public static bool ToValue(List <FilterComp> items)
{
bool rtn = true;
foreach (FilterComp item in items)
{
if (item.IsFirst)
{
if (item.Child != null && item.Child.Count > 0)
{
rtn = FilterComp.ToValue(item.Child);
}
else
{
rtn = item.CurValue;
}
}
else
{
bool r;
if (item.Child != null && item.Child.Count > 0)
{
r = FilterComp.ToValue(item.Child);
}
else
{
r = item.CurValue;
}
if (item.IsAnd)
{
rtn = rtn && r;
}
else
{
rtn = rtn || r;
}
}
}
return(rtn);
}
/// <summary>
/// 获取当前数据的表达式
/// </summary>
/// <returns></returns>
protected virtual bool GetLinqWhereExp(object o)
{
bool currtn = true; //当前检索项的值
FilterCompCollection Comps = new FilterCompCollection();
FilterCompCollection curComps = Comps; //当前检索项
FilterCompCollection child;
for (int i = 0; i < FilterItems.Count; i++)
{
SearchItem item = FilterItems[i];
if (item.SqlPrefixType == SqlPrefixType.EndByGroup)
{
continue;
}
currtn = item.ToLinkFilter(o);
switch (item.SqlPrefixType)
{
case SqlPrefixType.AndSingle:
curComps.Add(new FilterComp()
{
IsFirst = (i == 0), IsAnd = true, CurValue = currtn
});
break;
case SqlPrefixType.OrSingle:
curComps.Add(new FilterComp()
{
IsFirst = (i == 0), IsAnd = false, CurValue = currtn
});
break;
case SqlPrefixType.AfterGroupByAnd:
child = new FilterCompCollection()
{
Owners = curComps
};
child.Add(new FilterComp()
{
IsFirst = true, IsAnd = true, CurValue = currtn
});
curComps.Add(new FilterComp()
{
IsFirst = (i == 0), IsAnd = true, CurValue = currtn, Child = child
});
curComps = child;
break;
case SqlPrefixType.AfterGroupByOr:
child = new FilterCompCollection()
{
Owners = curComps
};
child.Add(new FilterComp()
{
IsFirst = true, IsAnd = true, CurValue = currtn
});
curComps.Add(new FilterComp()
{
IsFirst = (i == 0), IsAnd = false, CurValue = currtn, Child = child
});
curComps = child;
break;
case SqlPrefixType.BeforeGroupByAnd:
if (curComps.Owners != null)
{
curComps = curComps.Owners;
}
curComps.Add(new FilterComp()
{
IsFirst = (i == 0), IsAnd = true, CurValue = currtn
});
break;
case SqlPrefixType.BeforeGroupByOr:
if (curComps.Owners != null)
{
curComps = curComps.Owners;
}
curComps.Add(new FilterComp()
{
IsFirst = (i == 0), IsAnd = false, CurValue = currtn
});
break;
default:
curComps.Add(new FilterComp()
{
IsFirst = (i == 0), IsAnd = true, CurValue = currtn
});
break;
}
}
return(FilterComp.ToValue(Comps));
}