Support custom DataFormats

[lordrip]

Please describe the feature that you want to propose

At the moment of writing, only DataFormats provided through the Camel Catalog are supported.

The goal for this ticket would be to add option to be able to select a custom DataFormat or to provide a reference to a DataFormat bean. Ideally, this should render a Bean configuration field that allows the user to pick an existing bean or to create one.

Related read: https://camel.apache.org/manual/dataformat-dsl.html

[igarashitm]

We already have custom dataformat in the form. The ref is supposed to be a BeanReferenceField, but it seems not ATM - it could be a bug.

[igarashitm]

Here is the model catalog entry - https://github.com/apache/camel/blob/main/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/models/custom.json

[lhein]

yep, we should make it cross connect to the beans tab / enhancing the text field as a typeahead dropdown with a button for create

[lhein]

we should try to filter for beans that match the required type for that field if defined but also we should try to offer an option ("Show More") to select from an unfiltered list.

[igarashitm]

The tricky part for filtering beans is that it requires Java class hierarchy knowledge, for example we don't know org.postgresql.ds.PGConnectionPoolDataSource implements javax.sql.DataSource

We need either

• Retrieve class hierarchy data from vscode (rather from vscode Java extension?)
• Have a dictionary for the well known implementation classes such as SQL DataSource, JMS ConnectionFactory, etc
  • This is at some level related to the bean template - Provide Beans templates #508
  • Unfortunately this won't work for user created classes such as custom DataFormat, custom AggregationStrategy, etc. It would need to register manually