public object GetFunctionValue(HqlRecord record)
{
switch (FieldType)
{
case HqlFieldType.FIELDNUM:
case HqlFieldType.FIXEDWIDTH:
case HqlFieldType.LITERAL_STRING:
case HqlFieldType.STAR:
case HqlFieldType.FUNCTION:
case HqlFieldType.LITERAL_INT:
case HqlFieldType.LITERAL_FLOAT:
return(GetValue(record));
case HqlFieldType.SCALAR:
{
// This works because this function is only called when HasFunction is true.
// If I'm in here and it goes to scalar, it REALLY wants the function value
// this is for the groupby
#if DEBUG
if (Func == null)
{
throw new Exception("Unexpected null function");
}
#endif
//return Func.GetFunctionValue(record);
return(Func.GetValue(record));
}
default:
throw new Exception("Unknown HqlField type");
}
}
///////////////////////
// Private
private bool?EvaluateSingle(HqlRecord record)
{
object v1 = record.GetValue(Token1);
object v2 = record.GetValue(Token2);
return(Evaluate(v1, v2, Compare));
}
public object GetValue(HqlRecord record)
{
switch (FieldType)
{
case HqlFieldType.FIELDNUM:
case HqlFieldType.FIXEDWIDTH:
case HqlFieldType.STAR:
case HqlFieldType.ROWNUM:
case HqlFieldType.FILENAME:
return(record.GetValue(this));
case HqlFieldType.SCALAR:
return(Scalar.Evaluate(record));
case HqlFieldType.FUNCTION:
return(Func.GetValue(record));
case HqlFieldType.LITERAL_STRING:
return(Name);
case HqlFieldType.LITERAL_INT:
return(IntValue);
case HqlFieldType.LITERAL_FLOAT:
return(DecimalValue);
default:
throw new Exception("Unknown HqlField type");
}
}
public new string Evaluate(HqlRecord record)
{
StringBuilder sb = new StringBuilder(_filename);
for (int i = 0; i < _fieldgroup.Count; ++i)
{
string result = _fieldgroup[i].GetValue(record).ToString();
sb.Replace("{" + _fieldgroup[i].FieldRename + "}", result);
}
return(sb.ToString());
}
public bool Evaluate(HqlRecord record)
{
int counter = 0;
if (_q == null || _q.Count == 0)
{
return(true);
}
bool?res = HqlEvaluator.Evaluate(record, _q, ref counter);
return(HqlEvaluator.EvalNullableBool(res, false));
}
/// <summary>
/// Same as GetValues() except it erases the values of the functions
/// because the Key in the array cannot have the value since it constantly changes.
/// I need a place holder in the final answer though due to sorting though
/// </summary>
/// <param name="record"></param>
/// <returns></returns>
public object[] GetKeyValues(HqlRecord record)
{
object[] o = _fieldgroup.GetValues(record);
for (int i = 0; i < _fieldgroup.Count; ++i)
{
if (_fieldgroup[i].HasFunction)
{
o[i] = null;
}
}
return(o);
}
public object[] GetValues(HqlRecord record)
{
if (_fields == null || _fields.Length == 0)
{
return(new object[0]);
}
object[] arr = new object[_fields.Length];
for (int i = 0; i < _fields.Length; ++i)
{
arr[i] = _fields[i].GetValue(record);
}
return(arr);
}
public bool Evaluate(HqlRecord record)
{
switch (_type)
{
case HqlCompareTokenType.SINGLE:
return(HqlEvaluator.EvalNullableBool(EvaluateSingle(record), false));
case HqlCompareTokenType.IN:
return(HqlEvaluator.EvalNullableBool(EvaluateInValues(record), false));
case HqlCompareTokenType.NOT_IN:
bool b = HqlEvaluator.EvalNullableBool(EvaluateInValues(record), false); // TODO, should this be true?
return(!b);
default:
throw new NotSupportedException("Unknown type of COMPARETOKEN");
}
}
public void AddToResultRow(int start, HqlRecord record, HqlResultRow row)
{
for (int i = 0; i < _fieldgroup.Count; ++i)
{
if (_fieldgroup[i].HasFunction)
{
object value = _fieldgroup[i].GetFunctionValue(record);
row[start + i] = value; // this is an overloaded function that "adds" to this function or assigns if the first time
}
else
{
if (!row.ValuesSet)
{
// save these!
