ItemProviderStrategy is a simpler abstraction that has come to replace the Transformer functionality. While Transformer is responsible for both the read and write operations, ItemProviderStrategy only needs to know how to access the data with persistence typically handled elsewhere. This supposedly will simplify the port.

Results

Some existing Transformer implementations will be completely ditched, while those that are still valid will be ported to ItemProviderStrategy.

For the preliminary investigation, see DEV-1302. For the actual implementation, see MGNLUI-5340 and MGNLPN-444.

Note

The following 4 field Transformer classes are not listed at https://documentation.magnolia-cms.com/display/DOCS61/_Transformer+classes:

• info.magnolia.ui.form.field.transformer.basic.BCryptTransformer
• info.magnolia.ui.form.field.transformer.basic.ListToSetTransformer
• info.magnolia.ui.form.field.transformer.basic.NotNullInitialStringValueTransformer
• info.magnolia.ui.form.field.transformer.item.FileTransformer

Rico: I think those can be ditched, but let's wait for the implementation.