public void DoOrder(Linq.Expression <Func <T, object> > defaultSortProperty)
{
var sortPropertyPath = SearchPackage.SortColumn;
if (sortPropertyPath == null)
{
if (defaultSortProperty.Body is Linq.MemberExpression)
{
sortPropertyPath = ((Linq.MemberExpression)defaultSortProperty.Body).Member.Name;
}
else
{
var op = ((Linq.UnaryExpression)defaultSortProperty.Body).Operand;
sortPropertyPath = ((Linq.MemberExpression)op).Member.Name;
}
}
if (string.IsNullOrWhiteSpace(sortPropertyPath))
{
return;
}
var isAscending = SearchPackage.SortSord == null ||
SearchPackage.SortSord.ToLowerInvariant().Contains("asc");
var paramExpr = Linq.Expression.Parameter(_queryable.ElementType, "p");
var expr = BuildPropertyExpression(paramExpr, sortPropertyPath);
var orderByExpr = Linq.Expression.Lambda(expr, new[] { paramExpr });
var orderByCallExpr = Linq.Expression.Call(typeof(Queryable), isAscending ? "OrderBy" : "OrderByDescending",
new[] { _queryable.ElementType, expr.Type }, _queryable.Expression, orderByExpr);
_queryable = _queryable.Provider.CreateQuery <T>(orderByCallExpr);
}
public SearchPackageDataBuilder <T> SetFilterRule(Linq.Expression <Func <T, object> > filterProperty,
Func <string, Linq.Expression <Func <T, bool> > > filterAction)
{
var filterPropertyName = filterProperty.Body.ToString();
filterPropertyName = filterPropertyName.Substring(filterPropertyName.IndexOf('.') + 1).TrimEnd(new [] { ')' });
_filterActions.Add(filterPropertyName.ToLower(), filterAction);
return(this);
}
public List <T> GetExportResult(Linq.Expression <Func <T, object> > defaultSortProperty)
{
var recordsTotalCount = DoFilterData();
DoOrder(defaultSortProperty);
var gridResult = new List <T>();
foreach (var item in _queryable)
{
gridResult.Add(item);
}
return(gridResult);
}
public SearchPackageResult GetPageData(Linq.Expression <Func <T, object> > defaultSortProperty)
{
var recordsRequested = SearchPackage.RowCount;
var pageIndex = Math.Max(SearchPackage.PageIndex - 1, 0);
var recordsTotalCount = DoFilterData();
if (SearchPackage.TopRecords != 0)
{
recordsTotalCount = Math.Min(SearchPackage.TopRecords, recordsTotalCount);
}
var totalPages = 0;
if (recordsRequested > 0)
{
totalPages = (int)Math.Ceiling(((float)recordsTotalCount) / recordsRequested);
}
DoOrder(defaultSortProperty);
if (SearchPackage.TopRecords == 0)
{
_queryable = _queryable
.Skip(recordsRequested * pageIndex)
.Take(recordsRequested);
}
else
{
if (pageIndex == totalPages - 1)
{
var numRecords = recordsTotalCount - recordsRequested * pageIndex;
_queryable = _queryable
.Skip(recordsRequested * pageIndex)
.Take(numRecords);
}
else
{
_queryable = _queryable
.Skip(recordsRequested * pageIndex)
.Take(recordsRequested);
}
}
var gridRowData = new List <SearchPackageResultRow>();
// ReSharper disable once LoopCanBeConvertedToQuery
foreach (var item in _queryable)
{
gridRowData.Add(new SearchPackageResultRow()
{
id = _idMap(item),
cell = _cellMap(item)
});
}
return(new SearchPackageResult()
{
page = pageIndex + 1,
total = totalPages,
records = recordsTotalCount,
rows = gridRowData
});
}
public SearchPackageDataBuilder <T> Map(Linq.Expression <Func <T, object> > idExpression, Linq.Expression <Func <T, object> > cellExpression)
{
_idMap = idExpression.Compile();
_cellMap = cellExpression.Compile();
return(this);
}