internal override object Eval(DataRow row, DataRowVersion version)
{
if ((this.column == null) || (this.relation == null))
{
throw ExprException.ExpressionUnbound(this.ToString());
}
DataRow parentRow = row.GetParentRow(this.relation, version);
if (parentRow == null)
{
return(DBNull.Value);
}
return(parentRow[this.column, parentRow.HasVersion(version) ? version : DataRowVersion.Current]);
}
internal override void Bind(DataTable table, List <DataColumn> list)
{
BindTable(table);
Check();
// special case for the Convert function bind only the first argument:
// the second argument should be a Type stored as a name node, replace it with constant.
if (s_funcs[_info]._id == FunctionId.Convert)
{
if (_argumentCount != 2)
{
throw ExprException.FunctionArgumentCount(_name);
}
_arguments ![0].Bind(table, list);
/// <summary>
/// Parses given name and checks it validity
/// </summary>
internal static string ParseName(char[] text, int start, int pos)
{
char esc = '\0';
string charsToEscape = string.Empty;
int saveStart = start;
int savePos = pos;
if (text[start] == '`')
{
start = checked ((start + 1));
pos = checked ((pos - 1));
esc = '\\';
charsToEscape = "`";
}
else if (text[start] == '[')
{
start = checked ((start + 1));
pos = checked ((pos - 1));
esc = '\\';
charsToEscape = "]\\";
}
if (esc != '\0')
{
// scan the name in search for the ESC
int posEcho = start;
for (int i = start; i < pos; i++)
{
if (text[i] == esc)
{
if (i + 1 < pos && charsToEscape.Contains(text[i + 1]))
{
i++;
}
}
text[posEcho] = text[i];
posEcho++;
}
pos = posEcho;
}
if (pos == start)
{
throw ExprException.InvalidName(new string(text, saveStart, savePos - saveStart));
}
return(new string(text, start, pos - start));
}
internal override void Bind(DataTable table, List <DataColumn> list)
{
BindTable(table);
if (table == null)
{
throw ExprException.UnboundName(_name);
}
try
{
_column = table.Columns[_name];
}
catch (Exception e)
{
_found = false;
if (!Common.ADP.IsCatchableExceptionType(e))
{
throw;
}
throw ExprException.UnboundName(_name);
}
if (_column == null)
{
throw ExprException.UnboundName(_name);
}
_name = _column.ColumnName;
_found = true;
// add column to the dependency list, do not add duplicate columns
Debug.Assert(_column != null, "Failed to bind column " + _name);
int i;
for (i = 0; i < list.Count; i++)
{
// walk the list, check if the current column already on the list
DataColumn dataColumn = list[i];
if (_column == dataColumn)
{
break;
}
}
if (i >= list.Count)
{
list.Add(_column);
}
}
internal AggregateNode(FunctionId aggregateType, string columnName, bool local, string relationName)
{
Debug.Assert(columnName != null, "Invalid parameter columnName (null).");
#if DEBUG
if (CompModSwitches.AggregateNode.TraceVerbose)
{
Debug.WriteLine("Creating the aggregate node");
}
#endif
this.aggregate = (Aggregate)(int)aggregateType;
if (aggregateType == FunctionId.Sum)
{
this.type = AggregateType.Sum;
}
else if (aggregateType == FunctionId.Avg)
{
this.type = AggregateType.Mean;
}
else if (aggregateType == FunctionId.Min)
{
this.type = AggregateType.Min;
}
else if (aggregateType == FunctionId.Max)
{
this.type = AggregateType.Max;
}
else if (aggregateType == FunctionId.Count)
{
this.type = AggregateType.Count;
}
else if (aggregateType == FunctionId.Var)
{
this.type = AggregateType.Var;
}
else if (aggregateType == FunctionId.StDev)
{
this.type = AggregateType.StDev;
}
else
{
throw ExprException.UndefinedFunction(Function.FunctionName[(Int32)aggregateType]);
}
this.local = local;
this.relationName = relationName;
this.columnName = columnName;
}
private ExpressionNode ParseAggregateArgument(FunctionId aggregate)
{
string str;
string str2;
bool flag;
this.Scan();
try
{
if (this.token != Tokens.Child)
{
if (this.token != Tokens.Name)
{
throw ExprException.AggregateArgument();
}
str = NameNode.ParseName(this.text, this.start, this.pos);
this.ScanToken(Tokens.RightParen);
return(new AggregateNode(this._table, aggregate, str));
}
flag = this.token == Tokens.Child;
this.prevOperand = 1;
