/*
* Copyright 2002-2009 the original author or authors.
*
* Licensed 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.springframework.expression.spel.ast;
import org.springframework.expression.EvaluationException;
import org.springframework.expression.TypedValue;
import org.springframework.expression.spel.ExpressionState;
/**
* Represents assignment. An alternative to calling setValue() for an expression is to use an assign.
*
* <p>Example: 'someNumberProperty=42'
*
* @author Andy Clement
* @since 3.0
*/
public class Assign extends SpelNodeImpl {
public Assign(int pos,SpelNodeImpl... operands) {
super(pos,operands);
}
@Override
public TypedValue getValueInternal(ExpressionState state) throws EvaluationException {
TypedValue newValue = children[1].getValueInternal(state);
getChild(0).setValue(state, newValue.getValue());
return newValue;
}
@Override
public String toStringAST() {
return new StringBuilder().append(getChild(0).toStringAST()).append("=").append(getChild(1).toStringAST())
.toString();
}
}
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