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'rapiddweller Script' is an open source software library for resolving Java-like script expressions,
forked from Databene Scripts written by Volker Bergmann.
/*
* Copyright (C) 2011-2014 Volker Bergmann ([email protected]).
* All rights reserved.
*
* 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 com.rapiddweller.script.expression;
import com.rapiddweller.commons.Context;
import com.rapiddweller.commons.converter.ToStringConverter;
import com.rapiddweller.script.Expression;
/**
* Wrapper for an {@link Expression} that converts its result to a {@link String}
* using the {@link ToStringConverter}.
* Created: 27.10.2009 13:35:29
* @since 0.5.0
* @author Volker Bergmann
*/
public class StringExpression extends UnaryExpression {
private ToStringConverter converter;
public StringExpression(Expression term) {
super("(string) ", term);
this.converter = new ToStringConverter(null);
}
@Override
public String evaluate(Context context) {
Object tmp = term.evaluate(context);
return (tmp instanceof String ? (String) tmp : converter.convert(tmp));
}
}