Add plan record type bundle plugin support via the farm_entity module.

modules/core/entity/farm_entity.module

@@ -46,7 +46,7 @@ function farm_entity_entity_type_build(array &$entity_types) {
   }
 
   // Enable the use of bundle plugins on specific entity types.
-  foreach (['asset', 'log', 'plan', 'quantity'] as $entity_type) {
+  foreach (['asset', 'log', 'plan', 'plan_record', 'quantity'] as $entity_type) {
     if (!empty($entity_types[$entity_type])) {
       $entity_types[$entity_type]->set('bundle_plugin_type', $entity_type . '_type');
       $entity_types[$entity_type]->setHandlerClass('bundle_plugin', FarmEntityBundlePluginHandler::class);

modules/core/entity/farm_entity.services.yml

@@ -12,6 +12,9 @@ services:
   plugin.manager.plan_type:
     class: Drupal\farm_entity\PlanTypeManager
     parent: default_plugin_manager
+  plugin.manager.plan_record_type:
+    class: Drupal\farm_entity\PlanRecordTypeManager
+    parent: default_plugin_manager
   plugin.manager.quantity_type:
     class: Drupal\farm_entity\QuantityTypeManager
     parent: default_plugin_manager

modules/core/entity/src/Annotation/PlanRecordType.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Drupal\farm_entity\Annotation;
+
+use Drupal\Component\Annotation\Plugin;
+
+/**
+ * Defines the plan record relationship type plugin annotation object.
+ *
+ * Plugin namespace: Plugin\PlanRecord\PlanRecordType.
+ *
+ * @see plugin_api
+ *
+ * @Annotation
+ */
+class PlanRecordType extends Plugin {
+
+  /**
+   * The plugin ID.
+   *
+   * @var string
+   */
+  public $id;
+
+  /**
+   * The plan record relationship type label.
+   *
+   * @var \Drupal\Core\Annotation\Translation
+   *
+   * @ingroup plugin_translatable
+   */
+  public $label;
+
+}

modules/core/entity/src/PlanRecordTypeManager.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace Drupal\farm_entity;
+
+use Drupal\Component\Plugin\Exception\PluginException;
+use Drupal\Core\Cache\CacheBackendInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Plugin\DefaultPluginManager;
+
+/**
+ * Manages discovery and instantiation of plan record relationship type plugins.
+ *
+ * @see \Drupal\farm_entity\Annotation\PlanType
+ * @see plugin_api
+ */
+class PlanRecordTypeManager extends DefaultPluginManager {
+
+  /**
+   * Constructs a new PlanRecordTypeManager object.
+   *
+   * @param \Traversable $namespaces
+   *   An object that implements \Traversable which contains the root paths
+   *   keyed by the corresponding namespace to look for plugin implementations.
+   * @param \Drupal\Core\Cache\CacheBackendInterface $cache_backend
+   *   The cache backend.
+   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+   *   The module handler.
+   */
+  public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler) {
+    parent::__construct('Plugin/PlanRecord/PlanRecordType', $namespaces, $module_handler, 'Drupal\farm_entity\Plugin\PlanRecord\PlanRecordType\PlanRecordTypeInterface', 'Drupal\farm_entity\Annotation\PlanRecordType');
+
+    $this->alterInfo('plan_record_type_info');
+    $this->setCacheBackend($cache_backend, 'plan_record_type_plugins');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function processDefinition(&$definition, $plugin_id) {
+    parent::processDefinition($definition, $plugin_id);
+
+    foreach (['id', 'label'] as $required_property) {
+      if (empty($definition[$required_property])) {
+        throw new PluginException(sprintf('The plan record relationship type %s must define the %s property.', $plugin_id, $required_property));
+      }
+    }
+  }
+
+}

modules/core/entity/src/Plugin/PlanRecord/PlanRecordType/FarmPlanRecordType.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace Drupal\farm_entity\Plugin\PlanRecord\PlanRecordType;
+
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+
+/**
+ * Provides a farmOS plan record relationship type base class.
+ */
+class FarmPlanRecordType extends PlanRecordTypeBase {
+
+  use StringTranslationTrait;
+
+}

modules/core/entity/src/Plugin/PlanRecord/PlanRecordType/PlanRecordTypeBase.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace Drupal\farm_entity\Plugin\PlanRecord\PlanRecordType;
+
+use Drupal\farm_entity\FarmEntityTypeBase;
+
+/**
+ * Provides the base plan record relationship type class.
+ */
+abstract class PlanRecordTypeBase extends FarmEntityTypeBase implements PlanRecordTypeInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getLabel() {
+    return $this->pluginDefinition['label'];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildFieldDefinitions() {
+    return [];
+  }
+
+}

modules/core/entity/src/Plugin/PlanRecord/PlanRecordType/PlanRecordTypeInterface.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace Drupal\farm_entity\Plugin\PlanRecord\PlanRecordType;
+
+use Drupal\entity\BundlePlugin\BundlePluginInterface;
+
+/**
+ * Defines the interface for plan record relationship types.
+ */
+interface PlanRecordTypeInterface extends BundlePluginInterface {
+
+  /**
+   * Gets the plan record relationship type label.
+   *
+   * @return string
+   *   The plan record relationship type label.
+   */
+  public function getLabel();
+
+}