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Merged the Commons.Utils MapUtils in. It consisted of: 

safeAddToMap method.


git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/collections/trunk@130570 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Henri Yandell 2002-02-23 03:50:23 +00:00
parent e4605e7a79
commit 2bd797f65d
1 changed files with 31 additions and 3 deletions
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34
src/java/org/apache/commons/collections/MapUtils.java
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@ -1,7 +1,7 @@
/* /*
* $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//collections/src/java/org/apache/commons/collections/MapUtils.java,v 1.2 2002/02/10 08:07:42 jstrachan Exp $ * $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//collections/src/java/org/apache/commons/collections/MapUtils.java,v 1.3 2002/02/23 03:50:23 bayard Exp $
* $Revision: 1.2 $ * $Revision: 1.3 $
* $Date: 2002/02/10 08:07:42 $ * $Date: 2002/02/23 03:50:23 $
* *
* ==================================================================== * ====================================================================
* *
@ -70,6 +70,9 @@ import java.util.*;
* as well as other useful features like deep copying * as well as other useful features like deep copying
* *
* @author <a href="mailto:jstrachan@apache.org">James Strachan</a> * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
*
* @author <a href="mailto:nissim@nksystems.com">Nissim Karpenstein</a>
* @author <a href="mailto:knielsen@apache.org">Kasper Nielsen</a>
*/ */
public class MapUtils { public class MapUtils {
@ -397,4 +400,29 @@ public class MapUtils {
// XXXX: should probably use log4j here instead... // XXXX: should probably use log4j here instead...
System.out.println( "INFO: Exception: " + e ); System.out.println( "INFO: Exception: " + e );
} }
/**
* Nice method for adding data to a map in such a way
* as to not get NPE's. The point being that if the
* value is null, map.put() will throw an exception.
* That blows in the case of this class cause you may want to
* essentially treat put("Not Null", null ) == put("Not Null", "")
* We will still throw a NPE if the key is null cause that should
* never happen.
*/
public static final void safeAddToMap(Map map, Object key, Object value)
throws NullPointerException
{
if (value == null)
{
map.put ( key, "" );
}
else
{
map.put ( key, value );
}
}
} }