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 * https://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.ldap.client.api.search;
21
22
23 /**
24 * This class is used to handle the Present filter (ie, attr =* )
25 *
26 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
27 */
28 /* No qualifier*/final class AttributeDescriptionFilter extends AbstractFilter
29 {
30 /** The attribute that must be prersent */
31 private String attribute;
32
33
34 /**
35 * Creates a new instance of AttributeDescription filter.
36 *
37 * @param attribute The attribute to set
38 */
39 private AttributeDescriptionFilter( String attribute )
40 {
41 this.attribute = attribute;
42 }
43
44
45 /**
46 * Creates a new AttributeDescription
47 *
48 * @param attribute The attribute that must be present
49 * @return The created PresenceFilter instance
50 */
51 public static AttributeDescriptionFilter present( String attribute )
52 {
53 return new AttributeDescriptionFilter( attribute );
54 }
55
56
57 /**
58 * {@inheritDoc}
59 */
60 @Override
61 public StringBuilder build( StringBuilder builder )
62 {
63 return builder.append( "(" ).append( attribute ).append( FilterOperator.PRESENT.operator() ).append( ")" );
64 }
65 }