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https://issues.apache.org/jira/browse/CAY-1946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14116793#comment-14116793
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ASF GitHub Bot commented on CAY-1946:
-------------------------------------
GitHub user AlexKolonitsky opened a pull request:
https://github.com/apache/cayenne/pull/10
CAY-1946 cdbimport improvments
Basic cdb import improvement: use db merge if model already exist
1) added DbLoaderConfiguration class; this class responsibility should be
provide to DataLoader all necessary information
2) DbImportAction - this class will check availability of dataMap file and
do merge if it is exist otherwise just load model from db
3) DbImportParameters - was renamed to DbImportConfiguration and also
responsible fo construction of necessary objects for during import process
4) functional or end-to-end test for maven plugin basic usage scenarios
5) XmlUnit - for xml file comparison
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/AlexKolonitsky/cayenne
CAY-1946_cdbimport_improvments
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/cayenne/pull/10.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #10
----
commit f40bdf45413941ec57e02052675d681fc3ff5e4d
Author: alexkolonitsky <[email protected]>
Date: 2014-08-29T10:43:55Z
CAY-1946 CDbimport improvements
Basic cdb import improvement: use db merge if model already exist
1) added DbLoaderConfiguration class; this class responsibility should be
provide to DataLoader all necessary information
2) DbImportAction - this class will check availability of dataMap file and
do merge if it is exist otherwise just load model from db
3) DbImportParameters - was renamed to DbImportConfiguration and also
responsible fo construction of necessary objects for during import process
4) functional or end-to-end test for maven plugin basic usage scenarios
5) XmlUnit - for xml file comparison
commit 3519c22c602feaf0962a5ce6f14c1cd45cd4278d
Author: alexkolonitsky <[email protected]>
Date: 2014-08-29T10:30:58Z
CAY-1946 CDbimport improvements
Basic cdb import improvement: use db merge if model already exist
1) added DbLoaderConfiguration class; this class responsibility should be
provide to DataLoader all necessary information
2) DbImportAction - this class will check availability of dataMap file and
do merge if it is exist otherwise just load model from db
3) DbImportParameters - was renamed to DbImportConfiguration and also
responsible fo construction of necessary objects for during import process
4) functional or end-to-end test for maven plugin basic usage scenarios
5) XmlUnit - for xml file comparison
(cherry picked from commit c2c7308)
----
> 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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