public SimpleBoolExpression(CompareCol col, CompareOp op, object value, String str, QueryInstance owner, string pramName)
{
Col = col;
Op = op;
Value = value;
ValueStr = str;
this.Onwer = owner
;
this.ParamName = pramName;
}
/// <summary>
/// 完成类似于exp1 = exp1 op col comop vlaue操作
/// </summary>
/// <param name="Exp1"></param>
/// <param name="Op"></param>
/// <param name="Col"></param>
/// <param name="ComOp"></param>
/// <param name="Value"></param>
/// <param name="ShowValue"></param>
public void AddBoolExpression(BoolExpression Exp1,
BoolOp Op, CompareCol Col, CompareOp ComOp, String Value, String ShowValue, String paramName)
{
var Exp2 = new BoolExpression()
{
Exp = new SimpleBoolExpression(Col, ComOp, Value, ShowValue, Exp1.QueryIns, paramName)
};
var Exp = Exp1.Exp;
var ComplexExp = Exp as ComplexBoolExpression;
if (ComplexExp == null)
{
ComplexExp = new ComplexBoolExpression(this.Ins);
ComplexExp.First = new BoolExpression()
{
Exp = Exp1.Exp
};
}
ComplexExp.Sequeces.Add(new AddBoolExpression(Op, Exp2));
Exp1.Exp = ComplexExp;
}
/// <summary>
/// 返回 col op value所形成的结果
/// </summary>
/// <param name="Col">比较的列名</param>
/// <param name="Op">比较的操作符</param>
/// <param name="Value">比较的实际值</param>
/// <param name="ShowValue">比较的表达值</param>
/// <returns>组成而成的布尔表达式</returns>
public IBoolExpressionNode CreateBoolExpression(CompareCol
Col, CompareOp Op, String Value, String ShowValue, string paramName)
{
return(new SimpleBoolExpression(Col, Op, Value, ShowValue, this.Ins, paramName));
}
