Was reading about this, and am just was wondering how the following situation might work:

You have hbm files that you'll generate java files from with hbm2java, then you'll override equals() and hashCode() (and make any other additions to the generated java files), then you'll continue your build process...

Is it possible to automate the above in Ant?

You could of course put the hbm2java in Ant, but in between every build would you have to manually go into the generated java files, modify them accordingly, then continue the build (e.g. compilation, packaging, etc...)?

Perhaps I've misunderstood the use or intention of hbm2java...any clarification would be appreciated.

Thanks.

<meta attribute="use-in-equals">true</meta>

for generating equals/hashcode.

and

<meta attribute="generated-class">BaseCustomer</meta> to auto create a BaseCustomer you then extends if you want to add additonal code.

(we also have an "extra-code" meta attribute but that is not recommende unless really needed)

When using use-in-equals and use-in-tostring, how come it doesn't use the Jakarta Commons classes:

import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.commons.lang.builder.ToStringBuilder;

I saw an example from Hibernate 2 where (for some reason without even having use-in-equals and use-in-tostring in the mapping file), the above imports were generated and those classes were used in the generation of equals(), hashCode(), and toString().

Was this changed to not use the Commons classes in Hibernate 3, or am I missing something here?

Thanks.

i updated the tools migration guide about this, but in short the answer is: The genereted code should not have a dependency on otherwise unnedded libraries.