this.Scan();
if (this.token == Tokens.LeftParen)
{
this.ScanToken(Tokens.Name);
str2 = NameNode.ParseName(this.text, this.start, this.pos);
this.ScanToken(Tokens.RightParen);
this.ScanToken(Tokens.Dot);
}
else
{
str2 = null;
this.CheckToken(Tokens.Dot);
}
this.ScanToken(Tokens.Name);
str = NameNode.ParseName(this.text, this.start, this.pos);
this.ScanToken(Tokens.RightParen);
}
catch (Exception exception)
{
if (!ADP.IsCatchableExceptionType(exception))
{
throw;
}
throw ExprException.AggregateArgument();
}
return(new AggregateNode(this._table, aggregate, str, !flag, str2));
}
internal override object Eval(DataRow row, DataRowVersion version)
{
if (!this.found)
{
throw ExprException.UnboundName(this.name);
}
if (row != null)
{
return(this.column[row.GetRecordFromVersion(version)]);
}
if (!this.IsTableConstant())
{
throw ExprException.UnboundName(this.name);
}
return(this.column.DataExpression.Evaluate());
}
internal override object Eval(DataRow row, DataRowVersion version)
{
if (_column == null || _relation == null)
{
throw ExprException.ExpressionUnbound(ToString());
}
DataRow parent = row.GetParentRow(_relation, version);
if (parent == null)
{
return(DBNull.Value);
}
return(parent[_column, parent.HasVersion(version) ? version : DataRowVersion.Current]);
}
internal virtual void Check()
{
#if DEBUG
if (CompModSwitches.FunctionNode.TraceVerbose)
{
Debug.WriteLine("Check function: " + this.name);
}
#endif
Function f = funcs[info];
#if DEBUG
if (CompModSwitches.FunctionNode.TraceVerbose)
{
Debug.WriteLine("id = " + ((int)f.id).ToString());
}
if (CompModSwitches.FunctionNode.TraceVerbose)
{
Debug.WriteLine(", arguments = " + this.argumentCount.ToString());
}
#endif
if (this.info < 0)
{
throw ExprException.UndefinedFunction(this.name);
}
if (funcs[info].IsVariantArgumentList)
{
// for finctions with variabls argument list argumentCount is a minimal number of arguments
if (argumentCount < funcs[info].argumentCount)
{
// Special case for the IN operator
if (funcs[this.info].id == FunctionId.In)
{
throw ExprException.InWithoutList();
}
throw ExprException.FunctionArgumentCount(this.name);
}
}
else
{
if (argumentCount != funcs[info].argumentCount)
{
throw ExprException.FunctionArgumentCount(this.name);
}
}
}
internal override object Eval(DataRow row, DataRowVersion version)
{
object[] argumentValues = new object[this.argumentCount];
if (funcs[this.info].id == FunctionId.Convert)
{
if (this.argumentCount != 2)
{
throw ExprException.FunctionArgumentCount(this.name);
}
argumentValues[0] = this.arguments[0].Eval(row, version);
argumentValues[1] = this.GetDataType(this.arguments[1]);
}
else if (funcs[this.info].id != FunctionId.Iif)
{
for (int i = 0; i < this.argumentCount; i++)
{
argumentValues[i] = this.arguments[i].Eval(row, version);
if (funcs[this.info].IsValidateArguments)
{
if ((argumentValues[i] == DBNull.Value) || (typeof(object) == funcs[this.info].parameters[i]))
{
return(DBNull.Value);
}
if (argumentValues[i].GetType() != funcs[this.info].parameters[i])
{
if ((funcs[this.info].parameters[i] == typeof(int)) && ExpressionNode.IsInteger(DataStorage.GetStorageType(argumentValues[i].GetType())))
{
argumentValues[i] = Convert.ToInt32(argumentValues[i], base.FormatProvider);
}
else
{
if (((funcs[this.info].id != FunctionId.Trim) && (funcs[this.info].id != FunctionId.Substring)) && (funcs[this.info].id != FunctionId.Len))
{
throw ExprException.ArgumentType(funcs[this.info].name, i + 1, funcs[this.info].parameters[i]);
}
if ((typeof(string) != argumentValues[i].GetType()) && (typeof(SqlString) != argumentValues[i].GetType()))
{
throw ExprException.ArgumentType(funcs[this.info].name, i + 1, funcs[this.info].parameters[i]);
}
}
}
}
}
}
return(this.EvalFunction(funcs[this.info].id, argumentValues, row, version));
}
internal FunctionNode(DataTable table, string name) : base(table)
{
_name = name;
for (int i = 0; i < s_funcs.Length; i++)
{
if (string.Equals(s_funcs[i]._name, name, StringComparison.OrdinalIgnoreCase))
{
// we found the reserved word..
