postgresql/contrib
Tom Lane 936c4af1c6 Fix up memory management problems in contrib/xml2.
Get rid of the code that attempted to funnel libxml2's memory allocations
into palloc.   We already knew from experience with the core xml datatype
that trying to do this is simply not reliable.  Unlike the core code, I
did not bother adding a lot of PG_TRY/PG_CATCH logic to try to ensure that
everything is cleaned up on error exit.  Hence, we might leak some memory
if one of these functions fails partway through.  Given the deprecated
status of this contrib module and the fact that errors partway through
the functions shouldn't be too common, it doesn't seem worth worrying about.

Also fix a separate bug in xpath_table, that it did the wrong things
if given a result tuple descriptor with less than 2 columns.  While
such a case isn't very useful in practice, we shouldn't fail or stomp
memory when it occurs.

Add some simple regression tests based on all the reported crash cases
that I have on hand.

This should be back-patched, but let's see if the buildfarm likes it first.
2010-02-28 21:31:57 +00:00
..
adminpack Update copyright for the year 2010. 2010-01-02 16:58:17 +00:00
auto_explain pgindent run for 9.0 2010-02-26 02:01:40 +00:00
btree_gin Remove all the special-case code for INT64_IS_BUSTED, per decision that 2010-01-07 04:53:35 +00:00
btree_gist pgindent run for 9.0 2010-02-26 02:01:40 +00:00
chkpass
citext
cube
dblink pgindent run for 9.0 2010-02-26 02:01:40 +00:00
dict_int Update copyright for the year 2010. 2010-01-02 16:58:17 +00:00
dict_xsyn pgindent run for 9.0 2010-02-26 02:01:40 +00:00
earthdistance
fuzzystrmatch Update copyright for the year 2010. 2010-01-02 16:58:17 +00:00
hstore pgindent run for 9.0 2010-02-26 02:01:40 +00:00
intagg Rewrite intagg/Makefile from scratch, to avoid copyright mention. 2010-02-05 03:06:30 +00:00
intarray
isn pgindent run for 9.0 2010-02-26 02:01:40 +00:00
lo
ltree Allow zero-dimensional (ie, empty) arrays in contrib/ltree operations. 2010-02-24 18:02:24 +00:00
oid2name pgindent run for 9.0 2010-02-26 02:01:40 +00:00
pageinspect Update copyright for the year 2010. 2010-01-02 16:58:17 +00:00
passwordcheck pgindent run for 9.0 2010-02-26 02:01:40 +00:00
pg_buffercache
pg_freespacemap
pg_standby pgindent run for 9.0 2010-02-26 02:01:40 +00:00
pg_stat_statements pgindent run for 9.0 2010-02-26 02:01:40 +00:00
pg_trgm
pgbench pgindent run for 9.0 2010-02-26 02:01:40 +00:00
pgcrypto
pgrowlocks
pgstattuple
seg
spi
sslinfo
start-scripts Modify freebsd start script to just exit 0 with message. 2010-02-23 22:17:25 +00:00
tablefunc Update copyright for the year 2010. 2010-01-02 16:58:17 +00:00
test_parser Update copyright for the year 2010. 2010-01-02 16:58:17 +00:00
tsearch2 Create an official API function for C functions to use to check if they are 2010-02-08 20:39:52 +00:00
unaccent pgindent run for 9.0 2010-02-26 02:01:40 +00:00
uuid-ossp Update copyright for the year 2010. 2010-01-02 16:58:17 +00:00
vacuumlo Stamp HEAD as 9.0devel, and update various places that were referring to 8.5 2010-02-17 04:19:41 +00:00
xml2 Fix up memory management problems in contrib/xml2. 2010-02-28 21:31:57 +00:00
contrib-global.mk
Makefile
README

The PostgreSQL contrib tree
---------------------------

This subtree contains porting tools, analysis utilities, and plug-in
features that are not part of the core PostgreSQL system, mainly because
they address a limited audience or are too experimental to be part of
the main source tree.  This does not preclude their usefulness.

User documentation for each module appears in the main SGML documentation.

Most items can be built with `gmake all' and installed with
`gmake install' in the usual fashion, after you have run the `configure'
script in the top-level directory.  Some directories supply new
user-defined functions, operators, or types.  In these cases, after you have
installed the files you need to register the new entities in the database
system by running the commands in the supplied .sql file.  For example,

	$ psql -d dbname -f module.sql

See the PostgreSQL documentation for more information about this
procedure.


