org.apache.clerezza.rdf.core.sparql.query

Class PatternExistenceCondition

java.lang.Object

org.apache.clerezza.rdf.core.sparql.query.BuiltInCall

org.apache.clerezza.rdf.core.sparql.query.PatternExistenceCondition

All Implemented Interfaces:

Expression

public class PatternExistenceCondition
extends BuiltInCall

This expression is intended to be used as a filter expression to test whether a graph pattern matches the dataset or not, given the values of variables in the group graph pattern in which the filter occurs. It does not generate any additional bindings.

Author:

hasan

See Also:

SPARQL 1.1 Query Language: 8.1 Filtering Using Graph Patterns

Field Summary

Fields inherited from class org.apache.clerezza.rdf.core.sparql.query.BuiltInCall

name

Constructor Summary

Constructors

Constructor and Description
PatternExistenceCondition()
PatternExistenceCondition(String name, List<Expression> arguments)

Method Summary

Methods

Modifier and Type	Method and Description
GroupGraphPattern	getPattern()
boolean	isExistenceTest()
void	setExistenceTest(boolean existenceTest)
void	setPattern(GroupGraphPattern pattern)

Methods inherited from class org.apache.clerezza.rdf.core.sparql.query.BuiltInCall

getArguements, getName

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PatternExistenceCondition

public PatternExistenceCondition()

PatternExistenceCondition

public PatternExistenceCondition(String name,
                         List<Expression> arguments)

Method Detail

isExistenceTest

public boolean isExistenceTest()

getPattern

public GroupGraphPattern getPattern()

setExistenceTest

public void setExistenceTest(boolean existenceTest)

setPattern

public void setPattern(GroupGraphPattern pattern)