Opened 15 years ago
Closed 14 years ago
#1238 closed defect (fixed)
Problem handling NULL values with SDF in 2.1 final
| Reported by: | ksgeograf | Owned by: | |
|---|---|---|---|
| Priority: | low | Milestone: | |
| Component: | Web API | Version: | 2.1.0 |
| Severity: | minor | Keywords: | |
| Cc: | External ID: |
Description
If a datasource has NULL values, it is impossible to read data from the Http interface.
See SDF file attached to ticket #1228.
Using the test page: http://localhost/mapguide/mapagent/selectfeaturesform.html
Attempting to read features gives: "Value for LUMINAIRETYPE property is null"
Attempting various ways to overcome this with a filter always returns an empty result set: LUMINAIRETYPE <> NULL LUMINAIRETYPE != NULL NOT LUMINAIRETYPE = NULL
It seems as if any filter returns an empty result set: LUMINAIRETYPE LIKE '*' LUMINAIRETYPE = NULL LUMINAIRETYPE > 5
The last one should give an error as LUMINAIRETYPE is a string column.
Perhaps the data is somehow broken, but it is possible to view the data by creating a FeatureSource and using the "Preview" function in Maestro/Studio.
Hmm... Annoying... Trac has removed my linefeeds... Here it is with forced linefeeds:
If a datasource has NULL values, it is impossible to read data from the Http interface.
See SDF file attached to ticket #1228.
Using the test page: http://localhost/mapguide/mapagent/selectfeaturesform.html
Attempting to read features gives: "Value for LUMINAIRETYPE property is null"
Attempting various ways to overcome this with a filter always returns an empty result set:
LUMINAIRETYPE <> NULL
LUMINAIRETYPE != NULL
NOT LUMINAIRETYPE = NULL
It seems as if any filter returns an empty result set:
LUMINAIRETYPE LIKE '*'
LUMINAIRETYPE = NULL
LUMINAIRETYPE > 5
The last one should give an error as LUMINAIRETYPE is a string column.
Perhaps the data is somehow broken, but it is possible to view the data by creating a FeatureSource? and using the "Preview" function in Maestro/Studio.