Index:
------

adminpack -
	File and log manipulation routines, used by pgAdmin
	by Dave Page <dpage@vale-housing.co.uk>

auto_explain -
	Log EXPLAIN output for long-running queries
	by Takahiro Itagaki <itagaki.takahiro@oss.ntt.co.jp>

btree_gin -
	Support for emulating BTREE indexing in GIN
	by Oleg Bartunov <oleg@sai.msu.su> and Teodor Sigaev <teodor@sigaev.ru>

btree_gist -
	Support for emulating BTREE indexing in GiST
	by Oleg Bartunov <oleg@sai.msu.su> and Teodor Sigaev <teodor@sigaev.ru>

chkpass -
	An auto-encrypted password datatype
	by D'Arcy J.M. Cain <darcy@druid.net>

citext -
	A case-insensitive character string datatype
	by David E. Wheeler <david@kineticode.com>

cube -
	Multidimensional-cube datatype (GiST indexing example)
	by Gene Selkov, Jr. <selkovjr@mcs.anl.gov>

dblink -
	Allows remote query execution
	by Joe Conway <mail@joeconway.com>

dict_int -
	Text search dictionary template for integers
	by Sergey Karpov <karpov@sao.ru>

dict_xsyn -
	Text search dictionary template for extended synonym processing
	by Sergey Karpov <karpov@sao.ru>

earthdistance -
	Functions for computing distances between two points on Earth
        by Bruno Wolff III <bruno@wolff.to> and Hal Snyder <hal@vailsys.com>

fuzzystrmatch -
	Levenshtein, metaphone, and soundex fuzzy string matching
	by Joe Conway <mail@joeconway.com> and Joel Burton <jburton@scw.org>

hstore -
	Module for storing (key, value) pairs
	by Oleg Bartunov <oleg@sai.msu.su> and Teodor Sigaev <teodor@sigaev.ru>

intagg -
	Integer aggregator
	by mlw <markw@mohawksoft.com>

intarray -
	Index support for arrays of int4, using GiST
	by Teodor Sigaev <teodor@sigaev.ru> and Oleg Bartunov <oleg@sai.msu.su>

isn -
	PostgreSQL type extensions for ISBN, ISSN, ISMN, EAN13 product numbers
	by Germ<72>n M<>ndez Bravo (Kronuz) <kronuz@hotmail.com>

lo -
	Large Object maintenance
	by Peter Mount <peter@retep.org.uk> 

ltree -
	Tree-like data structures
	by Teodor Sigaev <teodor@sigaev.ru> and Oleg Bartunov <oleg@sai.msu.su>

oid2name - 
	Maps numeric files to table names
	by B Palmer <bpalmer@crimelabs.net>

pageinspect -
	Allows inspection of database pages
	Heikki Linnakangas <heikki@enterprisedb.com>

passwordcheck -
	Simple password strength checker
	Laurenz Albe <laurenz.albe@wien.gv.at>

pg_buffercache -
	Real time queries on the shared buffer cache
	by Mark Kirkwood <markir@paradise.net.nz>

pg_freespacemap -
	Displays the contents of the free space map (FSM)
	by Mark Kirkwood <markir@paradise.net.nz>

pg_standby -
	Sample archive_command for warm standby operation
	by Simon Riggs <simon@2ndquadrant.com>

pg_stat_statements -
	Track statement execution times across a whole database cluster
	by Takahiro Itagaki <itagaki.takahiro@oss.ntt.co.jp>

pg_trgm -
	Functions for determining the similarity of text based on trigram
	matching.
	by Oleg Bartunov <oleg@sai.msu.su> and Teodor Sigaev <teodor@sigaev.ru>

pgbench -
	TPC-B like benchmarking tool
	by Tatsuo Ishii <ishii@sraoss.co.jp>

pgcrypto -
	Cryptographic functions
	by Marko Kreen <marko@l-t.ee>

pgrowlocks -
	A function to return row locking information
	by Tatsuo Ishii <ishii@sraoss.co.jp>

pgstattuple -
	Functions to return statistics about "dead" tuples and free
	space within a table
	by Tatsuo Ishii <ishii@sraoss.co.jp>

seg -
	Confidence-interval datatype (GiST indexing example)
	by Gene Selkov, Jr. <selkovjr@mcs.anl.gov>

spi -
	Various trigger functions, examples for using SPI.

sslinfo -
	Functions to get information about SSL certificates
	by Victor Wagner <vitus@cryptocom.ru>

start-scripts - 
	Scripts for starting the server at boot time on various platforms.

tablefunc -
	Examples of functions returning tables
	by Joe Conway <mail@joeconway.com>

test_parser -
	Sample text search parser
	by Sergey Karpov <karpov@sao.ru>

tsearch2 -
	Compatibility package for the pre-8.3 implementation of text search.
	Pavel Stehule <pavel.stehule@gmail.com>, based on code originally by
	Teodor Sigaev <teodor@sigaev.ru> and Oleg Bartunov <oleg@sai.msu.su>.

unaccent -
	Unaccent dictionary for text search
	Teodor Sigaev <teodor@sigaev.ru> and Oleg Bartunov <oleg@sai.msu.su>.

uuid-ossp -
	UUID generation functions
	by Peter Eisentraut <peter_e@gmx.net>

vacuumlo -
	Remove orphaned large objects
	by Peter T Mount <peter@retep.org.uk>

xml2 -
	Storing XML in PostgreSQL
	by John Gray <jgray@azuli.co.uk>