/*
* RapidMiner
*
* Copyright (C) 2001-2011 by Rapid-I and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapid-i.com
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.tools;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Map;
import com.rapidminer.operator.UserError;
/**
* Uses long class names and maps them to the final (short) part.
* These can be used for example for GUI purposes.
*
* @author Michael Wurst, Ingo Mierswa
*/
public class ClassNameMapper {
Map<String, String> classMap = new LinkedHashMap<String, String>();
public ClassNameMapper(String[] classNames) {
for (int i = 0; i < classNames.length; i++) {
String completeClassName = classNames[i];
String simpleClassName = completeClassName;
// if possible, strip package information
int index = completeClassName.lastIndexOf('.');
if (index > -1)
simpleClassName = completeClassName.substring(index + 1);
// if no class with the same short name is found in the map, add it
// else use the complete class name
if (classMap.get(simpleClassName) == null) {
classMap.put(simpleClassName, completeClassName);
} else {
classMap.put(completeClassName, completeClassName);
}
}
}
public String getCompleteClassName(String shortName) {
return classMap.get(shortName);
}
public Class getClassByShortName(String shortName) throws UserError {
String completeClassName = getCompleteClassName(shortName);
// if the name is not found in the map, try to use the one provided as parameter.
if (completeClassName == null)
completeClassName = shortName;
if (completeClassName == null) {
throw new UserError(null, 904, shortName, "No such class.");
}
try {
return Class.forName(completeClassName);
} catch (ClassNotFoundException e) {
throw new UserError(null, 904, shortName, e.getMessage());
}
}
public String[] getShortClassNames() {
String[] result = new String[classMap.size()];
Iterator<String> it = classMap.keySet().iterator();
for (int i = 0; i < classMap.size(); i++)
result[i] = it.next();
return result;
}
public Object getInstantiation(String shortName) throws UserError {
Object result = null;
try {
result = getClassByShortName(shortName).newInstance();
if (result == null) {
throw new UserError(null, 904, shortName, "No such class");
}
} catch (InstantiationException e) {
throw new UserError(null, 904, shortName, e.getMessage());
} catch (IllegalAccessException e) {
throw new UserError(null, 904, shortName, e.getMessage());
}
return result;
}
}