omni_types

Overview

Version

Build

You can build the RPM / DEB packages for omnigres using pig build:

pig build pkg omnigres         # build RPM / DEB packages

Install

You can install omnigres directly. First, make sure the PGDG and PIGSTY repositories are added and enabled:

pig repo add pgsql -u          # Add repo and update cache

Install the extension using pig or apt/yum/dnf:

• Install
• pig
• dnf
• apt

pig install omnigres;          # Install for current active PG version

pig ext install -y omnigres -v 18  # PG 18
pig ext install -y omnigres -v 17  # PG 17
pig ext install -y omnigres -v 16  # PG 16
pig ext install -y omnigres -v 15  # PG 15
pig ext install -y omnigres -v 14  # PG 14

dnf install -y omnigres_18       # PG 18
dnf install -y omnigres_17       # PG 17
dnf install -y omnigres_16       # PG 16
dnf install -y omnigres_15       # PG 15
dnf install -y omnigres_14       # PG 14

apt install -y postgresql-18-omnigres   # PG 18
apt install -y postgresql-17-omnigres   # PG 17
apt install -y postgresql-16-omnigres   # PG 16
apt install -y postgresql-15-omnigres   # PG 15
apt install -y postgresql-14-omnigres   # PG 14

Create Extension:

CREATE EXTENSION omni_types;

Usage

omni_types: Advanced types

The omni_types extension provides advanced type utilities, including function signature types that capture complete function signatures and allow direct invocation.

Define a Function Signature Type

Explicit definition:

SELECT omni_types.function_signature_type('sig', 'text', 'int');
-- Creates type 'sig' for functions accepting text and returning int

From existing function:

SELECT omni_types.function_signature_type_of('sig', 'length(text)');

Cast Functions to the Type

SELECT 'length'::sig;

For non-failing validation:

SELECT sig_conforming_function('length');  -- returns NULL if no match

Invoke Typed Functions

SELECT call_sig('length', 'hello');  -- returns 5

The call_<TYPE> function is auto-generated for each signature type and executes the referenced function with the provided arguments.