Package com.yahoo.searchlib.expression

Class XorBitFunctionNode

java.lang.Object

com.yahoo.vespa.objects.Selectable

com.yahoo.vespa.objects.Identifiable

com.yahoo.searchlib.expression.ExpressionNode

com.yahoo.searchlib.expression.FunctionNode

com.yahoo.searchlib.expression.MultiArgFunctionNode

com.yahoo.searchlib.expression.UnaryFunctionNode

com.yahoo.searchlib.expression.UnaryBitFunctionNode

com.yahoo.searchlib.expression.XorBitFunctionNode

All Implemented Interfaces:

Serializable, Cloneable

public class XorBitFunctionNode
extends UnaryBitFunctionNode

This function is a request to bitwise XOR the result of its first argument with itself in chunks of the second argument number of bits. If the result to XOR is a 24 bit value, and the second argument is 8, this function will XOR the first 8 bits of the result with the next 8 bits of the result, and then XOR that number with the next 8 bits of the result.

Author:

baldersheim, Simon Thoresen Hult

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final int	classId

Constructor Summary

Constructors

Constructor	Description
XorBitFunctionNode()	Constructs an empty result node.
XorBitFunctionNode(ExpressionNode arg, int numBits)	Constructs an instance of this class with given argument and number of bits.

Method Summary

Modifier and Type	Method	Description
protected int	onGetClassId()

Methods inherited from class com.yahoo.searchlib.expression.UnaryBitFunctionNode

equalsUnaryFunction, getNumBits, hashCode, onDeserialize, onSerialize, setNumBits, visitMembers

Methods inherited from class com.yahoo.searchlib.expression.UnaryFunctionNode

equalsMultiArgFunction, getArg, onPrepare, onPrepareResult

Methods inherited from class com.yahoo.searchlib.expression.MultiArgFunctionNode

addArg, clone, equalsFunction, getArg, getNumArgs, onCalculate, onExecute, selectMembers

Methods inherited from class com.yahoo.searchlib.expression.FunctionNode

equalsExpression, getResult, setResult

Methods inherited from class com.yahoo.searchlib.expression.ExpressionNode

equals, execute, executeIterative, onArgument, prepare

Methods inherited from class com.yahoo.vespa.objects.Identifiable

create, createFromId, deserialize, deserializeOptional, deserializeWithId, equals, getClassId, getRawUtf8Bytes, getUtf8, putUtf8, registerClass, serialize, serializeOptional, serializeWithId, toString

Methods inherited from class com.yahoo.vespa.objects.Selectable

select, select

Methods inherited from class java.lang.Object

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

Field Details

classId

public static final int classId

Constructor Details

XorBitFunctionNode

public XorBitFunctionNode()

Constructs an empty result node. NOTE: This instance is broken until non-optional member data is set.

XorBitFunctionNode

public XorBitFunctionNode(ExpressionNode arg,
 int numBits)

Constructs an instance of this class with given argument and number of bits.

Parameters:

arg - The argument for this function.

numBits - The number of bits to operate on.

Method Details

onGetClassId

protected int onGetClassId()

Overrides:

onGetClassId in class UnaryBitFunctionNode