Apple WebObjects 3.5 Manual de usuario descargar pdf (Pagina 100)

Chapter 3 Creating a WebObjects Database Application

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your relationship, and the relationship’s name is dependent on the adaptor

the wizard used. Adaptors don’t all have the same naming convention for

to-many relationships. For example, the Oracle adaptor names Movie’s

relationship

movieRoleArray instead of movieRoles.

If your Movie entity doesn’t have a

movieRoles relationship, it means that the

database server’s schema information for your database didn’t have enough

information for the wizard to create them. You need to create them by hand

now. The next several steps explain how.

2. Choose Property

m Add Relationship.

A new relationship named “Relationship” is added in the table view at the

bottom of the Model Editor. The new relationship is already selected.

3. With the relationship selected in the right frame of the Model Editor, click

the button (in the toolbar) to inspect the relationship.

4. In the Inspector, select the To Many option.

5. Select MovieRole as the destination entity.

6. Select

movieId in the Source Attributes list.

7. Select

movieId in the Destination Attributes list.

Don’t change the relationship’s name, because EOModeler

updates the name for you automatically when you connect

the Destination and Join properties.

First select whether the relationship is to-one or to-many.

Then select a destination entity.

Select a source attribute...

...and a matching destination attribute.

When you’re done, click here.

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Apple WebObjects 3.5 Manual de usuario Pagina 100