public void AddExpression(ConditionalExpression expression)
{
if (expression == null)
{
throw new ArgumentNullException("Expression was null.");
}
var resolvedExpr = ResolvedConditionalExpression.CreateFromUnresolved(expression);
if (!resolvedExpr.IsValid())
{
throw new Exception("Expression was not valid.");
}
// Remove all expressions that have the same conditional resource target as the newest one
// We will replace those with what the new rule.
int removed = m_pendingExpressions.RemoveAll(x => x.ConditionalResource.Id == resolvedExpr.ConditionalResource.Id);
for (int i = 0; i < removed; i++)
{
GatewayResourceProxy.Instance.UnregisterOnMessageEvent(resolvedExpr.ConditionalResource.Id, OnMessage);
}
m_pendingExpressions.Add(resolvedExpr);
this.PrepareConditionalObject(resolvedExpr);
}
private void PrepareConditionalObject(ResolvedConditionalExpression expr)
{
// We will be watching changes of this resources' value, so set its mode to push
GatewayResourceProxy.Instance.RegisterOnMessageEvent(expr.ConditionalResource.Id, OnMessage);
GatewayResourceProxy.Instance.SendSetCommunicationModeRequest(expr.ConditionalResource.Id,
CommunicationMode.Push);
}
public static ResolvedConditionalExpression CreateFromUnresolved(ConditionalExpression unresolvedExpr)
{
var resolved = new ResolvedConditionalExpression(unresolvedExpr);
resolved.Resolve();
return(resolved);
}
private void ExecuteExpression(ResolvedConditionalExpression expr, MessageReceivedEventArgs e)
{
expr.Execute(e.Data);
}