private FunctionReference(string name, SimpleReference argument, bool isAggregate, string alias, params object[] additionalArguments) : base(alias)
{
_name = name;
_argument = argument;
_isAggregate = isAggregate;
_additionalArguments = additionalArguments;
}
private FunctionReference(string name, SimpleReference argument, bool isAggregate, string alias)
{
_name = name;
_argument = argument;
_isAggregate = isAggregate;
_alias = alias;
}
internal FunctionReference(string name, SimpleReference argument, params object[] additionalArguments)
{
_name = name;
_argument = argument;
_additionalArguments = additionalArguments;
_isAggregate = AggregateFunctionNames.Contains(name.ToLowerInvariant());
}
public static bool TryCreate(string name, SimpleReference argument, out object functionReference)
{
if (!KnownFunctionNames.Contains(name.ToLowerInvariant()))
{
functionReference = null;
return false;
}
functionReference = new FunctionReference(name, argument);
return true;
}
public static bool TryCreate(string name, SimpleReference argument, out object functionReference)
{
if (!KnownFunctionNames.Contains(name.ToLowerInvariant()))
{
functionReference = null;
return(false);
}
functionReference = new FunctionReference(name, argument);
return(true);
}
public string FormatColumnClause(SimpleReference reference)
{
var formatted = TryFormatAsObjectReference(reference as ObjectReference)
??
TryFormatAsFunctionReference(reference as FunctionReference)
??
TryFormatAsMathReference(reference as MathReference);
if (formatted != null) return formatted;
throw new InvalidOperationException("SimpleReference type not supported.");
}
internal FunctionReference(string name, SimpleReference argument)
{
_name = name;
_argument = argument;
_isAggregate = AggregateFunctionNames.Contains(name.ToLowerInvariant());
}
public static bool IsNull(this SimpleReference reference)
{
return(ReferenceEquals(reference, null));
}
