//分页select * from (select ROW_NUMBER() over(order by id asc) as 'rowNumber', * from tb_User) as temp where rowNumber between (((@pageindex-1)*@pagesize)+1) and (@pageindex*@pagesize)
public IEnumerable <T> FindPageList <T>(string where, int pageIndex, int pageSize, out int total, string sort = "") where T : new()
{
map = GetDataMap <T>();
DBProviderHelper db = new DBProviderHelper();
var jointSql = dbprovider.JointSql(map.tableName, map.GetColumnMapListStr(), where, sort);
var start = ((pageIndex - 1) * pageSize) + 1;
var end = (pageIndex * pageSize);
string querySql = dbprovider.GetPageListSql(jointSql);
DbParameter[] param = dbprovider.GetParameter(start, end, pageSize);
//先获取记录总数
total = GetCount("select count(1) from " + map.tableName + " " + where);
return(this.QueryCommandList <T>(querySql, param));
}
public static void Add(Type t)
{
DataMap map = null;
TableAttribute tableAttribute = null;
var tableAttributeObject = t.GetCustomAttributes(typeof(TableAttribute), true).FirstOrDefault();
if (tableAttributeObject.IsNullOrSpace())
{
map = new DataMap(t.Name, t.Name, t);
}
else
{
tableAttribute = (TableAttribute)tableAttributeObject;
map = new DataMap(tableAttribute.tableName, t.Name, t);
}
maps.Add(t, map);
}
public static TResult Load <TResult>(TResult model, IDataReader reader) where TResult : new()
{
Type t = typeof(TResult);
PropertyInfo[] properties = t.GetProperties();
DataMap map = new DataMap(t.Name, t.Name, t);
foreach (PropertyInfo info in properties)
{
if (reader[info.Name].GetType() == typeof(Int64))
{
info.SetValue(model, Convert.ToInt32(reader[info.Name]));
continue;
}
}
return(model);
}
public List <TResult> QueryReflect <TResult>(string querySql, object paramters = null) where TResult : new()
{
var list = new List <TResult>();
map = GetDataMap <TResult>();
//反射获取参数值
List <DbParameter> param = new List <DbParameter>();
CreateParamster(paramters, ref param);
var reader = QueryCommandReader(querySql, param.ToArray());
if (reader.HasRows)
{
while (reader.Read())
{
list.Add(Load(new TResult(), reader));
}
}
reader.Close();
return(list);
}
private static Func <object, string> CreateInsertMethodImpl(object model)
{
Type type = model.GetType();
DynamicMethod method = new DynamicMethod(string.Format("Update{0}", Guid.NewGuid()), typeof(string), new Type[] { typeof(object) }, true);
var iLGenerator = method.GetILGenerator();
iLGenerator.DeclareLocal(typeof(StringBuilder));
iLGenerator.Emit(OpCodes.Newobj, typeof(StringBuilder).GetConstructor(new Type[] { }));
iLGenerator.Emit(OpCodes.Stloc_0);
iLGenerator.DeclareLocal(typeof(StringBuilder));
iLGenerator.Emit(OpCodes.Newobj, typeof(StringBuilder).GetConstructor(new Type[] { }));
iLGenerator.Emit(OpCodes.Stloc_1);
DataMap map = Metadata.GetDataMap(model.GetType());
iLGenerator.BeginExceptionBlock();
var indexlocal = iLGenerator.DeclareLocal(typeof(string));
var indexlocalInt32 = iLGenerator.DeclareLocal(typeof(Int32));
var indexlocalSecond = iLGenerator.DeclareLocal(typeof(string));
foreach (ColumnMap item in (from p in map._properties select(map.GetMember(p.Name))))
