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https://issues.apache.org/jira/browse/MAHOUT-948?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13204866#comment-13204866
 ] 

Hudson commented on MAHOUT-948:
-------------------------------

Integrated in Mahout-Quality #1344 (See 
[https://builds.apache.org/job/Mahout-Quality/1344/])
    MAHOUT-948 better error for bad type

srowen : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1242333
Files : 
* 
/mahout/trunk/integration/src/main/java/org/apache/mahout/utils/vectors/arff/MapBackedARFFModel.java

                
> Improved error reporting when ARFF index does not exist in arff.vector [fix 
> provided]
> -------------------------------------------------------------------------------------
>
>                 Key: MAHOUT-948
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-948
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Integration
>         Environment: I just pulled the latest from SVN today (01/17/2012)
>            Reporter: Stuart Smith
>            Assignee: Sean Owen
>            Priority: Trivial
>              Labels: patch
>             Fix For: 0.7
>
>         Attachments: MapBackedARFFModel.java
>
>   Original Estimate: 0h
>  Remaining Estimate: 0h
>
> MapBackedARFFModel throws an NPE when getValue is passed an idx for an 
> attribute that does not exist.
> In short, this:
> <code>
>   public double getValue(String data, int idx) {
>     ARFFType type = typeMap.get(idx);
>     data = QUOTE_PATTERN.matcher(data).replaceAll("");
>     data = data.trim();
>     double result;
>     if( type == null ) {
>       throw new IllegalStateException( "Attribute type cannot be NULL, 
> attribute index was: " + idx );
>     }         
>     switch (type) {
>       case NUMERIC:
>         result = processNumeric(data);
> </code>
> Is better than this:
> <code>
>   public double getValue(String data, int idx) {
>     ARFFType type = typeMap.get(idx);
>     data = QUOTE_PATTERN.matcher(data).replaceAll("");
>     data = data.trim();
>     double result;
>    switch (type) {
>       case NUMERIC:
>         result = processNumeric(data);
>  </code>

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