Interface MappingRelation
- All Known Implementing Classes:
BaseForMappingRelationImpl,MappingOpExtend.MyMappingRelation,MappingOpExtract.MyMappingRelation,MappingOpProject.MyMappingRelation,MappingOpUnion.MyMappingRelation,MappingRelationImplWithColumnLayout,MappingRelationImplWithoutTuples,MappingRelationImplWithTupleLayout
public interface MappingRelation
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Field Summary
Fields -
Method Summary
Modifier and TypeMethodDescriptionReturns the set of attributes for which the tuples in this relation have values.
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Field Details
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errorNode
static final org.apache.jena.graph.Node errorNodeTo be used as the error symbol in mapping relations. -
sAttr
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pAttr
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oAttr
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gAttr
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spogAttrs
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Method Details
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getSchema
Returns the set of attributes for which the tuples in this relation have values. The returned list can be assumed to be duplicate free.The order of the attributes in the returned list is relevant when accessing the values of the tuples via a cursor for this relation (see
MappingRelationCursor.getValueOfCurrentTuple(int)). -
getCursor
MappingRelationCursor getCursor()
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