ModeShape/modeshape — pull request #1216 by rhauch (2014-08-21 22:57:34+00:00)
Title: MODE-2178 Added test that verifies that the existing behavior works as expected

Using a criteria "`... WHERE [car:engine] == '' ...`" will only work when the property value
is non-null and is an empty string. This works as expected.

Note that using
```
... WHERE LENGTH([car:engine]) == 0
```
or
```
... WHERE [car:engine] IS NULL OR [car:engine] = ''
```
both work fine even before this commit.