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