org.hypergraphdb.query
Class AtomProjectionCondition

java.lang.Object
  org.hypergraphdb.query.AtomProjectionCondition

All Implemented Interfaces:

HGAtomPredicate, HGQueryCondition

public class AtomProjectionCondition
extends java.lang.Object
implements HGQueryCondition, HGAtomPredicate

An AtomProjectionCondition will yield all atoms that are projections along a certain dimension of a given base atom set. The base atom set is specified as a HGQueryCondition.

Author:

Borislav Iordanov

Constructor Summary

AtomProjectionCondition()

AtomProjectionCondition(java.lang.String[] dimensionPath, HGQueryCondition baseSetCondition)

AtomProjectionCondition(java.lang.String dimensionPath, HGQueryCondition baseSetCondition)

Method Summary

boolean	equals(java.lang.Object x)
HGQueryCondition	getBaseSetCondition()
java.lang.String[]	getDimensionPath()
int	hashCode()
boolean	satisfies(HyperGraph graph, HGHandle handle) Check whether a given Object satisfies this query condition.
void	setBaseSetCondition(HGQueryCondition baseSetCondition)
void	setDimensionPath(java.lang.String[] dimensionPath)

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AtomProjectionCondition

public AtomProjectionCondition()

AtomProjectionCondition

public AtomProjectionCondition(java.lang.String dimensionPath,
                               HGQueryCondition baseSetCondition)

AtomProjectionCondition

public AtomProjectionCondition(java.lang.String[] dimensionPath,
                               HGQueryCondition baseSetCondition)

Method Detail

getDimensionPath

public java.lang.String[] getDimensionPath()

getBaseSetCondition

public HGQueryCondition getBaseSetCondition()

satisfies

public boolean satisfies(HyperGraph graph,
                         HGHandle handle)

Description copied from interface: HGAtomPredicate

Check whether a given Object satisfies this query condition.

Specified by:

satisfies in interface HGAtomPredicate

Parameters:

graph - The HyperGraph instance.

handle - The atom on which to test the query condition.

Returns:

true if the passed in parameter satisfies the condition and false otherwise.

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object x)

Overrides:

equals in class java.lang.Object

setDimensionPath

public void setDimensionPath(java.lang.String[] dimensionPath)

setBaseSetCondition

public void setBaseSetCondition(HGQueryCondition baseSetCondition)