feat(p2) Added hessian2 enumeration support for dubbo (#88)

pkg/hessian2/enum/enum.go

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2024 CloudWeGo Authors
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package enum
+
+import (
+	hessian "github.com/apache/dubbo-go-hessian2"
+)
+
+const InvalidJavaEnum JavaEnum = -1
+
+type JavaEnum hessian.JavaEnum

pkg/hessian2/hessian2.go

@@ -43,6 +43,11 @@ type (
 
 func Register(pojos []interface{}) {
 	for _, i := range pojos {
-		hessian.RegisterPOJO(i.(hessian.POJO))
+		pojo, ok := i.(hessian.POJOEnum)
+		if ok {
+			hessian.RegisterJavaEnum(pojo)
+		} else {
+			hessian.RegisterPOJO(i.(hessian.POJO))
+		}
 	}
 }