[jira] Commented: (IBATIS-155) Dependencies for statements in sql-Maps

["Larry Meadors (JIRA)" <ib...@incubator.apache.org>]

    [ http://issues.apache.org/jira/browse/IBATIS-155?page=comments#action_12313695 ] 

Larry Meadors commented on IBATIS-155:
--------------------------------------

Can you provide more explanation of this?

I am unclear as to why anyone would ever need this...

> Dependencies for statements in sql-Maps
> ---------------------------------------
>
>          Key: IBATIS-155
>          URL: http://issues.apache.org/jira/browse/IBATIS-155
>      Project: iBatis for Java
>         Type: New Feature
>   Components: SQL Maps
>  Environment: all
>     Reporter: Steffen Legler
>     Priority: Minor

>
> i am using ibatis with ~120 sql-Maps.
> When a java object arrives, the software should call in most cases a select and update statement. This works fine.
> But there are other cases, where the software should call for example an insert statement before calling an update-statetement.
> I think it would be useful, if there is an attribute like depends added to the xml-tags statement, insert, update, delete, so that ibatis automatically executes the insert statement when calling the update-statement. 
> For example:
> 	<insert id="insert" parameterClass="class1">
> 		insert into....
> 	</insert>
>   	<update id="update" parameterClass="class1" depends="insert">
> 		update ...
> 	</update>
> Java-execute:
>     sqlMapClient.update("namespace:update",class1);
> In this case the software tries to execute the statement "namespace:update" and ibatis executes two statements:
>   namespace:insert
>   namespace.update
> The advantage of this solution is, that you are not depending on the support of multiple sql-Statements from the jdbc-driver.

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