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ProvSQL C/C++ API
Adding support for provenance and uncertainty management to PostgreSQL databases
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A registered family's descriptor: its complete identity. More...
#include "Distribution.h"
Public Attributes | |
| const char * | name |
| unsigned | nparams |
| 1 or 2 (a 1-parameter family leaves p2 = 0) | |
| const char * | label |
| const char * | param_names [2] |
| DistributionFactory | factory |
A registered family's descriptor: its complete identity.
name is the on-disk token (the part before the colon in a gate_rv extra); factory constructs an instance from the parsed parameters; label / param_names are the display metadata UI clients (ProvSQL Studio) read through provsql.rv_families() – a short glance-recognisable glyph for a node circle (e.g. "N", "Exp", "Γ") and the conventional parameter symbols in extra order (e.g. {"μ", "σ"}; the second entry is nullptr for a 1-parameter family). Purely presentational choices beyond these (colours, geometry) stay client-side.
Each family implementation file defines exactly ONE descriptor with static storage duration and registers its address, so the pointer is an interned family identity (this is what DistributionSpec and Distribution::family() carry; there is no family enum to extend).
Definition at line 286 of file Distribution.h.
| DistributionFactory provsql::DistributionFamily::factory |
Definition at line 291 of file Distribution.h.
| const char* provsql::DistributionFamily::label |
Definition at line 289 of file Distribution.h.
| const char* provsql::DistributionFamily::name |
Definition at line 287 of file Distribution.h.
| unsigned provsql::DistributionFamily::nparams |
1 or 2 (a 1-parameter family leaves p2 = 0)
Definition at line 288 of file Distribution.h.
| const char* provsql::DistributionFamily::param_names[2] |
Definition at line 290 of file Distribution.h.