{
if (!item.isAutoIncrement)
{
iLGenerator.Emit(OpCodes.Ldarg_0);
iLGenerator.Emit(OpCodes.Unbox_Any, type);
iLGenerator.Emit(OpCodes.Callvirt, item.GetMethodInfo);
if (item.MemberType == typeof(Int32))
{
iLGenerator.Emit(OpCodes.Stloc, indexlocalInt32);
iLGenerator.Emit(OpCodes.Ldloca_S, indexlocalInt32);
}
if (item.MemberType == typeof(Boolean))
{
iLGenerator.Emit(OpCodes.Call, typeof(Convert).GetMethod("ToInt32", new Type[] { typeof(Boolean) }));
iLGenerator.Emit(OpCodes.Stloc, indexlocalInt32);
iLGenerator.Emit(OpCodes.Ldloca_S, indexlocalInt32);
}
if (item.MemberType == typeof(Boolean))
{
iLGenerator.Emit(OpCodes.Call, typeof(Int32).GetMethod("ToString", new Type[] { }));
}
else
{
iLGenerator.Emit(OpCodes.Call, item.MemberType.GetMethod("ToString", new Type[] { }));
}
iLGenerator.Emit(OpCodes.Stloc, indexlocal);
iLGenerator.Emit(OpCodes.Ldstr, CreateFormatParamByType(item.MemberType));
iLGenerator.Emit(OpCodes.Ldloc, indexlocal);
iLGenerator.Emit(OpCodes.Call, typeof(string).GetMethod("Format", new Type[] { typeof(string), item.MemberType }));
iLGenerator.Emit(OpCodes.Stloc, indexlocal);
iLGenerator.Emit(OpCodes.Ldloc_0);
iLGenerator.Emit(OpCodes.Ldloc, indexlocal);
iLGenerator.Emit(OpCodes.Callvirt, typeof(StringBuilder).GetMethod("Append", new Type[] { typeof(string) }));
iLGenerator.Emit(OpCodes.Stloc_0);
iLGenerator.Emit(OpCodes.Ldstr, "{0},");
iLGenerator.Emit(OpCodes.Ldstr, item.MemberName);
iLGenerator.Emit(OpCodes.Call, typeof(string).GetMethod("Format", new Type[] { typeof(string), item.MemberType }));
iLGenerator.Emit(OpCodes.Stloc, indexlocalSecond);
iLGenerator.Emit(OpCodes.Ldloc_1);
iLGenerator.Emit(OpCodes.Ldloc, indexlocalSecond);
iLGenerator.Emit(OpCodes.Callvirt, typeof(StringBuilder).GetMethod("Append", new Type[] { typeof(string) }));
iLGenerator.Emit(OpCodes.Stloc_1);
}
}
iLGenerator.BeginCatchBlock(typeof(Exception));
iLGenerator.EmitCall(OpCodes.Call, typeof(Check).GetMethod("ThrowDataException"), null);
iLGenerator.EndExceptionBlock();
iLGenerator.Emit(OpCodes.Ldloc_0);
iLGenerator.Emit(OpCodes.Callvirt, typeof(StringBuilder).GetMethod("ToString", new Type[] { }));
iLGenerator.Emit(OpCodes.Call, typeof(SqlMapper).GetMethod("RemoveComma", new Type[] { typeof(string) }));
iLGenerator.Emit(OpCodes.Stloc, indexlocal);
iLGenerator.Emit(OpCodes.Ldloc_1);
iLGenerator.Emit(OpCodes.Callvirt, typeof(StringBuilder).GetMethod("ToString", new Type[] { }));
iLGenerator.Emit(OpCodes.Call, typeof(SqlMapper).GetMethod("RemoveComma", new Type[] { typeof(string) }));
iLGenerator.Emit(OpCodes.Stloc, indexlocalSecond);
iLGenerator.Emit(OpCodes.Ldstr, "INSERT INTO {0} ({1}) VALUES ({2})");
iLGenerator.Emit(OpCodes.Ldstr, map.tableName);
iLGenerator.Emit(OpCodes.Ldloc, indexlocalSecond);
iLGenerator.Emit(OpCodes.Ldloc, indexlocal);
iLGenerator.Emit(OpCodes.Call, typeof(string).GetMethod("Format", new Type[] { typeof(string), typeof(string), typeof(string), typeof(string) }));
iLGenerator.Emit(OpCodes.Ret);
return((Func <object, string>)method.CreateDelegate(typeof(Func <object, string>)));
