internal protected static void Compare(CompareXEnum compare, StringBuilder sb, Context dc)
{
switch (compare)
{
case CompareXEnum.None:
return;
case CompareXEnum.Equal:
sb.Append("=");
return;
case CompareXEnum.NotEqual:
sb.Append("<>");
return;
case CompareXEnum.LessThan:
sb.Append("<");
return;
case CompareXEnum.LessThanOrEqual:
sb.Append("<=");
return;
case CompareXEnum.GreaterThan:
sb.Append(">");
return;
case CompareXEnum.GreaterThanOrEqual:
sb.Append(">=");
return;
case CompareXEnum.Like:
sb.Append(" like ");
return;
case CompareXEnum.NotLike:
sb.Append(" not like ");
return;
case CompareXEnum.In:
sb.Append(" in ");
return;
case CompareXEnum.NotIn:
sb.Append(" not in ");
return;
default:
throw XConfig.EC.Exception(XConfig.EC._023, compare.ToString());
}
}
internal ColumnParam GetKey(Expression bodyL, FuncEnum func, CompareXEnum compareX, string format = "")
{
if (bodyL.NodeType == ExpressionType.MemberAccess)
{
var leftBody = bodyL as MemberExpression;
var prop = default(PropertyInfo);
//
var mType = default(Type);
var alias = GetAlias(leftBody);
if (func == FuncEnum.CharLength ||
func == FuncEnum.ToString_CS_DateTime_Format)
{
var exp = leftBody.Expression;
if (exp is MemberExpression)
{
var clMemExpr = exp as MemberExpression;
mType = clMemExpr.Expression.Type;
prop = mType.GetProperty(clMemExpr.Member.Name);
}
else if (exp is ParameterExpression)
{
mType = leftBody.Expression.Type;
prop = mType.GetProperty(leftBody.Member.Name);
}
else
{
throw XConfig.EC.Exception(XConfig.EC._005, bodyL.ToString());
}
}
else
{
mType = leftBody.Expression.Type;
prop = mType.GetProperty(leftBody.Member.Name);
}
//
var type = prop.PropertyType;
var tbm = default(TableModelCache);
try
{
tbm = DC.XC.GetTableModel(mType);
}
catch (Exception ex)
{
if (ex.Message.Contains("004") &&
ex.Message.Contains("[XTable]"))
{
throw XConfig.EC.Exception(XConfig.EC._094, $"表达式 -- {bodyL.ToString()} -- 不能正确解析！");
}
}
var attr = tbm.PCA.FirstOrDefault(it => prop.Name.Equals(it.PropName, StringComparison.OrdinalIgnoreCase)).ColAttr;
return(new ColumnParam
{
Prop = prop.Name,
Key = attr.Name,
Alias = alias,
ValType = type,
TbMType = mType,
Format = format
});
}
else if (bodyL.NodeType == ExpressionType.Convert)
{
var exp = bodyL as UnaryExpression;
var opMem = exp.Operand;
return(GetKey(opMem, func, compareX));
}
else if (bodyL.NodeType == ExpressionType.Call)
{
var mcExpr = bodyL as MethodCallExpression;
if (func == FuncEnum.Trim ||
func == FuncEnum.LTrim ||
func == FuncEnum.RTrim)
{
var mem = mcExpr.Object;
return(GetKey(mem, func, compareX));
}
else if (compareX == CompareXEnum.In)
{
var mem = mcExpr.Arguments[0];
return(GetKey(mem, func, compareX));
}
else if (func == FuncEnum.ToString_CS_DateTime_Format)
{
var mem = mcExpr.Object;
var val = DC.VH.ValueProcess(mcExpr.Arguments[0], XConfig.CSTC.String);
return(GetKey(mem, func, compareX, val.Val.ToString()));
}
else if (func == FuncEnum.ToString_CS)
{
var mem = mcExpr.Object;
return(GetKey(mem, func, compareX));
}
else
{
throw XConfig.EC.Exception(XConfig.EC._018, $"{bodyL.NodeType}-{func}");
}
}
else
{
throw XConfig.EC.Exception(XConfig.EC._017, bodyL.NodeType.ToString());
}
}
