[Ref] [Import] move metadata calculations to a trait

CRM/Contact/Import/MetadataTrait.php

@@ -0,0 +1,122 @@
+<?php
+
+/**
+ * Trait CRM_Contact_Import_MetadataTrait
+ *
+ * Trait for handling contact import specific metadata so it
+ * does not need to be passed from one form to the next.
+ */
+trait CRM_Contact_Import_MetadataTrait {
+
+  /**
+   * Get metadata for contact importable fields.
+   *
+   * @return array
+   */
+  protected function getContactImportMetadata(): array {
+    $cacheKey = 'importable_contact_field_metadata' . $this->getContactType() . $this->getContactSubType();
+    if (Civi::cache('fields')->has($cacheKey)) {
+      return Civi::cache('fields')->get($cacheKey);
+    }
+    $contactFields = CRM_Contact_BAO_Contact::importableFields($this->getContactType());
+    // exclude the address options disabled in the Address Settings
+    $fields = CRM_Core_BAO_Address::validateAddressOptions($contactFields);
+
+    //CRM-5125
+    //supporting import for contact subtypes
+    $csType = NULL;
+    if ($this->getContactSubType()) {
+      //custom fields for sub type
+      $subTypeFields = CRM_Core_BAO_CustomField::getFieldsForImport($this->getContactSubType());
+
+      if (!empty($subTypeFields)) {
+        foreach ($subTypeFields as $customSubTypeField => $details) {
+          $fields[$customSubTypeField] = $details;
+        }
+      }
+    }
+
+    foreach ($this->getRelationships() as $key => $var) {
+      list($type) = explode('_', $key);
+      $relationshipType[$key]['title'] = $var;
+      $relationshipType[$key]['headerPattern'] = '/' . preg_quote($var, '/') . '/';
+      $relationshipType[$key]['import'] = TRUE;
+      $relationshipType[$key]['relationship_type_id'] = $type;
+      $relationshipType[$key]['related'] = TRUE;
+    }
+
+    if (!empty($relationshipType)) {
+      $fields = array_merge($fields, [
+        'related' => [
+          'title' => ts('- related contact info -'),
+        ],
+      ], $relationshipType);
+    }
+    Civi::cache('fields')->set($cacheKey, $fields);
+    return $fields;
+  }
+
+  /**
+   * Get sorted available relationships.
+   *
+   * @return array
+   */
+  protected function getRelationships(): array {
+    $cacheKey = 'importable_contact_relationship_field_metadata' . $this->getContactType() . $this->getContactSubType();
+    if (Civi::cache('fields')->has($cacheKey)) {
+      return Civi::cache('fields')->get($cacheKey);
+    }
+    //Relationship importables
+    $relations = CRM_Contact_BAO_Relationship::getContactRelationshipType(
+      NULL, NULL, NULL, $this->getContactType(),
+      FALSE, 'label', TRUE, $this->getContactSubType()
+    );
+    asort($relations);
+    Civi::cache('fields')->set($cacheKey, $relations);
+    return $relations;
+  }
+
+  /**
+   * Get an array of header patterns for importable keys.
+   *
+   * @return array
+   */
+  public function getHeaderPatterns() {
+    return CRM_Utils_Array::collect('headerPattern', $this->getContactImportMetadata());
+  }
+
+  /**
+   * Get an array of header patterns for importable keys.
+   *
+   * @return array
+   */
+  public function getDataPatterns() {
+    return CRM_Utils_Array::collect('dataPattern', $this->getContactImportMetadata());
+  }
+
+  /**
+   * Get an array of header patterns for importable keys.
+   *
+   * @return array
+   */
+  public function getFieldTitles() {
+    return CRM_Utils_Array::collect('title', $this->getContactImportMetadata());
+  }
+
+  /**
+   * Get configured contact type.
+   */
+  protected function getContactType() {
+    return $this->_contactType ?? 'Individual';
+  }
+
+  /**
+   * Get configured contact sub type.
+   *
+   * @return string
+   */
+  protected function getContactSubType() {
+    return $this->_contactSubType ?? NULL;
+  }
+
+}

CRM/Contact/Import/Parser/Contact.php

@@ -37,6 +37,9 @@
  * class to parse contact csv files
  */
 class CRM_Contact_Import_Parser_Contact extends CRM_Contact_Import_Parser {
+
+  use CRM_Contact_Import_MetadataTrait;
+
   protected $_mapperKeys = [];
   protected $_mapperLocType = [];
   protected $_mapperPhoneType;
@@ -2054,49 +2057,9 @@ public static function getParameterForParser($count) {
    * Set field metadata.
    */
   protected function setFieldMetadata() {
-    $contactFields = CRM_Contact_BAO_Contact::importableFields($this->_contactType);
-    // exclude the address options disabled in the Address Settings
-    $fields = CRM_Core_BAO_Address::validateAddressOptions($contactFields);
-
-    //CRM-5125
-    //supporting import for contact subtypes
-    $csType = NULL;
-    if (!empty($this->_contactSubType)) {
-      //custom fields for sub type
-      $subTypeFields = CRM_Core_BAO_CustomField::getFieldsForImport($this->_contactSubType);
-
-      if (!empty($subTypeFields)) {
-        foreach ($subTypeFields as $customSubTypeField => $details) {
-          $fields[$customSubTypeField] = $details;
-        }
-      }
-    }
-
-    //Relationship importables
-    $this->_relationships = $relations
-      = CRM_Contact_BAO_Relationship::getContactRelationshipType(
-      NULL, NULL, NULL, $this->_contactType,
-      FALSE, 'label', TRUE, $this->_contactSubType
-    );
-    asort($relations);
-
-    foreach ($relations as $key => $var) {
-      list($type) = explode('_', $key);
-      $relationshipType[$key]['title'] = $var;
-      $relationshipType[$key]['headerPattern'] = '/' . preg_quote($var, '/') . '/';
-      $relationshipType[$key]['import'] = TRUE;
-      $relationshipType[$key]['relationship_type_id'] = $type;
-      $relationshipType[$key]['related'] = TRUE;
-    }
-
-    if (!empty($relationshipType)) {
-      $fields = array_merge($fields, [
-        'related' => [
-          'title' => ts('- related contact info -'),
-        ],
-      ], $relationshipType);
-    }
-    $this->setImportableFieldsMetadata($fields);
+    $this->setImportableFieldsMetadata($this->getContactImportMetadata());
+    // Probably no longer needed but here for now.
+    $this->_relationships = $this->getRelationships();
   }
 
 }