| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.directory.server.xdbm.search.evaluator; |
| |
| |
| import org.apache.directory.api.ldap.model.entry.Entry; |
| import org.apache.directory.api.ldap.model.exception.LdapException; |
| import org.apache.directory.api.ldap.model.filter.ExprNode; |
| import org.apache.directory.api.ldap.model.filter.NotNode; |
| import org.apache.directory.server.xdbm.IndexEntry; |
| import org.apache.directory.server.xdbm.search.Evaluator; |
| |
| |
| /** |
| * An Evaluator for logical negation (NOT) expressions. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class NotEvaluator implements Evaluator<NotNode> |
| { |
| /** The ExprNode to evaluate */ |
| private final NotNode node; |
| |
| /** The Evaluator to use for the inner Node */ |
| private final Evaluator<? extends ExprNode> childEvaluator; |
| |
| |
| public NotEvaluator( NotNode node, Evaluator<? extends ExprNode> childEvaluator ) |
| { |
| this.node = node; |
| this.childEvaluator = childEvaluator; |
| } |
| |
| |
| public boolean evaluate( Entry entry ) throws Exception |
| { |
| return !childEvaluator.evaluate( entry ); |
| } |
| |
| |
| public boolean evaluate( IndexEntry<?, String> indexEntry ) throws LdapException |
| { |
| return !childEvaluator.evaluate( indexEntry ); |
| } |
| |
| |
| public NotNode getExpression() |
| { |
| return node; |
| } |
| |
| |
| /** |
| * @see Object#toString() |
| */ |
| public String toString( String tabs ) |
| { |
| StringBuilder sb = new StringBuilder(); |
| |
| sb.append( tabs ).append( "NotEvaluator : " ).append( node ).append( '\n' ); |
| |
| sb.append( childEvaluator.toString( tabs + " " ) ); |
| |
| return sb.toString(); |
| } |
| |
| |
| /** |
| * @see Object#toString() |
| */ |
| public String toString() |
| { |
| return toString( "" ); |
| } |
| } |