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 */ 020 021 022 package org.apache.directory.server.core.sp.java; 023 024 025 import java.lang.reflect.InvocationTargetException; 026 import java.lang.reflect.Method; 027 import java.util.ArrayList; 028 import java.util.List; 029 030 import javax.naming.NamingException; 031 032 import org.apache.directory.server.core.CoreSession; 033 import org.apache.directory.server.core.sp.StoredProcEngine; 034 import org.apache.directory.server.core.sp.StoredProcUtils; 035 import org.apache.directory.shared.ldap.entry.EntryAttribute; 036 import org.apache.directory.shared.ldap.entry.ServerEntry; 037 import org.apache.directory.shared.ldap.util.DirectoryClassUtils; 038 039 040 /** 041 * A {@link StoredProcEngine} implementation specific to Java stored procedures. 042 * 043 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 044 * @version $Rev$ $Date$ 045 */ 046 public class JavaStoredProcEngine implements StoredProcEngine 047 { 048 049 public static final String STORED_PROC_LANG_ID = "Java"; 050 051 private ServerEntry spUnit; 052 053 054 /* (non-Javadoc) 055 * @see org.apache.directory.server.core.sp.StoredProcEngine#invokeProcedure(OperationContext, String, Object[]) 056 */ 057 public Object invokeProcedure( CoreSession session, String fullSPName, Object[] spArgs ) throws Exception 058 { 059 EntryAttribute javaByteCode = spUnit.get( "javaByteCode" ); 060 String spName = StoredProcUtils.extractStoredProcName( fullSPName ); 061 String className = StoredProcUtils.extractStoredProcUnitName( fullSPName ); 062 063 ClassLoader loader = new LdapJavaStoredProcClassLoader( javaByteCode ); 064 Class<?> clazz; 065 066 try 067 { 068 clazz = loader.loadClass( className ); 069 } 070 catch ( ClassNotFoundException e ) 071 { 072 NamingException ne = new NamingException(); 073 ne.setRootCause( e ); 074 throw ne; 075 } 076 077 Class<?>[] types = getTypesFromValues( spArgs ); 078 079 Method proc; 080 try 081 { 082 proc = DirectoryClassUtils.getAssignmentCompatibleMethod( clazz, spName, types ); 083 } 084 catch ( NoSuchMethodException e ) 085 { 086 NamingException ne = new NamingException(); 087 ne.setRootCause( e ); 088 throw ne; 089 } 090 try 091 { 092 return proc.invoke( null, spArgs ); 093 } 094 catch ( IllegalArgumentException e ) 095 { 096 NamingException ne = new NamingException(); 097 ne.setRootCause( e ); 098 throw ne; 099 } 100 catch ( IllegalAccessException e ) 101 { 102 NamingException ne = new NamingException(); 103 ne.setRootCause( e ); 104 throw ne; 105 } 106 catch ( InvocationTargetException e ) 107 { 108 NamingException ne = new NamingException(); 109 ne.setRootCause( e ); 110 throw ne; 111 } 112 } 113 114 115 /* (non-Javadoc) 116 * @see org.apache.directory.server.core.sp.StoredProcEngine#getSPLangId() 117 */ 118 public String getSPLangId() 119 { 120 return STORED_PROC_LANG_ID; 121 } 122 123 124 /* (non-Javadoc) 125 * @see org.apache.directory.server.core.sp.StoredProcEngine#setSPUnitEntry(javax.naming.directory.Attributes) 126 */ 127 public void setSPUnitEntry( ServerEntry spUnit ) 128 { 129 this.spUnit = spUnit; 130 } 131 132 133 private Class<?>[] getTypesFromValues( Object[] values ) 134 { 135 List<Class<?>> types = new ArrayList<Class<?>>(); 136 137 for ( Object obj : values ) 138 { 139 types.add( obj.getClass() ); 140 } 141 142 return types.toArray( EMPTY_CLASS_ARRAY ); 143 } 144 145 private static Class<?>[] EMPTY_CLASS_ARRAY = new Class[ 0 ]; 146 147 }