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1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one
3    *  or more contributor license agreements.  See the NOTICE file
4    *  distributed with this work for additional information
5    *  regarding copyright ownership.  The ASF licenses this file
6    *  to you under the Apache License, Version 2.0 (the
7    *  "License"); you may not use this file except in compliance
8    *  with the License.  You may obtain a copy of the License at
9    *  
10   *    http://www.apache.org/licenses/LICENSE-2.0
11   *  
12   *  Unless required by applicable law or agreed to in writing,
13   *  software distributed under the License is distributed on an
14   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   *  KIND, either express or implied.  See the License for the
16   *  specific language governing permissions and limitations
17   *  under the License. 
18   *  
19   */
20  package org.apache.directory.server.core.api.filtering;
21  
22  
23  import java.util.List;
24  
25  import org.apache.directory.api.ldap.model.cursor.Cursor;
26  import org.apache.directory.api.ldap.model.entry.Entry;
27  import org.apache.directory.server.core.api.interceptor.context.SearchOperationContext;
28  
29  
30  /**
31   * A wrapper on top of a Cursor used to filter entries we get from the backend.
32   *
33   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
34   */
35  public interface EntryFilteringCursor extends Cursor<Entry>
36  {
37      /**
38       * Adds an entry filter to this BaseEntryFilteringCursor at the very end of 
39       * the filter list.  EntryFilters are applied in the order of addition.
40       * 
41       * @param filter a filter to apply to the entries
42       * @return the result of {@link List#add(Object)}
43       */
44      boolean addEntryFilter( EntryFilter filter );
45  
46  
47      /**
48       * Gets an unmodifiable list of EntryFilters applied.
49       *
50       * @return an unmodifiable list of EntryFilters applied
51       */
52      List<EntryFilter> getEntryFilters();
53  
54  
55      /**
56       * @return the operationContext
57       */
58      SearchOperationContext getOperationContext();
59  }