Better CompositeType and ArrayType Get implementation

array_type.go

@@ -84,7 +84,11 @@ func (dst *ArrayType) Set(src interface{}) error {
 func (dst ArrayType) Get() interface{} {
 	switch dst.status {
 	case Present:
-		return dst.elements
+		elementValues := make([]interface{}, len(dst.elements))
+		for i := range dst.elements {
+			elementValues[i] = dst.elements[i].Get()
+		}
+		return elementValues
 	case Null:
 		return nil
 	default:

composite_type.go

@@ -59,9 +59,9 @@ func NewCompositeTypeValues(typeName string, fields []CompositeTypeField, values
 func (src CompositeType) Get() interface{} {
 	switch src.status {
 	case Present:
-		results := make([]interface{}, len(src.valueTranscoders))
-		for i := range results {
-			results[i] = src.valueTranscoders[i].Get()
+		results := make(map[string]interface{}, len(src.valueTranscoders))
+		for i := range src.valueTranscoders {
+			results[src.fields[i].Name] = src.valueTranscoders[i].Get()
 		}
 		return results
 	case Null:

composite_type_test.go

@@ -37,19 +37,19 @@ func TestCompositeTypeSetAndGet(t *testing.T) {
 
 	compatibleValuesTests := []struct {
 		src      []interface{}
-		expected []interface{}
+		expected map[string]interface{}
 	}{
 		{
 			src:      []interface{}{"foo", int32(42)},
-			expected: []interface{}{"foo", int32(42)},
+			expected: map[string]interface{}{"a": "foo", "b": int32(42)},
 		},
 		{
 			src:      []interface{}{nil, nil},
-			expected: []interface{}{nil, nil},
+			expected: map[string]interface{}{"a": nil, "b": nil},
 		},
 		{
 			src:      []interface{}{&pgtype.Text{String: "hi", Status: pgtype.Present}, &pgtype.Int4{Int: 7, Status: pgtype.Present}},
-			expected: []interface{}{"hi", int32(7)},
+			expected: map[string]interface{}{"a": "hi", "b": int32(7)},
 		},
 	}