| /* |
| * 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.core.api.subtree; |
| |
| |
| import java.util.Iterator; |
| |
| import org.apache.directory.api.ldap.model.constants.SchemaConstants; |
| import org.apache.directory.api.ldap.model.entry.Attribute; |
| import org.apache.directory.api.ldap.model.exception.LdapException; |
| import org.apache.directory.api.ldap.model.filter.EqualityNode; |
| import org.apache.directory.api.ldap.model.filter.SimpleNode; |
| import org.apache.directory.api.ldap.model.schema.AttributeType; |
| import org.apache.directory.api.ldap.model.schema.SchemaManager; |
| import org.apache.directory.server.i18n.I18n; |
| |
| |
| /** |
| * A refinement leaf node evaluator. This evaluator checks to see if the |
| * objectClass attribute of a candidate entry is matched by a leaf node in |
| * a refinement filter expression tree. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class RefinementLeafEvaluator |
| { |
| /** A SchemaManager instance */ |
| private final SchemaManager schemaManager; |
| |
| /** A storage for the ObjectClass attributeType */ |
| private AttributeType OBJECT_CLASS_AT; |
| |
| |
| /** |
| * Creates a refinement filter's leaf node evaluator. |
| * |
| * @param schemaManager The server schemaManager |
| */ |
| public RefinementLeafEvaluator( SchemaManager schemaManager ) |
| { |
| this.schemaManager = schemaManager; |
| OBJECT_CLASS_AT = schemaManager.getAttributeType( SchemaConstants.OBJECT_CLASS_AT ); |
| } |
| |
| |
| /** |
| * Evaluates whether or not a simple leaf node of a refinement filter selects an |
| * entry based on the entry's objectClass attribute values. |
| * |
| * @param node the leaf node of the refinement filter |
| * @param objectClasses the objectClass attribute's values |
| * @return true if the leaf node selects the entry based on objectClass values, false |
| * if it rejects the entry |
| * @throws LdapException |
| */ |
| public boolean evaluate( SimpleNode node, Attribute objectClasses ) throws LdapException |
| { |
| if ( node == null ) |
| { |
| throw new IllegalArgumentException( I18n.err( I18n.ERR_295 ) ); |
| } |
| |
| if ( !( node instanceof EqualityNode ) ) |
| { |
| throw new LdapException( I18n.err( I18n.ERR_301, node ) ); |
| } |
| |
| if ( node.isSchemaAware() ) |
| { |
| if ( !node.getAttributeType().equals( OBJECT_CLASS_AT ) ) |
| { |
| throw new IllegalArgumentException( I18n.err( I18n.ERR_302, node.getAttribute() ) ); |
| } |
| } |
| else if ( !node.getAttribute().equalsIgnoreCase( SchemaConstants.OBJECT_CLASS_AT ) && |
| !node.getAttribute().equalsIgnoreCase( SchemaConstants.OBJECT_CLASS_AT_OID ) ) |
| { |
| throw new IllegalArgumentException( I18n.err( I18n.ERR_302, node.getAttribute() ) ); |
| } |
| |
| if ( null == objectClasses ) |
| { |
| throw new IllegalArgumentException( I18n.err( I18n.ERR_303 ) ); |
| } |
| |
| if ( !( objectClasses.isInstanceOf( OBJECT_CLASS_AT ) ) ) |
| { |
| throw new IllegalArgumentException( I18n.err( I18n.ERR_304 ) ); |
| } |
| |
| // check if Ava value exists in attribute |
| // If the filter value for the objectClass is an OID we need to resolve a name |
| String value = node.getValue().getString(); |
| |
| if ( objectClasses.contains( value ) ) |
| { |
| return true; |
| } |
| |
| if ( Character.isDigit( value.charAt( 0 ) ) ) |
| { |
| Iterator<String> list = schemaManager.getGlobalOidRegistry().getNameSet( value ).iterator(); |
| |
| while ( list.hasNext() ) |
| { |
| String objectClass = list.next(); |
| |
| if ( objectClasses.contains( objectClass ) ) |
| { |
| return true; |
| } |
| } |
| } |
| |
| // no match so return false |
| return false; |
| } |
| } |