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https://issues.apache.org/jira/browse/IBATIS-425?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12494936
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adamb commented on IBATIS-425:
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There is some info somewhere on how to override some IBatis classes to get lazy
loading of sql maps (on a per sqlmap basis) We have done this for our project
and it works very well.
> Improving startup time (Dynamically loading SQL maps based on namespace)
> ------------------------------------------------------------------------
>
> Key: IBATIS-425
> URL: https://issues.apache.org/jira/browse/IBATIS-425
> Project: iBatis for Java
> Issue Type: Improvement
> Components: SQL Maps
> Affects Versions: 2.3.0
> Environment: Windows XP/Oracle 10g
> Reporter: Tyler Van Gorder
>
> We have a very large schema (400+ Tables) and we are using a code generator
> to create SQLmaps and value objects for each table. This gives us a boiler
> plate map for CRUD operations for every table in the system. The problem is
> that it is taking 11 seconds to parse/load all the SQL maps. We had a similar
> problem when we used hibernate and eventually added a patch to load the
> configuration dynamically as it was used for the first time in the
> application. Why do we want to do this? Well, it significantly speeds up the
> development/unit testing cycle. I know that 11 seconds is not horrible, but
> it does add up if you are running your unit tests 50-60 times a day * 5
> developers.
> How hard would it be to add a "namespace" attribute in the sqlMap entries in
> the sqlMapConfig and then read all SqlMap entries into a hashmap where the
> key is the names pace. Then as the application asks for a statement/query
> from the SQLmap, if the name space of the statement has not yet been loaded,
> parse the SQL MAP keyed to the name space.
> That way you get dynamic loading of the SQL maps as their name spaces are
> encountered in the application.
>
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