java.util.Date serialization on RPC...

[Hilario Perez Corona]

Hi,

I'm working on a Go implementation of GWT-RPC... It's in a very early stage, but it's working fine for most objects...

One object that i don't know how to convert is the java.util.Date class.

It sends something like this: TGyZwy5

And i don't have a clue of how to convert it to milliseconds, nanoseconds, or anything that it used to be before serialization.

Any help would be very appreciated.

Thanx.

[Hilario Perez Corona]

Ok, i've resolved the mistery... And if anyone is wondering, here's how it works.

The date is a simple Long value containing the milliseconds.

It is encoded in something that looks like base64, but using this characters:

ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789$_

Where:

A = 0

B = 1

_ = 63

BA = 64

P__________ = -1

P_________$ = -2

So, my code to convert it back to a long ended up like this:

const gwtLongChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789$_"

func ToLong(v string) (int64, os.Error) {

var t int64 = 0

for i := 0; i < len(v); i++ {

c := v[i:i+1]

idx := strings.Index(gwtLongChars, c)

if idx < 0 {

return 0, os.NewError(fmt.Sprintf("Not long GWT, found: %s", c))

}

t = t * 64 + int64(idx)

}

return t, nil

}

Hope it's helpful for someone else.

Thanks.