/// <summary>
/// 根据提供的类型 获取Excel 表头信息
/// </summary>
/// <param name="type">外界调用</param>
/// <param name="pi">如果是泛型属性，则继续</param>
/// <returns></returns>
public List <SheetInfo> GetSheetInfo(Type type, PropertyInfo pi = null)
{
var sheets = new List <SheetInfo>();
var propertyInfos = ReflectionTool.GetPropertyInfosFromCache(type);
var sheetName = type.FullName;
sheets.Add(new SheetInfo
{
Name = sheetName,
Type = type,
PropertyInfo = pi
});
var list = sheets[0].ColumnInfos;
foreach (var propertyInfo in propertyInfos)
{
if (propertyInfo.PropertyType.IsGenericType && propertyInfo.PropertyType.GetGenericTypeDefinition() != typeof(Nullable <>))
{
if (ReflectionTool.GetCustomAttributeEx <NotImportAttribute>(propertyInfo) == null)
{
var t = propertyInfo.PropertyType.GenericTypeArguments[0];
var dictTmp = GetSheetInfo(t, propertyInfo);
sheets.AddRange(dictTmp);
}
}
else
{
var notImport = (ReflectionTool.GetCustomAttributeEx <NotImportAttribute>(propertyInfo) != null);
string columnName = propertyInfo.Name;
/*添加列定义的字段类型*/
string columnTypename = GetColumnTypeName(propertyInfo, type);
////获取导入模板列中的备注内容
string columnComment = columnTypename;
if (ReflectionTool.GetCustomAttributeEx <ImportCommentAttribute>(propertyInfo) != null)
{
columnComment += ("," +
ReflectionTool.GetCustomAttributeEx <ImportCommentAttribute>(propertyInfo).Commont);
}
list.Add(new SheetColumnInfo()
{
NotImport = notImport,
Name = columnName,
Note = columnComment,
ColProperty = propertyInfo,
MustImport = ReflectionTool.GetCustomAttributeEx <RequiredAttribute>(propertyInfo) != null
});
}
}
return(sheets);
}
/// <summary>
/// 分页查询
/// 如果T中有OraModel，并且查询总记录数，并且查询条件都隶属于OraModel，则使用单表查询
/// </summary>
/// <param name="searchParameters">查询参数 <see cref="DynamicSearch.SearchParameters" /></param>
/// <param name="sqlwhere">字符串的查询条件</param>
/// <returns>一个待查询的结果集</returns>
public IQueryable <T> GetByPage(SearchParameters searchParameters, string sqlwhere = "")
{
//处理EF查询时，查询null值问题
searchParameters.BuildEmptySearch();
if (searchParameters.PageInfo.IsGetTotalCount && searchParameters.PageInfo.PageSize <= 1)
{
var attr = ReflectionTool.GetCustomAttributeEx <ViewOraModelAttribute>(typeof(T));
if (attr != null)
{
var oraModelPropInfos = ReflectionTool.GetPropertyInfosFromCache(attr.OraModel);
// 判断是否所有的查询条件都在单表内
var sqlWhereCondition = sqlwhere.Split(
new[] { " And ", " Or ", " AND ", " OR ", " and ", " or " },
StringSplitOptions.RemoveEmptyEntries);
sqlWhereCondition = GetPropNameBySqlWhere(sqlWhereCondition);
if (searchParameters.QueryModel?.Items != null &&
searchParameters.QueryModel.Items.All(a => oraModelPropInfos.Any(b => b.Name == a.Field)) &&
sqlWhereCondition.All(a => oraModelPropInfos.Any(b => a.ToLower().Equals(b.Name.ToLower()))))
{
GetSingleTableQuickCount(searchParameters, sqlwhere, attr);
return(new List <T>().AsQueryable());
}
}
}
IQueryable <T> list = _dbSet.Where(searchParameters.QueryModel);
if (!string.IsNullOrEmpty(sqlwhere))
{
list = list.Where(sqlwhere);
}
var totalCount = 0;
var result = GetByPage(list, searchParameters.PageInfo, out totalCount);
searchParameters.PageInfo.TotalCount = totalCount;
return(result);
}
