/**********************************************************************************
* $URL: https://source.sakaiproject.org/svn/kernel/trunk/kernel-util/src/main/java/org/sakaiproject/util/MapUtil.java $
* $Id: MapUtil.java 105077 2012-02-24 22:54:29Z ottenhoff@longsight.com $
***********************************************************************************
*
* Copyright (c) 2007, 2008 Sakai Foundation
*
* Licensed under the Educational Community 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.opensource.org/licenses/ECL-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 org.sakaiproject.util;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import org.sakaiproject.util.Web;
/**
* <p>
* MapUtil collects together some string utility classes.
* </p>
*/
public class MapUtil
{
/**
* Copies elements from a map to another map (similar to putall)
*
* @param destMap
* The Map to add the key/value pairs to.
* @param sourceMap
* The Map to add the key/value pairs from
* @return true if there were keys copied
*/
public static boolean copy(Map destMap, Map sourceMap)
{
if ( destMap == null || sourceMap == null || sourceMap.isEmpty() ) return false;
Set s = sourceMap.keySet();
if ( s == null ) return false;
Iterator iSet = s.iterator();
boolean retval = false;
while (iSet.hasNext()) {
Object item = iSet.next();
destMap.put(item,sourceMap.get(item));
// System.out.println("Copying "+item+" ="+sourceMap.get(item));
retval = true;
}
return retval;
}
/**
* Assigns a value from one map to another
*
* destMap[destKey] = sourceMap[sourceKey];
*
* @param destMap
* The Map to add the key/value pair to.
* @param destKey
* The key to use in the destination map.
* @param sourceMap
* The Map to add the key/value pairs from
* @param sourceKey
* The key to use from the source map.
* @return true if there were keys copied
*/
public static boolean copy(Map destMap, String destKey, Map sourceMap, String sourceKey)
{
if ( destMap == null || sourceMap == null || sourceMap.isEmpty() ) return false;
Object o = sourceMap.get(sourceKey);
if ( o == null ) return false;
destMap.put(destKey,o);
// System.out.println("dest["+destKey+"]=source["+sourceKey+"] = "+ o);
return true;
}
/**
* Assigns a value from one map to another - applying an HMTL filter to the value
*
* destMap[destKey] = sourceMap[sourceKey];
*
* @param destMap
* The Map to add the key/value pair to.
* @param destKey
* The key to use in the destination map.
* @param sourceMap
* The Map to add the key/value pairs from
* @param sourceKey
* The key to use from the source map.
* @return true if there were keys copied
*/
public static boolean copyHtml(Map destMap, String destKey, Map sourceMap, String sourceKey)
{
if ( destMap == null || sourceMap == null || sourceMap.isEmpty() ) return false;
try {
String s = (String) sourceMap.get(sourceKey);
if ( s == null ) return false;
destMap.put(destKey,Web.escapeHtml(s));
return true;
} catch (Exception t) { // Not a string
return false;
}
}
}