Package com.yahoo.search.grouping.request

Class CatFunction

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.CatFunction

All Implemented Interfaces:

Iterable<GroupingExpression>

public class CatFunction
extends FunctionNode

This class represents a cat-function in a GroupingExpression. It evaluates to a byte array that equals the concatenation of the binary result of all arguments in the order they were given to the constructor.

Author:

Simon Thoresen Hult, bratseth

Constructor Summary

Constructors

Constructor	Description
CatFunction(GroupingExpression arg1, GroupingExpression arg2, GroupingExpression... argN)	Constructs a new instance of this class.

Method Summary

Modifier and Type	Method	Description
CatFunction	copy()	Returns a deep copy of this
static CatFunction	newInstance(List<GroupingExpression> args)	Constructs a new instance of this class from a list of arguments.

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 Details

CatFunction

public CatFunction(GroupingExpression arg1,
 GroupingExpression arg2,
 GroupingExpression... argN)

Constructs a new instance of this class.

Parameters:

arg1 - The first compulsory argument.

arg2 - The second compulsory argument.

argN - The optional arguments.

Method Details

copy

public CatFunction copy()

Description copied from class: GroupingExpression

Returns a deep copy of this

Specified by:

copy in class GroupingExpression

newInstance

public static CatFunction newInstance(List<GroupingExpression> args)

Constructs a new instance of this class from a list of arguments.

Parameters:

args - The arguments to pass to the constructor.

Returns:

The created instance.

Throws:

IllegalArgumentException - Thrown if the number of arguments is less than 2.