public virtual void Visiting(SqlNumericLiteral numericLiteral)
{
sqlBuilder.Append(EncapsulateNumeric(FormatNumeric(numericLiteral.DecimalValue)));
}
private SqlExpression EvalDecimalValue(NPathDecimalValue value)
{
SqlNumericLiteral numericLiteral = new SqlNumericLiteral((Decimal)value.Value) ;
return numericLiteral;
// string paramName = GetParameterName();
// IQueryParameter param = new QueryParameter(paramName, DbType.Decimal, value.Value ) ;
// ResultParameters.Add(param);
// SqlParameter sqlParam = select.AddSqlParameter(paramName, DbType.Decimal, value.Value) ;
// return sqlParam ;
}
public virtual void Visited(SqlNumericLiteral numericLiteral)
{
}
private SqlExpression EvalCompareExpression(NPathCompareExpression compareExpression)
{
SqlSearchCondition search ;
if (noNext)
search = conditionChainOwner as SqlSearchCondition ;
else
search = conditionChainOwner.GetNextSqlSearchCondition() ;
noNext = false;
SqlExpression leftExpression = null;
SqlExpression rightExpression = null;
if (compareExpression.RightOperand is NPathIdentifier && !IsEnum(compareExpression.RightOperand) && IsEnum(compareExpression.LeftOperand))
{
//left operand is enum
rightExpression = EvalExpression(compareExpression.RightOperand);
NPathIdentifier propertyPath = (NPathIdentifier)compareExpression.RightOperand;
NPathIdentifier enumIdentifier = (NPathIdentifier)compareExpression.LeftOperand;
Type enumType = GetTypFromPropertyPath(propertyPath);
if (!enumType.IsEnum)
throw new Exception(string.Format("Property '{0}' is not an Enum type",propertyPath.Path));
int enumValue = GetEnumValue(enumType,enumIdentifier.Path);
leftExpression = new SqlNumericLiteral(enumValue);
}
if (compareExpression.LeftOperand is NPathIdentifier && !IsEnum(compareExpression.LeftOperand) && IsEnum(compareExpression.RightOperand))
{
leftExpression = EvalExpression(compareExpression.LeftOperand);
NPathIdentifier propertyPath = (NPathIdentifier)compareExpression.LeftOperand;
NPathIdentifier enumIdentifier = (NPathIdentifier)compareExpression.RightOperand;
Type enumType = GetTypFromPropertyPath(propertyPath);
if (!enumType.IsEnum)
throw new Exception(string.Format("Property '{0}' is not an Enum type",propertyPath.Path));
int enumValue = GetEnumValue(enumType,enumIdentifier.Path);
rightExpression = new SqlNumericLiteral(enumValue);
}
else
{
leftExpression = EvalExpression(compareExpression.LeftOperand);
rightExpression = EvalExpression(compareExpression.RightOperand);
}
SqlPredicate predicate;
if (compareExpression.RightOperand is NPathNullValue)
{
if (compareExpression.Operator == "=")
predicate = search.GetSqlIsNullPredicate(leftExpression);
else if (compareExpression.Operator == "!=") // do not localize
predicate = search.GetSqlIsNullPredicate(leftExpression, true);
else
throw new NPathException("Comparisment operand " + compareExpression.Operator + " can't be used for comparisment with Null value!"); // do not localize
}
else
{
predicate = search.GetSqlComparePredicate(leftExpression, EvalOperator(compareExpression.Operator) ,rightExpression) ;
}
return predicate;
}
