class BeerNode in Migrate Plus 8

Source plugin for beer content.

Plugin annotation

@MigrateSource(
  id = "beer_node"
)

Hierarchy

• class \Drupal\Component\Plugin\PluginBase implements DerivativeInspectionInterface, PluginInspectionInterface
  • class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, MessengerTrait, StringTranslationTrait
    • class \Drupal\migrate\Plugin\migrate\source\SourcePluginBase implements RollbackAwareInterface, MigrateSourceInterface
      • class \Drupal\migrate\Plugin\migrate\source\SqlBase implements ContainerFactoryPluginInterface, RequirementsInterface
        • class \Drupal\migrate_example\Plugin\migrate\source\BeerNode

File

migrate_example/src/Plugin/migrate/source/BeerNode.php, line 20

Contains \Drupal\migrate_example\Plugin\migrate\source\BeerNode.

Namespace

Drupal\migrate_example\Plugin\migrate\source

class BeerNode extends SqlBase {

  /**
   * {@inheritdoc}
   */
  public function query() {

    /**
     * An important point to note is that your query *must* return a single row
     * for each item to be imported. Here we might be tempted to add a join to
     * migrate_example_beer_topic_node in our query, to pull in the
     * relationships to our categories. Doing this would cause the query to
     * return multiple rows for a given node, once per related value, thus
     * processing the same node multiple times, each time with only one of the
     * multiple values that should be imported. To avoid that, we simply query
     * the base node data here, and pull in the relationships in prepareRow()
     * below.
     */
    $query = $this
      ->select('migrate_example_beer_node', 'b')
      ->fields('b', [
      'bid',
      'name',
      'body',
      'excerpt',
      'aid',
      'countries',
      'image',
      'image_alt',
      'image_title',
      'image_description',
    ]);
    return $query;
  }

  /**
   * {@inheritdoc}
   */
  public function fields() {
    $fields = [
      'bid' => $this
        ->t('Beer ID'),
      'name' => $this
        ->t('Name of beer'),
      'body' => $this
        ->t('Full description of the beer'),
      'excerpt' => $this
        ->t('Abstract for this beer'),
      'aid' => $this
        ->t('Account ID of the author'),
      'countries' => $this
        ->t('Countries of origin. Multiple values, delimited by pipe'),
      'image' => $this
        ->t('Image path'),
      'image_alt' => $this
        ->t('Image ALT'),
      'image_title' => $this
        ->t('Image title'),
      'image_description' => $this
        ->t('Image description'),
      // Note that this field is not part of the query above - it is populated
      // by prepareRow() below. You should document all source properties that
      // are available for mapping after prepareRow() is called.
      'terms' => $this
        ->t('Applicable styles'),
    ];
    return $fields;
  }

  /**
   * {@inheritdoc}
   */
  public function getIds() {
    return [
      'bid' => [
        'type' => 'integer',
        'alias' => 'b',
      ],
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function prepareRow(Row $row) {

    /**
     * As explained above, we need to pull the style relationships into our
     * source row here, as an array of 'style' values (the unique ID for
     * the beer_term migration).
     */
    $terms = $this
      ->select('migrate_example_beer_topic_node', 'bt')
      ->fields('bt', [
      'style',
    ])
      ->condition('bid', $row
      ->getSourceProperty('bid'))
      ->execute()
      ->fetchCol();
    $row
      ->setSourceProperty('terms', $terms);

