iOS Question Json to Type and Type to Json

[narek adonts]

Hi,

I would like to know if there is away to convert a json string to custom Type and vice versa (something like google gson).
I think the solution is implemented already as Read/WriteB4X object are doing something similar but it saved as bytes.
So maybe somebody know the solution behind.

Narek

 

[Erel]

You can write a simple method that converts the json string to a custom type. It will not happen automatically.

Another option is to use WriteB4XObject instead of json: https://www.b4x.com/android/forum/threads/server-send-and-receive-objects.37206/#content

The above example uses WriteObject but it should be trivial to change it to use WriteB4XObject.

 

[narek adonts]

I know about WriteB4XObject but for some tasks is to slow. I though maybe you will disclose the algorithm of converting a type to a string ))

 

[Erel]

Serializing objects with WriteB4XObject / ReadB4XObject will be faster than serializing objects with json.

 

[narek adonts]

Are you sure? Are there any numbers?

I switched to JSON as I thought that maybe one day I will use another app to build the server instead of B4j.

 

[Erel]

Are you sure? Are there any numbers?

I didn't make any performance tests. Go ahead create a small test and post the results.

 

[narek adonts]

You were right. It is faster and it much smaller then json string(compressed).
Will be happy to use it.
But maybe you should make the WriteB4XObject/ReadB4XObject open source or publish the algorithm so we will be able to use it if we will decide to switch the Server side app.

Narek