Opened 17 years ago

Closed 17 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:


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 by Jari Häkkinen, 17 years ago

Milestone: BASE 2.4BASE 2.3

Milestone BASE 2.4 deleted

comment:3 by Nicklas Nordborg, 17 years ago

Priority: minormajor

comment:4 by Nicklas Nordborg, 17 years ago

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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