TCA Override 

Basic 

class DataflowUtility

Fully qualified name

\Jar\Dataflow\Utilities\DataflowUtility

addDataflowFieldsToContentElement ( $cType, $foreignTable, $configuration)

param string $cType

CType of the content element.

param string $foreignTable

Table name of the foreign table.

param bool $enablePagination

Activates pagination options in Backend and outputs paginated elements.

param array $configuration

Advanced configuration.

param array $configuration['foreignSortableColumns']

Whitelist of columns which are selectable for sorting.

param array $configuration['foreignConstraints']

For developers

\Jar\Dataflow\Utilities\DataflowUtility::addDataflowFieldsToContentElement('html', 'tx_j77template_utility_jobs', [
    'enablePagination' => true,
    // you could write contraints directly as string, be careful when using dynamic values! No Escaping will be used here!
    'foreignConstraints' => [
         '`tx_j77template_utility_jobs`.`jobtype` = 12345'        
    ]
]);

For developers 

\Jar\Dataflow\Utilities\DataflowUtility::addDataflowFieldsToContentElement('html', 'tx_j77template_utility_jobs', [
    'foreignConstraints' => [
        [
            'userFunc' => \EXT\CustomNamespace\Constraints\CustomConstraints::class . '->getListConstraints',
            'parameters' => [
                'hello' => 'world'
            ]
        ]
    ]
]);

| | The userFunc can be used to add custom contraints for the crawled items. | E.g. all items with the uid greater 1330 and less than 1432. |

/**
* @param ExpressionBuilder $expressionBuilder
* @param array $params 
* @return array 
*/
public function getListConstraints(ExpressionBuilder $expressionBuilder, array $params = []): array {
    $table = $params['table'];
    $result = [
        $expressionBuilder->gte($table . '.uid', 1331),
        $expressionBuilder->lte($table . '.uid', 1431)
    ];
    return $result;
}