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I am trying to use reverse engineering to generate mapping and java code for "virtual" column, column which actually not in a schema.
But tool ignores mapping for this kind of columns.

huh?

Max.

We need to generate Hibernate mappings from 3rd party xml file and then generate database schema from those files.
Can we use reverse engineering for this ?

there are no direct support for reverse engineering "xml files" since its pretty impossible to deduce the "row" structure.

if you do know how to deduce it then look into implementing a custom MetaDataDialect and a custom ReverseEngineeringStrategy.

Max.

Thanks for reply. If I write custom MetaDataDialect class where in configuration it should be specified ?

at the moment you need to set the property hibernatetool.metadatadialect to the class name

Max.

I am sorry. But in what file property hibernatetool.metadatadialect should be specified ?

in any place where it will put into the Configuration properties.

That is:
System.properties
hibernate.cfg.xml
hibernate.properties
<property> tags in the HibernateTool's (i'm not totally sure that the last one here will work, but it should ;)

Dear Max.

We implemented our custom MetaDataDialect class where we read
meta data from external xml file and it works just fine.
Thank you very much for flexibility of your design which gives ability
to be independent from database schema metadata.
Just one issue left. We had to hardcode file name of our xml file.
Is it a way to get access to Configuration object from metadata dialect class.
This way we could put file name in configuration file.
Or may be you can advice on better way to do this ?

nice to see the flexibility being used ;)

currently i am not much for handing in a Configuration object to the MetaDataDialect since it is actually used to build another Configuration.

But we already pass some objects into the configure method and we could probably generalize that so you get a "ReverseEngineringConfiguration" kinda interface which would have getProperty() that we could delegate to the configuration from where the MetaDataDialect were created.

Put it in jira and i'll look at it.