| /* |
| * 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.xdbm; |
| |
| |
| import org.apache.directory.shared.ldap.cursor.Cursor; |
| |
| |
| /** |
| * A Cursor introducing new advance methods designed to reduce some |
| * inefficiencies encountered when scanning over Tuples. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| * @version $Rev$ |
| */ |
| public interface IndexCursor<V, E, ID> extends Cursor<IndexEntry<V, E, ID>> |
| { |
| /** |
| * An alternative to calling before(IndexEntry) which often may require |
| * wrapping an id and value in a newly created IndexEntry object that may |
| * be an unnecessary object creation. Some implementations may not |
| * support this operation and may throw an UnsupportedOperationEception. |
| * |
| * @param id the id for the entry |
| * @param indexValue the value to advance just before |
| * @throws Exception if there are faults performing this operation |
| */ |
| void beforeValue( ID id, V indexValue ) throws Exception; |
| |
| |
| /** |
| * An alternative to calling after(IndexEntry) which often may require |
| * wrapping an id and value in a newly created IndexEntry object that may |
| * be an unnecessary object creation. Some implementations may not |
| * support this operation and may throw an UnsupportedOperationEception. |
| * |
| * @param id the id for the entry |
| * @param indexValue the value to advance just after the last value |
| * @throws Exception if there are faults performing this operation |
| */ |
| void afterValue( ID id, V indexValue ) throws Exception; |
| } |