org.hypergraphdb.query

Class IsCondition

java.lang.Object

org.hypergraphdb.query.IsCondition

All Implemented Interfaces:

HGAtomPredicate, HGQueryCondition

public class IsCondition
extends Object
implements HGQueryCondition, HGAtomPredicate

An "identity" condition that evaluates to true for a specific handle. It translates to a result set containing the specified atom handle.

Author:

Borislav Iordanov

Constructor Summary

Constructors

Constructor and Description
IsCondition()
IsCondition(HGHandle atomHandle)
IsCondition(Ref<HGHandle> atomHandle)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object obj)
HGHandle	getAtomHandle()
Ref<HGHandle>	getAtomHandleReference()
int	hashCode()
boolean	satisfies(HyperGraph graph, HGHandle handle) Check whether a given Object satisfies this query condition.
void	setAtomHandle(HGHandle atomHandle)
void	setAtomHandleReference(Ref<HGHandle> atomHandle)

Methods inherited from class java.lang.Object

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

Constructor Detail

IsCondition

public IsCondition()

IsCondition

public IsCondition(Ref<HGHandle> atomHandle)

IsCondition

public IsCondition(HGHandle atomHandle)

Method Detail

getAtomHandleReference

public Ref<HGHandle> getAtomHandleReference()

setAtomHandleReference

public void setAtomHandleReference(Ref<HGHandle> atomHandle)

getAtomHandle

public HGHandle getAtomHandle()

setAtomHandle

public void setAtomHandle(HGHandle atomHandle)

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 Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object