public static string GetTextField <T>(SQLInfo <T> sql, DataFieldInfo p, string Quote)
{
var strFormat = string.Format("{0}{{0}}{1}.{0}{{1}}{1}", Quote[0], Quote[1]);
var strAliasFormat = string.Format("{0}{{0}}{1}", Quote[0], Quote[1]);
if (p.Expr != null)
{
return(GetTextField(sql, p.Expr, Quote) + " " + string.Format(strAliasFormat, p.Name));
}
if (p.Schema != null)
{
if (p.Name != "*")
{
strFormat = string.Format("{0}{{0}}{1}.{0}{{1}}{1}.{0}{{2}}{1}", Quote[0], Quote[1]);
return(string.Format(strFormat, p.Schema, p.Table, p.Name));
}
else
{
strFormat = string.Format("{0}{{0}}{1}.{0}{{1}}{1}.*", Quote[0], Quote[1]);
return(string.Format(strFormat, p.Schema, p.Table));
}
}
else
{
if (p.Name != "*")
{
return(string.Format(strFormat, p.Table, p.Name));
}
else
{
return(Quote[0] + p.Table + Quote[1] + ".*");
}
}
}
//[System.Diagnostics.DebuggerStepThrough]
private static DataFieldInfo GetExpressionInBinaryExpression <T>(
MemberInfo memberInfo,
SQLInfo <T> sql,
List <DataFieldInfo> fields1,
List <DataFieldInfo> fields2,
ParameterExpression pExpr1,
ParameterExpression pExpr2,
string alias1,
string alias2,
BinaryExpression Expr)
{
var ret = new DataFieldInfo();
ret.Expr = new TreeExpression();
ret.Expr.Op = Utils.GetOp(Expr.NodeType);
ret.Expr.Left = GetExpression(sql, fields1, fields2, pExpr1, pExpr2, alias1, alias2, Expr.Left);
ret.Expr.Right = GetExpression(sql, fields1, fields2, pExpr1, pExpr2, alias1, alias2, Expr.Right);
ret.Property = memberInfo;
ret.ParamExpr = Expression.Parameter(typeof(T), "p");
ret.Name = memberInfo.Name;
return(ret);
}
private static SQLInfo <T1> SelectByNewExpression <T, T1>(SQLInfo <T> sql, ParameterExpression pExpr, NewExpression Expr)
{
var retSQl = new SQLInfo <T1>();
DataFieldInfo field = null;
if (retSQl.SelectFields == null)
{
retSQl.SelectFields = new List <DataFieldInfo>();
}
foreach (var x in Expr.Arguments)
{
var mb = Expr.Members[Expr.Arguments.IndexOf(x)];
if (x is BinaryExpression)
{
var treeExpr = Compiler.Compile(sql, x);
field = new DataFieldInfo
{
Expr = treeExpr,
Name = mb.Name,
ParamExpr = pExpr,
Property = mb
};
retSQl.SelectFields.Add(field);
}
else
{
field = sql.Fields.FirstOrDefault(p => p.ParamExpr == pExpr && p.Property == mb);
if (field == null)
{
field = sql.Fields.FirstOrDefault(p => p.ParamExpr.Type == pExpr.Type && p.Property.Name == mb.Name);
}
if (field == null)
{
field = sql.Fields.FirstOrDefault(p => p.Property.Name == mb.Name);
}
if (field != null)
{
if (!(x is MemberExpression))
{
retSQl.SelectFields.Add(new DataFieldInfo()
{
Expr = Compiler.Compile(sql, x),
Name = field.Name,
ParamExpr = pExpr,
Property = pExpr.Type.GetProperty(field.Property.Name),
Schema = sql.SchemaName,
Table = sql.TableName
});
}
else
{
retSQl.SelectFields.Add(new DataFieldInfo()
{
Name = field.Name,
ParamExpr = pExpr,
Property = pExpr.Type.GetProperty(field.Property.Name),
Schema = sql.SchemaName,
Table = sql.TableName
});
}
}
else
{
throw new Exception(string.Format("'{0}' was not found", mb.Name));
}
}
}
return(retSQl);
}
private static List <DataFieldInfo> SelectFieldsInNewExpression <T>(
SQLInfo <T> sql,
List <DataFieldInfo> fields1,
List <DataFieldInfo> fields2,
ParameterExpression pExpr1,
ParameterExpression pExpr2,
string Alias1,
string Alias2,
NewExpression expr)
{
var ret = new List <DataFieldInfo>();
foreach (var x in expr.Arguments)
{
if (x == pExpr1)
{
ret.Add(new DataFieldInfo()
{
Name = "*",
ParamExpr = pExpr1,
Table = Alias1
});
}
else if (x == pExpr2)
{
ret.Add(new DataFieldInfo()
{
Name = "*",
ParamExpr = pExpr2,
Table = Alias2
});
}
else if (x is MemberExpression)
{
var mb = x as MemberExpression;
if (mb.Expression == pExpr1)
{
var fMb = fields2.FirstOrDefault(p => p.Property == mb.Member);
//if (fMb == null)
//{
// fMb = fields2.FirstOrDefault(p => p.Property.Name == mb.Member.Name);
//}
//if (fMb == null)
//{
// fMb = fields2.FirstOrDefault(p => p.Name == mb.Member.Name);
//}
if (fMb == null)
{
throw new Exception(string.Format("{0} was not found", mb.Member));
}
ret.Add(new DataFieldInfo()
{
Name = mb.Member.Name,
ParamExpr = pExpr1,
Table = Alias1
});
}
else if (mb.Expression == pExpr2)
{
var fMb = fields2.FirstOrDefault(p => p.Property == mb.Member);
if (fMb == null)
{
throw new Exception(string.Format("{0} was not found", mb.Member));
}
ret.Add(new DataFieldInfo()
{
Name = fMb.Name,
ParamExpr = pExpr1,
Table = Alias2
});
}
}
else if (x is BinaryExpression)
{
DataFieldInfo field = GetExpressionInBinaryExpression(
expr.Members[expr.Arguments.IndexOf(x)],
sql,
fields1,
fields2,
pExpr1,
pExpr2,
Alias1,
Alias2,
(BinaryExpression)x);
ret.Add(field);
}
else
{
throw new NotImplementedException();
}
}
return(ret);
}
