/// <summary>
/// Updates the SharedVariable object with data provided from the blackboard due to a subscription
/// </summary>
/// <param name="svReport">The report which contains the information for update</param>
/// <param name="ex">When this method returns contains null if the variable was updated successfully, or the exception to be thrown if the update failed</param>
/// <returns>true if variable was updated successfully, false otherwise</returns>
internal override bool Update(SharedVariableReport svReport, out Exception ex)
{
OnReportReceived(svReport);
if (!IsValidUpdateData(svReport.VariableInfo.TypeName, svReport.VariableInfo.IsArray, svReport.VariableInfo.Length, svReport.VariableInfo.Name, out ex))
{
return(false);
}
T value;
T oldValue = BufferedData;
if (!UpdateValue(svReport.SerializedData, svReport.Writer, out value, out ex))
{
return(false);
}
SharedVariableSubscriptionReport <T> report;
//report = new SharedVariableSubscriptionReport<T>(this, reportType, subscriptionType, writer, value, reportString);
report = new SharedVariableSubscriptionReport <T>(this, svReport.ReportType, svReport.SubscriptionType, svReport.Writer, value);
OnWriteNotification(report);
// Check if value changed
IComparable <T> cValue = value as IComparable <T>;
if ((cValue != null) && (cValue.CompareTo(oldValue) != 0))
{
OnValueChanged(report);
}
else if (!System.Collections.Generic.EqualityComparer <T> .Default.Equals(oldValue, value))
{
OnValueChanged(report);
}
return(true);
}
/// <summary>
/// Raises the WriteNotification event
/// </summary>
/// <param name="report">The SharedVariableSubscriptionReport object which contain the report information</param>
protected virtual void OnWriteNotification(SharedVariableSubscriptionReport <T> report)
{
if (WriteNotification != null)
{
try
{
WriteNotification(report);
}
catch { }
}
}
/// <summary>
/// Raises the ValueChanged event
/// </summary>
/// <param name="report">The SharedVariableSubscriptionReport object which contain the report information</param>
protected virtual void OnValueChanged(SharedVariableSubscriptionReport <T> report)
{
//if ((this.ValueChanged != null) && (report.ReportType != SharedVariableReportType.Notify) && (bufferedData == previousBufferedData))
if ((this.ValueChanged != null) && (report.ReportType != SharedVariableReportType.Notify))
{
try
{
ValueChanged(report);
}
catch { }
}
}