Introcuce ImportMetaFilter #56

inc/Import/Filter/ImportMetaFilter.php

@@ -0,0 +1,69 @@
+<?php # -*- coding: utf-8 -*-
+
+namespace W2M\Import\Filter;
+
+use
+	W2M\Import\Data,
+	W2M\Import\Filter,
+	W2M\Import\Type;
+
+/**
+ * Class ImportMetaFilter
+ *
+ * @package W2M\Import\Filter
+ */
+class ImportMetaFilter implements ImportMetaFilterInterface {
+
+	/**
+	 * @var Data\MetaFilterListInterface
+	 */
+	private $filter_list;
+
+	/**
+	 * @var string
+	 */
+	private $type;
+
+	/**
+	 * @param Data\MetaFilterListInterface $filter_list
+	 * @param string $type
+	 */
+	public function __construct(
+		Data\MetaFilterListInterface $filter_list,
+		$type
+	) {
+
+		$this->filter_list = $filter_list;
+		$this->type        = (string) $type;
+	}
+
+	/**
+	 * @param Type\ImportMetaInterface $meta
+	 * @param int $object_id
+	 *
+	 * @return mixed
+	 */
+	public function filter_value( Type\ImportMetaInterface $meta, $object_id ) {
+
+		$filters = $this->filter_list->get_filters( $this->type, $meta->key() );
+		$value   = $meta->value();
+		foreach ( $filters as $filter ) {
+			if ( ! $filter->is_filterable( $meta->value(), $object_id ) ) {
+				/**
+				 * Fires when a filter is invalid (due to missing data)
+				 *
+				 * @param string $type ('post', 'comment', 'user' or 'term')
+				 * @param int $object_id
+				 * @param Type\ImportMetaInterface $meta
+				 * @param Filter\ValueFilterableInterface $filter
+				 */
+				do_action( 'w2m_import_meta_not_filterable', $this->type, $object_id, $meta, $filter );
+				continue;
+			}
+			$value = $filter->filter( $value, $object_id );
+		}
+
+		return $value;
+	}
+
+}

inc/Import/Filter/ImportMetaFilterInterface.php

@@ -0,0 +1,24 @@
+<?php # -*- coding: utf-8 -*-
+
+namespace W2M\Import\Filter;
+
+use
+	W2M\Import\Type;
+
+/**
+ * Interface ImportMetaFilterInterface
+ *
+ * Filters the value of ImportMetaInterface instance
+ *
+ * @package W2M\Import\Filter
+ */
+interface ImportMetaFilterInterface {
+
+	/**
+	 * @param Type\ImportMetaInterface $meta
+	 * @param int $object_id
+	 *
+	 * @return mixed (The filtered value)
+	 */
+	public function filter_value( Type\ImportMetaInterface $meta, $object_id );
+}

readme.md

@@ -98,6 +98,8 @@ Use the installer via back-end of your install or ...
 * `w2m_import_post_ancestor_resolving_start` in `W2M\Import\Module\ResolvingPendingRelations::resolving_posts()`
 * `w2m_import_term_ancestor_resolving_start` in `W2M\Import\Module\ResolvingPendingRelations::resolving_terms()`
 
+* `w2m_import_meta_not_filterable` in `W2M\Import\Filter\ImportMetaFilter::filter_value()`
+
 
 ## Other Notes
 

tests/phpunit/Unit/Import/Filter/ImportMetaFilterTest.php

@@ -0,0 +1,16 @@
+<?php # -*- coding: utf-8 -*-
+
+namespace W2M\Test\Unit\Import\Filter;
+
+use
+	W2M\Import\Filter,
+	W2M\Test\Helper;
+
+class ImportMetaFilterTest extends Helper\MonkeyTestCase {
+
+	public function test_filter_value() {
+
+		// Todo: Write tests for
+		$this->markTestIncomplete( 'Under construction' );
+	}
+}