| /* |
| * 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.sp; |
| |
| |
| import org.apache.directory.server.core.entry.ServerEntry; |
| import org.apache.directory.server.core.entry.ServerEntryUtils; |
| import org.apache.directory.server.schema.registries.Registries; |
| import org.apache.directory.shared.ldap.constants.SchemaConstants; |
| import org.apache.directory.shared.ldap.name.LdapDN; |
| |
| import javax.naming.NamingEnumeration; |
| import javax.naming.NamingException; |
| import javax.naming.directory.SearchControls; |
| import javax.naming.directory.SearchResult; |
| import javax.naming.ldap.LdapContext; |
| import java.util.List; |
| |
| /** |
| * 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> |
| * @version $Rev$ $Date$ |
| */ |
| 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 rootDSE A handle on the root DSE to be used for searching the SP Unit over. |
| * @param fullSPName Full name of the Stored Procedure including the unit name. |
| * @return The entry associated with the SP Unit. |
| * @throws NamingException If the unit cannot be located or any other error occurs. |
| */ |
| public ServerEntry findStoredProcUnit( LdapContext rootDSE, String fullSPName, Registries registries ) throws NamingException |
| { |
| SearchControls controls = new SearchControls(); |
| controls.setReturningAttributes( SchemaConstants.ALL_USER_ATTRIBUTES_ARRAY ); |
| controls.setSearchScope( SearchControls.SUBTREE_SCOPE ); |
| String spUnitName = StoredProcUtils.extractStoredProcUnitName( fullSPName ); |
| String filter = "(storedProcUnitName=" + spUnitName + ")"; |
| NamingEnumeration<SearchResult> results = rootDSE.search( storedProcContainer, filter, controls ); |
| return ServerEntryUtils.toServerEntry( results.nextElement().getAttributes(), LdapDN.EMPTY_LDAPDN, registries ); |
| } |
| |
| |
| /** |
| * 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 NamingException If no {@link StoredProcEngine} that can be associated with the language identifier in spUnitEntry can be found. |
| */ |
| public StoredProcEngine getStoredProcEngineInstance( ServerEntry spUnitEntry ) throws NamingException |
| { |
| String spLangId = ( String ) spUnitEntry.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 e ) |
| { |
| NamingException ne = new NamingException(); |
| ne.setRootCause( e ); |
| throw ne; |
| } |
| catch ( IllegalAccessException e ) |
| { |
| NamingException ne = new NamingException(); |
| ne.setRootCause( e ); |
| throw ne; |
| } |
| |
| engine.setSPUnitEntry( spUnitEntry ); |
| return engine; |
| } |
| |
| } |
| |
| throw new NamingException( "Stored Procedure Language, " + spLangId + " is not supported." ); |
| |
| } |
| |
| } |