//If another namespace is needed for the pattern lookup it can be written as Namespace__Key, i.e. namespace and key seperated by two underscores '_'
public ParameterValue GetValue(EvaluationContext context)
{
var values = context.Parameters;
string actualPatternKey;
if (PatternKey.StartsWith("@"))
{
var parts = PatternKey.Substring(1).Split('+');
actualPatternKey = (string)values.GetObject(parts[0]);
if (parts.Length > 1)
{
actualPatternKey += parts[1];
}
}
else
{
actualPatternKey = PatternKey;
}
string ns = context.Namespace;
int ix = actualPatternKey.IndexOf(NamespaceQualifier);
if (ix != -1)
{
ns = actualPatternKey.Substring(0, ix);
actualPatternKey = actualPatternKey.Substring(ix + NamespaceQualifier.Length);
}
if (actualPatternKey != null)
{
int i = 0;
var callValues = new DicitionaryParameterSet();
foreach (var p in Parameters)
{
if ((p.Key.StartsWith("\"") || p.Key.StartsWith("'")) && (p.Key.EndsWith("\"") || p.Key.EndsWith("'")))
{
callValues["" + i] = ParameterValue.Wrap(p.Key.Substring(1, p.Key.Length - 2));
}
else
{
ParameterValue v = null;
if (p.Value != null)
{
v = values[p.Key].Clone();
v.DefaultFormat = p.Value;
}
else
{
v = values[p.Key];
}
callValues[p.Key] = v;
callValues["" + i] = v;
}
++i;
}
return(new UnencodedParameterValue(Manager.Get(actualPatternKey, callValues,
ns: ns, language: context.Language, returnNullOnMissing: true)));
}
else
{
//The pattern key was to be looked up and wasn't in the provided values. Return null
return(null);
}
}
