com.yahoo.bard.webservice.table.resolver

Class GranularityComparator

java.lang.Object

com.yahoo.bard.webservice.table.resolver.GranularityComparator

All Implemented Interfaces:

Comparator<PhysicalTable>

public class GranularityComparator
extends Object
implements Comparator<PhysicalTable>

Comparator to prefer coarser physical tables (i.e. fewer rows).

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	GranularityComparator() A constructor provided in case other classes need to subclass GranularityComparator.

Method Summary

Modifier and Type	Method and Description
int	compare(PhysicalTable table1, PhysicalTable table2) Compare two physical tables identifying which one has fewer time buckets.
static GranularityComparator	getInstance() Factory method for creating new GranularityComparator instance.

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

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

GranularityComparator

protected GranularityComparator()

A constructor provided in case other classes need to subclass GranularityComparator.

Method Detail

getInstance

public static GranularityComparator getInstance()

Factory method for creating new GranularityComparator instance.

Returns:

a new GranularityComparator instance

compare

public int compare(PhysicalTable table1,
                   PhysicalTable table2)

Compare two physical tables identifying which one has fewer time buckets.

Specified by:

compare in interface Comparator<PhysicalTable>

Parameters:

table1 - The first table

table2 - The second table

Returns:

negative if table1 has coarser grain (i.e. fewer rows per time) than table2