Re: How do I dynamically create a new persistent object/table?

[Thomas Mahler]

Hi Jeffrey,

Here's at least a piece of a bone:
in src/test/org/apache/ojb/OJB.properties
set the switch autobuild=true.
OJB will then check if the table defined in the ClassDescriptor does 
already exist on each access to the table.

If it does not yet exist the table is generated by create table 
statement. This statement is constructed by the mapping info contained 
in the class-descriptor.

This is an undocumented feature! And it is undocumented because we have 
not decided yet if it is meant to stay. (It's a performance killer).

cheers,
Thomas
Jeffrey Gilbert wrote:
Anyone know of any additional instructions on how to dynamically create a 
persistent object/table?

The only thing I have to go on so far is what is in the FAQ:

    DescriptorRepository dr = MetadataManager.getInstance().getRepository();

    ClassDescriptor cld = new ClassDescriptor(dr);
    cld.setClassOfObject(A.class);
    //.... other setter
    // add the fields of the class
    FieldDescriptor fd = new FieldDescriptor(cld, 1);
    fd.setPersistentField(A.class, "someAField");
    cld.addFieldDescriptor(fd);
    // now we add the the class descriptor
    dr.setClassDescriptor(cld);
This code above when modified for my application doesn't result in a new 
table with my hypersonic datastore.  Could someone toss me a bone?  ;-)

Jeff

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