001// Copyright 2006, 2007, 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
015package org.apache.tapestry5.ioc;
016
017import org.slf4j.Logger;
018
019/**
020 * Contains resources that may be provided to a service when it initializes, which includes other services defined in
021 * the registry. ServiceResources provides access to other services (it extends
022 * {@link org.apache.tapestry5.ioc.ObjectLocator}).
023 */
024public interface ServiceResources extends ObjectLocator, AnnotationAccess
025{
026    /**
027     * Returns the fully qualified id of the service.
028     */
029    String getServiceId();
030
031    /**
032     * Returns the service interface implemented by the service.
033     */
034    Class getServiceInterface();
035
036    /**
037     * Returns a Logger appropriate for logging messages. This includes debug level messages about the creation and
038     * configuration of the underlying service, as well as debug, warning, or error level messages from the service
039     * itself. Often service interceptors will make use of the service's logger.
040     */
041    Logger getLogger();
042
043    /**
044     * Returns an object that can be used to track operations related to constructing, configuring, decorating and
045     * initializing the service.
046     */
047    OperationTracker getTracker();
048
049    /**
050     * Returns null (as of 5.3).
051     * 
052     * @since 5.2.0
053     * @deprecated Deprecated in 5.3 with no replacement. May be removed in 5.4.
054     */
055    Class getImplementationClass();
056}