Opened 12 years ago

Closed 12 years ago

Last modified 12 years ago

#19058 closed Bug (fixed)

Inserting NULL value in Oracle spatial backend causes crash.

Reported by: Jani Tiainen Owned by: nobody
Component: Database layer (models, ORM) Version: 1.4
Severity: Normal Keywords: gis oracle orm
Cc: Triage Stage: Accepted
Has patch: no Needs documentation: no
Needs tests: no Patch needs improvement: no
Easy pickings: no UI/UX: no

Description

Seem to be regression of #10888.

Main issue is that when inserting or updating spatial field value cx_Oracle interpreted NULL value for SDO_GEOMETRY field when placeholder (%s) as a CHAR. (since it's Oracle user type actually). Both insert and update failed.

As a solution it was implemented so that when ever encountering None value for geometry field placeholder and actual value was removed from the whole insert clause.

Change History (8)

comment:1 by Anssi Kääriäinen, 12 years ago

Triage Stage: UnreviewedAccepted

Marking this as accepted based on IRC discussions. I don't have spatial Oracle available, so I am relying on reporting alone.

comment:2 by Anssi Kääriäinen, 12 years ago

First, there is a way to install Oracle "full edition" with spatial support using https://code.djangoproject.com/wiki/OracleSpatialTestSetup

The current proposal is to alter the code around line 890 in sql/compiler.py from:

        else:
            placeholders = [
                [self.placeholder(field, v) for field, v in zip(fields, val)]
                for val in values
            ]

to

        else:
            placeholders = [
                [self.placeholder(field, v) for field, v in zip(fields, val)]
                for val in values
            ]
            # Oracle GIS needs to remove some values due to #10888
            values = connection.ops.modify_insert_values(placeholders, values) 

Default implementation of modify_insert_values is to just return values, Oracle gis would need to loop the placeholders and values in sync and remove values for 'NULL' placeholders.

This way we could fix this issue, and also get rid of Oracle GIS compiler.py.

comment:3 by Jani Tiainen, 12 years ago

Initial implementation as discussed above:

https://github.com/jtiai/django/commit/a5ebc25

There is still quite a bunch of tests failing on Oracle.

comment:4 by Anssi Kääriäinen, 12 years ago

I am going to push the patch pretty much as is. Even if Oracle GIS is still broken after this to me it seems like one step in the right direction. We can't break Oracle GIS, and I can't see how this could break anything else. So, I will push this to 1.4.x on the grounds that this is a crash-fix for Oracle GIS.

comment:5 by Anssi Kääriäinen <akaariai@…>, 12 years ago

Resolution: fixed
Status: newclosed

In 92d7f541da8b59520c833b19fbba52d3ecef2428:

Fixed #19058 -- Fixed Oracle GIS crash

The problem is the same as in #10888 which was reintroduced when
bulk_insert was added. Thanks to Jani Tiainen for report, patch and
also testing the final patch on Oracle GIS.

comment:6 by Anssi Kääriäinen <akaariai@…>, 12 years ago

In 33f1181c31e0ee5bc5e20ca2a8549508de807623:

[1.5.x] Fixed #19058 -- Fixed Oracle GIS crash

The problem is the same as in #10888 which was reintroduced when
bulk_insert was added. Thanks to Jani Tiainen for report, patch and
also testing the final patch on Oracle GIS.

Backpatch of 92d7f541da8b59520c833b19fbba52d3ecef2428

comment:7 by Anssi Kääriäinen <akaariai@…>, 12 years ago

In 25e041f270bec5a69e525d47f18a73fe917d1787:

[1.4.x] Fixed #19058 -- Fixed Oracle GIS crash

The problem is the same as in #10888 which was reintroduced when
bulk_insert was added. Thanks to Jani Tiainen for report, patch and
also testing the final patch on Oracle GIS.

Backpatch of 92d7f541da8b59520c833b19fbba52d3ecef2428

comment:8 by Preston Holmes <preston@…>, 12 years ago

In 7e71c7deac1f189c5c11077c03fd53ffb23d99e4:

Fixed #19058 -- Fixed Oracle GIS crash

The problem is the same as in #10888 which was reintroduced when
bulk_insert was added. Thanks to Jani Tiainen for report, patch and
also testing the final patch on Oracle GIS.

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