plv8

This Release
plv8 1.5.3
Date
Status
Stable
Other Releases
Abstract
A procedural language in JavaScript powered by V8
Description
plv8 is a trusted procedural language that is safe to use, fast to run and easy to develop.
Released By
jerrysv
License
PostgreSQL
Resources
Special Files
Tags

Extensions

plcoffee 1.5.3
A procedural language in CoffeeScript
plls 1.5.3
A procedural language in LiveScript
plv8 1.5.3
A procedural language in JavaScript

README

A Procedural Language in JavaScript powered by V8

plv8 is a shared library that provides a PostgreSQL procedural language powered by V8 JavaScript Engine. With this program you can write in JavaScript your function that is callable from SQL.

REQUIREMENT

plv8 is tested with:

  • PG: version 9.2, 9.3, 9.4 and 9.5 (maybe older/newer are allowed)
  • V8: version 4.2 - 4.3.66 (as of v1.5.0)
  • g++: version 4.8.2
  • clang++

It is also known to work with some older versions of gcc and v8.

Also all tools that PostgreSQL and V8 require to be built are required if you are building those from source.

INSTALL

There are two ways to build plv8. The first is default make, which depends on system-installed libv8 and plv8 will be dynamically link to it. The second is make static, which will download v8 source at a specific version and build it, and statically link plv8 to it. PGXN install will use the former, while you can do the latter manually if you have not installed v8 yet.

Once you installed plv8 into your dabase, create language via

$ psql -c 'CREATE EXTENSION plv8' $ psql -c 'CREATE EXTENSION plls' $ psql -c 'CREATE EXTENSION plcoffee'

in 9.1 or later, or in the prior versions

$ psql -f plv8.sql

to create database objects.

In mingw64, you may have difficulty in building plv8. If so, try to make the following changes in Makefile.

CUSTOM_CC = gcc SHLIB_LINK := $(SHLIB_LINK) -lv8 -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic -lm

For more detail, please refer to https://github.com/plv8/plv8/issues/29

TEST

plv8 supports installcheck test. Make sure set custom_variable_classes = 'plv8' in your postgresql.conf (before 9.2) and run

$ make installcheck

EXAMPLE (JAVASCRIPT)

``` CREATE OR REPLACE FUNCTION plv8_test(keys text[], vals text[]) RETURNS text AS $$ var o = {}; for(var i=0; i