { |
| if (isLocalTransaction) { |
| oDataJPAContext.getODataJPATransaction().commit(); |
| } |
| return jpaEntity; |
| } |
| } catch (ODataBadRequestException e) { |
| throw ODataJPARuntimeException.throwException( |
| ODataJPARuntimeException.ERROR_JPQL_QUERY_CREATE, e); |
| } catch (EdmException e) { |
| throw ODataJPARuntimeException.throwException( |
| ODataJPARuntimeException.ERROR_JPQL_QUERY_CREATE, e); |
| } |
| return null; |
| } |
| |
| private <T> Object processUpdate(PutMergePatchUriInfo updateView, |
| final InputStream content, final Map<String, Object> properties, final String requestContentType) |
| throws ODataJPAModelException, ODataJPARuntimeException { |
| Object jpaEntity = null; |
| boolean isLocalTransaction = false; |
| try { |
| isLocalTransaction = setTransaction(); |
| jpaEntity = readEntity(new JPAQueryBuilder(oDataJPAContext).build(updateView)); |
| |
| if (jpaEntity == null) { |
| throw ODataJPARuntimeException |
| .throwException(ODataJPARuntimeException.RESOURCE_NOT_FOUND, null); |
| } |
| |
| final EdmEntitySet oDataEntitySet = updateView.getTargetEntitySet(); |
| final EdmEntityType oDataEntityType = oDataEntitySet.getEntityType(); |
| final JPAEntity virtualJPAEntity = new JPAEntity(oDataEntityType, oDataEntitySet, oDataJPAContext); |
| virtualJPAEntity.setJPAEntity(jpaEntity); |
| if (content != null) { |
| final ODataEntityParser oDataEntityParser = new ODataEntityParser(oDataJPAContext); |
| ODataEntry oDataEntry; |
| oDataEntry = oDataEntityParser.parseEntry(oDataEntitySet, content, requestContentType, false); |
| virtualJPAEntity.update(oDataEntry); |
| } else if (properties != null) { |
| virtualJPAEntity.update(properties); |
| } else { |
| return null; |
| } |
| em.flush(); |
| if (isLocalTransaction) { |
| oDataJPAContext.getODataJPATransaction().commit(); |
| } |
| } catch (ODataBadRequestException e) { |
| throw ODataJPARuntimeException.throwException( |
| ODataJPARuntimeException.ERROR_JPQL_QUERY_CREATE, e); |
| } catch (EdmException e) { |
| throw ODataJPARuntimeException.throwException( |
| ODataJPARuntimeException.ERROR_JPQL_QUERY_CREATE, e); |
| } catch (PersistenceException e) { |
| em.getTransaction().rollback(); |
| throw ODataJPARuntimeException.throwException( |
| ODataJPARuntimeException.ERROR_JPQL_QUERY_CREATE, e); |
| } finally { |
| if (isLocalTransaction && oDataJPAContext.getODataJPATransaction().isActive()) { |
| oDataJPAContext.getODataJPATransaction().rollback(); |
| } |
| } |
| return jpaEntity; |
| } |
| |
| private Object deleteLink(final DeleteUriInfo uriParserResultView) throws ODataJPARuntimeException { |
| JPALink link = new JPALink(oDataJPAContext); |
| link.delete(uriParserResultView); |
| link.save(); |
| return link.getTargetJPAEntity(); |
| } |
| |
| private List<Object> handlePaging(final List<Object> result, final GetEntitySetUriInfo uriParserResultView) { |
| if (result == null) { |
| return null; |
| } |
| JPAPageBuilder pageBuilder = new JPAPageBuilder(); |
| pageBuilder.pageSize(oDataJPAContext.getPageSize()) |
| .entities(result) |
| .skipToken(uriParserResultView.getSkipToken()); |
| |
| // $top/$skip with $inlinecount case handled in response builder to avoid multiple DB call |
| if (uriParserResultView.getSkip() != null) { |
| pageBuilder.skip(uriParserResultView.getSkip().intValue()); |
| } |
| |
| if (uriParserResultView.getTop() != null) { |
| pageBuilder.top(uriParserResultView.getTop().intValue()); |
| } |
| |
| JPAPage page = pageBuilder.build(); |
| oDataJPAContext.setPaging(page); |
| |
| return page.getPagedEntities(); |
| } |
| |
| private List<Object> handlePaging(final Query query, final GetEntitySetUriInfo uriParserResultView) { |
| |
| JPAPageBuilder pageBuilder = new JPAPageBuilder(); |
| pageBuilder.pageSize(oDataJPAContext.getPageSize()) |
| .query(query) |
| .skipToken(uriParserResultView.getSkipToken()); |
| |
| // $top/$skip with $inlinecount case handled in response builder to avoid multiple DB call |
| if (uriParserResultView.getSkip() != null) { |
| pageBuilder.skip(uriParserResultView.getSkip().intValue()); |
| } |
| |
| if (uriParserResultView.getTop() != null) { |
| pageBuilder.top(uriParserResultView.getTop().intValue()); |
| } |
| |
| JPAPage page = pageBuilder.build(); |
| oDataJPAContext.setPaging(page); |
| |
| return page.getPagedEntities(); |
| |
| } |
| |
| private boolean setTransaction() { |
| ODataJPATransaction transaction = oDataJPAContext.getODataJPATransaction(); |
| if (!transaction.isActive()) { |
| transaction.begin(); |
| return true; |
| } |
| return false; |
| } |
| } |
