Jaoa,
That's exactly what I'm doing. I have two assemblers: The first
gathers client basic data using fill() and returns a collection of
ClientVOs:
/* from ClientDAO */
while (rs.next())
{
client = new ClientVO();
client.setClientId(rs.getInt("id"));
client.setName(rs.getString("name"));
client.setContact(rs.getString("contact"));
client.setIndustry(fetchIndustryVO(rs.getInt("industry")));
client.setInfo(new ClientInfoVO(client.getClientId()));
list.add(client);
}
/* ClientVO */
public class ClientVO {
public int clientId;
public String name;
public ClientInfoVO info;
// getter and setter methods follow...
/* ClientInfoAssembler */
Connection c = null;
ClientInfoVO info = null;
try
{
c = ConnectionHelper.getConnection();
PreparedStatement ps = c.prepareStatement
("select * from client_geninfo where clientID = ? limit 1");
ps.setInt(1, id);
ResultSet rs = ps.executeQuery();
if (rs.next()) {
info.setInfoId(rs.getInt("clientID"));
info.setAddress(rs.getString("address"));
} else {
throw new MessageException("Error fetching client info from
client_geninfo using " + String.valueOf(id));
}
}
/* ClientInfoVO */
public class ClientInfoVO {
private int infoId;
private String address;
These are the server side classes, and in Flex I have matching AS VOs.
Since var info:ClientInfoVO is nested under ClientVO, I figured
binding to model.client.info.address would be enough, but all I get is:
[RPC Fault faultString="Page request made for item with id =
'{infoId=1}'. The item was not in the cache and the adapter's get
method failed to return the item for destination = iad.info that is
expected to be in the requested page." faultCode="Server.Processing"
faultDetail="null"]
Thanks for all your help,
Brennan
--- In [email protected], João Fernandes <[EMAIL PROTECTED]>
wrote:
>
>
> Brennan,
>
> What you must to to have it working:
>
> in your client Assembler your fill method must be something like this:
> get your clients query.
> Loop at it and create an instance of clientServerSideVO for each
record and populate it with your query.
> For each instance set the info property as a new instance of
clienteInfoServerSideVO
> and populate it with the correspondant ID (don't need to load the rest).
>
> If you use bindings at the client side, something like
{myselectedClient.info.address}, when you set myselectedClient a
getItem will be called at the ClientInfo destination and this one
should populate your clientInfo with the needed data.
>
> João Fernandes
>
>
> -----Original Message-----
> From: [email protected] on behalf of dreuimar
> Sent: Wed 26-Jul-06 10:09 PM
> To: [email protected]
> Subject: [flexcoders] Update with one-to-one lazy DataServices
>
>
> When my applications selected client changes, and the 'info' property,
> which is a managed class, goes to fill in data, I'm now getting an RPC
> fault event:
> [RPC Fault faultString="Unable to invoke a get operation on
> destination 'iad.info' due to the following error: null."
> faultCode="Server.Processing" faultDetail="null"]
>
> I know it's accessing my InfoAssembler, because I have SQLExceptions
> caught, and if a client without any detailed information (this
> information is what fills the info class) returns no result set, it's
> throwing a MessageException.
>
> I'm guessing that I need to somehow set up an ItemResponder (see:
>
http://livedocs.macromedia.com/flex/2/docs/wwhelp/wwhimpl/common/html/wwhelp.htm?context=LiveDocs_Parts&file=00001207.html)
> with an addResponder to populate the form fields when the server
> returns a value, but I can't seem to get this working correctly. Even
> if I have try/catches in the ActionScript and follow the guidelines of
> that example, Flash 9 Debugger is still giving me errors...
>
> Any suggestions?
>
> Thanks,
> Brennan
>
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