cql_hooks:cql_update_history_hook/16

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Predicate cql_update_history_hook/16

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cql
- cql

cql_update_history_hook(+Schema, +TableName, +AttributeName, +PrimaryKeyAttributeName, +PrimaryKeyValue, +ApplicationValueBefore, +ApplicationValueAfter, +AccessToken, +UserId, +UserIpAddress, +TransactionId, +TransactionTimestamp, +ThreadId, +Spid, +Connection, +Goal)[multifile, library(cql/cql_hooks)]

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