Hewlett-packard Development Company, L.p.

Hewlett Packard Enterprise Development LP

Hongmin Fan

Lakshmikant Shrinivas

Charles Edward Bear

Andrew Allinson Lamb

William Frederick Mann, Iii

Matthew Steven Fuller

Andrew Allison Lamb

Mingsheng Hong

Neil Earnest Chao

In an example, an analytic function to be performed on data stored in an input block is managed through an interface to a framework through which a user is to define the analytic function. The framework is to buffer batches of the data into a memory through implementation of a Reader, a Writer, a PreReader, and a PreWriter on the data stored in the input block when the user-defined analytic function is performed, and wherein the Reader, the Writer, the PreReader, and the PreWriter are individually movable with respect to each other in the input block. In addition, the user-defined analytic function is received through the interface.

Managing an analytic function to be performed on data stored in an input block

According to an example, in a method for executing a user-defined function on a plurality of database tuples, the user-defined function and an analysis function may be obtained. In addition, the plurality of database tuples may be divided into parts by a processor, the processor may be caused to execute the analysis function on each of the parts, and the processor may be caused to execute the user-defined function on at least one of the parts for which the analysis function returned a true predicate.

Executing user-defined function on a plurality of database tuples

A record-pattern expression of a record pattern of data records is translated to a character-pattern expression of a character pattern. A data-record series of data records is converted to a character string in which each character in the character string corresponds to a respective data record in the data-record series. Pattern instances of the character pattern in the character string are searched to identify ordinal character positions in the character string of characters in the character pattern instances. Data records at ordinal record positions in the record series of data records corresponding to the ordinal character positions are reported.

Data-record pattern searching

A method for executing a user-defined function on a plurality of input database tuples. The method may include causing a processor to invoke the function once; and to compute results of the function for the plurality of database tuples.

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Arlington, MA, United States of America

Hongmin Fan