/// <summary>
/// Recupera o termo condicional contido no reader.
/// </summary>
/// <param name="reader"></param>
/// <returns></returns>
internal static protected ConditionalTerm GetConditionalTerm(Colosoft.Serialization.IO.CompactReader reader)
{
var type = reader.ReadString();
ConditionalTerm term = null;
if (string.IsNullOrEmpty(type))
{
term = new Constant();
}
else
{
if (type == "Conditional")
{
term = new Conditional();
}
else if (type == "ConditionalContainer")
{
term = new ConditionalContainer();
}
else if (type == "Operator")
{
term = new Operator();
}
else if (type == "Constant")
{
term = new Constant();
}
else if (type == "Column")
{
term = new Column();
}
else if (type == "Variable")
{
term = new Variable();
}
else if (type == "ValuesArray")
{
term = new ValuesArray();
}
else if (type == "QueryTerm")
{
term = new QueryTerm();
}
else if (type == "FunctionCall")
{
term = new FunctionCall();
}
else if (type == "MinusTerm")
{
term = new MinusTerm();
}
else if (type == "Formula")
{
term = new Formula();
}
else if (type == "Empty")
{
return(null);
}
else
{
throw new QueryInvalidOperationException("Invalid conditional type");
}
}
((ICompactSerializable)term).Deserialize(reader);
return(term);
}
/// <summary>
/// Recupera uma condição.
/// </summary>
/// <param name="enumerator"></param>
/// <param name="configuration"></param>
/// <param name="containerStop">Caracter que identifica o fim da condicional.</param>
/// <returns></returns>
private static ConditionalTerm GetConditional(ref IEnumerator <Text.InterpreterExpression.Expression> enumerator, Text.InterpreterExpression.ILexerConfiguration configuration, char?containerStop)
{
var left = GetTerm(ref enumerator, configuration);
var isLeftNotToken = enumerator.Current != null && (enumerator.Current.Token == (int)Parser.SqlTokenID.kNot);
int leftToken = enumerator.Current != null ? (int)enumerator.Current.Token : -1;
if (!enumerator.MoveNext() || enumerator.Current.Token == (int)Text.InterpreterExpression.TokenID.And || enumerator.Current.Token == (int)Parser.SqlTokenID.kAnd || enumerator.Current.Token == (int)Text.InterpreterExpression.TokenID.Or || enumerator.Current.Token == (int)Parser.SqlTokenID.kOr)
{
return(left);
}
if (containerStop != null && enumerator.Current.Text[0] == containerStop)
{
return(left);
}
var oper = enumerator.Current;
if (Formula.IsArithmeticOperator(oper))
{
left = GetFormula(ref enumerator, configuration, left);
oper = enumerator.Current;
if (enumerator.Current == null || (containerStop != null && enumerator.Current.Text[0] == containerStop))
{
return(left);
}
}
var operToken = _conditionalLexer.TokenParser.Parse(oper.Text);
if (left is Constant && operToken == (int)Text.InterpreterExpression.TokenID.LParen && (leftToken == (int)Parser.SqlTokenID.kDay || leftToken == (int)Parser.SqlTokenID.kMonth || leftToken == (int)Parser.SqlTokenID.kYear || leftToken == (int)Parser.SqlTokenID.kHour || leftToken == (int)Parser.SqlTokenID.kMinute || leftToken == (int)Parser.SqlTokenID.kSecond))
{
left = new Column(((Constant)left).Text);
}
if (isLeftNotToken && operToken == (int)Parser.SqlTokenID.kExists)
{
enumerator.MoveNext();
left = GetFunctionCall(ref enumerator, configuration, containerStop, new Column("NOT EXISTS"));
return(new Conditional(left, new Operator("NOT EXISTS"), null));
}
else if ((operToken == (int)Text.InterpreterExpression.TokenID.LParen) && (left is Column))
{
left = GetFunctionCall(ref enumerator, configuration, containerStop, (Column)left);
