| /* |
| * 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.partition; |
| |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| import javax.naming.InvalidNameException; |
| |
| import org.apache.directory.api.ldap.model.entry.Entry; |
| import org.apache.directory.api.ldap.model.exception.LdapException; |
| import org.apache.directory.api.ldap.model.exception.LdapInvalidDnException; |
| import org.apache.directory.api.ldap.model.exception.LdapOtherException; |
| import org.apache.directory.api.ldap.model.name.Dn; |
| import org.apache.directory.api.ldap.model.schema.SchemaManager; |
| import org.apache.directory.api.util.Strings; |
| import org.apache.directory.server.core.api.CacheService; |
| import org.apache.directory.server.core.api.DnFactory; |
| import org.apache.directory.server.i18n.I18n; |
| |
| |
| /** |
| * A {@link Partition} that helps users to implement their own partition. |
| * Most methods are implemented by default. Please look at the description of |
| * each methods for the detail of implementations. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public abstract class AbstractPartition implements Partition |
| { |
| /** <tt>true</tt> if and only if this partition is initialized. */ |
| protected boolean initialized; |
| |
| /** The partition ContextEntry */ |
| protected Entry contextEntry; |
| |
| /** The SchemaManager instance */ |
| protected SchemaManager schemaManager; |
| |
| /** The DnFactory to use to create DN */ |
| protected DnFactory dnFactory; |
| |
| /** The partition ID */ |
| protected String id; |
| |
| /** The root Dn for this partition */ |
| protected Dn suffixDn; |
| |
| /** the cache service */ |
| protected CacheService cacheService; |
| |
| /** the value of last successful add/update operation's CSN */ |
| private String contextCsn; |
| |
| /** a flag to detect the change in context CSN */ |
| protected volatile boolean ctxCsnChanged = false; |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void initialize() throws LdapException |
| { |
| if ( initialized ) |
| { |
| // Already initialized. |
| return; |
| } |
| |
| try |
| { |
| doInit(); |
| initialized = true; |
| } |
| catch ( Exception e ) |
| { |
| throw new LdapOtherException( e.getMessage(), e ); |
| } |
| finally |
| { |
| if ( !initialized ) |
| { |
| try |
| { |
| destroy(); |
| } |
| catch ( Exception e ) |
| { |
| throw new LdapOtherException( e.getMessage(), e ); |
| } |
| } |
| } |
| } |
| |
| |
| /** |
| * Override this method to put your initialization code. |
| */ |
| protected abstract void doDestroy() throws Exception; |
| |
| |
| /** |
| * Override this method to put your initialization code. |
| * @throws Exception |
| */ |
| protected abstract void doInit() throws InvalidNameException, Exception; |
| |
| |
| /** |
| * Calls {@link #doDestroy()} where you have to put your destroy code in, |
| * and clears default properties. Once this method is invoked, {@link #isInitialized()} |
| * will return <tt>false</tt>. |
| */ |
| public final void destroy() throws Exception |
| { |
| try |
| { |
| doDestroy(); |
| } |
| finally |
| { |
| initialized = false; |
| } |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public final boolean isInitialized() |
| { |
| return initialized; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void setSchemaManager( SchemaManager schemaManager ) |
| { |
| this.schemaManager = schemaManager; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public final SchemaManager getSchemaManager() |
| { |
| return schemaManager; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public final String getId() |
| { |
| return id; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void setId( String id ) |
| { |
| checkInitialized( "id" ); |
| this.id = id; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public final Dn getSuffixDn() |
| { |
| return suffixDn; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void setSuffixDn( Dn suffixDn ) throws LdapInvalidDnException |
| { |
| checkInitialized( "suffixDn" ); |
| |
| this.suffixDn = suffixDn; |
| |
| this.suffixDn.apply( schemaManager ); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void dumpIndex( OutputStream stream, String name ) throws IOException |
| { |
| stream.write( Strings.getBytesUtf8( "Nothing to dump for index " + name ) ); |
| } |
| |
| |
| /** |
| * Check that the operation is done on an initialized store |
| * @param property |
| */ |
| protected void checkInitialized( String property ) |
| { |
| if ( initialized ) |
| { |
| throw new IllegalStateException( I18n.err( I18n.ERR_576, property ) ); |
| } |
| } |
| |
| |
| /** |
| * @return the contextEntry |
| */ |
| public Entry getContextEntry() |
| { |
| return contextEntry; |
| } |
| |
| |
| /** |
| * @param contextEntry the contextEntry to set |
| */ |
| public void setContextEntry( Entry contextEntry ) |
| { |
| this.contextEntry = contextEntry; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public void setCacheService( CacheService cacheService ) |
| { |
| this.cacheService = cacheService; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public String getContextCsn() |
| { |
| return contextCsn; |
| } |
| |
| |
| /** |
| * Replaces the current context CSN with the given CSN value if they are not same and |
| * sets the ctxCsnChanged flag to true. |
| * |
| * @param csn the CSN value |
| */ |
| protected void setContextCsn( String csn ) |
| { |
| if( !csn.equals( contextCsn ) ) |
| { |
| contextCsn = csn; |
| ctxCsnChanged = true; |
| } |
| } |
| } |