Java tutorial
/* * Copyright 2015 herd contributors * * Licensed 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.finra.herd.dao.impl; import java.util.ArrayList; import java.util.List; import javax.persistence.Tuple; import javax.persistence.criteria.CriteriaBuilder; import javax.persistence.criteria.CriteriaQuery; import javax.persistence.criteria.Join; import javax.persistence.criteria.JoinType; import javax.persistence.criteria.Order; import javax.persistence.criteria.Path; import javax.persistence.criteria.Predicate; import javax.persistence.criteria.Root; import org.apache.commons.lang3.StringUtils; import org.springframework.stereotype.Repository; import org.finra.herd.dao.BusinessObjectDataNotificationRegistrationDao; import org.finra.herd.model.api.xml.BusinessObjectDataKey; import org.finra.herd.model.api.xml.BusinessObjectDataNotificationFilter; import org.finra.herd.model.api.xml.NotificationRegistrationKey; import org.finra.herd.model.jpa.BusinessObjectDataNotificationRegistrationEntity; import org.finra.herd.model.jpa.BusinessObjectDataNotificationRegistrationEntity_; import org.finra.herd.model.jpa.BusinessObjectDataStatusEntity; import org.finra.herd.model.jpa.BusinessObjectDataStatusEntity_; import org.finra.herd.model.jpa.BusinessObjectDefinitionEntity; import org.finra.herd.model.jpa.BusinessObjectDefinitionEntity_; import org.finra.herd.model.jpa.FileTypeEntity; import org.finra.herd.model.jpa.FileTypeEntity_; import org.finra.herd.model.jpa.NamespaceEntity; import org.finra.herd.model.jpa.NamespaceEntity_; import org.finra.herd.model.jpa.NotificationEventTypeEntity; import org.finra.herd.model.jpa.NotificationEventTypeEntity_; import org.finra.herd.model.jpa.NotificationRegistrationStatusEntity; import org.finra.herd.model.jpa.NotificationRegistrationStatusEntity_; @Repository public class BusinessObjectDataNotificationRegistrationDaoImpl extends AbstractNotificationRegistrationDao implements BusinessObjectDataNotificationRegistrationDao { @Override public BusinessObjectDataNotificationRegistrationEntity getBusinessObjectDataNotificationRegistrationByAltKey( NotificationRegistrationKey key) { // Create the criteria builder and the criteria. CriteriaBuilder builder = entityManager.getCriteriaBuilder(); CriteriaQuery<BusinessObjectDataNotificationRegistrationEntity> criteria = builder .createQuery(BusinessObjectDataNotificationRegistrationEntity.class); // The criteria root is the business object data notification registration entity. Root<BusinessObjectDataNotificationRegistrationEntity> businessObjectDataNotificationEntity = criteria .from(BusinessObjectDataNotificationRegistrationEntity.class); // Join to the other tables we can filter on. Join<BusinessObjectDataNotificationRegistrationEntity, NamespaceEntity> namespaceEntity = businessObjectDataNotificationEntity .join(BusinessObjectDataNotificationRegistrationEntity_.namespace); // Create the standard restrictions (i.e. the standard where clauses). Predicate queryRestriction = builder.equal(builder.upper(namespaceEntity.get(NamespaceEntity_.code)), key.getNamespace().toUpperCase()); queryRestriction = builder.and(queryRestriction, builder.equal( builder.upper(businessObjectDataNotificationEntity .get(BusinessObjectDataNotificationRegistrationEntity_.name)), key.getNotificationName().toUpperCase())); criteria.select(businessObjectDataNotificationEntity).where(queryRestriction); return executeSingleResultQuery(criteria, String.format( "Found more than one business object data notification registration with with parameters {namespace=\"%s\", notificationName=\"%s\"}.", key.getNamespace(), key.getNotificationName())); } @Override public List<NotificationRegistrationKey> getBusinessObjectDataNotificationRegistrationKeysByNamespace( String namespace) { // Create the criteria builder and a tuple style criteria