Opened 16 years ago

Closed 15 years ago

#564 closed enhancement (fixed)

Add support for filtering against null values in JEP

Reported by: Nicklas Nordborg Owned by: Nicklas Nordborg
Priority: major Milestone: BASE 2.4
Component: core Version:
Keywords: Cc:

Description

It is not directly possible to filter out null (or non-null) values in a JEP filter. JEP filters are used by the FormulaFilter? plugin and in lots of other places.

A workaround is to use a filter that matches all values (except null), for example:

ch(1) > 0
ch(1) <= 0

This doesn't work if you want to keep the null values. One way is to add an isnull() function to JEP which is easy. Another idea is to simply be able to type 'ch(1) == null' or 'ch(1) != null' which might be trickier to implement.

Change History (4)

comment:2 Changed 16 years ago by Jari Häkkinen

Milestone: BASE 2.4BASE 2.3

Milestone BASE 2.4 deleted

comment:3 Changed 15 years ago by Nicklas Nordborg

Priority: minormajor

comment:4 Changed 15 years ago by Nicklas Nordborg

Resolution: fixed
Status: newclosed

(In [3456]) Fixes #564. It is now possible to use: ch(1) == null or ch(1) != null

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