C++ run-time interface for TMUDFs blueprint cmp-tmudf-compile-time-interface
- Support for C++ run-time interface: - A new language, C++ is added to langman, the existing LanguageManagerC handles both C and C++ - Two new parameter styles got added, C++ and Java object-oriented parameter styles. Routines written in C++ use the new object-oriented C++ parameter style. The compiler interface is only supported for that style (and in the future for the Java object-oriented style). - Also added one more compile time interface, the "completeDescription()" call in the generator. Added logic to extract the UDRPlanInfo of the optimal plan. - Changes to UDRInvocationInfo and UDRPlanInfo classes: - UDRInvocationInfo and UDRPlanInfo objects can now be serialized and they are added to generated plans, as part of the UDR TDB. - Split TableInfo into TupleInfo and TableInfo classes. TupleInfo is now the common base class for describing both parameters and input/output tables. - TypeInfo now has offsets for data, null indicator and varchar indicator. - New get<type> and set<type> methods on class TupleInfo, to be used at compile time for parameters and at runtime for parameters, input and output tables. - Added a "call phase" member, to be able to throw exceptions when certain methods are called at the wrong time (e.g. trying to modify compile time members at runtime). - Routine class in langman now has a new subclass, LmRoutineCppObj and a new method, invokeRoutineMethod, that is used to invoke the object-oriented methods, requiring UDRInvocationInfo and UDRPlanInfo as parameters. - Fixed some executor issues with error handling for UDFs, this is still not very well supported - Emitting the EOD row in the UDF is no longer required, and no longer supported or even possible. - UDRPlanInfo is now part of the physical properties, so that we can extract it from the optimal plan. - Disabling TMUDF as the inner of a nested join - for now. We might support this "routine join" at a later time. - regress/udr/TEST001: - SESSIONIZE_STATIC remains in C, but other TMUDFs are now rewritten in C++ (the runtime part that was not yet in C++) - SESSIONIZE_DYNAMIC is now the same as the example on the wiki - regress/udr/TEST002: Added some tests for event log reader UDF, but can't add the part that copies a sample log file, since in Jenkins, we don't have $MY_SQROOT set. Tried the test on my workstation, though. Steve tells me $MY_SQROOT should be available, so in a future checkin I'll enable this code again. - For patch set 2: Removed fix for LP bug 1420539 and addressed other review comments.
SHOWPLAN related changes Reworked the fix for bug 1392522 - mxosrvr core dumped doing showplan (with N.E. enabled), plus other related code changes. 1) The native code (also known as native expression), if generated, is stored in the expression's constant area. SHOWPLAN will dump the native code in the assembly format. The display can be disabled by CQD PCODE_NE_IN_SHOWPLAN to "OFF". It is "ON" by default. This part had been reviewed by Jim Capps and Mike Hanlon. 2) Add several SHOWPLAN statements in core/TEST019 without logging the output. This is to ensure no core generated when getting executor operator (TDBs) info via SHOWPLAN. 3) A temporary fix to ComTdbHbaseAccess::displayRowId(). The current way of retrieving begin or end row IDs from the HbaseScanRows for SHOWPLAN does not match with the way those row IDs are generated (see HbaseAccess::genListsOfRows), causing core dumps in some cases.