| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.directory.server.core.api.sp; |
| |
| |
| import java.util.List; |
| |
| import javax.naming.directory.SearchControls; |
| |
| import org.apache.directory.api.ldap.model.constants.SchemaConstants; |
| import org.apache.directory.api.ldap.model.cursor.Cursor; |
| import org.apache.directory.api.ldap.model.entry.Entry; |
| import org.apache.directory.api.ldap.model.entry.Value; |
| import org.apache.directory.api.ldap.model.exception.LdapException; |
| import org.apache.directory.api.ldap.model.filter.EqualityNode; |
| import org.apache.directory.api.ldap.model.filter.ExprNode; |
| import org.apache.directory.api.ldap.model.message.AliasDerefMode; |
| import org.apache.directory.api.ldap.model.message.SearchScope; |
| import org.apache.directory.api.ldap.model.name.Dn; |
| import org.apache.directory.api.ldap.model.schema.AttributeType; |
| import org.apache.directory.server.core.api.CoreSession; |
| import org.apache.directory.server.core.api.entry.ClonedServerEntry; |
| import org.apache.directory.server.i18n.I18n; |
| |
| |
| /** |
| * A Factory type class which holds a registry of supported {@link StoredProcEngineConfig}s. A container reference |
| * as the base for Stored Procedure storage on the DIT is also handled by this class. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class StoredProcExecutionManager |
| { |
| private final String storedProcContainer; |
| |
| private final List<StoredProcEngineConfig> storedProcEngineConfigs; |
| |
| |
| /** |
| * Creates a {@link StoredProcExecutionManager} instance. |
| * |
| * @param storedProcContainer The base of the DIT subtree used for storing stored procedure units. |
| * @param storedProcEngineConfigs A list of {@link StoredProcEngineConfig}s to register different {@link StoredProcEngine}s with this manager. |
| */ |
| public StoredProcExecutionManager( final String storedProcContainer, |
| final List<StoredProcEngineConfig> storedProcEngineConfigs ) |
| { |
| this.storedProcContainer = storedProcContainer; |
| this.storedProcEngineConfigs = storedProcEngineConfigs; |
| } |
| |
| |
| /** |
| * Finds and returns a stored procedure unit entry whose identifier name |
| * is extracted from fullSPName. |
| * |
| * @param session the session with a core directory service |
| * @param fullSPName Full name of the Stored Procedure including the unit name. |
| * @return The entry associated with the SP Unit. |
| * @throws Exception If the unit cannot be located or any other error occurs. |
| */ |
| public Entry findStoredProcUnit( CoreSession session, String fullSPName ) throws Exception |
| { |
| SearchControls controls = new SearchControls(); |
| controls.setReturningAttributes( SchemaConstants.ALL_USER_ATTRIBUTES_ARRAY ); |
| controls.setSearchScope( SearchControls.SUBTREE_SCOPE ); |
| String spUnitName = StoredProcUtils.extractStoredProcUnitName( fullSPName ); |
| |
| AttributeType storeProcUnitNamAT = session.getDirectoryService() |
| .getSchemaManager().lookupAttributeTypeRegistry( "storedProcUnitName" ); |
| ExprNode filter = new EqualityNode<String>( storeProcUnitNamAT, |
| new Value( storeProcUnitNamAT, spUnitName ) ); |
| Dn dn = session.getDirectoryService().getDnFactory().create( storedProcContainer ); |
| Cursor<Entry> results = session.search( dn, SearchScope.SUBTREE, filter, |
| AliasDerefMode.DEREF_ALWAYS ); |
| |
| if ( results.first() ) |
| { |
| Entry entry = results.get(); |
| results.close(); |
| |
| return entry; |
| } |
| |
| return null; |
| } |
| |
| |
| /** |
| * Initializes and returns a {@link StoredProcEngine} instance which can operate on spUnitEntry |
| * considering its specific stored procedure language. |
| * |
| * @param spUnitEntry The entry which a {@link StoredProcEngine} type will be mathched with respect to the language identifier. |
| * @return A {@link StoredProcEngine} associated with spUnitEntry. |
| * @throws org.apache.directory.api.ldap.model.exception.LdapException If no {@link StoredProcEngine} that can be associated with the language identifier in spUnitEntry can be found. |
| */ |
| public StoredProcEngine getStoredProcEngineInstance( Entry spUnitEntry ) throws LdapException |
| { |
| String spLangId = ( ( ClonedServerEntry ) spUnitEntry ).getOriginalEntry().get( "storedProcLangId" ) |
| .getString(); |
| |
| for ( StoredProcEngineConfig engineConfig : storedProcEngineConfigs ) |
| { |
| if ( engineConfig.getStoredProcLangId().equalsIgnoreCase( spLangId ) ) |
| { |
| Class<? extends StoredProcEngine> engineType = engineConfig.getStoredProcEngineType(); |
| StoredProcEngine engine; |
| |
| try |
| { |
| engine = engineType.newInstance(); |
| } |
| catch ( InstantiationException | IllegalAccessException e ) |
| { |
| LdapException ne = new LdapException( e.getMessage(), e ); |
| ne.initCause( e ); |
| throw ne; |
| } |
| |
| engine.setSPUnitEntry( ( Entry ) ( ( ClonedServerEntry ) spUnitEntry ).getOriginalEntry() ); |
| return engine; |
| } |
| |
| } |
| |
| throw new LdapException( I18n.err( I18n.ERR_294, spLangId ) ); |
| |
| } |
| |
| } |