Allocates and initializes the aggregate intermediate storage area according to the serialized size of the obj input argument.
An aggregate UDF uses this method in the Phase.AGR_INIT phase of aggregation.
Syntax
initCtx(java.lang.Object obj)
Syntax Elements
- obj
- Object whose serialized size the function uses to allocate and initialize the aggregate intermediate storage area.
Exceptions
If the serialized size of obj is larger than the size specified in the CLASS AGGREGATE clause of the CREATE FUNCTION or REPLACE FUNCTION statement for the UDF, initCtx() throws an SQLException to indicate that aggregate storage allocation failed because requested size is too big. The SQLException fields are set to the following values.
SQLState Field | vendorCode Field |
---|---|
“TS000” | 7843 |