Fixed issue with collection types in udt. empty type colums skiped. Added test for udt.

Author: pavle995

Diff for: cmd/schemagen/keyspace.tmpl

@@ -40,10 +40,10 @@ var (
 {{range .}}
 {{- $type_name := .Name | camelize}}
 {{- $field_types := .FieldTypes}}
-type {{$type_name}}Type struct {
+type {{$type_name}}UserType struct {
 {{- range $index, $element := .FieldNames}}
     {{- $type := index $field_types $index}}
-    {{. | camelize}} {{getNativeTypeSting $type | mapScyllaToGoType}}
+    {{. | camelize}} {{typeToString $type | mapScyllaToGoType}}
 {{- end}}
 }
 {{- end}}
@@ -54,7 +54,9 @@ type {{$type_name}}Type struct {
 {{- $model_name := .Name | camelize}}
 type {{$model_name}}Struct struct {
 {{- range .Columns}}
+	{{- if not (eq .Validator "empty") }}
 	{{.Name | camelize}} {{.Validator | mapScyllaToGoType}}
+	{{- end}}
 {{- end}}
 }
 {{- end}}

Diff for: cmd/schemagen/map_types.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"fmt"
 	"regexp"
 	"strconv"
 	"strings"
@@ -33,11 +34,17 @@ var types = map[string]string{
 }
 
 func mapScyllaToGoType(s string) string {
+	frozenRegex := regexp.MustCompile(`frozen<([a-z]*)>`)
+	match := frozenRegex.FindAllStringSubmatch(s, -1)
+	if match != nil {
+		s = match[0][1]
+	}
+
 	mapRegex := regexp.MustCompile(`map<([a-z]*), ([a-z]*)>`)
 	setRegex := regexp.MustCompile(`set<([a-z]*)>`)
 	listRegex := regexp.MustCompile(`list<([a-z]*)>`)
 	tupleRegex := regexp.MustCompile(`tuple<(?:([a-z]*),? ?)*>`)
-	match := mapRegex.FindAllStringSubmatch(s, -1)
+	match = mapRegex.FindAllStringSubmatch(s, -1)
 	if match != nil {
 		key := match[0][1]
 		value := match[0][2]
@@ -79,9 +86,20 @@ func mapScyllaToGoType(s string) string {
 		return t
 	}
 
-	return camelize(s) + "Type"
+	return camelize(s) + "UserType"
 }
 
-func getNativeTypeSting(t gocql.NativeType) string {
-	return t.String()
+func typeToString(t interface{}) string {
+	tType := fmt.Sprintf("%T", t)
+	switch tType {
+	case "gocql.NativeType":
+		return t.(gocql.NativeType).String()
+	case "gocql.CollectionType":
+		collectionType := t.(gocql.CollectionType).String()
+		collectionType = strings.Replace(collectionType, "(", "<", -1)
+		collectionType = strings.Replace(collectionType, ")", ">", -1)
+		return collectionType
+	default:
+		panic(fmt.Sprintf("Did not expect %v type in user defined type", tType))
+	}
 }

Diff for: cmd/schemagen/schemagen.go

@@ -75,7 +75,7 @@ func renderTemplate(md *gocql.KeyspaceMetadata) ([]byte, error) {
 		New("keyspace.tmpl").
 		Funcs(template.FuncMap{"camelize": camelize}).
 		Funcs(template.FuncMap{"mapScyllaToGoType": mapScyllaToGoType}).
-		Funcs(template.FuncMap{"getNativeTypeSting": getNativeTypeSting}).
+		Funcs(template.FuncMap{"typeToString": typeToString}).
 		Parse(keyspaceTmpl)
 
 	if err != nil {

Diff for: cmd/schemagen/schemagen_test.go

@@ -56,10 +56,17 @@ func createTestSchema(t *testing.T) {
 		t.Fatal("create table:", err)
 	}
 
+	err = session.ExecStmt(`CREATE TYPE IF NOT EXISTS schemagen.album (
+		name text,
+		songwriters set<text>,)`)
+	if err != nil {
+		t.Fatal("create type:", err)
+	}
+
 	err = session.ExecStmt(`CREATE TABLE IF NOT EXISTS schemagen.playlists (
 		id uuid,
 		title text,
-		album text, 
+		album frozen<album>, 
 		artist text,
 		song_id uuid,
 		PRIMARY KEY (id, title, album, artist))`)

Diff for: cmd/schemagen/testdata/models.go.txt

@@ -44,8 +44,13 @@ var (
 	})
 )
 
+type AlbumUserType struct {
+	Name        string
+	Songwriters []string
+}
+
 type PlaylistsStruct struct {
-	Album  string
+	Album  AlbumUserType
 	Artist string
 	Id     [16]byte
 	SongId [16]byte