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https://issues.apache.org/jira/browse/CAY-1946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14213914#comment-14213914
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ASF GitHub Bot commented on CAY-1946:
-------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/cayenne/pull/31
> CDbimport improvements
> ----------------------
>
> Key: CAY-1946
> URL: https://issues.apache.org/jira/browse/CAY-1946
> Project: Cayenne
> Issue Type: Improvement
> Components: Non-GUI Tools
> Reporter: Alex Kolonitsky
>
> We’ve experimented with automated db-first approach to Cayenne modeling for
> more than a year on a set of client projects. Roughly this approach means
> that DB evolution is managed via external tools (e.g. liquibase) and Cayenne
> artifacts are managed using the following POM configuration:
> <plugin>
> <groupId>org.apache.cayenne.plugins</groupId>
> <artifactId>maven-cayenne-plugin</artifactId>
> <configuration>
> ...
> </configuration>
> <executions>
> <execution>
> <id>default-cli</id>
> <goals>
> <goal>cdbimport</goal>
> <goal>cgen</goal>
> </goals>
> </execution>
> </executions>
> </plugin>
> “cdbimport” ensures that Cayenne model is always in sync with DB, “cgen” -
> that Java classes are in sync with the model. There are zero problems with
> “cgen", not so with “cdbimport". If you control the schema, you get a
> decently named Java classes/properties in 95% of the cases. Here we are
> trying to address the remaining 5% that make things ugly:
> * Inability to generate meaningful relationship names in many cases.
> * Inability to customize attribute/relationship names and data types.
> To solve this here we are proposing a merge algorithm that would preserve
> customizations to the Obj* layer made by the user. And in addition to that a
> special descriptor that can be used for more advanced filtering and
> customization of cdbimport process. Both of these improvements will hopefully
> result in “cdbimport” becoming a tool of choice for Cayenne work for many
> users.
> https://docs.google.com/document/d/1DF5-_mMDCuH7iUFhEFDm2q-ebVeSPgvOaymho88ywJ0/edit?pli=1
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