001    // Copyright 2007 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;
016    
017    import org.apache.hivemind.internal.RegistryInfrastructure;
018    
019    /**
020     * Wires a single property of an object with a service from the hivemind registry. 
021     * The implementations of this interface can use different strategies for 
022     * finding a matching service. 
023     * 
024     * @author Achim Huegen
025     */
026    public interface AutowiringStrategy
027    {
028        /**
029         * Strategy that searches for services by the type of a property.
030         */
031        public final static String BY_TYPE = "ByType";
032    
033        /**
034         * Autowire a single property. 
035         * @param registry  registry for lookup of services
036         * @param target  the target object
037         * @param propertyName  name of the property
038         * @return  true if the wiring has succeeded
039         */
040        public boolean autowireProperty(RegistryInfrastructure registry, Object target, String propertyName);
041    }