001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.camel;
018
019 /**
020 * Used for defining if a given class is singleton or not.
021 * If the class is a Singleton, then a single instance will be shared. Because the class is shared, it
022 * should be treated as an immutable and be thread safe.
023 *
024 * @version $Revision: 752893 $
025 */
026 public interface IsSingleton {
027
028 /**
029 * Wheter this class supports being singleton or not.
030 *
031 * @return <tt>true</tt> to be a single shared instance, <tt>false</tt> to create new instances.
032 */
033 boolean isSingleton();
034
035 }