com.rapiddweller.script.expression.ParameterizedConstruction Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of rd-lib-script Show documentation
Show all versions of rd-lib-script Show documentation
'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.ArrayFormat;
import com.rapiddweller.commons.BeanUtil;
import com.rapiddweller.commons.Context;
import com.rapiddweller.script.Expression;
/**
* {@link Expression} implementation that instantiates a Java object by constructor invocation.
*
* Created at 06.10.2009 11:48:59
* @since 0.6.0
* @author Volker Bergmann
*/
public class ParameterizedConstruction extends Construction {
private Expression[] argumentExpressions;
public ParameterizedConstruction(String className, Expression[] argumentExpressions) {
super(className);
this.argumentExpressions = argumentExpressions;
}
@Override
@SuppressWarnings("unchecked")
public E evaluate(Context context) {
Class type = getType(context);
Object[] arguments = new Object[argumentExpressions.length];
for (int i = 0; i < argumentExpressions.length; i++)
arguments[i] = argumentExpressions[i].evaluate(context);
return (E) BeanUtil.newInstance(type, false, arguments);
}
public boolean classExists(Context context) {
try {
getType(context);
return true;
} catch (Exception e) {
return false;
}
}
@Override
public String toString() {
return "new " + className + '(' + ArrayFormat.format(", ", argumentExpressions) + ')';
}
}