I have a custom field type, org_person, with an autocomplete set up on it to search our endpoint of "people". It saves something like John Smith (12345) to the value property ($properties['value']).

The endpoint looks something like this:

[{id, name, title, ...}, {id, name, title, ...},...]

My goal is to, on entity save (and cron), query my endpoint and save the 30+ properties to the database.

I need to be able to filter and sort on these values in views which is why computing this data in real-time is off the table.

As I understand it, I need to set the class of the property to use for generating the property value. Something like:

    $properties['name'] = DataDefinition::create('any')       ->setLabel(new TranslatableMarkup('Name'))       ->setComputed(TRUE)       ->setReadOnly(TRUE)       ->setClass('Drupalmy_moduleTypedDataName'); 

Then in my TypedDataName Class, I get the value like:

  public function getValue() {     if ($this->processed !== NULL) {       return $this->processed;     }      $values = $this->getParent()->getValue();     $submitted_value  = $values['value'];      $id = EntityAutocomplete::extractEntityIdFromAutocompleteInput($submitted_value);      // Runs fetch here to get 'name' property     $response = $this->_fetchName($id);     $value = $response[0]["name"];      $this->processed = $value;      return $this->processed;   } 

This works, although it seems like it’s running on display instead of pulling from the database.

Also, if I added another property, like title (or the rest of them), it’s going to run this fetch on every property.

How can this be done with a single fetch to populate the 30+ properties on save?