+<?php
+
+namespace Drupal\field\Plugin\migrate\source\d7;
+
+use Drupal\migrate\Row;
+use Drupal\migrate_drupal\Plugin\migrate\source\DrupalSqlBase;
+
+/**
+ * Drupal 7 field instances source from database.
+ *
+ * @MigrateSource(
+ * id = "d7_field_instance",
+ * source_provider = "field"
+ * )
+ */
+class FieldInstance extends DrupalSqlBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function query() {
+ $query = $this->select('field_config_instance', 'fci')
+ ->fields('fci')
+ ->condition('fci.deleted', 0)
+ ->condition('fc.active', 1)
+ ->condition('fc.deleted', 0)
+ ->condition('fc.storage_active', 1)
+ ->fields('fc', ['type']);
+
+ $query->innerJoin('field_config', 'fc', 'fci.field_id = fc.id');
+ $query->addField('fc', 'data', 'field_data');
+
+ // Optionally filter by entity type and bundle.
+ if (isset($this->configuration['entity_type'])) {
+ $query->condition('fci.entity_type', $this->configuration['entity_type']);
+
+ if (isset($this->configuration['bundle'])) {
+ $query->condition('fci.bundle', $this->configuration['bundle']);
+ }
+ }
+
+ return $query;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function fields() {
+ return [
+ 'field_name' => $this->t('The machine name of field.'),
+ 'entity_type' => $this->t('The entity type.'),
+ 'bundle' => $this->t('The entity bundle.'),
+ 'default_value' => $this->t('Default value'),
+ 'instance_settings' => $this->t('Field instance settings.'),
+ 'widget_settings' => $this->t('Widget settings.'),
+ 'display_settings' => $this->t('Display settings.'),
+ 'field_settings' => $this->t('Field settings.'),
+ ];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function prepareRow(Row $row) {
+ $data = unserialize($row->getSourceProperty('data'));
+
+ $row->setSourceProperty('label', $data['label']);
+ $row->setSourceProperty('description', $data['description']);
+ $row->setSourceProperty('required', $data['required']);
+
+ $default_value = !empty($data['default_value']) ? $data['default_value'] : [];
+ if ($data['widget']['type'] == 'email_textfield' && $default_value) {
+ $default_value[0]['value'] = $default_value[0]['email'];
+ unset($default_value[0]['email']);
+ }
+ $row->setSourceProperty('default_value', $default_value);
+
+ // Settings.
+ $row->setSourceProperty('instance_settings', $data['settings']);
+ $row->setSourceProperty('widget_settings', $data['widget']);
+ $row->setSourceProperty('display_settings', $data['display']);
+
+ // This is for parity with the d6_field_instance plugin.
+ $row->setSourceProperty('widget_type', $data['widget']['type']);
+
+ $field_data = unserialize($row->getSourceProperty('field_data'));
+ $row->setSourceProperty('field_settings', $field_data['settings']);
+
+ $translatable = FALSE;
+ if ($row->getSourceProperty('entity_type') == 'node') {
+ // language_content_type_[bundle] may be
+ // - 0: no language support
+ // - 1: language assignment support
+ // - 2: node translation support
+ // - 4: entity translation support
+ if ($this->variableGet('language_content_type_' . $row->getSourceProperty('bundle'), 0) == 2) {
+ $translatable = TRUE;
+ }
+ }
+ else {
+ // This is not a node entity. Get the translatable value from the source
+ // field_config table.
+ $data = unserialize($row->getSourceProperty('field_data'));
+ $translatable = $data['translatable'];
+ }
+ $row->setSourceProperty('translatable', $translatable);
+
+ return parent::prepareRow($row);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getIds() {
+ return [
+ 'entity_type' => [
+ 'type' => 'string',
+ 'alias' => 'fci',
+ ],
+ 'bundle' => [
+ 'type' => 'string',
+ 'alias' => 'fci',
+ ],
+ 'field_name' => [
+ 'type' => 'string',
+ 'alias' => 'fci',
+ ],
+ ];
+ }
+
+}