Updated Drupal to 8.6. This goes with the following updates because it's possible...

[yaffs-website] / web / core / modules / book / src / Plugin / migrate / source / Book.php

diff --git a/web/core/modules/book/src/Plugin/migrate/source/Book.php b/web/core/modules/book/src/Plugin/migrate/source/Book.php
new file mode 100644 (file)
index 0000000..08977fb
--- /dev/null
+++ b/web/core/modules/book/src/Plugin/migrate/source/Book.php
@@ -0,0 +1,63 @@
+<?php
+
+namespace Drupal\book\Plugin\migrate\source;
+
+use Drupal\migrate_drupal\Plugin\migrate\source\DrupalSqlBase;
+
+/**
+ * Drupal 6 and 7 book source.
+ *
+ * @MigrateSource(
+ *   id = "book",
+ *   source_module = "book",
+ * )
+ */
+class Book extends DrupalSqlBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function query() {
+    $query = $this->select('book', 'b')->fields('b', ['nid', 'bid']);
+    $query->join('menu_links', 'ml', 'b.mlid = ml.mlid');
+    $ml_fields = ['mlid', 'plid', 'weight', 'has_children', 'depth'];
+    foreach (range(1, 9) as $i) {
+      $field = "p$i";
+      $ml_fields[] = $field;
+      $query->orderBy('ml.' . $field);
+    }
+    return $query->fields('ml', $ml_fields);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getIds() {
+    $ids['mlid']['type'] = 'integer';
+    $ids['mlid']['alias'] = 'ml';
+    return $ids;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function fields() {
+    return [
+      'nid' => $this->t('Node ID'),
+      'bid' => $this->t('Book ID'),
+      'mlid' => $this->t('Menu link ID'),
+      'plid' => $this->t('Parent link ID'),
+      'weight' => $this->t('Weight'),
+      'p1' => $this->t('The first mlid in the materialized path. If N = depth, then pN must equal the mlid. If depth > 1 then p(N-1) must equal the parent link mlid. All pX where X > depth must equal zero. The columns p1 .. p9 are also called the parents.'),
+      'p2' => $this->t('The second mlid in the materialized path. See p1.'),
+      'p3' => $this->t('The third mlid in the materialized path. See p1.'),
+      'p4' => $this->t('The fourth mlid in the materialized path. See p1.'),
+      'p5' => $this->t('The fifth mlid in the materialized path. See p1.'),
+      'p6' => $this->t('The sixth mlid in the materialized path. See p1.'),
+      'p7' => $this->t('The seventh mlid in the materialized path. See p1.'),
+      'p8' => $this->t('The eighth mlid in the materialized path. See p1.'),
+      'p9' => $this->t('The ninth mlid in the materialized path. See p1.'),
+    ];
+  }
+
+}