com.pervasive.datarush.functions

Class FunctionUtil

java.lang.Object

com.pervasive.datarush.functions.FunctionUtil

public class FunctionUtil
extends Object

A collection of useful utilities for implementing classes related to functions.

Constructor Summary

Constructors

Constructor and Description
FunctionUtil()

Method Summary

Modifier and Type	Method and Description
static ScalarTokenType	widestInputType(FunctionContext ctx) Returns the widest input type for all ScalarValuedFunction arguments in the context.
static ScalarTokenType	widestInputType(FunctionContext ctx, int... indices) Returns the widest input type for all specified ScalarValuedFunction arguments in the context.

Methods inherited from class java.lang.Object

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

Constructor Detail

FunctionUtil

public FunctionUtil()

Method Detail

widestInputType

public static ScalarTokenType widestInputType(FunctionContext ctx)

Returns the widest input type for all ScalarValuedFunction arguments in the context.

Parameters:

ctx - the processing context

Returns:

the widest of all the input types. If there is no such type (that is, it is TokenTypeConstant.SCALAR), null is returned.

widestInputType

public static ScalarTokenType widestInputType(FunctionContext ctx,
                                              int... indices)

Returns the widest input type for all specified ScalarValuedFunction arguments in the context.

Parameters:

ctx - the processing context

indices - the arguments to use in the calculation

Returns:

the widest of all the specified input types. If there is no such type (that is, it is TokenTypeConstant.SCALAR), null is returned.