private static Criteria GetCriteriaLeaf(CriteriaExpression criteriaExpression)
{
string propName = criteriaExpression.Left.Expression;
string operatorString = criteriaExpression.Expression;
object value = criteriaExpression.Right.Expression;
Criteria.ComparisonOp comparisonOp = CreateComparisonOperator(operatorString);
if ((comparisonOp == Criteria.ComparisonOp.In || comparisonOp == Criteria.ComparisonOp.NotIn) && value is string)
{
string inValuesString = value.ToString().TrimStart('(').TrimEnd(')');
HabaneroStringBuilder valueStringBuilder = new HabaneroStringBuilder(inValuesString);
valueStringBuilder.RemoveQuotedSections();
List <string> finalStrings = new List <string>();
int commaIndex;
int lastIndex = 0;
commaIndex = valueStringBuilder.IndexOf(",");
while (commaIndex != -1)
{
HabaneroStringBuilder oneValueSubstring = valueStringBuilder.Substring(lastIndex, commaIndex - lastIndex);
finalStrings.Add(oneValueSubstring.PutBackQuotedSections().ToString().Trim());
lastIndex = commaIndex + 1;
commaIndex = valueStringBuilder.IndexOf(",", lastIndex);
}
HabaneroStringBuilder oneValueString = valueStringBuilder.Substring(lastIndex, valueStringBuilder.ToString().Length - lastIndex);
finalStrings.Add(oneValueString.PutBackQuotedSections().ToString().Trim());
value = new Criteria.CriteriaValues(finalStrings);
}
return(new Criteria(propName, comparisonOp, value));
}
private static Criteria GetCriteriaLeaf(CriteriaExpression criteriaExpression)
{
string propName = criteriaExpression.Left.Expression;
string operatorString = criteriaExpression.Expression;
object value = criteriaExpression.Right.Expression;
Criteria.ComparisonOp comparisonOp = CreateComparisonOperator(operatorString);
if ((comparisonOp == Criteria.ComparisonOp.In || comparisonOp == Criteria.ComparisonOp.NotIn) && value is string)
{
string inValuesString = value.ToString().TrimStart('(').TrimEnd(')');
HabaneroStringBuilder valueStringBuilder = new HabaneroStringBuilder(inValuesString);
valueStringBuilder.RemoveQuotedSections();
List<string> finalStrings = new List<string>();
int commaIndex;
int lastIndex = 0;
commaIndex = valueStringBuilder.IndexOf(",");
while (commaIndex != -1) {
HabaneroStringBuilder oneValueSubstring = valueStringBuilder.Substring(lastIndex, commaIndex-lastIndex);
finalStrings.Add(oneValueSubstring.PutBackQuotedSections().ToString().Trim());
lastIndex = commaIndex+1;
commaIndex = valueStringBuilder.IndexOf(",", lastIndex);
}
HabaneroStringBuilder oneValueString = valueStringBuilder.Substring(lastIndex, valueStringBuilder.ToString().Length - lastIndex);
finalStrings.Add(oneValueString.PutBackQuotedSections().ToString().Trim());
value = new Criteria.CriteriaValues(finalStrings);
}
return new Criteria(propName, comparisonOp, value);
}
/// <summary>
/// Parses the expression into a linked list of expression objects
/// </summary>
/// <param name="expression">The expression to parse</param>
private void parseExpression(HabaneroStringBuilder expression)
{
HabaneroStringBuilder quotesRemovedExpression = expression;
//Remove any sections sorounded by opening and closing ' (single quote)
quotesRemovedExpression.RemoveQuotedSections();
//Upper case such that the operator or Or and OR etc are identical.
