///////////////////////
// Constructors
//private HqlField(HqlField field, bool hidden)
//{
// Init(field._type);
// _start = field._start;
// _length = field._length;
// _name = field._name;
// _dec = field._dec;
// _func = field._func;
// _scalar = field._scalar;
// _direction = field._direction;
// _tableReference = field._tableReference;
// _fieldRename = field._fieldRename;
//}
public HqlField(HqlFieldType type) // for STAR
{
if (type != HqlFieldType.STAR && type != HqlFieldType.ROWNUM && type != HqlFieldType.NULL && type != HqlFieldType.FILENAME)
{
throw new Exception("Instance is for STAR only");
}
Init(type);
}
public HqlField(HqlFieldType type, decimal decimalvalue) // for LITERAL_FLOAT
{
if (type != HqlFieldType.LITERAL_FLOAT)
{
throw new Exception("Instance is for FLOAT only");
}
Init(type);
_dec = decimalvalue;
}
public HqlField(HqlFieldType type, Int64 IntValue) // for INTVALUE, decimal
{
if (type != HqlFieldType.LITERAL_INT)
{
throw new Exception("Instance is for IntValue only");
}
Init(type);
_start = IntValue;
}
public HqlField(HqlFieldType type, int fieldNum) // for FIELDNUM, decimal
{
if (type != HqlFieldType.FIELDNUM)
{
throw new Exception("Instance is for FIELDNUM only");
}
Init(type);
_start = fieldNum;
}
public HqlField(HqlFieldType type, HqlScalar scalar) // for SCALAR
{
if (type != HqlFieldType.SCALAR)
{
throw new Exception("Instance is for SCALAR only");
}
Init(type);
_scalar = scalar;
}
public HqlField(HqlFieldType type, HqlFunction func) // for FUNCTION
{
if (type != HqlFieldType.FUNCTION)
{
throw new Exception("Instance is for FUNCTION only");
}
Init(type);
_func = func;
}
public HqlField(HqlFieldType type, string literal) // for LITERAL
{
if (type != HqlFieldType.LITERAL_STRING)
{
throw new Exception("Instance is for LITERAL only");
}
Init(type);
_name = literal;
}
private void Init(HqlFieldType type)
{
_type = type;
_direction = HqlKeyword.ASCENDING;
_tableReference = String.Empty;
_fieldRename = null;
_start = -1;
_length = -1;
_printResult = true;
}
public HqlField(HqlFieldType type, int start, int length, string name) // for FIXEDWIDTH
{
if (type != HqlFieldType.FIXEDWIDTH)
{
throw new Exception("Instance is for FIXEDWIDTH only");
}
Init(type);
_start = start;
_length = length;
_name = name;
}
