/// <summary>
/// Checks whether the value satisfies constraints.
/// If not, throws an exception.
/// </summary>
/// <param name="value"></param>
protected void CheckValue(object value)
{
if (value == null)
{
return;
}
if (value is string)
{
return;
}
Type type = value.GetType();
if (type.IsArray) // 1d array
{
type = type.GetElementType();
if (!DataSet.IsSupported(type))
{
throw new NotSupportedException("Type " + value.GetType() + " is not supported by metadata dictionary");
}
Array array = (Array)value;
if (array.Rank != 1)
{
throw new NotSupportedException("Metadata supports only 1d-arrays");
}
if (type == typeof(string))
{
if (!Array.TrueForAll((string[])array, p => p != null))
{
throw new NotSupportedException("String array in metadata cannot contain null");
}
}
}
else // scalar
{
if (!DataSet.IsSupported(type))
{
throw new NotSupportedException("Type " + value.GetType() + " is not supported by metadata dictionary");
}
}
}
