| /* |
| * 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.avltree; |
| |
| |
| import java.io.IOException; |
| |
| import org.apache.directory.api.ldap.model.constants.Loggers; |
| import org.apache.directory.api.ldap.model.cursor.AbstractCursor; |
| import org.apache.directory.api.ldap.model.cursor.CursorException; |
| import org.apache.directory.api.ldap.model.cursor.InvalidCursorPositionException; |
| import org.apache.directory.api.ldap.model.cursor.Tuple; |
| import org.apache.directory.api.ldap.model.exception.LdapException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * A cursor that converts SingletonOrOrderedSet objects in the value from a |
| * AvlTreeMap into Tuples with just K and V presuming that all the keys have |
| * no duplicates. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class AvlTreeMapNoDupsWrapperCursor<K, V> extends AbstractCursor<Tuple<K, V>> |
| { |
| /** A dedicated log for cursors */ |
| private static final Logger LOG_CURSOR = LoggerFactory.getLogger( Loggers.CURSOR_LOG.getName() ); |
| |
| /** Speedup for logs */ |
| private static final boolean IS_DEBUG = LOG_CURSOR.isDebugEnabled(); |
| |
| private final AvlSingletonOrOrderedSetCursor<K, V> wrapped; |
| private final Tuple<K, V> returnedTuple = new Tuple<>(); |
| |
| |
| public AvlTreeMapNoDupsWrapperCursor( AvlSingletonOrOrderedSetCursor<K, V> wrapped ) |
| { |
| if ( IS_DEBUG ) |
| { |
| LOG_CURSOR.debug( "Creating AvlTreeMapNoDupsWrapperCursor {}", this ); |
| } |
| |
| this.wrapped = wrapped; |
| } |
| |
| |
| public void afterKey( K key ) throws Exception |
| { |
| wrapped.afterKey( key ); |
| } |
| |
| |
| public void afterValue( K key, V value ) throws Exception |
| { |
| throw new UnsupportedOperationException( "This Cursor does not support duplicate keys." ); |
| } |
| |
| |
| public void beforeKey( K key ) throws Exception |
| { |
| wrapped.beforeKey( key ); |
| } |
| |
| |
| public void beforeValue( K key, V value ) throws Exception |
| { |
| throw new UnsupportedOperationException( "This Cursor does not support duplicate keys." ); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void after( Tuple<K, V> element ) throws LdapException, CursorException |
| { |
| wrapped.afterKey( element.getKey() ); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void afterLast() throws LdapException, CursorException |
| { |
| wrapped.afterLast(); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public boolean available() |
| { |
| return wrapped.available(); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void before( Tuple<K, V> element ) throws LdapException, CursorException |
| { |
| wrapped.beforeKey( element.getKey() ); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void beforeFirst() throws LdapException, CursorException |
| { |
| wrapped.beforeFirst(); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public boolean first() throws LdapException, CursorException |
| { |
| return wrapped.first(); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public Tuple<K, V> get() throws CursorException |
| { |
| if ( wrapped.available() ) |
| { |
| Tuple<K, SingletonOrOrderedSet<V>> tuple = wrapped.get(); |
| |
| if ( tuple.getValue().isOrderedSet() ) |
| { |
| tuple.getValue().getOrderedSet().printTree(); |
| } |
| |
| returnedTuple.setBoth( tuple.getKey(), tuple.getValue().getSingleton() ); |
| return returnedTuple; |
| } |
| |
| throw new InvalidCursorPositionException(); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public boolean last() throws LdapException, CursorException |
| { |
| return wrapped.last(); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public boolean next() throws LdapException, CursorException |
| { |
| return wrapped.next(); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public boolean previous() throws LdapException, CursorException |
| { |
| return wrapped.previous(); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public void close() throws IOException |
| { |
| if ( IS_DEBUG ) |
| { |
| LOG_CURSOR.debug( "Closing AvlTreeMapNoDupsWrapperCursor {}", this ); |
| } |
| |
| wrapped.close(); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public void close( Exception reason ) throws IOException |
| { |
| if ( IS_DEBUG ) |
| { |
| LOG_CURSOR.debug( "Closing AvlTreeMapNoDupsWrapperCursor {}", this ); |
| } |
| |
| wrapped.close( reason ); |
| } |
| } |