Class ObjectIdentification

The org.apache.sis.internal.jaxb.gco package conceptually defines two complementary objects: ObjectIdentification and ObjectReference. However, only the latter is defined by a Java class, because the former is implicitly defined by the classes in the public API of SIS. This page contains the information that we would have put in ObjectIdentification Javadoc is such class existed.

Overview

The gco:ObjectIdentification XML attribute group is implicitly included by all metadata types defined in the org.apache.sis.metadata.iso packages. The attributes of interest defined in this group are id and uuid.

This gco:ObjectIdentification group is complementary to gco:ObjectReference, which defines the xlink and uuidref attributes to be supported by all metadata wrappers in the private org.apache.sis.internal.jaxb.metadata package and sub-packages.

Difference between gml:id and gco:uuid

The GML identifiers page said:

However, according the OGC/ISO schema, those identifiers seem to be defined in the GCO schema.