Support equality filter in db.ListProperty

python/src/mapreduce/input_readers.py

@@ -670,6 +670,11 @@ def _validate_filters(cls, filters, model_class):
             "Property %s is not defined for entity type %s",
             prop, model_class.kind())
 
+      if isinstance(properties[prop], db.ListProperty):
+        # for db.ListProperty validate expect a list, but filter expect
+        # a single value
+        val = [val]
+
       # Validate the value of each filter. We need to know filters have
       # valid value to carry out splits.
       try:

python/test/mapreduce/input_readers_test.py

@@ -810,6 +810,12 @@ def testValidate_Filters(self):
                       self.reader_cls.validate,
                       mapper_spec)
 
+    params["filters"] = [('mvp_str', '=', '1')]
+    self.reader_cls.validate(mapper_spec)
+
+    params["filters"] = [('mvp_int', '=', 1)]
+    self.reader_cls.validate(mapper_spec)
+
   def _set_vals(self, entities, a_vals, b_vals):
     """Set a, b values for entities."""
     vals = []

python/test/testlib/testutil.py

@@ -92,6 +92,8 @@ class TestEntity(db.Model):
 
   a = db.IntegerProperty()
   b = db.IntegerProperty()
+  mvp_str = db.StringListProperty()
+  mvp_int = db.ListProperty(int, required=True, indexed=True)
 
 
 class NdbTestEntity(ndb.Model):
@@ -100,6 +102,9 @@ class NdbTestEntity(ndb.Model):
   a = ndb.IntegerProperty()
   b = ndb.IntegerProperty()
 
+  mvp_str = ndb.StringProperty(repeated=True)
+  mvp_int = ndb.IntegerProperty(repeated=True)
+
 
 class TestEntityWithDot(db.Model):
   """Test entity class with dot in its kind."""