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[udig-devel] [jira] Created: (UDIG-601) when loading & rendering data from oracle datastore with large datasets there should be additional 'choices' to select the data
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when loading & rendering data from oracle datastore with large datasets there should be additional 'choices' to select the data
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Key: UDIG-601
URL: http://jira.codehaus.org/browse/UDIG-601
Project: uDIG
Type: Improvement
Components: oracle
Versions: UDIG 1.0.1
Environment: desktop: win XP, Pentium4, 2.8Ghz, 1gig ram
database: w2k (oracle 10.1.0.4.0 with spatial option), 2*zeon 800mhz processor, 1 gig ram
Reporter: jukka sirviö
Assigned to: Jody Garnett
Priority: Minor
When loading tables which contains large amount of spatial data (my opinion for large amount of spatial data is ower one million row) the loading and rendering takes too long. Could there be checking that if the table contains too much rows the user will be informed with "Ok" and "Cancel" -option?
Better choice could be :
- user have already loaded for example geotiff to uDig
- system knows the BoundingBox and / or wiewport of the window
- loading and rendering is done according the BoundingBox, not the whole table
- if the BoundingBox is too large (or unknown) and the dataset queried from database contains large amount of geometries then user response for some warning message ("Ok", "Cancel") should be required.
Loading and rendering of 1230135 polygons from database with above hardware configuration takes approximately one hour.
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