_info = i;
break;
}
}
if (_info < 0)
{
throw ExprException.UndefinedFunction(_name);
}
}
internal FunctionNode(DataTable table, string name) : base(table)
{
this.name = name;
for (int i = 0; i < funcs.Length; i++)
{
if (String.Compare(funcs[i].name, name, StringComparison.OrdinalIgnoreCase) == 0)
{
// we found the reserved word..
this.info = i;
break;
}
}
if (this.info < 0)
{
throw ExprException.UndefinedFunction(this.name);
}
}
// Helper for the DataTable.Compute method
internal override object Eval(int[] records)
{
#if DEBUG
if (CompModSwitches.AggregateNode.TraceVerbose)
{
Debug.WriteLine("Eval " + this.ToString());
}
#endif
if (table == null)
{
throw ExprException.AggregateUnbound(this.ToString());
}
if (!local)
{
throw ExprException.ComputeNotAggregate(this.ToString());
}
return(column.GetAggregateValue(records, type));
}
internal void AddArgument(ExpressionNode argument)
{
if (!funcs[this.info].IsVariantArgumentList && (this.argumentCount >= funcs[this.info].argumentCount))
{
throw ExprException.FunctionArgumentCount(this.name);
}
if (this.arguments == null)
{
this.arguments = new ExpressionNode[1];
}
else if (this.argumentCount == this.arguments.Length)
{
ExpressionNode[] destinationArray = new ExpressionNode[this.argumentCount * 2];
Array.Copy(this.arguments, 0, destinationArray, 0, this.argumentCount);
this.arguments = destinationArray;
}
this.arguments[this.argumentCount++] = argument;
}
private void ScanDate()
{
char[] text = this.text;
do
{
this.pos++;
}while ((this.pos < text.Length) && (text[this.pos] != '#'));
if ((this.pos >= text.Length) || (text[this.pos] != '#'))
{
if (this.pos >= text.Length)
{
throw ExprException.InvalidDate(new string(text, this.start, (this.pos - 1) - this.start));
}
throw ExprException.InvalidDate(new string(text, this.start, this.pos - this.start));
}
this.token = Tokens.Date;
this.pos++;
}
private void ScanName(char chEnd, char esc, string charsToEscape)
{
char[] text = this.text;
do
{
if (((text[this.pos] == esc) && ((this.pos + 1) < text.Length)) && (charsToEscape.IndexOf(text[this.pos + 1]) >= 0))
{
this.pos++;
}
this.pos++;
}while ((this.pos < text.Length) && (text[this.pos] != chEnd));
if (this.pos >= text.Length)
{
throw ExprException.InvalidNameBracketing(new string(text, this.start, (this.pos - 1) - this.start));
}
this.pos++;
this.token = Tokens.Name;
}
internal override ExpressionNode Optimize()
{
for (int i = 0; i < this.argumentCount; i++)
{
this.arguments[i] = this.arguments[i].Optimize();
}
if (funcs[this.info].id == FunctionId.In)
{
if (!this.IsConstant())
{
throw ExprException.NonConstantArgument();
}
}
else if (this.IsConstant())
{
return(new ConstNode(base.table, System.Data.ValueType.Object, this.Eval(), false));
}
return(this);
}
internal void AddArgument(ExpressionNode argument)
{
if (!funcs[info].IsVariantArgumentList && argumentCount >= funcs[info].argumentCount)
{
throw ExprException.FunctionArgumentCount(this.name);
}
if (arguments == null)
{
arguments = new ExpressionNode[initialCapacity];
}
else if (argumentCount == arguments.Length)
{
ExpressionNode[] bigger = new ExpressionNode[argumentCount * 2];
System.Array.Copy(arguments, 0, bigger, 0, argumentCount);
arguments = bigger;
}
arguments[argumentCount++] = argument;
}
internal override ExpressionNode Optimize()
{
for (int i = 0; i < this.argumentCount; i++)
{
this.arguments[i] = this.arguments[i].Optimize();
}
Debug.Assert(this.info > 0, "Optimizing unbound function ");
if (funcs[this.info].id == FunctionId.In)
{
// we can not optimize the in node, just check that it has all constant arguments
