org.hypergraphdb.query

Class AtomValueCondition

java.lang.Object

org.hypergraphdb.query.SimpleValueCondition

org.hypergraphdb.query.AtomValueCondition

All Implemented Interfaces:

HGAtomPredicate, HGQueryCondition

Direct Known Subclasses:

TypedValueCondition, ValueAsPredicateOnly

public class AtomValueCondition
extends SimpleValueCondition

The AtomValueCondition represents a query condition on the atom value. The condition specifies a comparison operator and value to compare against. The possible comparison operators are the constants listed in the ComparisonOperator class. The value compared against must be of a recognizable HGAtomType.

Author:

Borislav Iordanov

Field Summary

Fields inherited from class org.hypergraphdb.query.SimpleValueCondition

operator, value

Constructor Summary

Constructors

Constructor and Description
AtomValueCondition()
AtomValueCondition(Object value)
AtomValueCondition(Object value, ComparisonOperator operator)
AtomValueCondition(Ref<Object> value, ComparisonOperator operator)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object x)
int	hashCode()
boolean	satisfies(HyperGraph hg, HGHandle handle) Check whether a given Object satisfies this query condition.
String	toString()

Methods inherited from class org.hypergraphdb.query.SimpleValueCondition

compareToValue, getOperator, getValue, getValueReference, setOperator, setValue, setValueReference

Methods inherited from class java.lang.Object

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

Constructor Detail

AtomValueCondition

public AtomValueCondition()

AtomValueCondition

public AtomValueCondition(Object value)

AtomValueCondition

public AtomValueCondition(Ref<Object> value,
                  ComparisonOperator operator)

AtomValueCondition

public AtomValueCondition(Object value,
                  ComparisonOperator operator)

Method Detail

satisfies

public boolean satisfies(HyperGraph hg,
                HGHandle handle)

Description copied from interface: HGAtomPredicate

Check whether a given Object satisfies this query condition.

Parameters:

hg - 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.

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class SimpleValueCondition

equals

public boolean equals(Object x)

Overrides:

equals in class SimpleValueCondition