String expressionWithoutQuotes = quotesRemovedExpression.ToString().ToUpper();
//Check if the first character is an opening bracket if it is then find the closing bracket
// and set this as the left expression.
if (expressionWithoutQuotes.IndexOf("(") == 0)
{
int bracketCount = 1;
int bracketSearchPos = 0;
while ((bracketCount > 0) && (bracketSearchPos < expressionWithoutQuotes.Length - 1))
{
bracketSearchPos++;
switch (expressionWithoutQuotes[bracketSearchPos])
{
case '(':
bracketCount++;
break;
case ')':
bracketCount--;
break;
}
}
if (bracketSearchPos == expressionWithoutQuotes.Length - 1)
{
parseExpression(
quotesRemovedExpression.Substring(1, expressionWithoutQuotes.Length - 2).PutBackQuotedSections());
return;
}
_left = new CriteriaExpression(quotesRemovedExpression.Substring(1, bracketSearchPos - 1)
.PutBackQuotedSections().ToString().Trim(), _operators);
int pos = -1;
string foundOperator = "";
foreach (String op in _operators)
{
int thisPos = expressionWithoutQuotes.IndexOf(op, bracketSearchPos);
if ((thisPos == -1 || thisPos >= pos) && pos != -1)
{
continue;
}
pos = thisPos;
foundOperator = op;
}
if (pos != -1)
{
_right = new CriteriaExpression(quotesRemovedExpression.Substring(pos + foundOperator.Length)
.PutBackQuotedSections().ToString().Trim(), _operators);
_expression = foundOperator;
}
}
else
{
foreach (String op in _operators)
{
int pos = expressionWithoutQuotes.IndexOf(op);
if (pos == -1 || IsPosInsideBrackets(expressionWithoutQuotes, pos))
{
continue;
}
_left = new CriteriaExpression(quotesRemovedExpression.Substring(0, pos)
.PutBackQuotedSections().ToString().Trim(), _operators);
if (op.Trim() == "IN" || op.Trim() == "NOT IN")
{
var criteriaExpression = new CriteriaExpression("");
criteriaExpression._expression = quotesRemovedExpression.Substring(pos + op.Length)
.PutBackQuotedSections().ToString().Trim();
_right = criteriaExpression;
}
else
{
_right = new CriteriaExpression(quotesRemovedExpression.Substring(pos + op.Length)
.PutBackQuotedSections().ToString().Trim(), _operators);
}
_expression = op;
break;
}
}
//If this was a terminal criteria i.e. it has no more children then
// this is the expression there will be no right and left expression.
if (string.IsNullOrEmpty(_expression))
{
_expression = quotesRemovedExpression.PutBackQuotedSections().DropOuterQuotes().ToString();
}
}
/// <summary>
/// Loads all the values for the current line and returns them in a list
/// </summary>
/// <returns>Returns a list of values</returns>
public List<string> GetValues()
{
HabaneroStringBuilder stringBuilder = new HabaneroStringBuilder(_currentLine.Replace(",\"\",", ",,"));
stringBuilder.SetQuotes(new string[] { "\"" });
stringBuilder.RemoveQuotedSections();
if (stringBuilder.IndexOf("\"") > -1)
{
string nextLine = _reader.ReadLine();
if (nextLine == null)
{
nextLine = "";
throw new UserException("Unclosed quote in CSV file, line " + _lineNo);
}
_currentLine = _currentLine + nextLine;
_lineNo++;
return GetValues();
}
List<string> values = new List<string>();
int commaPos = 0;
int pos = 0;
int endPos = 0;
do
{
commaPos = stringBuilder.IndexOf(",", pos);
if (commaPos == -1)
{
endPos = stringBuilder.ToString().Length;
}
else
{
endPos = commaPos;
}
string value = stringBuilder.Substring(pos, endPos - pos).PutBackQuotedSections().ToString().Trim();
if ((value.StartsWith("\"") && value.EndsWith("\"")) || (value.StartsWith("'") && value.EndsWith("'")))
{
value = value.Substring(1, value.Length - 2);
}
values.Add(value);
pos = commaPos + 1;
} while (commaPos != -1);
return values;
}