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From "Gary Gregory (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (CSV-100) CSVParser: getHeaderMap throws NPE
Date Wed, 18 Sep 2013 14:59:52 GMT

     [ https://issues.apache.org/jira/browse/CSV-100?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gary Gregory resolved CSV-100.
------------------------------

       Resolution: Fixed
    Fix Version/s: 1.0
         Assignee: Gary Gregory

{noformat}
commit -m "[CSV-100] CSVParser: getHeaderMap throws NPE." C:/vcs/svn/apache/commons/trunks-proper/csv/src/main/java/org/apache/commons/csv/CSVParser.java
C:/vcs/svn/apache/commons/trunks-proper/csv/src/test/java/org/apache/commons/csv/CSVParserTest.java
    Sending        C:/vcs/svn/apache/commons/trunks-proper/csv/src/main/java/org/apache/commons/csv/CSVParser.java
    Sending        C:/vcs/svn/apache/commons/trunks-proper/csv/src/test/java/org/apache/commons/csv/CSVParserTest.java
    Transmitting file data ...
    Committed revision 1524435.
{noformat}
                
> CSVParser: getHeaderMap throws NPE 
> -----------------------------------
>
>                 Key: CSV-100
>                 URL: https://issues.apache.org/jira/browse/CSV-100
>             Project: Commons CSV
>          Issue Type: Bug
>          Components: Parser
>         Environment: commons-cvs version is the git-clone of current trunk
>            Reporter: Jeanette Winzenburg
>            Assignee: Gary Gregory
>              Labels: csvparser
>             Fix For: 1.0
>
>
> title nearly says it all :-) 
> Given a CSVParser parser, the following line throws an NPE:
> {code}
> Map<String, Integer> header = parser.getHeaderMap();
> {code}
> Stacktrace: 
> {noformat}
> Caused by: java.lang.NullPointerException
> at java.util.HashMap.<init>(HashMap.java:318)
> at java.util.LinkedHashMap.<init>(LinkedHashMap.java:212)
> at org.apache.commons.csv.CSVParser.getHeaderMap(CSVParser.java:288)
> {noformat}
> happens if the format doesn't have a headerMap.
> to fix, check if the parser's headerMap is null before trying to create the returned
map:
> {code}
> public Map<String, Integer> getHeaderMap() {
>     return this.headerMap != null ?
>        new LinkedHashMap<String, Integer>(this.headerMap)
>        : null;
> }
> {code}

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