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Michael Paquier 2197d06224 Add support for parsing of large XML data (>= 10MB)
This commit adds XML_PARSE_HUGE to the libxml2 functions used in core
for the parsing of XML objects, raising up the original limit of 10MB
supported by libxml2.

In most code paths of upstream, XML_MAX_TEXT_LENGTH (10^7) is the
historical limit that gets upgraded to XML_MAX_HUGE_LENGTH (10^9) once
XML_PARSE_HUGE is given to the parser calls.  These are still limited by
any palloc() calls for text, up to 1GB.

This offers the possibility to handle within the backend XML objects
larger than 10MB in general, with also a higher depth limit.  This
change affects the contrib module xml2, the xml data type and SQL/XML.

Author: Dmitry Koval
Reviewed-by: Tom Lane, Michael Paquier
Discussion: https://postgr.es/m/18274-98d16bc03520665f@postgresql.org
2024-01-17 14:03:55 +09:00
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README

PostgreSQL Database Management System
=====================================

This directory contains the source code distribution of the PostgreSQL
database management system.

PostgreSQL is an advanced object-relational database management system
that supports an extended subset of the SQL standard, including
transactions, foreign keys, subqueries, triggers, user-defined types
and functions.  This distribution also contains C language bindings.

Copyright and license information can be found in the file COPYRIGHT.

General documentation about this version of PostgreSQL can be found at:
https://www.postgresql.org/docs/devel/
In particular, information about building PostgreSQL from the source
code can be found at:
https://www.postgresql.org/docs/devel/installation.html

The latest version of this software, and related software, may be
obtained at https://www.postgresql.org/download/.  For more information
look at our web site located at https://www.postgresql.org/.