/// <summary>
/// Adiciona uma condição do tipo OR.
/// </summary>
/// <param name="expression"></param>
/// <returns></returns>
public virtual ConditionalContainer Or(string expression)
{
expression.Require("expression").NotNull();
_conditionals.Add(Conditional.ParseTerm(expression));
if (_conditionals.Count > 1)
{
_logicalOperators.Add(LogicalOperator.Or);
}
return(this);
}
/// <summary>
/// Adiciona a condição inicial. Essa operação limpa todas a outras condições já existentes.
/// </summary>
/// <param name="expression"></param>
/// <returns></returns>
public virtual ConditionalContainer Start(string expression)
{
if (expression == null)
{
throw new ArgumentNullException("expression");
}
_conditionals.Clear();
_logicalOperators.Clear();
_conditionals.Add(Conditional.ParseTerm(expression));
return(this);
}
/// <summary>
/// Recupera a chamada de função.
/// </summary>
/// <param name="enumerator"></param>
/// <param name="configuration"></param>
/// <param name="containerStop"></param>
/// <param name="callName"></param>
/// <returns></returns>
private static ConditionalTerm GetFunctionCall(ref IEnumerator <Text.InterpreterExpression.Expression> enumerator, Text.InterpreterExpression.ILexerConfiguration configuration, char?containerStop, Column callName)
{
var call = callName;
var pars = new List <ConditionalTerm>();
var commaExpression = _conditionalLexer.TokenParser.GetTerm((int)Colosoft.Text.InterpreterExpression.TokenID.Comma);
var token = enumerator.Current;
var distinctFlag = false;
while (!token.ToString().Equals(")"))
{
if (!enumerator.MoveNext())
{
break;
}
token = enumerator.Current;
if (token.ToString().Equals(")"))
{
enumerator.MoveNext();
break;
}
var termText = enumerator.Current.Text;
ConditionalTerm term = null;
while (true)
{
term = GetTerm(ref enumerator, configuration);
if (term is Column && StringComparer.InvariantCultureIgnoreCase.Equals(((Column)term).Name, "DISTINCT"))
{
enumerator.MoveNext();
distinctFlag = true;
}
else
{
break;
}
}
if (StringComparer.InvariantCultureIgnoreCase.Equals(call.Name, "CAST") && pars.Count == 1 && term is Column)
{
term = new Constant(((Column)term).Name);
}
if (!enumerator.MoveNext())
{
pars.Add(term);
break;
}
if (Conditional.IsConditionalOperator(enumerator.Current))
{
var left = term;
var oper = new Operator(enumerator.Current.Text);
var right = GetTerm(ref enumerator);
term = new Conditional(left, oper, right);
if (!enumerator.MoveNext())
{
pars.Add(term);
break;
}
}
if (Formula.IsArithmeticOperator(enumerator.Current))
{
term = GetFormula(ref enumerator, configuration, term);
}
if ((token.Token == (int)Colosoft.Text.InterpreterExpression.TokenID.Identifier || Colosoft.Query.Parser.SqlTokenParser.IsSqlAnsiFunction(token.Token)) && enumerator.Current.Token == (int)Colosoft.Text.InterpreterExpression.TokenID.LParen)
{
var columnExpression = ParserColumnExpression(termText);
term = GetFunctionCall(ref enumerator, configuration, ')', (columnExpression as Column) ?? new Column(termText));
if (Formula.IsArithmeticOperator(enumerator.Current))
{
term = GetFormula(ref enumerator, configuration, term);
}
pars.Add(term);
token = enumerator.Current;
}
else
{
pars.Add(term);
token = enumerator.Current;
}
if (token.ToString().Equals(")"))
{
enumerator.MoveNext();
break;
}
if (!token.ToString().Equals(commaExpression))
{
throw new ConditionalParserException(string.Format("Expected comma after '{0}'", pars.Last().ToString()));
}
}
return(new FunctionCall()
{
Call = call,
Parameters = pars.ToArray(),
Options = distinctFlag ? FunctionCallOptions.Distinct : FunctionCallOptions.None
});
}
/// <summary>
/// Adiciona uma condição do tipo OR.
/// </summary>
/// <param name="conditional"></param>
/// <returns></returns>
public virtual IWhereClause Or(Conditional conditional)
{
Container.Or(conditional);
return(this);
}
/// <summary>
/// Adiciona a condição inicial. Essa operação limpa todas a outras condições já existentes.
/// </summary>
/// <param name="conditional"></param>
/// <returns></returns>
public virtual IWhereClause Start(Conditional conditional)
{
Container.Start(conditional);
return(this);
}
/// <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 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);
}
