| /******************************************************************************* |
| * 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.api.access; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| 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.factory.ODataJPAFactory; |
| import org.apache.olingo.odata2.jpa.processor.api.jpql.JPQLContextType; |
| |
| /** |
| * The abstract class is a compilation of objects required for building specific |
| * instances of JPA Method Context. Extend this class to implement specific |
| * implementations of JPQL context types (Create,Update,Function). A JPA method |
| * Context is constructed from an OData request. Depending on OData |
| * CUD/FunctionImport operation performed on an Entity, a corresponding JPA |
| * method context object is built. The object thus built can be used for |
| * executing operations on JPA Entity/Custom processor objects. <br> |
| * A default implementation is provided by the library. |
| * |
| * |
| * @see org.apache.olingo.odata2.jpa.processor.api.access.JPAMethodContextView |
| * @see org.apache.olingo.odata2.jpa.processor.api.jpql.JPQLContextType |
| * |
| */ |
| |
| public abstract class JPAMethodContext implements JPAMethodContextView { |
| |
| protected Object enclosingObject; |
| protected ArrayList<JPAFunction> jpaFunction; |
| |
| @Override |
| /** |
| * The method returns list of JPA functions that can be executed on the |
| * enclosing object. |
| * |
| * @return an instance of list of JPA Function |
| */ |
| public Object getEnclosingObject() { |
| return enclosingObject; |
| } |
| |
| @Override |
| /** |
| * The method returns list of JPA functions that can be executed on the |
| * enclosing object. |
| * |
| * @return an instance of list of JPA Function |
| */ |
| public List<JPAFunction> getJPAFunctionList() { |
| return jpaFunction; |
| } |
| |
| protected void setEnclosingObject(final Object enclosingObject) { |
| this.enclosingObject = enclosingObject; |
| } |
| |
| protected void setJpaFunction(final List<JPAFunction> jpaFunctionList) { |
| jpaFunction = (ArrayList<JPAFunction>) jpaFunctionList; |
| } |
| |
| /** |
| * the method instantiates an instance of type JPAMethodContextBuilder. |
| * |
| * @param contextType |
| * indicates the type of JPQLContextBuilder to instantiate. |
| * @param resultsView |
| * is the OData request view |
| * @return {@link org.apache.olingo.odata2.jpa.processor.api.access.JPAMethodContext.JPAMethodContextBuilder} |
| * |
| * @throws ODataJPARuntimeException |
| */ |
| public final static JPAMethodContextBuilder |
| createBuilder(final JPQLContextType contextType, final Object resultsView) throws ODataJPARuntimeException { |
| return JPAMethodContextBuilder.create(contextType, resultsView); |
| } |
| |
| /** |
| * The abstract class is extended by specific JPA Method Context Builder to |
| * build JPA Method Context types. |
| * |
| * |
| * |
| */ |
| public static abstract class JPAMethodContextBuilder { |
| |
| /** |
| * Implement this method to build JPAMethodContext |
| * |
| * @return an instance of type JPAMethodContext |
| * @throws ODataJPAModelException |
| * @throws ODataJPARuntimeException |
| */ |
| public abstract JPAMethodContext build() throws ODataJPAModelException, ODataJPARuntimeException; |
| |
| protected JPAMethodContextBuilder() {} |
| |
| private static JPAMethodContextBuilder create(final JPQLContextType contextType, final Object resultsView) |
| throws ODataJPARuntimeException { |
| JPAMethodContextBuilder contextBuilder = |
| ODataJPAFactory.createFactory().getJPQLBuilderFactory().getJPAMethodContextBuilder(contextType); |
| |
| if (contextBuilder == null) { |
| throw ODataJPARuntimeException.throwException(ODataJPARuntimeException.ERROR_JPQLCTXBLDR_CREATE, null); |
| } |
| contextBuilder.setResultsView(resultsView); |
| return contextBuilder; |
| } |
| |
| protected abstract void setResultsView(Object resultsView); |
| } |
| } |