/// <summary>
/// Rate - set Multiply Rate from Divide Rate and vice versa
/// </summary>
/// <param name="ctx">context</param>
/// <param name="windowNo">window no</param>
/// <param name="tab">tab</param>
/// <param name="field">field</param>
/// <param name="value">value</param>
/// <returns>null or error message</returns>
public String Rate(Ctx ctx, int windowNo, GridTab tab, GridField field, Object value)
{
if (IsCalloutActive() || value == null) // assuming it is Conversion_Rate
{
return("");
}
SetCalloutActive(true);
Decimal rate1 = (Decimal)value;
Decimal rate2 = Utility.Env.ZERO;
Decimal one = new Decimal(1.0);
if (System.Convert.ToDouble(rate1) != 0.0) // no divide by zero
{
rate2 = Decimal.Round(Decimal.Divide(one, rate1), 12, MidpointRounding.AwayFromZero);
}
//
if (field.GetColumnName().Equals("MultiplyRate"))
{
tab.SetValue("DivideRate", rate2);
}
else
{
tab.SetValue("MultiplyRate", rate2);
}
log.Info(field.GetColumnName() + "=" + rate1 + " => " + rate2);
SetCalloutActive(false);
return("");
}
/// <summary>
/// Start Callout.
/// Callout's are used for cross field validation and setting values in other fields
/// when returning a non empty (error message) string, an exception is raised
/// When invoked, the Tab model has the new value!
/// </summary>
/// <param name="ctx">context</param>
/// <param name="methodName">method name</param>
/// <param name="windowNo">current window number</param>
/// <param name="tab">model Tab</param>
/// <param name="field">modal field</param>
/// <param name="newValue">new value</param>
/// <param name="oldValue">old value</param>
/// <returns>Error message or ""</returns>
public String Start(Ctx ctx, String methodName, int windowNo, GridTab tab,
GridField field, Object newValue, Object oldValue)
{
if (methodName == null || methodName.Length == 0)
{
throw new ArgumentException("No Method Name");
}
//
String retValue = "";
StringBuilder msg = new StringBuilder(methodName).Append(" - ")
.Append(field.GetColumnName())
.Append("=").Append(newValue)
.Append(" (old=").Append(oldValue)
.Append(") {active=").Append(IsCalloutActive()).Append("}");
if (!IsCalloutActive())
{
log.Info(msg.ToString());
}
// Find Method
MethodInfo method = GetMethod(methodName);
if (method == null)
{
throw new ArgumentException("Method not found: " + methodName);
}
int argLength = method.GetParameters().Length;
if (!(argLength == 5 || argLength == 6))
{
throw new ArgumentException("Method " + methodName + " has invalid no of arguments: " + argLength);
}
// Call Method
try
{
Object[] args = null;
if (argLength == 6)
{
args = new Object[] { ctx, windowNo, tab, field, newValue, oldValue }
}
;
else
{
args = new Object[] { ctx, windowNo, tab, field, newValue }
};
retValue = (String)method.Invoke(this, args);
}
catch (Exception e)
{
SetCalloutActive(false);
//Throwable ex = e.getCause(); // InvocationTargetException
//if (ex == null)
// ex = e;
////log.log(Level.SEVERE, "start: " + methodName, ex);
//ex.printStackTrace(System.err);
//retValue = ex.getLocalizedMessage();
retValue = e.Message;
}
return(retValue);
}
