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.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 private AttributeDescriptionFilter( String attribute ) 38 { 39 this.attribute = attribute; 40 } 41 42 43 /** 44 * Creates a new AttributeDescription 45 * 46 * @param attribute The attribute that must be present 47 * @return The created PresenceFilter instance 48 */ 49 public static AttributeDescriptionFilter present( String attribute ) 50 { 51 return new AttributeDescriptionFilter( attribute ); 52 } 53 54 55 /** 56 * {@inheritDoc} 57 */ 58 @Override 59 public StringBuilder build( StringBuilder builder ) 60 { 61 return builder.append( "(" ).append( attribute ).append( FilterOperator.PRESENT.operator() ).append( ")" ); 62 } 63 }