/// <summary>
/// Updates the query by calling <see cref="SortBy{TEntity}(QueryBuilder{TEntity},ICollectionView)"/> and <see cref="PageBy{TEntity}(QueryBuilder{TEntity},IPagedCollectionView)"/> in sequence.
/// </summary>
/// <typeparam name="TEntity">The generic type of the entity</typeparam>
/// <param name="query">The query to update</param>
/// <param name="collectionView">The collection view to pass to each method</param>
/// <returns>An updated query</returns>
public static QueryBuilder <TEntity> SortAndPageBy <TEntity>(this QueryBuilder <TEntity> query, ICollectionView collectionView) where TEntity : Entity
{
IPagedCollectionView pagedCollectionView = collectionView as IPagedCollectionView;
if (pagedCollectionView == null)
{
throw new ArgumentException(Resources.MustImplementIpcv, "collectionView");
}
query = CollectionViewExtensions.SortBy(query, collectionView);
query = CollectionViewExtensions.PageBy(query, pagedCollectionView);
return(query);
}
/// <summary>
/// Orders the query using the specified group and sort descriptions.
/// </summary>
/// <typeparam name="TEntity">The generic type of the entity</typeparam>
/// <param name="query">The query to sort</param>
/// <param name="groupDescriptions">The group descriptions</param>
/// <param name="sortDescriptions">The sort descriptions</param>
/// <returns>A query ordered according to the specified descriptions</returns>
public static QueryBuilder <TEntity> SortBy <TEntity>(
this QueryBuilder <TEntity> query,
IEnumerable <GroupDescription> groupDescriptions,
IEnumerable <SortDescription> sortDescriptions) where TEntity : Entity
{
bool isFirst = true;
// First we'll sort according to the group descriptions
foreach (PropertyGroupDescription groupDescription in groupDescriptions.OfType <PropertyGroupDescription>().Where(d => !string.IsNullOrEmpty(d.PropertyName)))
{
// If we sort by the same property, we need to determine the sort direction
bool isAscending = true;
foreach (SortDescription sortDescription in sortDescriptions.Where(d => !string.IsNullOrEmpty(d.PropertyName)))
{
if (groupDescription.PropertyName == sortDescription.PropertyName)
{
isAscending = (sortDescription.Direction == ListSortDirection.Ascending);
break;
}
}
query = ExpressionUtility.Sort(
query,
CollectionViewExtensions.GetSortMethodName(isFirst, isAscending),
ExpressionUtility.BuildPropertyExpression(typeof(TEntity), groupDescription.PropertyName));
isFirst = false;
}
// Then we'll sort according to the sort descriptions
foreach (SortDescription sortDescription in sortDescriptions.Where(d => !string.IsNullOrEmpty(d.PropertyName)))
{
bool isAscending = (sortDescription.Direction == ListSortDirection.Ascending);
query = ExpressionUtility.Sort(
query,
CollectionViewExtensions.GetSortMethodName(isFirst, isAscending),
ExpressionUtility.BuildPropertyExpression(typeof(TEntity), sortDescription.PropertyName));
isFirst = false;
}
return(query);
}
/// <summary>
/// Orders the query using the group and sort descriptions of the specified <paramref name="collectionView"/>.
/// </summary>
/// <typeparam name="TEntity">The generic type of the entity</typeparam>
/// <param name="query">The query to sort</param>
/// <param name="collectionView">The view containing the descriptions to sort by</param>
/// <returns>A query ordered according to the specified <paramref name="collectionView"/></returns>
public static QueryBuilder <TEntity> SortBy <TEntity>(this QueryBuilder <TEntity> query, ICollectionView collectionView) where TEntity : Entity
{
return(CollectionViewExtensions.SortBy(query, collectionView.GroupDescriptions, collectionView.SortDescriptions));
}
/// <summary>
/// Orders the query using the group and sort descriptions of the specified <paramref name="collectionView"/>.
/// </summary>
/// <typeparam name="TEntity">The generic type of the entity</typeparam>
/// <param name="query">The query to sort</param>
/// <param name="collectionView">The view containing the descriptions to sort by</param>
/// <returns>A query ordered according to the specified <paramref name="collectionView"/></returns>
public static EntityQuery <TEntity> SortBy <TEntity>(this EntityQuery <TEntity> query, ICollectionView collectionView) where TEntity : Entity
{
return(CollectionViewExtensions.SortBy(new QueryBuilder <TEntity>(), collectionView).ApplyTo(query));
}