query. CriteriaBuilder builder = entityManager.getCriteriaBuilder(); CriteriaQuery<Tuple> criteria = builder.createTupleQuery(); // The criteria root is the business object data notification registration. Root<BusinessObjectDataNotificationRegistrationEntity> businessObjectDataNotificationEntity = criteria .from(BusinessObjectDataNotificationRegistrationEntity.class); // Join to the other tables we can filter on. Join<BusinessObjectDataNotificationRegistrationEntity, NamespaceEntity> namespaceEntity = businessObjectDataNotificationEntity .join(BusinessObjectDataNotificationRegistrationEntity_.namespace); // Get the columns. Path<String> notificationRegistrationNamespaceColumn = namespaceEntity.get(NamespaceEntity_.code); Path<String> notificationRegistrationNameColumn = businessObjectDataNotificationEntity .get(BusinessObjectDataNotificationRegistrationEntity_.name); // Create the standard restrictions (i.e. the standard where clauses). Predicate queryRestriction = builder.equal(builder.upper(namespaceEntity.get(NamespaceEntity_.code)), namespace.toUpperCase()); // Add the select clause. criteria.multiselect(notificationRegistrationNamespaceColumn, notificationRegistrationNameColumn); // Add the where clause. criteria.where(queryRestriction); // Add the order by clause. criteria.orderBy(builder.asc(notificationRegistrationNameColumn)); // Run the query to get a list of tuples back. List<Tuple> tuples = entityManager.createQuery(criteria).getResultList(); // Populate the list of keys from the returned tuples. return getNotificationRegistrationKeys(tuples, notificationRegistrationNamespaceColumn, notificationRegistrationNameColumn); } @Override public List<NotificationRegistrationKey> getBusinessObjectDataNotificationRegistrationKeysByNotificationFilter( BusinessObjectDataNotificationFilter businessObjectDataNotificationFilter) { // Create the criteria builder and a tuple style criteria query. CriteriaBuilder builder = entityManager.getCriteriaBuilder(); CriteriaQuery<Tuple> criteria = builder.createTupleQuery(); // The criteria root is the business object data notification registration. Root<BusinessObjectDataNotificationRegistrationEntity> notificationRegistrationEntityRoot = criteria .from(BusinessObjectDataNotificationRegistrationEntity.class); // Join to the other tables we can filter on. Join<BusinessObjectDataNotificationRegistrationEntity, NamespaceEntity> notificationRegistrationNamespaceEntityJoin = notificationRegistrationEntityRoot .join(BusinessObjectDataNotificationRegistrationEntity_.namespace); Join<BusinessObjectDataNotificationRegistrationEntity, BusinessObjectDefinitionEntity> businessObjectDefinitionEntity = notificationRegistrationEntityRoot .join(BusinessObjectDataNotificationRegistrationEntity_.businessObjectDefinition); Join<BusinessObjectDefinitionEntity, NamespaceEntity> businessObjectDefinitionNamespaceEntity = businessObjectDefinitionEntity .join(BusinessObjectDefinitionEntity_.namespace); Join<BusinessObjectDataNotificationRegistrationEntity, FileTypeEntity> fileTypeEntity = notificationRegistrationEntityRoot .join(BusinessObjectDataNotificationRegistrationEntity_.fileType, JoinType.LEFT); // Get the columns. Path<String> notificationRegistrationNamespaceColumn = notificationRegistrationNamespaceEntityJoin .get(NamespaceEntity_.code); Path<String> notificationRegistrationNameColumn = notificationRegistrationEntityRoot .get(BusinessObjectDataNotificationRegistrationEntity_.name); // Create the standard restrictions (i.e. the standard where clauses). List<Predicate> predicates = new ArrayList<>(); predicates.add( builder.equal(builder.upper(businessObjectDefinitionNamespaceEntity.get(NamespaceEntity_.code)), businessObjectDataNotificationFilter.getNamespace().toUpperCase())); predicates.add(builder.equal( builder.upper(businessObjectDefinitionEntity.get(BusinessObjectDefinitionEntity_.name)), businessObjectDataNotificationFilter.getBusinessObjectDefinitionName().toUpperCase())); if (StringUtils.isNotBlank(businessObjectDataNotificationFilter.getBusinessObjectFormatUsage())) { predicates.add(builder.or( builder.isNull(notificationRegistrationEntityRoot .get(BusinessObjectDataNotificationRegistrationEntity_.usage)), builder.equal( builder.upper(notificationRegistrationEntityRoot .get(BusinessObjectDataNotificationRegistrationEntity_.usage)), businessObjectDataNotificationFilter.getBusinessObjectFormatUsage().toUpperCase()))); } if (StringUtils.isNotBlank(businessObjectDataNotificationFilter.getBusinessObjectFormatFileType())) { predicates.add(builder.or( builder.isNull(notificationRegistrationEntityRoot .get(BusinessObjectDataNotificationRegistrationEntity_.fileType)), builder.equal(builder.upper(fileTypeEntity.get(FileTypeEntity_.code)), businessObjectDataNotificationFilter.getBusinessObjectFormatFileType().toUpperCase()))); } // Add the select and where clauses to the query. criteria.multiselect(notificationRegistrationNamespaceColumn, notificationRegistrationNameColumn) .where(builder.and(predicates.toArray(new Predicate[predicates.size()]))); // Add the order by clause to the query. criteria.orderBy(builder.asc(notificationRegistrationNamespaceColumn), builder.asc(notificationRegistrationNameColumn)); // Run the query to get a list of tuples back. List<Tuple> tuples = entityManager.createQuery(criteria).getResultList(); // Populate the list of keys from the returned tuples. return getNotificationRegistrationKeys(tuples, notificationRegistrationNamespaceColumn, notificationRegistrationNameColumn); } @Override public List<BusinessObjectDataNotificationRegistrationEntity> getBusinessObjectDataNotificationRegistrations( String notificationEventTypeCode, BusinessObjectDataKey businessObjectDataKey, String newBusinessObjectDataStatus, String oldBusinessObjectDataStatus, String notificationRegistrationStatus) { // Create the criteria builder and the criteria. CriteriaBuilder builder = entityManager.getCriteriaBuilder(); CriteriaQuery<BusinessObjectDataNotificationRegistrationEntity> criteria = builder .createQuery(BusinessObjectDataNotificationRegistrationEntity.class); // The criteria root is the business object data notification registration entity. Root<BusinessObjectDataNotificationRegistrationEntity> businessObjectDataNotificationEntityRoot = criteria .from(BusinessObjectDataNotificationRegistrationEntity.class); // Join to the other tables we can filter on. Join<BusinessObjectDataNotificationRegistrationEntity, NamespaceEntity> namespaceEntityJoin = businessObjectDataNotificationEntityRoot .join(BusinessObjectDataNotificationRegistrationEntity_.namespace); Join<BusinessObjectDataNotificationRegistrationEntity, NotificationEventTypeEntity> notificationEventTypeEntityJoin = businessObjectDataNotificationEntityRoot .join(BusinessObjectDataNotificationRegistrationEntity_.notificationEventType); Join<BusinessObjectDataNotificationRegistrationEntity, BusinessObjectDefinitionEntity> businessObjectDefinitionEntityJoin = businessObjectDataNotificationEntityRoot .join(BusinessObjectDataNotificationRegistrationEntity_.businessObjectDefinition); Join<BusinessObjectDefinitionEntity, NamespaceEntity> businessObjectDefinitionNamespaceEntityJoin = businessObjectDefinitionEntityJoin .join(BusinessObjectDefinitionEntity_.namespace); Join<BusinessObjectDataNotificationRegistrationEntity, FileTypeEntity> fileTypeEntityJoin = businessObjectDataNotificationEntityRoot .join(BusinessObjectDataNotificationRegistrationEntity_.fileType, JoinType.LEFT); Join<BusinessObjectDataNotificationRegistrationEntity, BusinessObjectDataStatusEntity> newBusinessObjectDataStatusEntityJoin = businessObjectDataNotificationEntityRoot .join(BusinessObjectDataNotificationRegistrationEntity_.newBusinessObjectDataStatus, JoinType.LEFT); Join<BusinessObjectDataNotificationRegistrationEntity, BusinessObjectDataStatusEntity> oldBusinessObjectDataStatusEntityJoin = businessObjectDataNotificationEntityRoot .join(BusinessObjectDataNotificationRegistrationEntity_.oldBusinessObjectDataStatus, JoinType.LEFT); Join<BusinessObjectDataNotificationRegistrationEntity, NotificationRegistrationStatusEntity> notificationRegistrationStatusEntityJoin = businessObjectDataNotificationEntityRoot .join(BusinessObjectDataNotificationRegistrationEntity_.notificationRegistrationStatus); // Create the standard restrictions (i.e. the standard where clauses). List<Predicate> predicates = new ArrayList<>(); predicates.add( builder.equal(builder.upper(notificationEventTypeEntityJoin.get(NotificationEventTypeEntity_.code)), notificationEventTypeCode.toUpperCase())); predicates.add( builder.equal(builder.upper(businessObjectDefinitionNamespaceEntityJoin.get(NamespaceEntity_.code)), businessObjectDataKey.getNamespace().toUpperCase())); predicates.add(builder.equal( builder.upper(businessObjectDefinitionEntityJoin.get(BusinessObjectDefinitionEntity_.name)), businessObjectDataKey.getBusinessObjectDefinitionName().toUpperCase())); predicates.add(builder.or( builder.isNull(businessObjectDataNotificationEntityRoot .get(BusinessObjectDataNotificationRegistrationEntity_.usage)), builder.equal( builder.upper(businessObjectDataNotificationEntityRoot .get(BusinessObjectDataNotificationRegistrationEntity_.usage)), businessObjectDataKey.getBusinessObjectFormatUsage().toUpperCase()))); predicates.add(builder.or( builder.isNull(businessObjectDataNotificationEntityRoot .get(BusinessObjectDataNotificationRegistrationEntity_.fileType)), builder.equal(builder.upper(fileTypeEntityJoin.get(FileTypeEntity_.code)), businessObjectDataKey.getBusinessObjectFormatFileType().toUpperCase()))); predicates.add(builder.or( builder.isNull(businessObjectDataNotificationEntityRoot .get(BusinessObjectDataNotificationRegistrationEntity_.businessObjectFormatVersion)), builder.equal( businessObjectDataNotificationEntityRoot .get(BusinessObjectDataNotificationRegistrationEntity_.businessObjectFormatVersion), businessObjectDataKey.getBusinessObjectFormatVersion()))); predicates.add(builder.or( builder.isNull(businessObjectDataNotificationEntityRoot .get(BusinessObjectDataNotificationRegistrationEntity_.newBusinessObjectDataStatus)), builder.equal( builder.upper( newBusinessObjectDataStatusEntityJoin.get(BusinessObjectDataStatusEntity_.code)), newBusinessObjectDataStatus.toUpperCase()))); // Please note that old business object data status parameter value is null for a business object data registration event. predicates.add(builder.or( builder.isNull(businessObjectDataNotificationEntityRoot .get(BusinessObjectDataNotificationRegistrationEntity_.oldBusinessObjectDataStatus)), builder.equal( builder.upper( oldBusinessObjectDataStatusEntityJoin.get(BusinessObjectDataStatusEntity_.code)), oldBusinessObjectDataStatus == null ? null : oldBusinessObjectDataStatus.toUpperCase()))); predicates.add(builder.equal( builder.upper( notificationRegistrationStatusEntityJoin.get(NotificationRegistrationStatusEntity_.code)), notificationRegistrationStatus.toUpperCase())); // Order the results by namespace and notification name. List<Order> orderBy = new ArrayList<>(); orderBy.add(builder.asc(namespaceEntityJoin.get(NamespaceEntity_.code))); orderBy.add(builder.asc(businessObjectDataNotificationEntityRoot .get(BusinessObjectDataNotificationRegistrationEntity_.name))); // Add the clauses for the query. criteria.select(businessObjectDataNotificationEntityRoot) .where(builder.and(predicates.toArray(new Predicate[predicates.size()]))).orderBy(orderBy); // Execute the query and return the results. return entityManager.createQuery(criteria).getResultList(); } }