| /* |
| * 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.openjpa.persistence.query; |
| |
| import org.apache.openjpa.kernel.Query; |
| import org.apache.openjpa.meta.MetaDataRepository; |
| import org.apache.openjpa.persistence.OpenJPAEntityManagerFactorySPI; |
| |
| /** |
| * The factory for QueryDefinition. |
| * |
| * |
| * @author Pinaki Poddar |
| * |
| */ |
| public class QueryBuilderImpl implements OpenJPAQueryBuilder { |
| private final OpenJPAEntityManagerFactorySPI _emf; |
| |
| public QueryBuilderImpl(OpenJPAEntityManagerFactorySPI emf) { |
| _emf = emf; |
| } |
| |
| /** |
| * Creates a QueryDefinition without a domain. |
| */ |
| public QueryDefinition createQueryDefinition() { |
| return new QueryDefinitionImpl(this); |
| } |
| |
| /** |
| * Creates a QueryDefinition with given class as domain. |
| */ |
| public DomainObject createQueryDefinition(Class root) { |
| return new QueryDefinitionImpl(this).addRoot(root); |
| } |
| |
| /** |
| * Creates a QueryDefinition that can be used a correlated subquery |
| * with the given path as domain. |
| */ |
| public DomainObject createSubqueryDefinition(PathExpression path) { |
| return new QueryDefinitionImpl(this).addSubqueryRoot(path); |
| } |
| |
| public String toJPQL(QueryDefinition query) { |
| MetaDataRepository repos = _emf.getConfiguration() |
| .getMetaDataRepositoryInstance(); |
| AliasContext ctx = new AliasContext(repos); |
| if (query instanceof AbstractDomainObject) |
| return ((AbstractDomainObject)query).getOwner().asExpression(ctx); |
| return ((QueryDefinitionImpl)query).asExpression(ctx); |
| } |
| |
| public QueryDefinition createQueryDefinition(String jpql) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| public QueryDefinition createQueryDefinition(Query jpql) { |
| throw new UnsupportedOperationException(); |
| } |
| } |