public static IFindFluent <TDocument, BsonDocument> Only <TDocument>(this IFindFluent <TDocument, TDocument> find,
Expression <Func <TDocument, object> > include1,
Expression <Func <TDocument, object> > include2)
{
return(find.Project <BsonDocument>(Builders <TDocument> .Projection.Include(include1).Include(include2)));
}
public static IFindFluent <MongoAssetEntity, MongoAssetEntity> AssetSort(this IFindFluent <MongoAssetEntity, MongoAssetEntity> cursor, ClrQuery query)
{
return(cursor.Sort(query.BuildSort <MongoAssetEntity>()));
}
/// <summary>
/// Sorts the results by a descending field.
/// </summary>
/// <typeparam name="TDocument">The type of the document.</typeparam>
/// <typeparam name="TProjection">The type of the projection (same as TDocument if there is no projection).</typeparam>
/// <param name="find">The fluent find.</param>
/// <param name="field">The field.</param>
/// <returns>The fluent find interface.</returns>
public static IOrderedFindFluent <TDocument, TProjection> SortByDescending <TDocument, TProjection>(this IFindFluent <TDocument, TProjection> find, Expression <Func <TDocument, object> > field)
{
Ensure.IsNotNull(find, nameof(find));
Ensure.IsNotNull(field, nameof(field));
// We require an implementation of IFindFluent<TDocument, TProjection>
// to also implement IOrderedFindFluent<TDocument, TProjection>
return((IOrderedFindFluent <TDocument, TProjection>)find.Sort(
new DirectionalSortDefinition <TDocument>(new ExpressionFieldDefinition <TDocument>(field), SortDirection.Descending)));
}
public static IFindFluent <TDocument, TDocument> Page <TDocument>(this IFindFluent <TDocument, TDocument> find, QueryBase query)
{
return(find.Skip(query.Skip).Limit(query.Take));
}
/// <summary>
/// Get the first result or null.
/// </summary>
/// <typeparam name="TDocument">The type of the document.</typeparam>
/// <typeparam name="TProjection">The type of the projection (same as TDocument if there is no projection).</typeparam>
/// <param name="find">The fluent find.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>A Task whose result is the first result or null.</returns>
public static Task <TProjection> FirstOrDefaultAsync <TDocument, TProjection>(this IFindFluent <TDocument, TProjection> find, CancellationToken cancellationToken = default(CancellationToken))
{
Ensure.IsNotNull(find, nameof(find));
return(AsyncCursorHelper.FirstOrDefaultAsync(find.Limit(1).ToCursorAsync(cancellationToken), cancellationToken));
}
/// <summary>
/// Projects the result.
/// </summary>
/// <typeparam name="TDocument">The type of the document.</typeparam>
/// <typeparam name="TProjection">The type of the projection (same as TDocument if there is no projection).</typeparam>
/// <param name="find">The fluent find.</param>
/// <param name="projection">The projection.</param>
/// <returns>The fluent find interface.</returns>
public static IFindFluent <TDocument, BsonDocument> Project <TDocument, TProjection>(this IFindFluent <TDocument, TProjection> find, ProjectionDefinition <TDocument, BsonDocument> projection)
{
Ensure.IsNotNull(find, nameof(find));
Ensure.IsNotNull(projection, nameof(projection));
return(find.Project <BsonDocument>(projection));
}
T IQuery <T> .First()
{
IFindFluent <T, T> finder = BuildQueryable();
return(finder.FirstOrDefault());
}
public static IFindFluent <TDocument, TNewProjection> Project <TDocument, TNewProjection>(this IFindFluent <TDocument, TDocument> findFluent) where TNewProjection : class, new()
{
return(findFluent.Project(ExpressionMapper.MapExp <TDocument, TNewProjection>()));
}
public List <R> ToListAs <R>(Expression <Func <T, R> > singleSelector)
{
IFindFluent <T, T> finder = BuildQueryable();
return(finder.ToList().Select(singleSelector.Compile()).ToList());
}
public List <R> ToListAs <R>() where R : class, new()
{
IFindFluent <T, T> finder = BuildQueryable();
return(finder.As <R>().ToList());
}
public R FirstAs <R>() where R : class, new()
{
IFindFluent <T, T> finder = BuildQueryable();
return(finder.As <R>().FirstOrDefault());
}
List <T> IQuery <T> .ToList()
{
IFindFluent <T, T> finder = BuildQueryable();
return(finder.ToList());
}
public static IFindFluent <MongoContentEntity, MongoContentEntity> Sort(this IFindFluent <MongoContentEntity, MongoContentEntity> cursor, ODataUriParser query, Schema schema)
{
return(cursor.Sort(SortBuilder.BuildSort(query, schema)));
}
protected void DisplayQuery <TIn, TOut>(IFindFluent <TIn, TOut> query)
{
output.WriteLine(query.ToString());
output.WriteLine("============================");
}
public static IFindFluent <MongoAssetEntity, MongoAssetEntity> AssetSkip(this IFindFluent <MongoAssetEntity, MongoAssetEntity> cursor, ODataUriParser query)
{
return(cursor.Skip(query));
}
public static IFindFluent <T, T> Page <T>(this IFindFluent <T, T> findFluent, int pageIndex, int pageSize)
{
pageSize = Math.Min(30, pageSize);
return(findFluent.Skip((pageIndex - 1) * pageSize).Limit(pageSize));
}
public FindFluentPagingContainer(IFindFluent <TEntity, TEntity> source)
{
_source = source;
}
/// <inheritdoc />
protected override IFindFluent <Language, Language> Sort(IFindFluent <Language, Language> find)
{
return(find.SortBy(lang => lang.Identifier));
}
public static FindFluentPagingContainer <TEntity> New(
IFindFluent <TEntity, TEntity> find) =>
new FindFluentPagingContainer <TEntity>(find);
/// <summary>
/// Gets a single result or null.
