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From "Thomas Fox (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (TORQUE-142) MYSQL - default timestamp set to current_timestamp generates classes incorrectly
Date Fri, 04 May 2012 12:18:48 GMT

     [ https://issues.apache.org/jira/browse/TORQUE-142?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Thomas Fox resolved TORQUE-142.
-------------------------------

       Resolution: Fixed
    Fix Version/s: 4.0

One can now use CURRENT_DATE, CURRENT_TIME and CURRENT_TIMESTAMP as default for Date fields.
Setting the attribute useDatabaseDefaultValue to false or not setting it makes Torque use
the current java time as initial field value when constructing the object and saving it to
the database, not considering the database default.
Setting the attribute useDatabaseDefaultValue to true makes Torque setting the initial field
value to null and using the database default when the object is first saved to the database.
Beware that the default mapping of Torque type Timestamp has changed, it is now mapped to
DATETIME (which does not take CURRENT_TIMESTAMP as default in MySQL). This can be changed
by writing an own PlatformImpl and making it available to the generator on generate time.
                
> MYSQL - default timestamp set to current_timestamp generates classes incorrectly
> --------------------------------------------------------------------------------
>
>                 Key: TORQUE-142
>                 URL: https://issues.apache.org/jira/browse/TORQUE-142
>             Project: Torque
>          Issue Type: Bug
>          Components: Generator
>    Affects Versions: 3.3
>         Environment: Windows
>            Reporter: Sethuraman Ramasubramanian
>            Assignee: Thomas Fox
>             Fix For: 4.0
>
>
> Recently I changed all the tables in my database to include an updated_ts column.
> I have the timestamp column in mysql defined as 
> `updated_ts` TIMESTAMP NOT NULL DEFAULT now() ON UPDATE NOW(), this is the same as 
> `updated_ts` TIMESTAMP NOT NULL DEFAULT current_timestamp ON UPDATE current_timestamp
> When I generate the XML from the DB, I get the below generated. Please look at the last
column.
> <table name="address">
>         <column name="address_id" primaryKey="true" required="true"
>             size="20" type="VARCHAR"/>
>         <column name="address_ln_1" required="true" size="150" type="VARCHAR"/>
>         <column name="address_ln_2" size="150" type="VARCHAR"/>
>         <column name="city" required="true" size="100" type="VARCHAR"/>
>         <column name="state" required="true" size="2" type="CHAR"/>
>         <column name="pincode" required="true" size="8" type="CHAR"/>
>         <column name="email_id" size="100" type="VARCHAR"/>
>         <column default="India" name="country" required="true" size="45" type="VARCHAR"/>
>         <column default="CURRENT_TIMESTAMP" name="updated_ts"
>             required="true" type="TIMESTAMP"/>
>     </table>
> Now when I generate the OM classes I get the Address object generated with the below
line:
>  private Date updatedTs = new Date(CURRENT_TIMESTAMP);
> This results in a compilation error. 
> My questions are:
> 1. Are default timestamp values supported in Torque?
> 2. How about the "on update" clause? If a column has an on update clause, will Torque
ignore it and just send an update statement with the column to the database. This would result
in some issues, for example if I selected a row from the table and changed some values. I
then call save(), then the updated timestamp will not get updated because it already has a
value in it. Is there anyway I can change Torque in a common place to set the value to be
null, if the column name is updated_ts. This would solve this problem.
> Any help is highly appreciated.

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