class DataStreamFromAsset in farmOS 2.x

Gets the first data stream associated with an asset.

This is helpful in migrating data that was previously associated with a sensor asset ID.

Plugin annotation

@MigrateProcessPlugin(
  id = "data_stream_from_asset"
)

Hierarchy

• class \Drupal\Component\Plugin\PluginBase implements DerivativeInspectionInterface, PluginInspectionInterface
  • class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, MessengerTrait, StringTranslationTrait
    • class \Drupal\migrate\ProcessPluginBase implements MigrateProcessInterface
      • class \Drupal\data_stream\Plugin\migrate\process\DataStreamFromAsset

File

modules/core/data_stream/src/Plugin/migrate/process/DataStreamFromAsset.php, line 19

Namespace

Drupal\data_stream\Plugin\migrate\process

class DataStreamFromAsset extends ProcessPluginBase {

  /**
   * {@inheritdoc}
   */
  public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {

    // Get the asset_id.
    $asset_id = $row
      ->getDestinationProperty('asset_id');

    // Bail if no asset ids are provided.
    if (empty($asset_id)) {
      return NULL;
    }

    // Load asset.
    $asset = \Drupal::entityTypeManager()
      ->getStorage('asset')
      ->load($asset_id);

    // Return the first data stream ID if one exists.
    if (!empty($asset) && $asset
      ->hasField('data_stream')) {
      $ids = array_column($asset->data_stream
        ->getValue(), 'target_id');
      return reset($ids);
    }
    return NULL;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DataStreamFromAsset::transform	public	function	Performs the associated process. Overrides ProcessPluginBase::transform
DependencySerializationTrait::$_entityStorages	protected	property
DependencySerializationTrait::$_serviceIds	protected	property
DependencySerializationTrait::__sleep	public	function		2
DependencySerializationTrait::__wakeup	public	function		2
MessengerTrait::$messenger	protected	property	The messenger.	27
MessengerTrait::messenger	public	function	Gets the messenger.	27
MessengerTrait::setMessenger	public	function	Sets the messenger.
PluginBase::$configuration	protected	property	Configuration information passed into the plugin.	1
PluginBase::$pluginDefinition	protected	property	The plugin implementation definition.	1
PluginBase::$pluginId	protected	property	The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR		constant	A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId	public	function	Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId	public	function	Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginDefinition	public	function	Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition	2
PluginBase::getPluginId	public	function	Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable	public	function	Determines if the plugin is configurable.
PluginBase::__construct	public	function	Constructs a \Drupal\Component\Plugin\PluginBase object.	98
ProcessPluginBase::multiple	public	function	Indicates whether the returned value requires multiple handling. Overrides MigrateProcessInterface::multiple	3
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.	4
StringTranslationTrait::formatPlural	protected	function	Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals	protected	function	Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation	protected	function	Gets the string translation service.
StringTranslationTrait::setStringTranslation	public	function	Sets the string translation service to use.	2
StringTranslationTrait::t	protected	function	Translates a string to the current language or to a given language.