001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 * 019 */ 020 package org.apache.directory.shared.ldap.jndi; 021 022 023 import java.util.Hashtable; 024 025 import javax.naming.Context; 026 import javax.naming.NamingException; 027 import javax.naming.spi.InitialContextFactory; 028 029 030 /** 031 * A context factory that delegates calls to the underlying JNDI 032 * implementation of the JVM. 033 * 034 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 035 * @version $Rev$, $Date$ 036 */ 037 public class UniversalContextFactory implements InitialContextFactory 038 { 039 private static final String SUN_ICF_FQCN = "com.sun.jndi.ldap.LdapCtxFactory"; 040 private static final String IBM_ICF_FQCN = "com.ibm.jndi.LDAPCtxFactory"; 041 private static final String BEA_ICF_FQCN = SUN_ICF_FQCN; // JRocket might use SUN classes 042 private static final String ICF_FQCN; 043 044 045 static 046 { 047 // ------------------------------------------------------------------- 048 // for lack of a better approach we're just checking the JVM here and 049 // setting the ICF_FQCN based on that using a bunch of conditional tests 050 // ------------------------------------------------------------------- 051 052 String jvmVendor = System.getProperty( "java.vm.vendor" ); 053 054 if ( jvmVendor.equalsIgnoreCase( "SUN Microsystems, Inc." ) ) 055 { 056 ICF_FQCN = SUN_ICF_FQCN; 057 } 058 else if ( jvmVendor.equalsIgnoreCase( "BEA Systems, Inc." ) ) 059 { 060 ICF_FQCN = BEA_ICF_FQCN; 061 } 062 else if ( jvmVendor.equalsIgnoreCase( "IBM, Inc." ) ) 063 { 064 ICF_FQCN = IBM_ICF_FQCN; 065 } 066 else 067 { 068 ICF_FQCN = "Unknown"; 069 } 070 } 071 072 073 private final InitialContextFactory factory; 074 075 076 public UniversalContextFactory() throws InstantiationException, IllegalAccessException, ClassNotFoundException 077 { 078 factory = ( InitialContextFactory ) Class.forName( ICF_FQCN ).newInstance(); 079 } 080 081 082 public Context getInitialContext( Hashtable<?, ?> env ) throws NamingException 083 { 084 return factory.getInitialContext( env ); 085 } 086 }