Martin Desruisseaux created SIS-339:
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Summary: Feature attribute should verify the CRS of geometric value
Key: SIS-339
URL: https://issues.apache.org/jira/browse/SIS-339
Project: Spatial Information Systems
Issue Type: Improvement
Components: Features
Affects Versions: 0.7
Reporter: Martin Desruisseaux
Priority: Minor
In the {{org.apache.sis.feature}} package, a {{DefaultFeature}} can contains an
attribute which itself contains a characteristic having the
{{AttributeConvention.CRS_CHARACTERISTIC}} name. The value of that
characteristic is the Coordinate Reference System (CRS) of the geometry that
this attribute can contains. However there is currently no verification that a
geometry given to that attribute has the expected CRS. We should add a
verification mechanism, compatible with both JTS and ESRI API. This may require
Java reflection code, since those two libraries are optional.
One open question is where to store the CRS information in the geometry object.
JTS has a SRID property, but it is only an {{int}} type. It could be decided
that the integer value is the EPSG code, but this is an arbitrary (while
common) decision. Alternatively we could use the JTS user object for storing
the full {{CoordinateReferenceSystem}} object, but this is another arbitrary
decision.
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