org.apache.tajo.storage

Class BaseTupleComparator

java.lang.Object

org.apache.tajo.storage.TupleComparator

org.apache.tajo.storage.BaseTupleComparator

All Implemented Interfaces:

Comparator<Tuple>, ProtoObject<IndexProtos.TupleComparatorProto>

public class BaseTupleComparator
extends TupleComparator
implements ProtoObject<IndexProtos.TupleComparatorProto>

The Comparator class for Tuples

See Also:

Tuple

Constructor Summary

Constructors

Constructor and Description
BaseTupleComparator(IndexProtos.TupleComparatorProto proto)
BaseTupleComparator(Schema schema, SortSpec[] sortKeys)

Method Summary

Methods

Modifier and Type	Method and Description
int	compare(Tuple tuple1, Tuple tuple2)
boolean	equals(Object obj)
IndexProtos.TupleComparatorProto	getProto()
Schema	getSchema()
int[]	getSortKeyIds()
SortSpec[]	getSortSpecs()
int	hashCode()
boolean	isAscendingFirstKey()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

BaseTupleComparator

public BaseTupleComparator(Schema schema,
                   SortSpec[] sortKeys)

Parameters:

schema - The schema of input tuples

sortKeys - The description of sort keys

BaseTupleComparator

public BaseTupleComparator(IndexProtos.TupleComparatorProto proto)

Method Detail

getSchema

public Schema getSchema()

getSortSpecs

public SortSpec[] getSortSpecs()

getSortKeyIds

public int[] getSortKeyIds()

isAscendingFirstKey

public boolean isAscendingFirstKey()

Specified by:

isAscendingFirstKey in class TupleComparator

compare

public int compare(Tuple tuple1,
          Tuple tuple2)

Specified by:

compare in interface Comparator<Tuple>

Specified by:

compare in class TupleComparator

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Specified by:

equals in interface Comparator<Tuple>

Overrides:

equals in class Object

getProto

public IndexProtos.TupleComparatorProto getProto()

Specified by:

getProto in interface ProtoObject<IndexProtos.TupleComparatorProto>

toString

public String toString()

Overrides:

toString in class Object