001    /*
002     * CDDL HEADER START
003     *
004     * The contents of this file are subject to the terms of the
005     * Common Development and Distribution License, Version 1.0 only
006     * (the "License").  You may not use this file except in compliance
007     * with the License.
008     *
009     * You can obtain a copy of the license at
010     * docs/licenses/cddl.txt
011     * or http://www.opensource.org/licenses/cddl1.php.
012     * See the License for the specific language governing permissions
013     * and limitations under the License.
014     *
015     * When distributing Covered Code, include this CDDL HEADER in each
016     * file and include the License file at
017     * docs/licenses/cddl.txt.  If applicable,
018     * add the following below this CDDL HEADER, with the fields enclosed
019     * by brackets "[]" replaced with your own identifying information:
020     *      Portions Copyright [yyyy] [name of copyright owner]
021     *
022     * CDDL HEADER END
023     *
024     *
025     *      Copyright 2012-2013 UnboundID Corp.
026     */
027    package com.unboundid.directory.sdk.http.types;
028    
029    
030    
031    import java.lang.reflect.Constructor;
032    
033    import com.unboundid.util.StaticUtils;
034    import com.unboundid.util.ThreadSafety;
035    import com.unboundid.util.ThreadSafetyLevel;
036    
037    
038    
039    /**
040     * This class provides a factory which may be used to obtain an of a
041     * {@link WebAppServerContext} object.
042     */
043    @ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
044    public final class WebAppServerContextFactory
045    {
046      /**
047       * Obtain an instance of a {@link WebAppServerContext} object.  Note that this
048       * may only be called by a web application running inside the server.
049       *
050       * @return  An instance of a {@code WebAppServerContext} object.
051       */
052      public static WebAppServerContext getServerContext()
053      {
054        try
055        {
056          final Class<?> genericProviderClass = Class.forName(
057               "com.unboundid.directory.sdk.impl.ServerContextProvider");
058          final Class<?> specificProviderClass = Class.forName(
059               "com.unboundid.directory.sdk.impl.WebAppServerContextProvider");
060    
061          final Constructor<?> providerClassConstructor =
062               specificProviderClass.getDeclaredConstructor();
063          providerClassConstructor.setAccessible(true);
064          final Object providerObject = providerClassConstructor.newInstance();
065    
066          final Class<?> implClass = Class.forName(
067               "com.unboundid.directory.sdk.impl.ServerContextImpl");
068    
069          final Constructor<?> constructor =
070               implClass.getConstructor(genericProviderClass);
071          constructor.setAccessible(true);
072    
073          final Object o = constructor.newInstance(providerObject);
074          return (WebAppServerContext) o;
075        }
076        catch (final Exception e)
077        {
078          throw new RuntimeException(
079               "Unable to obtain an instance of a WebAppServerContext:  " +
080                    StaticUtils.getExceptionMessage(e),
081               e);
082        }
083      }
084    }