| package org.apache.commons.ognl; |
| |
| /* |
| * 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. |
| */ |
| |
| import java.util.Collection; |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * Implementation of PropertyAccessor that sets and gets properties by storing and looking up values in Maps. |
| * |
| * $Id$ |
| */ |
| public class MapPropertyAccessor |
| implements PropertyAccessor |
| { |
| |
| public Object getProperty( Map<String, Object> context, Object target, Object name ) |
| throws OgnlException |
| { |
| Object result; |
| @SuppressWarnings( "unchecked" ) // checked by the invoker |
| Map<Object, Object> map = (Map<Object, Object>) target; |
| Node currentNode = ( (OgnlContext) context ).getCurrentNode().jjtGetParent(); |
| boolean indexedAccess = false; |
| |
| if ( currentNode == null ) |
| { |
| throw new OgnlException( "node is null for '" + name + "'" ); |
| } |
| if ( !( currentNode instanceof ASTProperty ) ) |
| { |
| currentNode = currentNode.jjtGetParent(); |
| } |
| if ( currentNode instanceof ASTProperty ) |
| { |
| indexedAccess = ( (ASTProperty) currentNode ).isIndexedAccess(); |
| } |
| |
| if ( ( name instanceof String ) && !indexedAccess ) |
| { |
| if ( "size".equals( name ) ) |
| { |
| result = map.size(); |
| } |
| else if ( "keys".equals( name ) || "keySet".equals( name ) ) |
| { |
| result = map.keySet(); |
| } |
| else if ( "values".equals( name ) ) |
| { |
| result = map.values(); |
| } |
| else if ( "isEmpty".equals( name ) ) |
| { |
| result = map.isEmpty() ? Boolean.TRUE : Boolean.FALSE; |
| } |
| else |
| { |
| result = map.get( name ); |
| } |
| } |
| else |
| { |
| result = map.get( name ); |
| } |
| |
| return result; |
| } |
| |
| public void setProperty( Map<String, Object> context, Object target, Object name, Object value ) |
| throws OgnlException |
| { |
| @SuppressWarnings( "unchecked" ) // checked by the invoker |
| Map<Object, Object> map = (Map<Object, Object>) target; |
| map.put( name, value ); |
| } |
| |
| public String getSourceAccessor( OgnlContext context, Object target, Object index ) |
| { |
| Node currentNode = context.getCurrentNode().jjtGetParent(); |
| boolean indexedAccess = false; |
| |
| if ( currentNode == null ) |
| { |
| throw new RuntimeException( "node is null for '" + index + "'" ); |
| } |
| |
| if ( !( currentNode instanceof ASTProperty ) ) |
| { |
| currentNode = currentNode.jjtGetParent(); |
| } |
| |
| if ( currentNode instanceof ASTProperty ) |
| { |
| indexedAccess = ( (ASTProperty) currentNode ).isIndexedAccess(); |
| } |
| |
| String indexStr = index.toString(); |
| |
| context.setCurrentAccessor( Map.class ); |
| context.setCurrentType( Object.class ); |
| |
| if ( String.class.isInstance( index ) && !indexedAccess ) |
| { |
| String key = indexStr.replace( "\"", "" ); |
| |
| if ( "size".equals( key ) ) |
| { |
| context.setCurrentType( int.class ); |
| return ".size()"; |
| } |
| if ( "keys".equals( key ) || "keySet".equals( key ) ) |
| { |
| context.setCurrentType( Set.class ); |
| return ".keySet()"; |
| } |
| if ( "values".equals( key ) ) |
| { |
| context.setCurrentType( Collection.class ); |
| return ".values()"; |
| } |
| if ( "isEmpty".equals( key ) ) |
| { |
| context.setCurrentType( boolean.class ); |
| return ".isEmpty()"; |
| } |
| } |
| |
| return ".get(" + indexStr + ")"; |
| } |
| |
| public String getSourceSetter( OgnlContext context, Object target, Object index ) |
| { |
| context.setCurrentAccessor( Map.class ); |
| context.setCurrentType( Object.class ); |
| |
| String indexStr = index.toString(); |
| |
| if ( String.class.isInstance( index ) ) |
| { |
| String key = indexStr.replace( "\"", "" ); |
| |
| if ( "size".equals( key ) || "keys".equals( key ) || "keySet".equals( key ) || "values".equals( key ) |
| || "isEmpty".equals( key ) ) |
| { |
| return ""; |
| } |
| } |
| |
| return ".put(" + indexStr + ", $3)"; |
| } |
| } |