gobject_from_data


Description:

[ Version ( since = "0.10" ) ]
public Object gobject_from_data (Type gtype, string data, ssize_t length = -1) throws Error

Deserializes a JSON data stream and creates the corresponding Object class.

If gtype implements the Serializable interface, it will be asked to deserialize all the JSON members into the respective properties; otherwise, the default implementation will be used to translate the compatible JSON native types.

Note: the JSON data stream must be an object declaration.

Example: GObject deserialization (string):

public enum MyEnum {
FOO, BAR, FOOBAR
}

public class MyObject : Object {
public string str { get; set; }
public MyEnum en { get; set; }
public int num { get; set; }

public string to_string () {
StringBuilder builder = new StringBuilder ();
builder.append_printf ("str = %s\n", str);
builder.append_printf ("en = %s\n", en.to_string ());
builder.append_printf ("num = %d", num);
return (owned) builder.str;
}
}

public static int main (string[] args) {
string data = """
{
"str" : "my string",
"en" : 2,
"num" : 10
}"""
;

try {
MyObject obj = Json.gobject_from_data (typeof (MyObject), data) as MyObject;
assert (obj != null);

// Output:
// ``str = my string``
// ``en = MY_ENUM_FOOBAR``
// ``num = 10``
print (obj.to_string ());
print ("\n");
} catch (Error e) {
print ("Error: %s\n", e.message);
}

return 0;
}

valac --pkg json-glib-1.0 deserialization-data.vala

Parameters:

gtype

the Type of object to construct

data

a JSON data stream

length

length of the data stream, or -1 if it is NUL-terminated

Returns:

a Object or null


Namespace: Json
Package: json-glib-1.0