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 
025     */
026    public interface IsSingleton {
027    
028        /**
029         * Whether 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    }