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Alvaro created an issue |
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Features fecthed from data source twice for WFS v1.1/2.0 queries |
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Issue Type: |
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Assignee: |
Unassigned |
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Components: |
WFS |
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Created: |
05/Nov/15 1:12 AM |
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Environment: |
Running GeoServer (master) in Eclipse IDE. Tests using shapefiles as data provider or any WFS request available in the demos panel. |
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Priority: |
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Reporter: |
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The WFS requests of 1.1/2.0 versions force to read the features twice from the data source. The GetFeature operation in these versions needs precalculate the size of results (See: https://github.com/geoserver/geoserver/blob/master/src/wfs/src/main/java/org/geoserver/wfs/GetFeature.java#L318). It forces to read the features from the data provider (shapefiles) later (See: https://github.com/geoserver/geoserver/blob/master/src/wfs/src/main/java/org/geoserver/wfs/GetFeature.java#L531). Finally when the results are encoded the features are fetched again (See: https://github.com/geotools/geotools/blob/master/modules/extension/xsd/xsd-gml2/src/main/java/org/geotools/gml2/simple/FeatureCollectionEncoderDelegate.java#L101). There is a performance duplication issue. This issue is especially problematic with big data sources or complex/heavy querys. |
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