Package com.yahoo.search.grouping.request

Class XorBitFunction

java.lang.Object

com.yahoo.search.grouping.request.GroupingNode

com.yahoo.search.grouping.request.GroupingExpression

com.yahoo.search.grouping.request.FunctionNode

com.yahoo.search.grouping.request.XorBitFunction

All Implemented Interfaces:

java.lang.Iterable<GroupingExpression>

public class XorBitFunction
extends FunctionNode

This class represents an xor-function in a GroupingExpression. It evaluates to a long that equals the xor of 'width' bits over the binary representation of the result of the argument.

Author:

Simon Thoresen Hult, bratseth

Constructor Summary

Constructors

Constructor	Description
XorBitFunction(GroupingExpression exp, int numBits)	Constructs a new instance of this class.

Method Summary

Modifier and Type	Method	Description
XorBitFunction	copy()	Returns a deep copy of this
int	getNumBits()	Returns the number of bits of the expression value to xor.

Methods inherited from class com.yahoo.search.grouping.request.FunctionNode

args, asList, asList, asList, getArg, getNumArgs, iterator, resolveLevel, visit

Methods inherited from class com.yahoo.search.grouping.request.GroupingExpression

asImage, asString, getLevel, getLevelOrNull, setLabel

Methods inherited from class com.yahoo.search.grouping.request.GroupingNode

getImage, getLabel, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

XorBitFunction

public XorBitFunction(GroupingExpression exp,
                      int numBits)

Constructs a new instance of this class.

Parameters:

exp - The expression to evaluate.

numBits - The number of bits of the expression value to xor.

Method Detail

copy

public XorBitFunction copy()

Description copied from class: GroupingExpression

Returns a deep copy of this

Specified by:

copy in class GroupingExpression

getNumBits

public int getNumBits()

Returns the number of bits of the expression value to xor.

Returns:

The bit count.