    // As we did for favorite beers in the user migration, we need to explode
    // the multi-value country names.
    if ($value = $row
      ->getSourceProperty('countries')) {
      $row
        ->setSourceProperty('countries', explode('|', $value));
    }
    return parent::prepareRow($row);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
BeerNode::fields	public	function	Returns available fields on the source. Overrides MigrateSourceInterface::fields
BeerNode::getIds	public	function	Defines the source fields uniquely identifying a source row. Overrides MigrateSourceInterface::getIds
BeerNode::prepareRow	public	function	Adds additional data to the row. Overrides SourcePluginBase::prepareRow
BeerNode::query	public	function	Overrides SqlBase::query
DependencySerializationTrait::$_entityStorages	protected	property	An array of entity type IDs keyed by the property name of their storages.
DependencySerializationTrait::$_serviceIds	protected	property	An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep	public	function		1
DependencySerializationTrait::__wakeup	public	function		2
MessengerTrait::$messenger	protected	property	The messenger.	29
MessengerTrait::messenger	public	function	Gets the messenger.	29
MessengerTrait::setMessenger	public	function	Sets the messenger.
PluginBase::$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	3
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.
SourcePluginBase::$cache	protected	property	The backend cache.
SourcePluginBase::$cacheCounts	protected	property	Whether this instance should cache the source count.	1
SourcePluginBase::$cacheKey	protected	property	Key to use for caching counts.
SourcePluginBase::$currentRow	protected	property	The current row from the query.
SourcePluginBase::$currentSourceIds	protected	property	The primary key of the current row.
SourcePluginBase::$highWaterProperty	protected	property	Information on the property used as the high-water mark.
SourcePluginBase::$highWaterStorage	protected	property	The key-value storage for the high-water value.
SourcePluginBase::$idMap	protected	property	The migration ID map.
SourcePluginBase::$iterator	protected	property	The iterator to iterate over the source rows.
SourcePluginBase::$mapRowAdded	protected	property	Flags whether source plugin will read the map row and add to data row.
SourcePluginBase::$migration	protected	property	The entity migration object.
SourcePluginBase::$moduleHandler	protected	property	The module handler service.	2
SourcePluginBase::$originalHighWater	protected	property	The high water mark at the beginning of the import operation.
SourcePluginBase::$skipCount	protected	property	Whether this instance should not attempt to count the source.	1
SourcePluginBase::$trackChanges	protected	property	Flags whether to track changes to incoming data.	1
SourcePluginBase::aboveHighwater	protected	function	Check if the incoming data is newer than what we've previously imported.
SourcePluginBase::current	public	function
SourcePluginBase::doCount	protected	function	Gets the source count checking if the source is countable or using the iterator_count function.	1
SourcePluginBase::getCache	protected	function	Gets the cache object.
SourcePluginBase::getCurrentIds	public	function	Gets the currentSourceIds data member.
SourcePluginBase::getHighWater	protected	function	The current value of the high water mark.
SourcePluginBase::getHighWaterField	protected	function	Get the name of the field used as the high watermark.
SourcePluginBase::getHighWaterProperty	protected	function	Get information on the property used as the high watermark.
SourcePluginBase::getHighWaterStorage	protected	function	Get the high water storage object.	1
SourcePluginBase::getIterator	protected	function	Returns the iterator that will yield the row arrays to be processed.
SourcePluginBase::getModuleHandler	protected	function	Gets the module handler.
SourcePluginBase::getSourceModule	public	function	Gets the source module providing the source data. Overrides MigrateSourceInterface::getSourceModule
SourcePluginBase::key	public	function	Gets the iterator key.
SourcePluginBase::next	public	function	The migration iterates over rows returned by the source plugin. This method determines the next row which will be processed and imported into the system.
SourcePluginBase::postRollback	public	function	Performs post-rollback tasks. Overrides RollbackAwareInterface::postRollback
SourcePluginBase::preRollback	public	function	Performs pre-rollback tasks. Overrides RollbackAwareInterface::preRollback
SourcePluginBase::rewind	public	function	Rewinds the iterator.
SourcePluginBase::rowChanged	protected	function	Checks if the incoming row has changed since our last import.
SourcePluginBase::saveHighWater	protected	function	Save the new high water mark.
SourcePluginBase::valid	public	function	Checks whether the iterator is currently valid.
SqlBase::$batch	protected	property	The count of the number of batches run.
SqlBase::$batchSize	protected	property	Number of records to fetch from the database during each batch.
SqlBase::$database	protected	property	The database object.	1
SqlBase::$query	protected	property	The query string.
SqlBase::$state	protected	property	State service for retrieving database info.
SqlBase::checkRequirements	public	function	Checks if requirements for this plugin are OK. Overrides RequirementsInterface::checkRequirements	1
SqlBase::count	public	function	Gets the source count. Overrides SourcePluginBase::count	6
SqlBase::create	public static	function	Creates an instance of the plugin. Overrides ContainerFactoryPluginInterface::create	1
SqlBase::fetchNextBatch	protected	function	Prepares query for the next set of data from the source database.
SqlBase::fetchNextRow	protected	function	Position the iterator to the following row. Overrides SourcePluginBase::fetchNextRow
SqlBase::getDatabase	public	function	Gets the database connection object.	2
SqlBase::initializeIterator	protected	function	Initializes the iterator with the source data. Overrides SourcePluginBase::initializeIterator	20
SqlBase::mapJoinable	protected	function	Checks if we can join against the map table.	1
SqlBase::prepareQuery	protected	function	Adds tags and metadata to the query.
SqlBase::select	protected	function	Wrapper for database select.
SqlBase::setUpDatabase	protected	function	Gets a connection to the referenced database.
SqlBase::__construct	public	function	Constructs a \Drupal\Component\Plugin\PluginBase object. Overrides SourcePluginBase::__construct	3
SqlBase::__toString	public	function	Prints the query string when the object is used as a string. Overrides MigrateSourceInterface::__toString
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.	1
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.