Package com.yahoo.search.grouping.request

Class StrCatFunction

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.StrCatFunction

All Implemented Interfaces:

Iterable<GroupingExpression>

public class StrCatFunction
extends FunctionNode

This class represents a strcat-function in a GroupingExpression. It evaluates to a string that equals the contatenation of the string results of all arguments in the order they were given to the constructor.

Author:

Simon Thoresen Hult, bratseth

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
StrCatFunction	copy()	Returns a deep copy of this
static StrCatFunction	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

StrCatFunction

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

Constructs a new instance of this class.

Parameters:

arg1 - The first compulsory argument, must evaluate to a string.

arg2 - The second compulsory argument, must evaluate to a string.

argN - The optional arguments, must evaluate to a string.

Method Details

copy

public StrCatFunction copy()

Description copied from class: GroupingExpression

Returns a deep copy of this

Specified by:

copy in class GroupingExpression

newInstance

public static StrCatFunction 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.