org.apache.clerezza.sparql.query

Interface OptionalGraphPattern

All Superinterfaces:

GraphPattern

All Known Implementing Classes:

SimpleOptionalGraphPattern

public interface OptionalGraphPattern
extends GraphPattern

Specifying an optional ImmutableGraph pattern implies the existence of a main ImmutableGraph pattern. The main ImmutableGraph pattern is an empty group pattern if it is not specified.

Author:

hasan

See Also:

SPARQL Query Language: 6 Including Optional Values

Method Summary

Modifier and Type	Method and Description
GraphPattern	getMainGraphPattern()
GroupGraphPattern	getOptionalGraphPattern()

Method Detail

getMainGraphPattern

GraphPattern getMainGraphPattern()

Returns:

the main ImmutableGraph pattern to match

getOptionalGraphPattern

GroupGraphPattern getOptionalGraphPattern()

Returns:

the optional ImmutableGraph pattern to match