/// <summary>
/// Generate a parameter name that is unique to the workflow. Use the argument name if possible, otherwise append a number.
/// </summary>
private static string GeneratetUniqueNameForExpressionParameter(Workflow wf, WfActivity activity, ActivityArgument argument)
{
if (argument.Name == null)
{
throw new ArgumentException("Argument missing name");
}
var composedName = activity.Is <Workflow>()
? argument.Name
: string.Format("{0}_{1}", (activity.Name ?? string.Empty), argument.Name);
if (!wf.ExpressionParameters.Any(expPar => expPar.Name == composedName))
{
return(composedName);
}
var count = 0;
string proposedName;
do
{
count++;
proposedName = String.Format("{0}{1}", composedName, count);
}while (wf.ExpressionParameters.Any(expPar => expPar.Name == proposedName));
return(proposedName);
}
public static void AddExpressionToMapArguments(Workflow wf, WfActivity fromActivity, WfActivity toActivity, string fromArgumentName, string toArgumentName)
{
ActivityArgument fromArgument;
if (fromActivity.Is <Workflow>())
{
fromArgument = fromActivity.GetInputArgument(fromArgumentName);
}
else
{
fromArgument = fromActivity.GetOutputArgument(fromArgumentName);
}
if (fromArgument == null)
{
throw new ArgumentException(String.Format("Unable to find argument on the from Activity: [{0}].[{1}]", fromActivity.Name, fromArgumentName));
}
var subString = CreateArgumentInstance(wf, fromActivity, fromArgument);
AddExpressionToActivityArgument(wf, toActivity, toArgumentName, String.Format("[{0}]", subString), false);
}