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https://issues.apache.org/jira/browse/PIG-1885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13003968#comment-13003968
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Deepak Kumar V commented on PIG-1885:
-------------------------------------
There are few more cases that needs to be handled.
a) beginindex is -ve
Current Behavior: SUBSTRING throws ExceException because of
java.lang.StringIndexOutOfBoundsException
b) beginindex > endindex
Current Behavior: SUBSTRING throws ExceException because of
java.lang.StringIndexOutOfBoundsException
c) beginindex > string length -- bug reported
Current Behavior: SUBSTRING throws ExceException because of
java.lang.StringIndexOutOfBoundsException
d) endindex is -ve
Current Behavior: SUBSTRING throws ExceException because of
java.lang.StringIndexOutOfBoundsException
SUBSTRING.java can be modified to return null in all above cases as follows
if(beginindex < 0 || beginindex > source.length() || beginindex >
endindex) {
return null;
}else {
return source.substring(beginindex, Math.min(source.length(),
endindex));
}
In case no one is working on this defect, reassign to me.
> SUBSTRING fails when input length less than start
> -------------------------------------------------
>
> Key: PIG-1885
> URL: https://issues.apache.org/jira/browse/PIG-1885
> Project: Pig
> Issue Type: Bug
> Components: impl
> Affects Versions: 0.8.0, 0.9.0
> Reporter: Alan Gates
> Priority: Minor
>
> SUBSTRING throws an error if it gets a string which has a length less than
> its start value. For example, SUBSTRING(x, 100, 120) will fail with any
> chararray of length less than 100. It should return null instead.
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