Null pointer exception indexed attribute has null value.

[GoogleCodeExporter]

What steps will reproduce the problem?
1.Create IndexedCollection for a POJO type and add index on any attribute.
2.Add a object of that POJO with indexed attribute null.
3. Works with empty string.

What is the expected output? What do you see instead?
Should behave as with empty string even with complex type is null there.
Otherwise user have to check and set empty string for null.

What version of the product are you using? On what operating system?
0.9.1-all

Please provide any additional information below.

Original issue reported on code.google.com by SylentPr...@gmail.com on 25 Oct 2012 at 2:47