/// <summary>
/// Calls the API that extracts out data from PMS(Created by Delphi)
/// </summary>
/// <returns>call result: True-success; False-failed</returns>
private bool Call()
{
// 1. call private method "LoadApiDll()" to load API dll
DllInvoker invoker = this.LoadApiDll();
if (invoker == null)
{
this.objStringBuilder.Clear();
this.objStringBuilder.Append("Invokes ");
this.objStringBuilder.Append(this.ApiPath);
this.objStringBuilder.Append("failed!(LoadLibrary return null)");
LogHelper.GetLoggerHandle().Error(LogTag, this.Id, this.objStringBuilder.ToString());
return(false);
}
// Notity api to run under debug mode if api implement debug mode
if (ApiAssistor.IsDebugMode(ApiAssistor.StrToDebugLevel(this.ApiDebugLevel)))
{
this.CallApiDebugAPIToLog(invoker);
}
try
{
// 2. call private method "CallApiInitialize()" to Invoke dll's Initialize() function
int custCount = this.CallApiInitialize(invoker);
if (custCount > 0)
{
this.objStringBuilder.Clear();
this.objStringBuilder.Append("Invokes 'Initialize()' successful! The customers count is: ");
this.objStringBuilder.Append(custCount);
LogHelper.GetLoggerHandle().Info(LogTag, this.Id, this.objStringBuilder.ToString());
// 3. call private method "CallApiGetData()" to Invoke dll's "GetData()" function
this.CallApiGetData(invoker);
}
else
{
// if no records returned then output to log
LogHelper.GetLoggerHandle().Info(LogTag, this.Id, "No records returned!");
}
}
finally
{
// 4. call private method "CallApiCleanup()" to Invoke dll's "Cleanup()" function
this.CallApiCleanup(invoker);
}
return(true);
}
/// <summary>
/// Calls the API's DebugAPIToLog() function
/// </summary>
/// <param name="invoker">
/// the handle of dynamic link library
/// </param>
private void CallApiDebugAPIToLog(DllInvoker invoker)
{
var funcDebugApiToLog = (DebugAPIToLog)invoker.Invoke(APIFuncDebugAPIToLog, typeof(DebugAPIToLog));
if (funcDebugApiToLog == null)
{
this.objStringBuilder.Clear();
this.objStringBuilder.Append("Invokes ");
this.objStringBuilder.Append(this.ApiPath);
this.objStringBuilder.Append("failed!(GetProcAddress('DebugAPIToLog') return null)");
LogHelper.GetLoggerHandle().Error(LogTag, this.Id, this.objStringBuilder.ToString());
return;
}
funcDebugApiToLog(ApiAssistor.StrToDebugLevel(this.ApiDebugLevel), this.Version, this.OptionList);
}