Engine: Add buildIndexMappings() helper (single typeless mapping)

Single 'properties' block, documentType as a keyword field inside it,
no include_in_all anywhere (the field was removed in ES 6).
Relationships emit as keyword fields with doc_values: false, matching
the bundled engine's ES-5-mode behavior. Field-data multi-analyzer
shape (raw, keywords, stems) preserved.

🤖 Generated by [robots](https://vyos.io)

2 files changed, 101 insertions, 0 deletions

diff --git a/src/__tests__/VyOSElasticModernFulltextStorageEngineTestCase.php b/src/__tests__/VyOSElasticModernFulltextStorageEngineTestCase.php
index ff4ade8..ab6f5c6 100644
--- a/src/__tests__/VyOSElasticModernFulltextStorageEngineTestCase.php
+++ b/src/__tests__/VyOSElasticModernFulltextStorageEngineTestCase.php
@@ -112,4 +112,58 @@ final class VyOSElasticModernFulltextStorageEngineTestCase
       $filter);
   }
 
+  public function testBuildIndexMappingsShape() {
+    $engine = id(new VyOSElasticModernFulltextStorageEngine())
+      ->setVersion(7);
+
+    $doc_types = array('TASK', 'DREV');
+    $fields = array('title', 'body', 'comment');
+    $relationships = array('authorPHID', 'projectPHID');
+    $mappings = $engine->buildIndexMappings(
+      $doc_types, $fields, $relationships, 'text');
+
+    // Single typeless mapping with one 'properties' block.
+    $this->assertTrue(isset($mappings['properties']));
+    $this->assertFalse(isset($mappings['TASK']));
+    $this->assertFalse(isset($mappings['DREV']));
+
+    // Field properties exist with the multi-analyzer shape.
+    $this->assertTrue(isset($mappings['properties']['title']));
+    $this->assertEqual('text', $mappings['properties']['title']['type']);
+    $this->assertTrue(
+      isset($mappings['properties']['title']['fields']['raw']));
+    $this->assertTrue(
+      isset($mappings['properties']['title']['fields']['keywords']));
+    $this->assertTrue(
+      isset($mappings['properties']['title']['fields']['stems']));
+
+    // Relationships emit as keyword fields with doc_values:false.
+    $this->assertEqual(
+      'keyword',
+      $mappings['properties']['authorPHID']['type']);
+    $this->assertEqual(
+      false,
+      $mappings['properties']['authorPHID']['doc_values']);
+    $this->assertEqual(
+      'date',
+      $mappings['properties']['authorPHID_ts']['type']);
+
+    // No include_in_all anywhere.
+    $this->assertFalse(
+      isset($mappings['properties']['authorPHID']['include_in_all']));
+
+    // documentType is a keyword field inside properties.
+    $this->assertEqual(
+      'keyword',
+      $mappings['properties']['documentType']['type']);
+
+    // Standard date fields present.
+    $this->assertEqual(
+      'date',
+      $mappings['properties']['dateCreated']['type']);
+    $this->assertEqual(
+      'date',
+      $mappings['properties']['lastModified']['type']);
+  }
+
 }
diff --git a/src/engine/VyOSElasticModernFulltextStorageEngine.php b/src/engine/VyOSElasticModernFulltextStorageEngine.php
index 316a02b..16c519c 100644
--- a/src/engine/VyOSElasticModernFulltextStorageEngine.php
+++ b/src/engine/VyOSElasticModernFulltextStorageEngine.php
@@ -48,6 +48,53 @@ abstract class VyOSElasticModernFulltextStorageEngine
     );
   }
 
+  public function buildIndexMappings(
+    array $doc_types, array $fields, array $relationships, $text_type) {
+
+    $properties = array();
+
+    foreach ($fields as $field) {
+      $properties[$field] = array(
+        'type'   => $text_type,
+        'fields' => array(
+          'raw' => array(
+            'type'                  => $text_type,
+            'analyzer'              => 'english_exact',
+            'search_analyzer'       => 'english',
+            'search_quote_analyzer' => 'english_exact',
+          ),
+          'keywords' => array(
+            'type'     => $text_type,
+            'analyzer' => 'letter_stop',
+          ),
+          'stems' => array(
+            'type'     => $text_type,
+            'analyzer' => 'english_stem',
+          ),
+        ),
+      );
+    }
+
+    foreach ($relationships as $rel) {
+      $properties[$rel] = array(
+        'type'       => 'keyword',
+        'doc_values' => false,
+      );
+      $properties[$rel.'_ts'] = array(
+        'type' => 'date',
+      );
+    }
+
+    $properties['documentType'] = array('type' => 'keyword');
+    $properties['dateCreated']  = array('type' => 'date');
+    $properties['lastModified'] = array('type' => 'date');
+
+    // The $doc_types parameter is part of the signature for symmetry
+    // with the bundled engine's per-type loop, but the typeless API
+    // emits one mapping shared across all doc types.
+    return array('properties' => $properties);
+  }
+
   public function getEngineIdentifier() {
     return 'elasticsearch-modern';
   }