Make typeless APIs usable with indices whose type name is different from _doc

rest-api-spec/src/main/resources/rest-api-spec/test/bulk/70_mix_typeless_typeful.yml

@@ -0,0 +1,34 @@
+---
+"bulk without types on an index that has types":
+
+ - skip:
+      version: " - 6.99.99"
+      reason: Typeless APIs were introduced in 7.0.0
+
+ - do:
+      indices.create: # not using include_type_name: false on purpose
+          index: index
+          body:
+              mappings:
+                  not_doc:
+                      properties:
+                          foo:
+                              type: "keyword"
+ - do:
+      bulk:
+        refresh: true
+        body:
+          - index:
+              _index: index
+              _id:    0
+          - foo: bar
+          - index:
+              _index: index
+              _id:    1
+          - foo: bar
+
+ - do:
+      count:
+        index: index
+
+ - match: {count: 2}

rest-api-spec/src/main/resources/rest-api-spec/test/mtermvectors/30_mix_typeless_typeful.yml

@@ -0,0 +1,33 @@
+---
+"mtermvectors without types on an index that has types":
+
+ - skip:
+      version: " - 6.99.99"
+      reason: Typeless APIs were introduced in 7.0.0
+
+ - do:
+      indices.create: # not using include_type_name: false on purpose
+          index: index
+          body:
+              mappings:
+                  not_doc:
+                      properties:
+                          foo:
+                              type :         "text"
+                              term_vector :  "with_positions_offsets"
+
+ - do:
+      index:
+          index:  index
+          id:     1
+          body:   { foo: bar }
+
+ - do:
+      mtermvectors:
+          body :
+              docs:
+                  -
+                      _index : index
+                      _id : 1
+
+ - match: {docs.0.term_vectors.foo.terms.bar.term_freq: 1}

server/src/main/java/org/elasticsearch/action/termvectors/MultiTermVectorsRequest.java

@@ -29,6 +29,7 @@
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.common.xcontent.XContentParser;
+import org.elasticsearch.index.mapper.MapperService;
 
 import java.io.IOException;
 import java.util.ArrayList;
@@ -101,6 +102,7 @@ public void add(TermVectorsRequest template, @Nullable XContentParser parser) th
                                 throw new IllegalArgumentException("docs array element should include an object");
                             }
                             TermVectorsRequest termVectorsRequest = new TermVectorsRequest(template);
+                            termVectorsRequest.type(MapperService.SINGLE_MAPPING_NAME);
                             TermVectorsRequest.parseRequest(termVectorsRequest, parser);
                             add(termVectorsRequest);
                         }