Use map generator for maps field; skip entry message.

src/google/protobuf/compiler/javanano/javanano_field.cc

@@ -36,6 +36,7 @@
 #include <google/protobuf/compiler/javanano/javanano_helpers.h>
 #include <google/protobuf/compiler/javanano/javanano_primitive_field.h>
 #include <google/protobuf/compiler/javanano/javanano_enum_field.h>
+#include <google/protobuf/compiler/javanano/javanano_map_field.h>
 #include <google/protobuf/compiler/javanano/javanano_message_field.h>
 #include <google/protobuf/stubs/common.h>
 
@@ -97,7 +98,11 @@ FieldGenerator* FieldGeneratorMap::MakeGenerator(const FieldDescriptor* field,
   if (field->is_repeated()) {
     switch (java_type) {
       case JAVATYPE_MESSAGE:
-        return new RepeatedMessageFieldGenerator(field, params);
+        if (IsMapEntry(field->message_type())) {
+          return new MapFieldGenerator(field, params);
+        } else {
+          return new RepeatedMessageFieldGenerator(field, params);
+        }
       case JAVATYPE_ENUM:
         return new RepeatedEnumFieldGenerator(field, params);
       default:

src/google/protobuf/compiler/javanano/javanano_message.cc

@@ -90,6 +90,7 @@ void MessageGenerator::GenerateStaticVariables(io::Printer* printer) {
   // Generate static members for all nested types.
   for (int i = 0; i < descriptor_->nested_type_count(); i++) {
     // TODO(kenton):  Reuse MessageGenerator objects?
+    if (IsMapEntry(descriptor_->nested_type(i))) continue;
     MessageGenerator(descriptor_->nested_type(i), params_)
       .GenerateStaticVariables(printer);
   }
@@ -100,6 +101,7 @@ void MessageGenerator::GenerateStaticVariableInitializers(
   // Generate static member initializers for all nested types.
   for (int i = 0; i < descriptor_->nested_type_count(); i++) {
    // TODO(kenton):  Reuse MessageGenerator objects?
+    if (IsMapEntry(descriptor_->nested_type(i))) continue;
     MessageGenerator(descriptor_->nested_type(i), params_)
       .GenerateStaticVariableInitializers(printer);
   }
@@ -159,6 +161,7 @@ void MessageGenerator::Generate(io::Printer* printer) {
   }
 
   for (int i = 0; i < descriptor_->nested_type_count(); i++) {
+    if (IsMapEntry(descriptor_->nested_type(i))) continue;
     MessageGenerator(descriptor_->nested_type(i), params_).Generate(printer);
   }