"the supplied storage callbacks size is wrong, expected 56, got 48" error with custom storage about rtree HOT 1 CLOSED

There was a change in libspatialindex to add another method to the callback mechanism. You'll need to check the test suite of a current rtree for an example of the additional method you need to implement.

Hope this helps,

Howard

On Jul 15, 2013, at 4:33 AM, Gunnar Aastrand Grimnes [email protected] wrote:

I'm trying to implement a custom storage for rtree, and get the following exception:

Traceback (most recent call last):

File "test.py", line 5, in

tree = rtree.index.Rtree(RTreeRedis())

File "/Users/gunnar/projects/rtree-redis/env.rtreeredis/lib/python2.7/site-packages/rtree/index.py", line 225, in init

storage.registerCallbacks( self.properties )

File "/Users/gunnar/projects/rtree-redis/env.rtreeredis/lib/python2.7/site-packages/rtree/index.py", line 1158, in registerCallbacks

properties.custom_storage_callbacks = ctypes.cast( ctypes.pointer(callbacks), ctypes.c_void_p )

File "/Users/gunnar/projects/rtree-redis/env.rtreeredis/lib/python2.7/site-packages/rtree/index.py", line 1028, in set_custom_storage_callbacks

return core.rt.IndexProperty_SetCustomStorageCallbacks(self.handle, value)

File "/Users/gunnar/projects/rtree-redis/env.rtreeredis/lib/python2.7/site-packages/rtree/core.py", line 17, in check_return

raise RTreeError(msg)
rtree.core.RTreeError: LASError in "IndexProperty_SetCustomStorageCallbacks": The supplied storage callbacks size is wrong, expected 56, got 48
I based my code on this: https://github.com/Toblerity/zope.index.rtree/blob/master/rtree/storage.py

and since it fails already when constructing the rtree index, very little of my code actually runs.

This on python 2.7.5 on OSX 12.4.0, i.e. x86_64

Thanks for any pointers!

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