TYPO3: Access old-style piBase methods from Extbase extension

Question

Can I access old-style piBase classes and methods from my Extbase extension?

For example, can I create an AccessMyoldExtensionService.php Service as a wrapper class and then pull the return values into my controller?

In my case, I need to return a list of old data records that can't be migrated to MVC style directly.

If so, what would the basic approach be?

Answer 1

To get access on the db records of your old extension you can map the table into your new extension. Create a new model with matching properties of the needed table fields. Create the mapping in TS setup.txt like

persistence{
[...]
    classes{
        Tx_YourNewExtension_Domain_Model_Bar {
            mapping {
                tableName = tableNameOfOldExtension
            }
        }

    }
}

Create the related repository.