var function = (FunctionCall)left;
if (StringComparer.InvariantCultureIgnoreCase.Equals(((Column)function.Call).Name, "exists"))
{
function.Call = new Constant("EXISTS");
return(new Conditional(left, new Operator("EXISTS"), null));
}
oper = enumerator.Current;
if (oper == null)
{
return(function);
}
operToken = _conditionalLexer.TokenParser.Parse(oper.Text);
}
else if (operToken == (int)Colosoft.Text.InterpreterExpression.TokenID.Comma)
{
return(GetValuesArray(ref enumerator, configuration, containerStop, left));
}
if (!enumerator.MoveNext())
{
if (left is FunctionCall)
{
return(left);
}
throw new ConditionalParserException("Right conditional not found");
}
if (left is FunctionCall && enumerator.Current.Token == (int)Colosoft.Query.Parser.SqlTokenID.kEnd)
{
return(left);
}
var optOper = enumerator.Current;
var optOperToken = _conditionalLexer.TokenParser.Parse(optOper.Text);
bool isOptOper = (optOperToken == (int)Colosoft.Query.Parser.SqlTokenID.kNot) || (operToken == (int)Colosoft.Query.Parser.SqlTokenID.kNot);
if (isOptOper)
{
if (!enumerator.MoveNext())
{
throw new ConditionalParserException("Right conditional not found");
}
}
var right = GetTerm(ref enumerator, configuration);
enumerator.MoveNext();
if ((enumerator.Current != null) && (enumerator.Current.Text[0] == '(') && (right is Column))
{
right = GetFunctionCall(ref enumerator, configuration, containerStop, (Column)right);
}
else if (operToken == (int)Colosoft.Query.Parser.SqlTokenID.kIn || optOperToken == (int)Colosoft.Query.Parser.SqlTokenID.kIn)
{
if (!(right is ValuesArray))
{
var rcc = right as ConditionalContainer;
if (rcc != null)
{
right = new ValuesArray()
{
Values = rcc.Conditionals.ToArray()
};
}
else
{
right = new ValuesArray {
Values = new ConditionalTerm[] {
right
}
}
};
}
}
return(new Conditional(left, new Operator((isOptOper) ? oper.Text + ' ' + optOper.Text : oper.Text), right));
}
/// <summary>
/// Recupera o termo condicional contido no reader.
/// </summary>
/// <param name="reader"></param>
/// <returns></returns>
internal protected static ConditionalTerm GetConditionalTerm(System.Xml.XmlReader reader)
{
var type = reader.GetAttribute("type", Namespaces.SchemaInstance);
if (string.IsNullOrEmpty(type))
{
type = reader.LocalName;
}
ConditionalTerm term = null;
if (string.IsNullOrEmpty(type))
{
term = new Constant();
}
else
{
var index1 = type.IndexOf(":");
if (index1 >= 0)
{
type = type.Substring(index1 + 1);
}
var startPoint = type.IndexOf('.');
if (startPoint >= 0)
{
type = type.Substring(startPoint + 1);
}
if (type == "Conditional")
{
term = new Conditional();
}
else if (type == "ConditionalContainer")
{
term = new ConditionalContainer();
}
else if (type == "Operator")
{
term = new Operator();
}
else if (type == "Constant")
{
term = new Constant();
}
else if (type == "Column")
{
term = new Column();
}
else if (type == "Variable")
{
term = new Variable();
}
else if (type == "ValuesArray")
{
term = new ValuesArray();
}
else if (type == "QueryTerm")
{
term = new QueryTerm();
}
else if (type == "FunctionCall")
{
term = new FunctionCall();
}
else if (type == "MinusTerm")
{
term = new MinusTerm();
}
else if (type == "Formula")
{
term = new Formula();
}
else if (type == "Empty")
{
return(null);
}
else if (type == "Case")
{
term = new CaseConditional();
}
else
{
throw new QueryInvalidOperationException("Invalid conditional type");
}
}
((System.Xml.Serialization.IXmlSerializable)term).ReadXml(reader);
return(term);
}
