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    import javax.naming.Context;
021    import javax.naming.NamingException;
022    import javax.naming.spi.InitialContextFactory;
023    
024    import org.apache.camel.util.CastUtils;
025    
026    /**
027     * A factory of the Camel {@link javax.naming.InitialContext} which allows a {@link java.util.Map} to be used to create a
028     * JNDI context.
029     * <p/>
030     * This implementation is prototype based, by creating a <b>new</b> context on each call to
031     * {@link #getInitialContext(java.util.Hashtable)}.
032     *
033     * @version 
034     */
035    public class CamelInitialContextFactory implements InitialContextFactory {
036    
037        /**
038         * Creates a new context with the given environment.
039         *
040         * @param  environment  the environment, must not be <tt>null</tt>
041         * @return the created context.
042         * @throws NamingException is thrown if creation failed.
043         */
044        public Context getInitialContext(Hashtable<?, ?> environment) throws NamingException {
045            try {
046                return new JndiContext(CastUtils.cast(environment, String.class, Object.class));
047            } catch (Exception e) {
048                if (e instanceof NamingException) {
049                    throw (NamingException) e;
050                }
051                NamingException exception = new NamingException(e.getMessage());
052                exception.initCause(e);
053                throw exception;
054            }
055        }
056    }