Alex, many thanks for your responses. I'd like to use the array's 'push'
method, but I'm loading the objects from a file, while the filestream has
bytesavailable, like this:
while(stream.bytesAvailable){
_whatshouldIuseHere = stream.readObject() as DocumentFile;//
var aDoc:DocumentFile = stream.readObject() as DocumentFile;//only stores
the last saved DocumentFile, no matter if I have other objects stored
}
The question should be: given a file, that stores some objects saved in AMF
format. What can I do to retrieve each object, filter?
____________________________________
Claudio M. E. Bastos Iorio
<http://www.blumer.com.ar/> http://www.blumer.com.ar
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Alex Harui
Sent: Thursday, August 14, 2008 4:46 PM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] Re: writeObject() and readObject()
I think I don't understand your problem. Normally, if you know how many you
are going to write, you would do:
arr.push(someDocumentFile);
arr.push(someOtherDocumentFile);
var numFiles:int = arr.length;
writeObject(numFiles);
for (var i:int = 0; I < numFiles, i++)
writeObject(arr[i]);
And read it back like this:
Arr = [];
Var numFiles;
numFiles = readObject();
for (var i:int = 0; I < numFiles, i++)
arr.push(readObject());
If you don't know, how many, you might want to use a tagged file format
_____
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Claudio M. E. Bastos Iorio
Sent: Wednesday, August 13, 2008 10:12 PM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] Re: writeObject() and readObject()
Could be. But forgive If I don't realize: how could I read the fileStream in
that way?
Right now I read it this way:
while(stream.bytesAvailable){
arr = stream.readObject() as DocumentFile;//bad cast
}
I also tried this:
arr[0] = stream.readObject() as DocumentFile;//assigns the last
DocumentFile saved in the file..
____________________________________
Claudio M. E. Bastos Iorio
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Alex Harui
Sent: Thursday, August 14, 2008 1:21 AM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] Re: writeObject() and readObject()
I would write out the number of DocumentFiles before writing them out, then
when reading, I'd read that number and know how many to expect
_____
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Claudio M. E. Bastos Iorio
Sent: Wednesday, August 13, 2008 9:13 PM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] Re: writeObject() and readObject()
Thanks for answer.
But what can I do if I have many DocumentFile objects written in the file?
Is there any way to retrieve all objects or filter by value name/id..? just
like a database o e4x..
____________________________________
Claudio M. E. Bastos Iorio
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Alex Harui
Sent: Thursday, August 14, 2008 12:20 AM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] Re: writeObject() and readObject()
If you wrote an instance of DocumentFIle, you need to read back an instance
of DocumentFIle
_____
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of slackware2142
Sent: Wednesday, August 13, 2008 5:57 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: writeObject() and readObject()
I forgot to mention that I'm using FLEX3 and my class (DocumentFile)
is already registered:
[RemoteClass(alias="com.DocumentFile")]
public class DocumentFile extends EventDispatcher
{
...
)
____________________________________
Claudio M. E. Bastos Iorio
--- In flexcoders@yahoogroups.com <mailto:flexcoders%40yahoogroups.com> ,
"slackware2142" <[EMAIL PROTECTED]>
wrote:
>
> Hi! I'm trying to create a simple 'file database' in AIR.
> I know I can save and restore objects in AMF format using the
methods
> write/restoreObject.
>
> here is my code to save:
>
> var DocumentToSave:DocumentFile = new DocumentFile
(); //DocumentFile
> is a custom class
> DocumentToSave.Name = 'some name';
> var file:File = File.applicationStorageDirectory.resolvePath
> ('myApp.data');
> var stream:FileStream = new FileStream();
> stream.open(file, FileMode.APPEND);
> stream.writeObject(DocumentToSave);
>
> That code is working and stores the DocumentFile objects and
values.
> But, what can I do to retrieve that objects (or any particular
> object).
>
> I tried this to retrieve:
>
> var file:File = File.applicationStorageDirectory.resolvePath
> ('myApp.data');
> var stream:FileStream = new FileStream();
> stream.open(file, FileMode.READ);
> var arr:Array = new Array();
> while(stream.bytesAvailable){
> //what can I use here to create an array of DocumentFiles stored
> in 'myApp.data'?
> arr = stream.readObject() as Array; //seems to work
> }
>
> trace('new arr length: ' + arr.length);//doesn't work, why??
>
> Any help?
>
> Thanks in advance!
>
>
> ____________________________________
> Claudio M. E. Bastos Iorio
>
