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
015package org.apache.tapestry5.ioc.services;
016
017import org.apache.tapestry5.ioc.Registry;
018
019/**
020 * Used in {@link ServiceActivity} to identify the state of the service in terms of its overall lifecycle.
021 */
022public enum Status
023{
024    /**
025     * A builtin service that exists before the {@link Registry} is constructed.
026     */
027    BUILTIN,
028
029    /**
030     * The service is defined in a module, but has not yet been referenced.
031     */
032    DEFINED,
033
034    /**
035     * A proxy has been created for the service, but no methods of the proxy have been invoked.
036     */
037    VIRTUAL,
038
039    /**
040     * A service implementation for the service has been created.
041     */
042    REAL
043}