+sub json_decode
+{
+ my $s = shift;
+ my $ref;
+ eval { $ref = $json->decode($s) };
+ if ($ref && !$@) {
+ return bless $ref, __PACKAGE__;
+ } else {
+ LogDbg('DXUser', "__PACKAGE_::json_decode: on '$s' $@");
+ }
+ return undef;
+}
+
+sub json_encode
+{
+ my $ref = shift;
+ unbless($ref);
+ my $s = $json->encode($ref);
+ bless $ref, __PACKAGE__;
+ return $s;
+}
+