// CONSIDER : can not find better place for this.. check that the IN arguments are all constants
if (!this.IsConstant())
{
throw ExprException.NonConstantArgument();
}
}
else
{
if (this.IsConstant())
{
#if DEBUG
if (CompModSwitches.FunctionNode.TraceVerbose)
{
Debug.WriteLine("CONSTANT function node " + this.ToString());
}
#endif
return(new ConstNode(ValueType.Object, this.Eval(), false));
}
#if DEBUG
else
{
if (CompModSwitches.FunctionNode.TraceVerbose)
{
Debug.WriteLine("Can not optimize the function call");
}
}
#endif
}
return(this);
}
internal void AddArgument(ExpressionNode argument)
{
if (!s_funcs[_info]._isVariantArgumentList && _argumentCount >= s_funcs[_info]._argumentCount)
{
throw ExprException.FunctionArgumentCount(_name);
}
if (_arguments == null)
{
_arguments = new ExpressionNode[initialCapacity];
}
else if (_argumentCount == _arguments.Length)
{
ExpressionNode[] bigger = new ExpressionNode[_argumentCount * 2];
Array.Copy(_arguments, bigger, _argumentCount);
_arguments = bigger;
}
_arguments[_argumentCount++] = argument;
}
internal override void Bind(DataTable table, List <DataColumn> list)
{
base.BindTable(table);
if (table == null)
{
throw ExprException.UnboundName(this.name);
}
try
{
this.column = table.Columns[this.name];
}
catch (Exception exception)
{
this.found = false;
if (!ADP.IsCatchableExceptionType(exception))
{
throw;
}
throw ExprException.UnboundName(this.name);
}
if (this.column == null)
{
throw ExprException.UnboundName(this.name);
}
this.name = this.column.ColumnName;
this.found = true;
int num = 0;
while (num < list.Count)
{
DataColumn column = list[num];
if (this.column == column)
{
break;
}
num++;
}
if (num >= list.Count)
{
list.Add(this.column);
}
}
internal AggregateNode(DataTable?table, FunctionId aggregateType, string columnName, bool local, string?relationName) : base(table)
{
Debug.Assert(columnName != null, "Invalid parameter column name (null).");
_aggregate = (Aggregate)(int)aggregateType;
if (aggregateType == FunctionId.Sum)
{
_type = AggregateType.Sum;
}
else if (aggregateType == FunctionId.Avg)
{
_type = AggregateType.Mean;
}
else if (aggregateType == FunctionId.Min)
{
_type = AggregateType.Min;
}
else if (aggregateType == FunctionId.Max)
{
_type = AggregateType.Max;
}
else if (aggregateType == FunctionId.Count)
{
_type = AggregateType.Count;
}
else if (aggregateType == FunctionId.Var)
{
_type = AggregateType.Var;
}
else if (aggregateType == FunctionId.StDev)
{
_type = AggregateType.StDev;
}
else
{
throw ExprException.UndefinedFunction(Function.s_functionName[(int)aggregateType]);
}
_local = local;
_relationName = relationName;
_columnName = columnName;
}
private bool AcceptRecord(int record)
{
DataRow row = table.recordManager[record];
if (row == null)
{
return(true);
}
//
DataRowVersion version = DataRowVersion.Default;
if (row.oldRecord == record)
{
version = DataRowVersion.Original;
}
else if (row.newRecord == record)
{
version = DataRowVersion.Current;
}
else if (row.tempRecord == record)
{
version = DataRowVersion.Proposed;
}
object val = this.linearExpression.Eval(row, version);
bool result;
try {
result = DataExpression.ToBoolean(val);
}
catch (Exception e) {
//
if (!ADP.IsCatchableExceptionType(e))
{
throw;
}
throw ExprException.FilterConvertion(this.rowFilter.Expression);
}
return(result);
}
internal override object Eval(DataRow?row, DataRowVersion version)
{
if (!_found)
{
throw ExprException.UnboundName(_name);
}
if (row == null)
{
if (IsTableConstant()) // this column is TableConstant Aggregate Function
{
return(_column !.DataExpression !.Evaluate());
