RE: Is this a bug with oro?

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Some context and code in which this fails and data with which this fails =
would help.
Also the version you are using would help.

However, inspecting 2.0.6 code (which is the most handy on the machine =
I'm on -- I suspect other code is similar),=20
there is only one place in __setLastMatchResult() where you can get a =
NPE.  __lastMatchResult is non-null.  OpCode is non-null.  However, =
__originalInput MIGHT be null.  Hence you can get a NPE where the =
__originalInput.length is tested.  Check your code whether the string in =
contains() is null, and always check if the result is true.

E.g.,

private PatternCompiler m_compiler =3D new Perl5Compiler();
private PatternMatcher m_matcher =3D new Perl5Matcher();
private Pattern m_commentRegex =3D m_compiler.compile ( "#" );

/** Extract comment from string. */
public String findComment ( String s )
{
   if ( s =3D=3D null ) return null;
   if ( m_matcher.contains ( s, m_commentRegex ) )
   {
      MatchResult result =3D m_matcher.getMatch();
      String comment =3D s.substring ( result.endOffset(0) );
      return comment;
   }
   return null;
}

Enjoy.
Kevin Markey

-----Original Message-----
From: Balaji [mailto:[email protected]]
Sent: Tue 3/31/2009 6:22 AM
To: [email protected]
Subject: Is this a bug with oro?
=20
Hello,
=20
I occassionally get the below exception. The call to getMatch is causing =
a
NullPointerException.
=20
Caused by: java.lang.NullPointerException
    at =
org.apache.oro.text.regex.Perl5Matcher.__setLastMatchResult(Unknown
Source)
    at org.apache.oro.text.regex.Perl5Matcher.getMatch(Unknown Source)
=20
Here is what the API documentation says,
A MatchResult instance containing the pattern match found by the last =
call
to any one of the matches() or contains() methods. If no match was found =
by
the last call, returns null.
=20
I believe this is a bug. Can you guys, please confirm?
If so, is there a fix or a workaround for this bug?
=20
Any help will be greatly appreciated.
=20
Thanks,
Balaji Prabhakaran



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