| SE_layerinfo_get_grid_sizes | |
Retrieves the spatial index grid sizes for a layer
LONG SE_layerinfo_get_grid_sizes (const SE_LAYERINFO layer, LFLOAT *grid_size, LFLOAT *grid_size2, LFLOAT *grid_size3);
| layer | The layerinfo handle |
| grid_size | A pointer to the grid size of a layer |
| grid_size2 | A pointer to the second level grid size |
| grid_size3 | A pointer to the third level grid size of a layer |
SE_layerinfo_get_grid_sizes returns the spatial index grid sizes for a specific layer.
The type of spatial index that is used for a particular layer is dependent on the DBMS in which the layer is stored and the type of spatial column the layer contains. Refer to the table for the list of possible grid size settings that can be returned for your DBMS.
|
DBMS |
Index Type |
grid_size_1 |
grid_size_2 |
grid_size_3 |
| DB2 | Grid |
<grid size 1> |
[grid size 2] |
[grid size 3] |
| Informix | R-tree |
-2.0 |
ignored |
ignored |
| SQL Server (binary) | Grid |
<grid size 1> |
[grid size 2] |
[grid size 3] |
| SQL Server (Geometry or Geography) | modified B-tree |
-6.0 |
ignored |
ignored |
| Oracle (binary) | Grid |
<grid size 1> |
[grid size 2] |
[grid size 3] |
|
Oracle (Oracle Spatial) |
None |
-1.0 |
ignored |
ignored |
|
Oracle (Oracle Spatial) |
R-tree |
-2.0 |
ignored |
ignored |
| PostgreSQL | R-tree |
-2.0 |
ignored |
ignored |
| PostgreSQL | None |
-1.0 |
ignored |
ignored |
| All | Automatic | 0.0 | 0.0 |
0.0 |
SE_SUCCESS
SE_SDE_NOT_STARTED
SE_NET_FAILURE
SE_INVALID_LAYERINFO_OBJECT
SE_INVALID_POINTER