Added sluggable strategy CheckOnlyStrategy

src/Strategy/CheckOnlyStrategy.php

@@ -0,0 +1,57 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SixtyEightPublishers\DoctrineSluggable\Strategy;
+
+use SixtyEightPublishers;
+
+/**
+ * Check only, slug field must be set manually.
+ *
+ * $options = array()
+ */
+final class CheckOnlyStrategy extends SixtyEightPublishers\DoctrineSluggable\AbstractAdjustableObject implements ISluggableStrategy
+{
+	/**
+	 * {@inheritdoc}
+	 */
+	public function doInsert(SixtyEightPublishers\DoctrineSluggable\Definition\SluggableDefinition $definition, SixtyEightPublishers\DoctrineSluggable\EntityAdapter\IEntityAdapter $adapter): void
+	{
+		$this->checkUnique($definition, $adapter);
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function doUpdate(SixtyEightPublishers\DoctrineSluggable\Definition\SluggableDefinition $definition, SixtyEightPublishers\DoctrineSluggable\EntityAdapter\IEntityAdapter $adapter): void
+	{
+		$fieldName = $definition->getFieldName();
+		$changes = $adapter->getEntityManager()->getUnitOfWork()->getEntityChangeSet($adapter->getEntity());
+
+		if (!isset($changes[$fieldName]) || $changes[$fieldName][0] === $changes[$fieldName][1]) {
+			return;
+		}
+
+		$this->checkUnique($definition, $adapter);
+	}
+
+	/**
+	 * @param \SixtyEightPublishers\DoctrineSluggable\Definition\SluggableDefinition $definition
+	 * @param \SixtyEightPublishers\DoctrineSluggable\EntityAdapter\IEntityAdapter   $adapter
+	 *
+	 * @return void
+	 */
+	private function checkUnique(SixtyEightPublishers\DoctrineSluggable\Definition\SluggableDefinition $definition, SixtyEightPublishers\DoctrineSluggable\EntityAdapter\IEntityAdapter $adapter): void
+	{
+		$fieldName = $definition->getFieldName();
+		$slug = $adapter->getValue($fieldName);
+
+		if (!$definition->getUniquer()->isUnique($slug, $adapter, $definition->getFinder())) {
+			throw new SixtyEightPublishers\DoctrineSluggable\Exception\UniqueSlugException($slug, $adapter->getEntity(), $fieldName);
+		}
+
+		# add slug between persisted
+		$definition->getFinder()->addPersistedSlug($adapter, $fieldName, $slug);
+	}
+}