}
else
{
throw ExprException.UnboundName(_name);
}
}
return(_column ![row.GetRecordFromVersion(version)]);
internal static string ParseName(char[] text, int start, int pos)
{
char ch = '\0';
string str = "";
int startIndex = start;
int num4 = pos;
if (text[start] == '`')
{
start++;
pos--;
ch = '\\';
str = "`";
}
else if (text[start] == '[')
{
start++;
pos--;
ch = '\\';
str = @"]\";
}
if (ch != '\0')
{
int index = start;
for (int i = start; i < pos; i++)
{
if (((text[i] == ch) && ((i + 1) < pos)) && (str.IndexOf(text[i + 1]) >= 0))
{
i++;
}
text[index] = text[i];
index++;
}
pos = index;
}
if (pos == start)
{
throw ExprException.InvalidName(new string(text, startIndex, num4 - startIndex));
}
return(new string(text, start, pos - start));
}
internal object Evaluate(DataRow row, DataRowVersion version)
{
object result;
if (!bound)
{
this.Bind(this.table);
}
if (expr != null)
{
result = expr.Eval(row, version);
// if the type is a SqlType (StorageType.Uri < _storageType), convert DBNull values.
if (result != DBNull.Value || StorageType.Uri < _storageType)
{
// we need to convert the return value to the column.Type;
try {
if (StorageType.Object != _storageType)
{
result = SqlConvert.ChangeType2(result, _storageType, _dataType, table.FormatProvider);
}
}
catch (Exception e) {
//
if (!ADP.IsCatchableExceptionType(e))
{
throw;
}
ExceptionBuilder.TraceExceptionForCapture(e);
//
throw ExprException.DatavalueConvertion(result, _dataType, e);
}
}
}
else
{
result = null;
}
return(result);
}
private void ScanString(char escape)
{
char[] text = this.text;
while (this.pos < text.Length)
{
char ch = text[this.pos++];
if (((ch == escape) && (this.pos < text.Length)) && (text[this.pos] == escape))
{
this.pos++;
}
else if (ch == escape)
{
break;
}
}
if (this.pos >= text.Length)
{
throw ExprException.InvalidString(new string(text, this.start, (this.pos - 1) - this.start));
}
this.token = Tokens.StringConst;
}
/// <include file='doc\DataFilter.uex' path='docs/doc[@for="DataFilter.Invoke2"]/*' />
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public virtual bool Invoke(DataRow row, DataRowVersion version)
{
if (expr == null)
{
return(true);
}
if (row == null)
{
throw ExprException.InvokeArgument();
}
object val = expr.Eval(row, version);
bool result;
try {
result = ToBoolean(val);
}
catch (Exception) {
throw ExprException.FilterConvertion(Expression);
}
return(result);
}
internal override object Eval(DataRow row, DataRowVersion version)
{
#if DEBUG
if (CompModSwitches.LookupNode.TraceVerbose)
{
Debug.WriteLine("Eval " + this.ToString());
}
#endif
if (table == null || column == null || relation == null)
{
throw ExprException.ExpressionUnbound(this.ToString());
}
DataRow parent = row.GetParentRow(relation, version);
if (parent == null)
{
return(DBNull.Value);
}
return(parent[column, parent.HasVersion(version) ? version : DataRowVersion.Current]); // haroona : Bug 76154
}
private bool AcceptRecord(int record)
{
bool flag;
DataRow row = this.table.recordManager[record];
if (row == null)
{
return(true);
}
DataRowVersion original = DataRowVersion.Default;
if (row.oldRecord == record)
{
original = DataRowVersion.Original;
}
else if (row.newRecord == record)
{
original = DataRowVersion.Current;
}
else if (row.tempRecord == record)
{
original = DataRowVersion.Proposed;
}
object obj2 = this.linearExpression.Eval(row, original);
try
{
flag = DataExpression.ToBoolean(obj2);
}
catch (Exception exception)
{
if (!ADP.IsCatchableExceptionType(exception))
{
throw;
}
throw ExprException.FilterConvertion(this.rowFilter.Expression);
}
return(flag);
}
