| 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 org.apache.commons.ognl.enhance.UnsupportedCompilationException; |
| |
| /** |
| * $Id$ |
| */ |
| class ASTEval |
| extends SimpleNode |
| { |
| |
| public ASTEval( int id ) |
| { |
| super( id ); |
| } |
| |
| public ASTEval( OgnlParser p, int id ) |
| { |
| super( p, id ); |
| } |
| |
| protected Object getValueBody( OgnlContext context, Object source ) |
| throws OgnlException |
| { |
| Object result, expr = children[0].getValue( context, source ), previousRoot = context.getRoot(); |
| Node node; |
| |
| source = children[1].getValue( context, source ); |
| node = ( expr instanceof Node ) ? (Node) expr : (Node) Ognl.parseExpression( expr.toString() ); |
| try |
| { |
| context.setRoot( source ); |
| result = node.getValue( context, source ); |
| } |
| finally |
| { |
| context.setRoot( previousRoot ); |
| } |
| return result; |
| } |
| |
| protected void setValueBody( OgnlContext context, Object target, Object value ) |
| throws OgnlException |
| { |
| Object expr = children[0].getValue( context, target ), previousRoot = context.getRoot(); |
| Node node; |
| |
| target = children[1].getValue( context, target ); |
| node = ( expr instanceof Node ) ? (Node) expr : (Node) Ognl.parseExpression( expr.toString() ); |
| try |
| { |
| context.setRoot( target ); |
| node.setValue( context, target, value ); |
| } |
| finally |
| { |
| context.setRoot( previousRoot ); |
| } |
| } |
| |
| public String toGetSourceString( OgnlContext context, Object target ) |
| { |
| throw new UnsupportedCompilationException( "Eval expressions not supported as native java yet." ); |
| } |
| |
| public String toSetSourceString( OgnlContext context, Object target ) |
| { |
| throw new UnsupportedCompilationException( "Map expressions not supported as native java yet." ); |
| } |
| |
| public <R, P> R accept( NodeVisitor<? extends R, ? super P> visitor, P data ) |
| throws OgnlException |
| { |
| return visitor.visit( this, data ); |
| } |
| |
| @Override |
| public boolean isEvalChain( OgnlContext context ) |
| throws OgnlException |
| { |
| return true; |
| } |
| } |