org.apache.clerezza.sparql.query

Interface GroupGraphPattern

All Superinterfaces:

GraphPattern

All Known Implementing Classes:

SimpleGroupGraphPattern

public interface GroupGraphPattern
extends GraphPattern

Defines a group ImmutableGraph pattern.

Author:

hasan

See Also:

SPARQL Query Language: 5.2 Group ImmutableGraph Patterns

Method Summary

Modifier and Type	Method and Description
List<Expression>	getFilter()
Set<GraphPattern>	getGraphPatterns()
Set<IRI>	getReferredGraphs()
SelectQuery	getSubSelect()
boolean	isSubSelect()

Method Detail

isSubSelect

boolean isSubSelect()

Returns:

true if it wraps a SelectQuery, false otherwise.

getSubSelect

SelectQuery getSubSelect()

Returns:

the wrapped subselect if it wraps a SelectQuery, null otherwise.

getGraphPatterns

Set<GraphPattern> getGraphPatterns()

Returns:

null if it wraps a SelectQuery, otherwise a set of all patterns, ANDed together.

getReferredGraphs

Set<IRI> getReferredGraphs()

Returns:

all graphs referred in this ImmutableGraph pattern.

getFilter

List<Expression> getFilter()

Returns:

null if it wraps a SelectQuery, otherwise a list of filter expressions for all patterns in the group if any.