Cross-posting from stackoverflow
<https://stackoverflow.com/questions/48821916/how-to-convert-protocol-buffer-message-to-a-hashmap-in-java>
I have a protobuf message of the form
enum PolicyValidationType {
Number = 0;}
message NumberPolicyValidation {
optional int64 maxValue = 1;
optional int64 minValue = 2;}
message PolicyObject {
required string key = 1;
optional string value = 2;
optional string name = 3;
optional PolicyValidationType validationType = 4;
optional NumberPolicyValidation numberPolicyValidation = 5;}
For example
policyObject {
key: "sessionIdleTimeoutInSecs"
value: "1800"
name: "Session Idle Timeout"
validationType: Number
numberPolicyValidation {
maxValue: 3600
minValue: 5
}}
Can someone let me know how can I convert this to a Map like below:-
{validationType=Number, name=Session Idle Timeout,
numberPolicyValidation={maxValue=3600.0, minValue=5.0}, value=1800,
key=sessionIdleTimeoutInSecs}
One way I can think of is convert this to a json and then convert the json
to map?
PolicyObject policyObject;...JsonFormat jsonFormat = new JsonFormat();final
String s = jsonFormat.printToString(policyObject);Type objectMapType = new
TypeToken<HashMap<String, Object>>() {}.getType();Gson gson = new
GsonBuilder().registerTypeAdapter(new
TypeToken<HashMap<String,Object>>(){}.getType(), new
PrimitiveDeserializer()).create();Map<String, Object> mappedObject =
gson.fromJson(s, objectMapType);
I think there must be some better way. Can someone suggest any better
approach?
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