abstract class MakeUniqueBase in Drupal 10
Same name and namespace in other branches
- 8 core/modules/migrate/src/Plugin/migrate/process/MakeUniqueBase.php \Drupal\migrate\Plugin\migrate\process\MakeUniqueBase
- 9 core/modules/migrate/src/Plugin/migrate/process/MakeUniqueBase.php \Drupal\migrate\Plugin\migrate\process\MakeUniqueBase
This plugin ensures the source value is unique.
The MakeUniqueBase process plugin is used to avoid duplication at the destination. For example, when creating filter format names, the source value is checked against the existing filter format names and if it exists, a numeric postfix is added and incremented until a unique value is created. An optional postfix string can be insert before the numeric postfix.
Available configuration keys
- start: (optional) The position at which to start reading.
- length: (optional) The number of characters to read.
- postfix: (optional) A string to insert before the numeric postfix.
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\migrate\Plugin\migrate\process\MakeUniqueBase
- class \Drupal\migrate\ProcessPluginBase implements MigrateProcessInterface
- class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, MessengerTrait, StringTranslationTrait
Expanded class hierarchy of MakeUniqueBase
See also
\Drupal\migrate\Plugin\MigrateProcessInterface
File
- core/
modules/ migrate/ src/ Plugin/ migrate/ process/ MakeUniqueBase.php, line 26
Namespace
Drupal\migrate\Plugin\migrate\processView source
abstract class MakeUniqueBase extends ProcessPluginBase {
/**
* Creates a unique value based on the source value.
*
* @param string $value
* The input string.
* @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 $row above.
*
* @return string
* The unique version of the input value.
*
* @throws \Drupal\migrate\MigrateException
*/
public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
$i = 1;
$postfix = $this->configuration['postfix'] ?? '';
$start = $this->configuration['start'] ?? 0;
if (!is_int($start)) {
throw new MigrateException('The start position configuration key should be an integer. Omit this key to capture from the beginning of the string.');
}
$length = $this->configuration['length'] ?? NULL;
if (!is_null($length) && !is_int($length)) {
throw new MigrateException('The character length configuration key should be an integer. Omit this key to capture the entire string.');
}
// Use optional start or length to return a portion of the unique value.
$value = mb_substr($value, $start, $length);
$new_value = $value;
while ($this
->exists($new_value)) {
$new_value = $value . $postfix . $i++;
}
return $new_value;
}
/**
* This is a query checking the existence of some value.
*
* @param mixed $value
* The value to check.
*
* @return bool
* TRUE if the value exists.
*/
protected abstract function exists($value);
}
Members
Name | Modifiers | Type | Description | Overrides |
---|---|---|---|---|
DependencySerializationTrait:: |
protected | property | ||
DependencySerializationTrait:: |
protected | property | ||
DependencySerializationTrait:: |
public | function | 2 | |
DependencySerializationTrait:: |
public | function | 2 | |
MakeUniqueBase:: |
abstract protected | function | This is a query checking the existence of some value. | 1 |
MakeUniqueBase:: |
public | function |
Creates a unique value based on the source value. Overrides ProcessPluginBase:: |
|
MessengerTrait:: |
protected | property | The messenger. | 18 |
MessengerTrait:: |
public | function | Gets the messenger. | 18 |
MessengerTrait:: |
public | function | Sets the messenger. | |
PluginBase:: |
protected | property | Configuration information passed into the plugin. | 1 |
PluginBase:: |
protected | property | The plugin implementation definition. | |
PluginBase:: |
protected | property | The plugin_id. | |
PluginBase:: |
constant | A string which is used to separate base plugin IDs from the derivative ID. | ||
PluginBase:: |
public | function | ||
PluginBase:: |
public | function | ||
PluginBase:: |
public | function | 2 | |
PluginBase:: |
public | function | ||
PluginBase:: |
public | function | Determines if the plugin is configurable. | |
PluginBase:: |
public | function | Constructs a \Drupal\Component\Plugin\PluginBase object. | 53 |
ProcessPluginBase:: |
public | function |
Indicates whether the returned value requires multiple handling. Overrides MigrateProcessInterface:: |
3 |
StringTranslationTrait:: |
protected | property | The string translation service. | 3 |
StringTranslationTrait:: |
protected | function | Formats a string containing a count of items. | |
StringTranslationTrait:: |
protected | function | Returns the number of plurals supported by a given language. | |
StringTranslationTrait:: |
protected | function | Gets the string translation service. | |
StringTranslationTrait:: |
public | function | Sets the string translation service to use. | 1 |
StringTranslationTrait:: |
protected | function | Translates a string to the current language or to a given language. |