I had a problem with hbm2java (in 2.1.2 tools) whereby for properties with hibernate PrimitiveTypes (in my case "yes_no" - but also int etc.) hbm2java always generated a primitive java type - e.g. boolean - even if the property was nullable.

I solved this by changing line 225 of
net/sf/hibernate/tool/hbm2java/ClassMapping.java

from



to



and re-compiling the hibernate-tools.jar.

Works ok for me now, I get java.lang.Boolean java properties created when nullable.

Luke

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