16.20 - allocCtx(java.lang.Object tblCtxObj) - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL External Routine Programming

Product
Advanced SQL Engine
Teradata Database
Release Number
16.20
Release Date
April 2020
Content Type
Programming Reference
Publication ID
B035-1147-162K
Language
English (United States)

This method initializes the table function context for the first time with the serialized size of tblCtxObj.

A UDF can use the table function context as a scratchpad to retain data between iterations of a local table function copy.

Argument

If tblCtxObj has object type fields, the UDF must initialize those fields to non-null values before calling allocCtx(). If tblCtxObj has array type fields, the UDF must initialize the array itself and each element of the array to a non-null value before calling allocCtx().

The maximum size of tblCtxObj is 64 KB.