001    //  Copyright 2008 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.tapestry5.ioc;
016    
017    /**
018     * A callback used to create a service implementation.
019     */
020    public interface ServiceBuilder<T>
021    {
022        /**
023         * Construct the service.  A non-null object that implements the service interface must be returned.
024         *
025         * @param resources used to lookup dependencies or access resources
026         * @return the core service implementation
027         */
028        T buildService(ServiceResources resources);
029    }