org.apache.solr.client.solrj.io.comp

Class SingleValueComparator

java.lang.Object

org.apache.solr.client.solrj.io.comp.SingleValueComparator

All Implemented Interfaces:

Serializable, Comparator<Tuple>, StreamComparator, Expressible

public class SingleValueComparator
extends Object
implements StreamComparator

An equality Comparator to be used when a stream will only ever return a single field, ie, it has no sorted order

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SingleValueComparator()

Method Summary

Modifier and Type	Method and Description
StreamComparator	append(StreamComparator other)
int	compare(Tuple leftTuple, Tuple rightTuple)
SingleValueComparator	copyAliased(Map<String,String> aliases)
boolean	isDerivedFrom(StreamComparator base)
Explanation	toExplanation(StreamFactory factory) Returns an explanation about the stream object
StreamExpressionParameter	toExpression(StreamFactory factory)

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

SingleValueComparator

public SingleValueComparator()

Method Detail

toExpression

public StreamExpressionParameter toExpression(StreamFactory factory)

Specified by:

toExpression in interface Expressible

toExplanation

public Explanation toExplanation(StreamFactory factory)
                          throws IOException

Description copied from interface: Expressible

Returns an explanation about the stream object

Specified by:

toExplanation in interface Expressible

Parameters:

factory - Stream factory for this, contains information about the function name

Returns:

Explanation about this stream object containing explanations of any child stream objects

Throws:

IOException - throw on any error

compare

public int compare(Tuple leftTuple,
                   Tuple rightTuple)

Specified by:

compare in interface Comparator<Tuple>

isDerivedFrom

public boolean isDerivedFrom(StreamComparator base)

Specified by:

isDerivedFrom in interface StreamComparator

copyAliased

public SingleValueComparator copyAliased(Map<String,String> aliases)

Specified by:

copyAliased in interface StreamComparator

append

public StreamComparator append(StreamComparator other)

Specified by:

append in interface StreamComparator