C++ SDK Documentation
12.0.0
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Contains the classes needed to write User-Defined things in Vertica. More...
Classes | |
struct | Vertica::LibraryRegistrar |
struct | Vertica::UDxRegistrar |
Namespaces | |
Vertica | |
Macros | |
#define | InlineAggregate() |
#define | RegisterFactory(clazz) |
#define | RegisterLibrary(author, library_build_tag, library_version, library_sdk_version, source_url, description, licenses_required, signature) Vertica::LibraryRegistrar registrar(author, library_build_tag, library_version, library_sdk_version, source_url, description, licenses_required, signature) |
Contains the classes needed to write User-Defined things in Vertica.
#define InlineAggregate | ( | ) |
InlineAggregate() is used to implement the virtual function "aggregateArrs()" for AggregateFunctions. This allows aggregate functions to work on blocks at a time. This macro should be called from inside an AggregateFunction - for a reference, check the examples in the example folder.
#define RegisterFactory | ( | clazz | ) |
class | The name of the class to register as a UDx factory. Helper macro for registering UDx's with Vertica |
To use: Extend a subclass of UDXFactory (e.g. ScalarFunctionFactory) and then call RegisterFactory with that class name.
For example:
... class MyFactory : public ScalarFunctionFactory ...