Bug #17099 NullPointerException at com.mysql.jdbc.Statement.getGeneratedKeys()

Description:
Hello!

I didn't find this bug reported anywhere, so I decided to put it inside your system.

Description:

1) inside the javadocs for the getGeneratedKeys() method it is written:

If this Statement object did not generate any keys, an empty ResultSet object is returned.

2) I will show an extremely simplified piece of code below, that tests this feature:

Statement stmt = conn.createStatement();
ResultSet rSet = stmt.getGeneratedKeys();
if (rSet.next()) {/*we inserted a row, do something*/}
else{/*we did not insert a row, do something else*/}
stmt.close();

3) after running this code we get NullPointerException:

Exception in thread "main" java.lang.NullPointerException
	at com.mysql.jdbc.Statement.getGeneratedKeysInternal(Statement.java:1144)
	at com.mysql.jdbc.Statement.getGeneratedKeys(Statement.java:1125)
	at Test.main(Test.java:23)

4) I think that this is a bug, or at least NullPointerException is not the proper solution

How to repeat:
It can aways be repeated.

Suggested fix:
No suggestions.

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/commits/2289

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/commits/2831

Fix will be available in 5.0.1 and 3.1.13. You can try a nightly snapshot from http://downloads.mysql.com/snapshots.php#connector-j if you want to test the fix before it's officially released. Thanks for the bug report.

Bug#13581 marked as duplicate of this one.