OpenConceptLab/ocl_issues#1082 Add GIN, GIST, TRGM extensions and con…

…cepts uri index

core/common/migrations/0001_create_ext_btree_gist.py

@@ -0,0 +1,13 @@
+# Generated by Django 3.2.8 on 2021-11-09 09:56
+from django.contrib.postgres.operations import BtreeGistExtension
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+    ]
+
+    operations = [
+        BtreeGistExtension()
+    ]

core/common/migrations/0002_create_ext_trigram.py

@@ -0,0 +1,14 @@
+# Generated by Django 3.2.8 on 2021-11-09 09:59
+from django.contrib.postgres.operations import TrigramExtension
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('common', '0001_create_ext_btree_gist'),
+    ]
+
+    operations = [
+        TrigramExtension()
+    ]

core/common/migrations/0003_create_ext_btree_gin.py

@@ -0,0 +1,14 @@
+# Generated by Django 3.2.8 on 2021-11-09 10:03
+from django.contrib.postgres.operations import BtreeGinExtension
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('common', '0002_create_ext_trigram'),
+    ]
+
+    operations = [
+        BtreeGinExtension()
+    ]

core/concepts/migrations/0024_concept_concepts_uri_trgm_id_gin_idx.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2.8 on 2021-11-09 10:14
+
+import django.contrib.postgres.indexes
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('concepts', '0023_concept_concepts_public_conditional'),
+    ]
+
+    operations = [
+        migrations.AddIndex(
+            model_name='concept',
+            index=django.contrib.postgres.indexes.GinIndex(condition=models.Q(('is_latest_version', True)), fields=['uri', 'id'], name='concepts_uri_trgm_id_gin_idx', opclasses=['gin_trgm_ops', 'int8_ops']),
+        ),
+    ]

core/concepts/models.py

@@ -1,4 +1,5 @@
 from django.conf import settings
+from django.contrib.postgres.indexes import GinIndex
 from django.core.exceptions import ValidationError
 from django.core.validators import RegexValidator
 from django.db import models, IntegrityError, transaction, connection
@@ -149,6 +150,7 @@ class Meta:
             models.Index(name='concepts_public_conditional', fields=['public_access'],
                          condition=(Q(is_active=True) & Q(retired=False) & Q(is_latest_version=True) &
                                     ~Q(public_access='None'))),
+            GinIndex(name='concepts_uri_trgm_id_gin_idx', fields=['uri', 'id'], opclasses=['gin_trgm_ops', 'int8_ops'], condition=Q(is_latest_version=True))
         ] + VersionedModel.Meta.indexes
 
     external_id = models.TextField(null=True, blank=True)