jcckit.util.FactoryException Maven / Gradle / Ivy
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/*
* Copyright 2003-2004, Franz-Josef Elmer, All rights reserved
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program 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 Lesser General Public License for more details
* (http://www.gnu.org/copyleft/lesser.html).
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package jcckit.util;
import java.lang.reflect.InvocationTargetException;
/**
* Exception thrown in the case of an error during creation of a new
* object by {@link Factory#create}.
*
* @author Franz-Josef Elmer
*/
public class FactoryException extends RuntimeException {
private final String _fullKey;
private final String _className;
private final Object _reason;
/**
* Creates a new instance based on the specified configuration parameters
* and reason object.
*
* If reason is an instance of InvocationTargetException
* it will be replaced by the wrapped Throwable.
* @param configParameters Configuration parameters from which the
* className will be extracted (if it exists, otherwise
* null will be taken).
* @param reason The reason causing this exception. Most often an
* an exception.
*/
public FactoryException(ConfigParameters configParameters, String key,
Object reason) {
_fullKey = configParameters.getFullKey(key);
_className = configParameters.get(key, null);
if (reason instanceof InvocationTargetException) {
reason = ((InvocationTargetException) reason).getTargetException();
}
_reason = reason;
}
/** Returns the full class name key. */
public String getFullKey() {
return _fullKey;
}
/** Returns the fully qualified class name. */
public String getClassName() {
return _className;
}
/** Returns the reason object causing this exception. */
public Object getReason() {
return _reason;
}
/**
* Renders this instance as follows: jcckit.util.FactoryException:
* full key = class name: reason.
*/
public String toString() {
return getClass().getName() + ": " + _fullKey + " = " + _className
+ ": " + _reason;
}
}