public Expression SubStringOfMethod(SubStringOfMethod method, LiteralExpression[] arguments)
{
if (arguments.Length == 1)
{
return(arguments[0]);
}
else
{
bool result;
if (LiteralUtil.IsAnyNull(arguments))
{
result = false;
}
else
{
result = LiteralUtil.CoerceString(arguments[1]).IndexOf(
LiteralUtil.CoerceString(arguments[0]),
StringComparison.InvariantCultureIgnoreCase
) != -1;
}
return(new LiteralExpression(result, LiteralType.Boolean));
}
}
public Expression IndexOfMethod(IndexOfMethod method, LiteralExpression[] arguments)
{
int result;
if (LiteralUtil.IsAnyNull(arguments))
{
result = -1;
}
else
{
result = LiteralUtil.CoerceString(arguments[0]).IndexOf(
LiteralUtil.CoerceString(arguments[1]),
StringComparison.InvariantCultureIgnoreCase
);
}
if (result == -1)
{
return(new LiteralExpression(null, LiteralType.Null));
}
else
{
return(new LiteralExpression(result + 1, LiteralType.Int));
}
}
public Expression LengthMethod(LengthMethod method, LiteralExpression[] arguments)
{
if (LiteralUtil.IsAnyNull(arguments))
{
return(new LiteralExpression(null, LiteralType.Null));
}
else
{
int result = LiteralUtil.CoerceString(arguments[0]).Length;
return(new LiteralExpression(result, LiteralType.Int));
}
}
public Expression TrimMethod(TrimMethod method, LiteralExpression[] arguments)
{
if (LiteralUtil.IsAnyNull(arguments))
{
return(new LiteralExpression(null, LiteralType.Null));
}
else
{
string result = LiteralUtil.CoerceString(arguments[0]).Trim();
return(new LiteralExpression(result, LiteralType.String));
}
}
public Expression ReplaceMethod(ReplaceMethod method, LiteralExpression[] arguments)
{
if (LiteralUtil.IsAnyNull(arguments))
{
return(new LiteralExpression(null, LiteralType.Null));
}
else
{
string result = LiteralUtil.CoerceString(arguments[0]).Replace(
LiteralUtil.CoerceString(arguments[1]),
LiteralUtil.CoerceString(arguments[2])
);
return(new LiteralExpression(result, LiteralType.String));
}
}
public Expression EndsWithMethod(EndsWithMethod method, LiteralExpression[] arguments)
{
bool result;
if (LiteralUtil.IsAnyNull(arguments))
{
result = false;
}
else
{
result = LiteralUtil.CoerceString(arguments[0]).EndsWith(
LiteralUtil.CoerceString(arguments[1]),
StringComparison.InvariantCultureIgnoreCase
);
}
return(new LiteralExpression(result, LiteralType.Boolean));
}
private Expression NormalizeDatePart(DatePartMethod method, LiteralExpression[] arguments)
{
if (LiteralUtil.IsAnyNull(arguments))
{
return(new LiteralExpression(null, LiteralType.Null));
}
else if (arguments[0].LiteralType != LiteralType.DateTime)
{
throw new ODataException(String.Format(
ErrorMessages.Method_InvalidArgumentType,
method.MethodType, 1, "Edm.DateTime"
));
}
else
{
var argument = (DateTime)arguments[0].Value;
int result;
switch (method.MethodType)
{
case MethodType.Year: result = argument.Year; break;
case MethodType.Month: result = argument.Month; break;
case MethodType.Day: result = argument.Day; break;
case MethodType.Hour: result = argument.Hour; break;
case MethodType.Minute: result = argument.Minute; break;
case MethodType.Second: result = argument.Second; break;
default: throw new NotSupportedException();
}
return(new LiteralExpression(result, LiteralType.Int));
}
}
