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.util.jndi;
018    
019    import java.util.Hashtable;
020    
021    import javax.naming.Context;
022    import javax.naming.NamingException;
023    import javax.naming.spi.InitialContextFactory;
024    
025    import org.apache.camel.util.CastUtils;
026    
027    /**
028     * A factory of the Camel InitialContext which allows a Map to be used to create a
029     * JNDI context.
030     *
031     * @version $Revision: 835531 $
032     */
033    public class CamelInitialContextFactory implements InitialContextFactory {
034    
035        /**
036         * Creates a new context with the given environment.
037         *
038         * @param  environment  the environment, must not be <tt>null</tt>
039         * @return the created context.
040         * @throws NamingException is thrown if creation failed.
041         */
042        public Context getInitialContext(Hashtable<?, ?> environment) throws NamingException {
043            try {
044                return new JndiContext(CastUtils.cast(environment, String.class, Object.class));
045            } catch (Exception e) {
046                if (e instanceof NamingException) {
047                    throw (NamingException) e;
048                }
049                NamingException exception = new NamingException(e.getMessage());
050                exception.initCause(e);
051                throw exception;
052            }
053        }
054    }