[jira] [Commented] (GEODE-8626) Omitting field-mapping tag of cache.xml when using Simple JDBC Connector

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GEODE-8626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17276452#comment-17276452 ] 

ASF GitHub Bot commented on GEODE-8626:
---------------------------------------

masaki-yamakawa commented on pull request #5637:
URL: https://github.com/apache/geode/pull/5637#issuecomment-770988583


   @agingade 
   Thanks for your comment.
   
   I am using "Peer-to-Peer Configuration" to build the application. Specifically, it is an application that integrates Tomcat and Geode.
   It achieves high-performance by managing data in the App heap (Geode). Then, the data in Geode is persisted to RDB asynchronously.
   
   I understand that gfsh and cluster configuration Import/Export can be used in this configuration. However, I would like to avoid this method because of the complication in operation and the risk of mistakes.
   Thus I want a configuration file that reads the region definition when the App is launched.
   Nowadays, yml, json and annotations are commonly used.
   Geode does not support these, so I chose to use XML.
   * I know SpringData For ApacheGeode, but I don't use it because I want to use Geode's native API.


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> Omitting field-mapping tag of cache.xml when using Simple JDBC Connector
> ------------------------------------------------------------------------
>
>                 Key: GEODE-8626
>                 URL: https://issues.apache.org/jira/browse/GEODE-8626
>             Project: Geode
>          Issue Type: Improvement
>          Components: jdbc
>            Reporter: Masaki Yamakawa
>            Priority: Minor
>              Labels: pull-request-available
>
> When configuring Simple JDBC Connector with gfsh, I don't need to create field-mapping, the default field-mapping will be created from pdx and table meta data.
> On the other hand, when using cache.xml(cluster.xml), pdx and table meta data cannot be used, and field-mapping must be described in cache.xml.
> I would like to create field-mapping defaults based on pdx and table meta data when using cache.xml.
> If field-mapping is specified in cache.xml, the xml setting has priority, and only if there are no field-mapping tags.
> cache.xml will be as follows:
> {code:java}
> <region name="Region1" refid="REPLICATE">
>     <jdbc:mapping
>             data-source="TestDataSource"
>             table="employees"
>             pdx-name="org.apache.geode.connectors.jdbc.Employee"
>             ids="id">
> <!-- no need to jdbc:field-mapping tag
>         <jdbc:field-mapping pdx-name="id" pdx-type="STRING" jdbc-name="id" jdbc-type="VARCHAR" jdbc-nullable="false"/>
>         <jdbc:field-mapping pdx-name="name" pdx-type="STRING" jdbc-name="name" jdbc-type="VARCHAR" jdbc-nullable="true"/>
>         <jdbc:field-mapping pdx-name="age" pdx-type="INT" jdbc-name="age" jdbc-type="INTEGER" jdbc-nullable="true"/>
> -->
>     </jdbc:mapping>
> </region>
> {code}



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