public static SqlLiteralScalarExpression Create(SqlLiteral sqlLiteral)
{
SqlLiteralScalarExpression sqlLiteralScalarExpression;
if (sqlLiteral == SqlBooleanLiteral.True)
{
sqlLiteralScalarExpression = SqlLiteralScalarExpression.SqlTrueLiteralScalarExpression;
}
else if (sqlLiteral == SqlBooleanLiteral.False)
{
sqlLiteralScalarExpression = SqlLiteralScalarExpression.SqlFalseLiteralScalarExpression;
}
else if (sqlLiteral == SqlNullLiteral.Singleton)
{
sqlLiteralScalarExpression = SqlLiteralScalarExpression.SqlNullLiteralScalarExpression;
}
else if (sqlLiteral == SqlUndefinedLiteral.Create())
{
sqlLiteralScalarExpression = SqlLiteralScalarExpression.SqlUndefinedLiteralScalarExpression;
}
else
{
// Either a number or string in which we need to new one up.
sqlLiteralScalarExpression = new SqlLiteralScalarExpression(sqlLiteral);
}
return(sqlLiteralScalarExpression);
}
public static SqlTopSpec Create(SqlNumberLiteral sqlNumberLiteral)
{
if (sqlNumberLiteral == null)
{
throw new ArgumentNullException(nameof(sqlNumberLiteral));
}
long value;
if (!sqlNumberLiteral.Value.IsInteger)
{
throw new ArgumentOutOfRangeException($"Expected {nameof(sqlNumberLiteral)} to be an integer.");
}
value = Number64.ToLong(sqlNumberLiteral.Value);
if ((value < PremadeTopIndex) && (value >= 0))
{
return(SqlTopSpec.PremadeTopSpecs[value]);
}
SqlScalarExpression topExpression = SqlLiteralScalarExpression.Create(
SqlNumberLiteral.Create(
value));
return(new SqlTopSpec(topExpression));
}