/* -*- tab-width: 4 -*-
*
* Electric(tm) VLSI Design System
*
* File: ConstructorInject.java
*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
*
* Electric(tm) is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Electric(tm) is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Electric(tm); see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, Mass 02111-1307, USA.
*/
package com.sun.electric.util.config;
import java.lang.reflect.Constructor;
import com.sun.electric.util.config.annotations.Inject;
import com.sun.electric.util.config.model.ParameterEntry;
/**
* @author Felix Schmidt
*/
public class ConstructorInject<T> extends InjectStrategy<T> {
/*
* (non-Javadoc)
*
* @see com.sun.electric.util.config.InjectStrategy#inject(java.lang.Object,
* java.lang.Class, com.sun.electric.util.config.model.ParameterEntry[])
*/
@Override
public T inject(Class<T> clazz, ParameterEntry... entries) throws Exception {
T instance = null;
if (entries == null || entries.length == 0) {
instance = clazz.newInstance();
} else {
Constructor<T> finalConstructor = null;
Object[] paramObjs = new Object[entries.length];
Constructor<?>[] constructors = clazz.getConstructors();
for (Constructor<?> constructor : constructors) {
Inject inject = constructor.getAnnotation(Inject.class);
if (inject != null) {
try {
convertParameterEntires(inject, paramObjs, entries);
try {
finalConstructor = clazz.getConstructor(convertParametersToTypes(
constructor.getParameterTypes(), paramObjs));
break;
} catch (NoSuchMethodException ex) {
finalConstructor = null;
}
} catch (ParameterDoesntFit ex) {
}
}
}
if (finalConstructor != null) {
instance = finalConstructor.newInstance(paramObjs);
}
}
return instance;
}
}