Re: one attribute/many fields

[Thomas Mahler]

Hi Dariusz,


Dariusz Kies wrote:

Could I map one attribute in my class to many fields in a table? For example I

Yes, that's possible. You must use the PersistentFieldNestedField implementation (to be configured in OJB.properties).

The FieldDescriptors for Price (inside the Article ClassDescriptor!) could look like follows:

have a class:

class Price
{
double value; String currency;
}

and my persistent class:

class Article
{
long id;
String name;
Price price;
}

and my repository.xml:

<class-descriptor
class="Article"
table="T_Article"
>
<field-descriptor id="1"
name="id"
column="id"
jdbc-type="INTEGER"
primarykey="true"
autoincrement="true"
/>
<field-descriptor id="2"
name="name"
column="name"
jdbc-type="VARCHAR"
/>

       <field-descriptor id="3"
          name="price->value"
          column="price_value"
          jdbc-type="DOUBLE"
       />
       <field-descriptor id="4"
          name="price->currency"
          column="price_currency"
          jdbc-type="VARCHAR"
       />

<!-- How can I declare my price attribute ??? -->

</class-descriptor>

I don't want to do a table with prices and I don't want to split my Price class
into two attributes in the Article class.
thanks in advance
Dariusz Kies

cheers,
Thomas

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