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.api.dsmlv2.request;
21
22
23 import org.apache.directory.api.asn1.DecoderException;
24 import org.apache.directory.api.i18n.I18n;
25
26
27 /**
28 * Not Filter Object to store the Not filter.
29 *
30 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
31 */
32 public class NotFilter extends ConnectorFilter
33 {
34 /**
35 * Subclass the addFilterMethod, as this is specific for a NotFilter (we
36 * cannot have more than one elements).
37 *
38 * @param filter The Filter to add
39 */
40 public void addFilter( Filter filter ) throws DecoderException
41 {
42 if ( filterSet != null )
43 {
44 throw new DecoderException( I18n.err( I18n.ERR_04057 ) );
45 }
46
47 super.addFilter( filter );
48 }
49
50
51 /**
52 * Get the NotFilter
53 *
54 * @return Returns the notFilter.
55 */
56 public Filter getNotFilter()
57 {
58 return filterSet.get( 0 );
59 }
60
61
62 /**
63 * Set the NotFilter
64 *
65 * @param notFilter The notFilter to set.
66 * @throws DecoderException If the filter is invalid
67 */
68 public void setNotFilter( Filter notFilter ) throws DecoderException
69 {
70 if ( filterSet != null )
71 {
72 throw new DecoderException( I18n.err( I18n.ERR_04057 ) );
73 }
74
75 super.addFilter( notFilter );
76 }
77
78
79 /**
80 * Return a string compliant with RFC 2254 representing a NOT filter
81 *
82 * @return The NOT filter string
83 */
84 public String toString()
85 {
86 StringBuffer sb = new StringBuffer();
87
88 sb.append( '!' ).append( super.toString() );
89
90 return sb.toString();
91 }
92 }