1/*  Part of SWI-Prolog
    2
    3    Author:        Mike Elston
    4                   Matt Lilley
    5    E-mail:        matt.s.lilley@gmail.com
    6    WWW:           http://www.swi-prolog.org
    7    Copyright (c)  2014, Mike Elston, Matt Lilley
    8    All rights reserved.
    9
   10    Redistribution and use in source and binary forms, with or without
   11    modification, are permitted provided that the following conditions
   12    are met:
   13
   14    1. Redistributions of source code must retain the above copyright
   15       notice, this list of conditions and the following disclaimer.
   16
   17    2. Redistributions in binary form must reproduce the above copyright
   18       notice, this list of conditions and the following disclaimer in
   19       the documentation and/or other materials provided with the
   20       distribution.
   21
   22    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   23    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   24    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   25    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
   26    COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   27    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   28    BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   29    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   30    CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   31    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   32    ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   33    POSSIBILITY OF SUCH DAMAGE.
   34*/
   35
   36/*  PostgreSQL is a trademark of the PostgreSQL Global Development Group.
   37    Microsoft, SQL Server, and Windows are either registered trademarks or
   38    trademarks of Microsoft Corporation in the United States and/or other
   39    countries. SQLite is a registered trademark of Hipp, Wyrick & Company,
   40    Inc in the United States. All other trademarks or registered trademarks
   41    are the property of their respective owners.
   42*/
   43
   44:-module(cql_hooks, [application_value_to_odbc_value_hook/7,
   45                     odbc_value_to_application_value_hook/7,
   46                     cql_update_history_hook/16
   47                     ]).   48
   49:-multifile(odbc_value_to_application_value_hook/7).   50:-multifile(application_value_to_odbc_value_hook/7).

 cql_update_history_hook(+Schema, +TableName, +AttributeName, +PrimaryKeyAttributeName, +PrimaryKeyValue, +ApplicationValueBefore, +ApplicationValueAfter, +AccessToken, +UserId, +UserIpAddress, +TransactionId, +TransactionTimestamp, +ThreadId, +Spid, +Connection, +Goal)

Use this hook predicate to actually record database attribute value changes.

You are free to let this predicate fail or raise an exception - the database layer will ignore both of these eventualities.

Arguments:

Schema	- <atom>
TableName	- <atom> (lower case)
AttributeName	- <atom> (lower case)
PrimaryKeyAttributeName	- <atom> (lower case)
PrimaryKeyValue	- <int>
ApplicationValueBefore	- <domain dependent>
ApplicationValueAfter	- <domain dependent>
AccessToken	- <atom>
UserId	- <atom>
UserIpAddress	- <atom>
TransactionId	- <atom>
TransactionTimestamp	- <t7/7>
ThreadId	- <atom>
Spid	- <int>
Connection	- <opaque>
Goal	- <goal term> The goal passed to pri_db_trans

   91:-multifile(cql_update_history_hook/16).