[es.py] small library to compute indexable types

es.py

+# -*- coding: utf-8 -*-
+# copyright 2016 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+# contact http://www.logilab.fr -- mailto:contact@logilab.fr
+
+INDEXABLE_TYPES = None
+
+
+def index_settings():
+    return {'analysis':
+            {'analyzer':
+             {'default': {'filter': ['standard',
+                                     'my_ascii_folding'],
+                          'tokenizer': 'standard'}},
+             'filter': {'my_ascii_folding': {'preserve_original': True,
+                                             'type': 'asciifolding'}}}}
+
+
+def indexable_types(schema):
+    global INDEXABLE_TYPES
+    if INDEXABLE_TYPES is not None:
+        return INDEXABLE_TYPES
+    indexable_types = []
+    skip_list = ('TrInfo', 'EmailAddress')
+    for eschema in schema.entities():
+        if eschema.type in skip_list:
+            continue
+        if not eschema.final:
+            # check eschema.fulltext_relations() ? (skip wf_info_for ?
+            # )
+            if list(eschema.indexable_attributes()):
+                indexable_types.append(eschema.type)
+    INDEXABLE_TYPES = indexable_types
+    return indexable_types