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.codec; 021 022 import org.apache.directory.shared.ldap.message.spi.BinaryAttributeDetector; 023 import org.apache.directory.shared.ldap.message.spi.Provider; 024 import org.apache.directory.shared.ldap.message.spi.ProviderDecoder; 025 import org.apache.directory.shared.ldap.message.spi.ProviderEncoder; 026 import org.apache.directory.shared.ldap.message.spi.ProviderException; 027 028 029 /** 030 * The specific BER provider for LDAP. 031 * 032 * @author <a href="mailto:dev@directory.apache.org"> Apache Directory Project</a> 033 * $Rev: 903719 $ 034 */ 035 public class LdapProvider extends Provider 036 { 037 /** 038 * Creates an instance of a LDAP BER Provider. 039 */ 040 private LdapProvider() 041 { 042 super( "LDAP LDAP BER Provider", "Apache Directory Project" ); 043 } 044 045 /** the singleton LdapProvider instance */ 046 private static LdapProvider singleton; 047 048 049 /** 050 * Gets a handle on the singleton LdapProvider. Only one instance should 051 * have to be instantiated for the entire jvm. 052 * 053 * @return the singleton SnaccProvider instance 054 */ 055 public static synchronized Provider getProvider() 056 { 057 if ( singleton == null ) 058 { 059 singleton = new LdapProvider(); 060 } 061 062 return singleton; 063 } 064 065 066 /** 067 * Gets the encoder associated with this provider. 068 * 069 * @return the provider's encoder. 070 * @throws org.apache.directory.shared.ldap.message.spi.ProviderException 071 * if the provider or its encoder cannot be found 072 */ 073 public ProviderEncoder getEncoder() throws ProviderException 074 { 075 return new LdapEncoder( this ); 076 } 077 078 079 /** 080 * Gets the decoder associated with this provider. 081 * 082 * @return the provider's decoder. 083 * @throws org.apache.directory.shared.ldap.message.spi.ProviderException 084 * if the provider or its decoder cannot be found 085 */ 086 public ProviderDecoder getDecoder( BinaryAttributeDetector binaryAttributeDetector, int maxPDUSize ) throws ProviderException 087 { 088 return new LdapDecoder( this, binaryAttributeDetector, maxPDUSize ); 089 } 090 }