FeatureStore modifyFeature by Name - STEMLab/geotools GitHub Wiki

• Contact: Jody Garnett

• Tracker: https://osgeo-org.atlassian.net/browse/GEOT-2376

• Tagline: modifyFeatures(Name,Value,Filter)

I have a bug assigned to me, GEOT-2376 covering what appears to be a mistake early on when defining FeatureStore. The modifyFeature methods both take an AttributeDescriptor, rather then a Name.

There are a couple of drawbacks to this:

• it introduced the possibility of error (the user has to look up the exactly correct attribute descriptor).
• It "mixing up "query" api with "metadata" description (a mistake me made earlier when Filter required an AttributeType)
• it is needlessly complicated

To back up this bug a code review of all feature store implementations show that:

• implementors noticed the waste of time and simply use the provided AttributeDescriptor as as String (using descriptor.getLocalName())
• i the case of JDBCDataStore they look up the correct attribute descriptor by Name and silently substitute.

Before:

interface implements FeatureStore<T,F> extends FeatureSource<T,F> {
   ...
   modifyFeature( AttributeDescriptor type, Object value, Filter filter );
   modifyFeature( AttributeDescriptor type[], Object value[], Filter filter );
   ...
}

After:

interface implements FeatureStore<T,F> extends FeatureSource<T,F> {
   ...
   modifyFeature( Name name, Object value, Filter filter );

   @deprecated
   modifyFeature( AttributeDescriptor type, Object value, Filter filter );

   modifyFeature( Name names[], Object values[], Filter filter );

   @deprecated
   modifyFeature( AttributeDescriptor type[], Object value[], Filter filter );
   ...
}

The patch also updates implementations and passes tests when applied against 2.6.x at the time of writing.

Related:

• It would be kind to add SimpleFeatureStore implementations that take a String should that proposal be accepted.

This bug report now needs a proposal as it reflects an api change; the patch is ready.

Proposal accepted; applied to trunk:

• Andrea Aime +1

• Ben Caradoc-Davies +1

• Christian Mueller +1

• Ian Turton +1

• Justin Deoliveira +1

• Jody Garnett +1

• Michael Bedward +0

• Simone Giannecchini +0

      | :white_check_mark: | :no_entry: | :warning:               | :negative_squared_cross_mark: |
  

------------|--------------------|------------|-------------------------|-------------------------------| no progress | done | impeded | lack mandate/funds/time | volunteer needed |

1. Apply patch from https://osgeo-org.atlassian.net/browse/GEOT-2376 to trunk
   • May wish to update SimpleFeatureStore with modifyFeature( String name, Object value, Filter filter ) and modifyFeatures( String name[], Object value[], Filter filter )

1. Update example code