/// <summary>Given an arg inst and a value create and activityArgument ready for storage.</summary>
/// <param name="activity">The <see cref="WfActivity"/> being run. This cannot be null.</param>
/// <param name="arg">The argument for the activity. This cannot be null.</param>
/// <param name="value">The value of the argument. Its type is determined by <paramref name="arg"/>. This may be null for certain argument types.</param>
/// <returns>The converted value.</returns>
/// <exception cref="ArgumentNullException">Neither <paramref name="activity"/> nor <paramref name="arg"/> can be null.</exception>
/// <exception cref="ArgumentException"><paramref name="arg"/> must be of a supported type.</exception>
public static ActivityArgument ConvertArgInstValue(WfActivity activity, ActivityArgument arg, object value)
{
if (activity == null)
{
throw new ArgumentNullException(nameof(activity));
}
if (arg == null)
{
throw new ArgumentNullException(nameof(arg));
}
ActivityArgument result;
string name = $"{activity.Name ?? "[Unnamed]"}.{arg.Name ?? "[Unnamed]"}";
if (arg.Is <ResourceListArgument>())
{
var list = (IEnumerable <IEntity>)value;
var created = new ResourceListArgument {
Name = name
};
if (list != null)
{
var cleanList = list.Where(e => e != null).Select(e => e.As <Resource>());
created.ResourceListParameterValues.AddRange(cleanList);
}
result = created.As <ActivityArgument>();
}
else if (arg.Is <ResourceArgument>())
{
var res = (IEntity)value;
var created = new ResourceArgument {
Name = name, ResourceParameterValue = res?.As <Resource>()
};
result = created.As <ActivityArgument>();
}
else if (arg.Is <StringArgument>())
{
var created = new StringArgument {
Name = name, StringParameterValue = (string)value
};
result = created.As <ActivityArgument>();
}
else if (arg.Is <BoolArgument>())
{
var created = new BoolArgument {
Name = name, BoolParameterValue = (bool?)value ?? false
};
result = created.As <ActivityArgument>();
}
else if (arg.Is <IntegerArgument>())
{
var created = new IntegerArgument {
Name = name, IntParameterValue = (int?)value ?? 0
};
result = created.As <ActivityArgument>();
}
else if (arg.Is <DecimalArgument>())
{
var created = new DecimalArgument {
Name = name, DecimalParameterValue = (decimal?)value ?? 0
};
result = created.As <ActivityArgument>();
}
else if (arg.Is <CurrencyArgument>())
{
var created = new CurrencyArgument {
Name = name, DecimalParameterValue = (decimal?)value ?? 0
};
result = created.As <ActivityArgument>();
}
else if (arg.Is <DateTimeArgument>())
{
var created = new DateTimeArgument {
Name = name, DateTimeParameterValue = (DateTime?)value
};
result = created.As <ActivityArgument>();
}
else if (arg.Is <DateArgument>())
{
var created = new DateArgument {
Name = name, DateParameterValue = (DateTime?)value
};
result = created.As <ActivityArgument>();
}
else if (arg.Is <TimeArgument>())
{
// ensure that timeparametervalue only ever holds a datetime
var dt = value is TimeSpan?TimeType.NewTime((TimeSpan)value) : (DateTime?)value;
var created = new TimeArgument {
Name = name, TimeParameterValue = dt
};
result = created.As <ActivityArgument>();
}
else if (arg.Is <GuidArgument>())
{
var created = new GuidArgument {
Name = name, GuidParameterValue = (Guid?)value ?? Guid.Empty
};
result = created.As <ActivityArgument>();
}
else
{
throw new ArgumentException($"Unsupported ActivityArgument '{arg.IsOfType.First().Name}' in '{name}'", "arg");
}
return(result);
}
