学步园

 

9月14日

Connecting to Documentum using .Net

I've spoke in an earlier post about working with Documentum in .Net. In this post, I'll show you how to connect to a DocBase, and get the list of cabinets.

 

The following code will connect to a DocBase. It assumes that you have a Username, Password and DocBase variables declared that contain valid information:

 

// Get a client object

DfClientX _clientx = new DfClientX();
IDfClient _client = _clientx.getLocalClient();

if (_client == null)
    throw new Exception("Failed creating Documentum client");

// Retrieve the client's version
Console.WriteLine("Using DFC version '{0}'", _clientx.getDFCVersion());

// Create an object with the credentials of the user
IDfLoginInfo _loginInfoObj = _clientx.getLoginInfo();
_loginInfoObj.setUser(Username);
_loginInfoObj.setPassword(Password);

// Create a new session to the requested DocBase
IDfSession _session = _client.newSession(DocBase, _loginInfoObj);

if (_session == null || !_session.isConnected())
{
    Console.WriteLine("Failed conecting to Documentum");
    if (_session != null)
    {
        Console.WriteLine("DFC Messages:\r\n{0}", _session.getMessage(1));
    }
    return;
}

Console.WriteLine("Using server version '{0}'", _session.getServerVersion());

Now, once we're connected to the Documentum DocBase, we'll list all the cabinets:

 

IDfQuery query = _clientx.getQuery();
// Quering the "dm_cabinet" table returns only items of dm_cabinet type
query.setDQL(

"SELECT r_object_id, object_name, title FROM dm_cabinet");

// Query the session for the cabinets
IDfCollection col = query.execute(_session, (int)DFCLib.tagDfQueryTypes.IDfQuery_DF_READ_QUERY);

// Loop through all the items in the collection
while (col.next())
{
    // Get the current item from the collection
    IDfTypedObject typedObj = col.getTypedObject();
    // Print the item's name
    Console.WriteLine("Cabinet name: {0}", typedObj.getString("object_name"))
}
col.Close();

One of the most important thing to remember, is that you have to close the IDfCollection. Each session has a very limited number of collections it can have open at the same time. If you need more collections, I would suggest just caching the items inside a .Net collection for later use.