Commit fed0b7d7 authored by alexpott's avatar alexpott

Issue #2845488 by Jo Fitzgerald, gerzenstl, Pavan B S, Yogesh Pawar,...

Issue #2845488 by Jo Fitzgerald, gerzenstl, Pavan B S, Yogesh Pawar, gaurav.kapoor, quietone, phenaproxima, mikeryan: Add documentation to SkipOnEmpty process plugin
parent 2cfd4d71
......@@ -9,9 +9,47 @@
use Drupal\migrate\MigrateSkipRowException;
/**
* If the source evaluates to empty, we skip processing or the whole row.
* Skips processing the current row when the input value is empty.
*
* @link https://www.drupal.org/node/2228793 Online handbook documentation for skip_on_empty process plugin @endlink
* The skip_on_empty process plugin checks to see if the current input value
* is empty (empty string, NULL, FALSE, 0, '0', or an empty array). If so, the
* further processing of the property or the entire row (depending on the chosen
* method) is skipped and will not be migrated.
*
* Available configuration keys:
* - method: (optional) What to do if the input value is empty. Possible values:
* - row: Skips the entire row when an empty value is encountered.
* - process: Prevents further processing of the input property when the value
* is empty.
*
* Examples:
*
* @code
* process:
* field_type_exists:
* plugin: skip_on_empty
* method: row
* source: field_name
* @endcode
*
* If field_name is empty, skips the entire row.
*
* @code
* process:
* parent:
* -
* plugin: skip_on_empty
* method: process
* source: parent
* -
* plugin: migration
* migration: d6_taxonomy_term
* @endcode
*
* If parent is empty, any further processing of the property is skipped - thus,
* the next plugin (migration) will not be run.
*
* @see \Drupal\migrate\Plugin\MigrateProcessInterface
*
* @MigrateProcessPlugin(
* id = "skip_on_empty"
......@@ -20,7 +58,24 @@
class SkipOnEmpty extends ProcessPluginBase {
/**
* {@inheritdoc}
* Skips the current row when value is not set.
*
* @param mixed $value
* The input value.
* @param \Drupal\migrate\MigrateExecutableInterface $migrate_executable
* The migration in which this process is being executed.
* @param \Drupal\migrate\Row $row
* The row from the source to process.
* @param string $destination_property
* The destination property currently worked on. This is only used together
* with the $row above.
*
* @return mixed
* The input value, $value, if it is not empty.
*
* @throws \Drupal\migrate\MigrateSkipRowException
* Thrown if the source property is not set and the row should be skipped,
* records with STATUS_IGNORED status in the map.
*/
public function row($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
if (!$value) {
......@@ -30,7 +85,24 @@ public function row($value, MigrateExecutableInterface $migrate_executable, Row
}
/**
* {@inheritdoc}
* Stops processing the current property when value is not set.
*
* @param mixed $value
* The input value.
* @param \Drupal\migrate\MigrateExecutableInterface $migrate_executable
* The migration in which this process is being executed.
* @param \Drupal\migrate\Row $row
* The row from the source to process.
* @param string $destination_property
* The destination property currently worked on. This is only used together
* with the $row above.
*
* @return mixed
* The input value, $value, if it is not empty.
*
* @throws \Drupal\migrate\MigrateSkipProcessException
* Thrown if the source property is not set and rest of the process should
* be skipped.
*/
public function process($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
if (!$value) {
......
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