object value = _fieldgroup[i].GetValue(record);
row[start + i] = value;
}
}
}
}
private void CreateKeyAndValue(HqlRecord record)
{
HqlKey KEY = null;
object[] keys = CreateRecordKey(record, _orderby, _groupby, _settings.Output, _linenum);
KEY = new HqlKey(keys);
HqlResultRow row = _groupby.FindResultRow(KEY);
if (row == null)
{
row = CreateObjectArrayValue(_orderby, _select, _settings.Output);
}
#if DEBUG
else
{
int stop = 0;
}
#endif
// set the values on the row
int counter = 0;
_orderby.AddToResultRow(counter, record, row);
counter += _orderby.Count;
_select.AddToResultRow(counter, record, row);
counter += _select.Count;
if (_settings.PrintCategorizeFilename)
{
_settings.Output.AddToResultRow(counter, record, row);
//counter += _output.Count;
}
if (!row.ValuesSet)
{
row.ValuesSet = true;
_groupby.SetResultRow(KEY, row);
}
}
///////////////////////
// Static Functions
private static object[] CreateRecordKey(HqlRecord record, HqlOrderBy order, HqlClause group, HqlClause output, int linenum)
{
int orderlength = order.Count;
int grouplength = (group.Count == 0) ? 1: group.Count;
int outputlength = ((output == null) ? 0 : output.Count);
int length = orderlength + grouplength + outputlength;
object[] keys = new object[length];
object[] orderarray = order.GetKeyValues(record);
object[] grouparray;
if (group.Count > 0)
{
grouparray = group.GetValues(record);
}
else
{
grouparray = new object[1] {
linenum
}
};
object[] outputarray = ((output == null) ? null : output.GetValues(record));
int counter = 0;
orderarray.CopyTo(keys, counter);
counter += orderarray.Length;
grouparray.CopyTo(keys, counter);
counter += grouparray.Length;
if (outputarray != null)
{
outputarray.CopyTo(keys, counter);
//counter += outputarray.Length;
}
return(keys);
}
public string Evaluate(HqlRecord record)
{
StringBuilder sb = new StringBuilder();
bool printed = false;
for (int i = 0; i < _fieldgroup.Count; ++i)
{
if (!_fieldgroup[i].PrintResult)
{
continue;
}
object result = _fieldgroup[i].GetValue(record);
if (printed)
{
sb.Append(_settings.OutDelimiter);
}
sb.Append(result.ToString());
printed = true;
}
sb.Append(_settings.FinalDelimiter);
return(sb.ToString());
}
private bool?EvaluateInValues(HqlRecord record)
{
object v1 = record.GetValue(Token1);
for (int i = 0; i < _values.Count; ++i)
{
try
{
HqlToken t = (HqlToken)_values[i];
object v2 = record.GetValue(t);
if (Evaluate(v1, v2, Compare))
{
return(true);
}
}
catch (Exception ex)
{
int stop = 0;
throw;
}
}
return(false);
}
static internal bool?Evaluate(HqlRecord record, ArrayList q, ref int counter)
{
if (counter > q.Count)
{
throw new Exception("Unexpected end of WHERE evaluation");
}
bool?result = null;
for (; ;)
{
if (counter >= q.Count)
{
break;
}
Object o = q[counter];
counter++;
if (o is HqlToken)
{
// open paren := token.Type == HqlWordType.KEYWORD && token.Keyword == HqlKeyword.OPENPAREN
// closed paren := token.Type == HqlWordType.KEYWORD && token.Keyword == HqlKeyword.CLOSEDPAREN
// and_or := token.Type == HqlWordType.KEYWORD && token.Keyword == HqlKeyword.AND_OR
//
HqlToken token = (HqlToken)o;
if (token.WordType == HqlWordType.KEYWORD && token.Keyword == HqlKeyword.OPENPAREN)
{
#if DEBUG
if (result.HasValue)
{
throw new Exception("How did it get a value?");
}
#endif
result = Evaluate(record, q, ref counter);
continue;
}
else if (token.WordType == HqlWordType.KEYWORD && token.Keyword == HqlKeyword.CLOSEDPAREN)
{
return(result);
}
else if (token.WordType == HqlWordType.KEYWORD && token.Keyword == HqlKeyword.OR)
{
bool b2 = MustContainValue(result, "left OR");
bool b1 = MustContainValue(Evaluate(record, q, ref counter), "right OR");
result = b1 || b2;
continue;
}
else if (token.WordType == HqlWordType.KEYWORD && token.Keyword == HqlKeyword.AND)
{
bool b2 = MustContainValue(result, "left AND");
bool b1 = MustContainValue(Evaluate(record, q, ref counter), "right AND");
result = b1 && b2;
continue;
}
else
{
throw new Exception("Unknown type of HqlToken in WHERE clause");
}
}
else if (o is HqlCompareToken)
{
HqlCompareToken c = (HqlCompareToken)o;
#if DEBUG
if (result.HasValue)
{
throw new Exception("How did it get a value?");
}
#endif
result = c.Evaluate(record);
continue;
}
else
{
throw new Exception("Unknown type of object in WHERE evaluation.");
}
}
return(MustContainValue(result, "whole thing"));
}
public HqlValues(HqlFieldGroup fieldsImpacted, HqlRecord record)
{
_fieldsImpacted = fieldsImpacted;
_values1 = _fieldsImpacted.GetValues(record);
}
public object[] GetValues(HqlRecord record)
{
return(_fieldgroup.GetValues(record));
}
//public object GetFunctionValue(HqlRecord record)
//{
// return Field.GetValue(record);
//}
public object GetValue(HqlRecord record)
{
return(Field.GetValue(record));
}
