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; | |
/** | |
*/ | |
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; | |
} | |
} |