/// <summary>
/// This method, first introduced in this sample application, looks up a specified node and returns an array of all of it's child nodes.
/// </summary>
/// <param name="parentId">The database GUID of the node to look up and return the child nodes from.</param>
/// <param name="cinegyClient">A valid instance of a CAS proxy client</param>
/// <param name="clientContext">The context to be returned and invalidated</param>
/// <returns>An array of child nodes, belonging to the parent node specifed.</returns>
private static Node[] GetChildren(Guid parentId, CinegyDataAccessServiceClient cinegyClient, ConnectContext clientContext)
{
string errorMsg;
int retCode;
//While CinegyAS node id's are often exchanged as simple .NET Guids, they need to be cast into this
//special NODEID object when actually used with the proxy client methods. This object contains the
//actual GUID as a field.
NODEID id = new NODEID();
id._nodeid_id = parentId;
//When calling the method to GetChildrenNodes, a real instance of the parent node does not need to be
//created - a local copy of NodeBase (from which Node inherits) can be used instead, with the crucial
//ID value allocated. Doing this save a call just to get a real copy of the 'Node' first.
NodeBase parentNode = new NodeBase()
{
_id = id
};
//The first interesting new method of this sample - the call to GetChildrenNode.
//This method requires a reference to the NodeBase (which can be a previously returned instance of a Node, or a local variable of NodeBase),
//which will be used as the parent to query.
//The GET_NODE_REQUEST_TYPE is interesting, since it allows you to filter the results to show all, deleted or not deleted nodes. Not Deleted will
//be the most useful in many cases.
Node[] children = cinegyClient.GetChildrenNodes(clientContext, parentNode, GET_NODE_REQUEST_TYPE.NotDeleted, out retCode, out errorMsg);
if (retCode != 0)
{
Console.WriteLine("Error " + retCode + " while trying to retrieve Children: " + errorMsg);
return(null);
}
return(children);
}
private static Node GetNode(Guid nodeId, CinegyDataAccessServiceClient cinegyClient, ConnectContext clientContext)
{
string errorMsg;
int retCode;
NODEID id = new NODEID();
id._nodeid_id = nodeId;
NodeBase nodeBase = new NodeBase()
{
_id = id
};
Node node = cinegyClient.GetNode(clientContext, nodeBase, GET_NODE_REQUEST_TYPE.NotDeleted, out retCode, out errorMsg);
if (node == null)
{
Console.WriteLine("Error " + retCode + " while trying to retrieve Node: " + errorMsg);
return(null);
}
return(node);
}
