/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2014, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* 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 library 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.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* ---------------
* CloneUtils.java
* ---------------
* (C) Copyright 2014, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 08-Apr-2014 : Version 1 (DG);
*
*/
package org.jfree.chart.util;
import java.util.HashMap;
import java.util.Map;
/**
* Utilities for cloning.
*
* @since 1.0.18
*/
public class CloneUtils {
/**
* Returns a new map that contains the same keys and cloned copied of the
* values.
*
* @param source the source map (<code>null</code> not permitted).
*
* @return A new map.
*
* @since 1.0.18
*/
public static Map cloneMapValues(Map source) {
ParamChecks.nullNotPermitted(source, "source");
Map result = new HashMap();
for (Object key : source.keySet()) {
Object value = source.get(key);
if (value != null) {
try {
result.put(key, ObjectUtils.clone(value));
} catch (CloneNotSupportedException ex) {
throw new RuntimeException(ex);
}
} else {
result.put(key, null);
}
}
return result;
}
}