}
public static Func <object, string> CreateUpdateSqlMethodImpl(object model)
{
Type type = model.GetType();
DynamicMethod method = new DynamicMethod(string.Format("Update{0}", Guid.NewGuid()), typeof(string), new Type[] { typeof(object) }, true);
var iLGenerator = method.GetILGenerator();
iLGenerator.DeclareLocal(typeof(StringBuilder));
iLGenerator.Emit(OpCodes.Newobj, typeof(StringBuilder).GetConstructor(new Type[] { }));
iLGenerator.Emit(OpCodes.Stloc_0);
DataMap map = Metadata.GetDataMap(model.GetType());
iLGenerator.Emit(OpCodes.Ldloc_0);
iLGenerator.Emit(OpCodes.Ldstr, "update " + map.tableName + " set ");
iLGenerator.Emit(OpCodes.Callvirt, typeof(StringBuilder).GetMethod("Append", new Type[] { typeof(string) }));
iLGenerator.Emit(OpCodes.Stloc_0);
iLGenerator.BeginExceptionBlock();
var indexlocal = iLGenerator.DeclareLocal(typeof(string));
var indexlocalInt32 = iLGenerator.DeclareLocal(typeof(Int32));
foreach (ColumnMap item in (from p in map._properties select(map.GetMember(p.Name))))
{
if (!item.isPrimaryKey)
{
iLGenerator.Emit(OpCodes.Ldarg_0);
iLGenerator.Emit(OpCodes.Unbox_Any, type);
iLGenerator.Emit(OpCodes.Callvirt, item.GetMethodInfo);
if (item.MemberType == typeof(Int32))
{
iLGenerator.Emit(OpCodes.Stloc, indexlocalInt32);
iLGenerator.Emit(OpCodes.Ldloca_S, indexlocalInt32);
}
if (item.MemberType == typeof(Boolean))
{
iLGenerator.Emit(OpCodes.Call, typeof(Convert).GetMethod("ToInt32", new Type[] { typeof(Boolean) }));
iLGenerator.Emit(OpCodes.Stloc, indexlocalInt32);
iLGenerator.Emit(OpCodes.Ldloca_S, indexlocalInt32);
}
if (item.MemberType == typeof(Boolean))
{
iLGenerator.Emit(OpCodes.Call, typeof(Int32).GetMethod("ToString", new Type[] { }));
}
else
{
iLGenerator.Emit(OpCodes.Call, item.MemberType.GetMethod("ToString", new Type[] { }));
}
iLGenerator.Emit(OpCodes.Stloc, indexlocal);
iLGenerator.Emit(OpCodes.Ldstr, item.MemberName + (item.MemberType == typeof(Int32) || item.MemberType == typeof(Boolean)?"=":"='"));
iLGenerator.Emit(OpCodes.Ldloc, indexlocal);
iLGenerator.Emit(OpCodes.Ldstr, item.MemberType == typeof(Int32) || item.MemberType == typeof(Boolean)?",":"',");
iLGenerator.Emit(OpCodes.Call, typeof(string).GetMethod("Concat", new Type[] { typeof(object), typeof(object), typeof(object) }));
iLGenerator.Emit(OpCodes.Stloc, indexlocal);
iLGenerator.Emit(OpCodes.Ldloc_0);
iLGenerator.Emit(OpCodes.Ldloc, indexlocal);
iLGenerator.Emit(OpCodes.Callvirt, typeof(StringBuilder).GetMethod("Append", new Type[] { typeof(string) }));
iLGenerator.Emit(OpCodes.Stloc_0);
}
}
iLGenerator.BeginCatchBlock(typeof(Exception));
iLGenerator.EmitCall(OpCodes.Call, typeof(Check).GetMethod("ThrowDataException"), null);
iLGenerator.EndExceptionBlock();
iLGenerator.Emit(OpCodes.Ldloc_0);
iLGenerator.Emit(OpCodes.Callvirt, typeof(StringBuilder).GetMethod("ToString", new Type[] { }));
iLGenerator.Emit(OpCodes.Call, typeof(SqlMapper).GetMethod("RemoveComma", new Type[] { typeof(string) }));
iLGenerator.Emit(OpCodes.Ret);
return((Func <object, string>)method.CreateDelegate(typeof(Func <object, string>)));
}
