org.apache.jackrabbit.core.query.lucene.join
Class ValueComparator

java.lang.Object
  org.apache.jackrabbit.core.query.lucene.join.ValueComparator

All Implemented Interfaces:

Comparator<Value>

public class ValueComparator
extends Object
implements Comparator<Value>

Comparator for Value instances.

Constructor Summary

ValueComparator()

Method Summary

int	compare(Value a, Value b) Compares two values.
boolean	evaluate(String operator, Value[] a, Value[] b) Evaluates the given QOM comparison operation with the given value arrays.
boolean	evaluate(String operator, Value a, Value b) Evaluates the given QOM comparison operation with the given values.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

equals

Constructor Detail

ValueComparator

public ValueComparator()

Method Detail

compare

public int compare(Value a,
                   Value b)

Compares two values.

Specified by:

compare in interface Comparator<Value>

evaluate

public boolean evaluate(String operator,
                        Value a,
                        Value b)

Evaluates the given QOM comparison operation with the given values.

Parameters:

operator - QOM comparison operator

a - left value

b - right value

Returns:

result of the comparison

evaluate

public boolean evaluate(String operator,
                        Value[] a,
                        Value[] b)

Evaluates the given QOM comparison operation with the given value arrays.

Parameters:

operator - QOM comparison operator

a - left values

b - right values

Returns:

result of the comparison