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 java.util.ArrayList; 24 import java.util.List; 25 26 import org.apache.directory.api.asn1.DecoderException; 27 28 29 /** 30 * This Filter abstract class is used to store a set of filters used by 31 * OR/AND/NOT filters. 32 * 33 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 34 */ 35 public abstract class ConnectorFilter extends Filter 36 { 37 /** The set of filters used by And/Or filters */ 38 protected List<Filter> filterSet; 39 40 41 /** 42 * Add a new Filter to the list. 43 * 44 * @param filter The filter to add 45 * @throws DecoderException If the added filter is invalid 46 */ 47 public void addFilter( Filter filter ) throws DecoderException 48 { 49 50 if ( filterSet == null ) 51 { 52 filterSet = new ArrayList<Filter>(); 53 } 54 55 filterSet.add( filter ); 56 } 57 58 59 /** 60 * Get the list of filters stored in the composite filter 61 * 62 * @return And array of filters 63 */ 64 public List<Filter> getFilterSet() 65 { 66 return filterSet; 67 } 68 69 70 /** 71 * Return a string compliant with RFC 2254 representing a composite filter, 72 * one of AND, OR and NOT 73 * 74 * @return The composite filter string 75 */ 76 public String toString() 77 { 78 StringBuffer sb = new StringBuffer(); 79 80 if ( ( filterSet != null ) && ( filterSet.size() != 0 ) ) 81 { 82 for ( Filter filter : filterSet ) 83 { 84 sb.append( '(' ).append( filter ).append( ')' ); 85 } 86 } 87 88 return sb.toString(); 89 } 90 }