001    // Copyright 2004, 2005 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.hivemind.service.impl;
016    
017    import org.apache.hivemind.ServiceImplementationFactory;
018    import org.apache.hivemind.ServiceImplementationFactoryParameters;
019    
020    /**
021     * Implementation of {@link org.apache.hivemind.ServiceImplementationFactory} that can instantiate
022     * an object and then configure its properties.
023     * <p>
024     * Some thought has been given to using bytecode generation to create properties for messages,
025     * extension point id, and so forth. This is being avoided because it undermines the ability to test
026     * service implemenations as POJOs, outside the framework of HiveMind.
027     * <p>
028     * Instead the service is configured by means of the implementation's constructor and setter
029     * methods.
030     * 
031     * @author Howard Lewis Ship
032     */
033    public class BuilderFactory implements ServiceImplementationFactory
034    {
035        public Object createCoreServiceImplementation(
036                ServiceImplementationFactoryParameters factoryParameters)
037        {
038            BuilderParameter parameter = (BuilderParameter) factoryParameters.getFirstParameter();
039    
040            BuilderFactoryLogic logic = new BuilderFactoryLogic(factoryParameters, parameter);
041    
042            return logic.createService();
043        }
044    }