/// </summary>
/// <typeparam name="TDocument">The type of the document.</typeparam>
/// <typeparam name="TProjection">The type of the projection (same as TDocument if there is no projection).</typeparam>
/// <param name="find">The fluent find.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>A Task whose result is the single result or null.</returns>
public static Task <TProjection> SingleOrDefaultAsync <TDocument, TProjection>(this IFindFluent <TDocument, TProjection> find, CancellationToken cancellationToken = default(CancellationToken))
{
Ensure.IsNotNull(find, nameof(find));
if (!find.Options.Limit.HasValue || find.Options.Limit.Value > 2)
{
find = find.Limit(2);
}
return(AsyncCursorHelper.SingleOrDefaultAsync(find.ToCursorAsync(cancellationToken), cancellationToken));
}
public static IFindFluent <MongoContentEntity, MongoContentEntity> ContentSort(this IFindFluent <MongoContentEntity, MongoContentEntity> cursor, ODataUriParser query, PropertyCalculator propertyCalculator)
{
var sort = query.BuildSort <MongoContentEntity>(propertyCalculator);
return(sort != null?cursor.Sort(sort) : cursor.SortByDescending(x => x.LastModified));
}
/// <summary>
/// Projects the result.
/// </summary>
/// <typeparam name="TDocument">The type of the document.</typeparam>
/// <typeparam name="TProjection">The type of the projection (same as TDocument if there is no projection).</typeparam>
/// <typeparam name="TNewProjection">The type of the new projection.</typeparam>
/// <param name="find">The fluent find.</param>
/// <param name="projection">The projection.</param>
/// <returns>The fluent find interface.</returns>
public static IFindFluent <TDocument, TNewProjection> Project <TDocument, TProjection, TNewProjection>(this IFindFluent <TDocument, TProjection> find, Expression <Func <TDocument, TNewProjection> > projection)
{
Ensure.IsNotNull(find, nameof(find));
Ensure.IsNotNull(projection, nameof(projection));
return(find.Project <TNewProjection>(new FindExpressionProjectionDefinition <TDocument, TNewProjection>(projection)));
}
public static IFindFluent <MongoContentEntity, MongoContentEntity> ContentTake(this IFindFluent <MongoContentEntity, MongoContentEntity> cursor, ODataUriParser query)
{
return(cursor.Take(query, 200, 20));
}
public async static Task <PaginatedMongoList <TModel, RModel> > ToPaginatedMongoListAsync <TModel, RModel>(this IFindFluent <TModel, TModel> source, IComponentContext container, AInBox.Astove.Core.Options.Filter filter, SortOptions sortOptions, KeyValue parentId, int pageIndex, int pageSize)
where TModel : class, IMongoModel, new()
where RModel : class, IMongoModel, IDto, new()
{
FilterOptions options = null;
FilterCondition[] conditions = null;
if (filter != null && (filter.Options != null || filter.Conditions != null))
{
options = new FilterOptions {
Filters = filter.Options.Filters.Where(f => f.Internal == false).ToList()
};
conditions = filter.Conditions.Where(c => c.Internal == false).ToArray();
}
int totalCount = (int)await source.CountAsync();
int totalPageCount = (int)Math.Ceiling(totalCount / (double)pageSize);
if ((pageIndex - 1) > totalPageCount)
{
pageIndex = totalPageCount;
}
var paginatedData = await source.Skip((pageIndex - 1) *pageSize).Limit(pageSize).ToListAsync();
var returnData = new List <RModel>();
paginatedData.ForEach(p => returnData.Add(p.CreateInstanceOf <RModel>()));
return(new PaginatedMongoList <TModel, RModel>(container, options, conditions, sortOptions, parentId, pageIndex, pageSize, totalCount, returnData, source));
}
public static IFindFluent <MongoContentEntity, MongoContentEntity> ContentSort(this IFindFluent <MongoContentEntity, MongoContentEntity> cursor, Query query)
{
return(cursor.Sort(query.BuildSort <MongoContentEntity>()));
}
public static Task <List <TDocument> > ToListAsync <TDocument>(this IFindFluent <TDocument, TDocument> find, QueryBase query, CancellationToken ct)
{
return(find.Skip(query.Skip).Limit(query.Take).ToListAsync(ct));
}
public static IFindFluent <MongoContentEntity, MongoContentEntity> ContentSkip(this IFindFluent <MongoContentEntity, MongoContentEntity> cursor, Query query)
{
return(cursor.Skip(query));
}
public static IFindFluent <TDocument, TDocument> Not <TDocument>(this IFindFluent <TDocument, TDocument> find,
Expression <Func <TDocument, object> > exclude1,
Expression <Func <TDocument, object> > exclude2)
{
return(find.Project <TDocument>(Builders <TDocument> .Projection.Exclude(exclude1).Exclude(exclude2)));
}
private async Task <IEnumerable <T> > Find <T>(ObjectSerializer Serializer, IMongoCollection <BsonDocument> Collection,
int Offset, int MaxCount, FilterDefinition <BsonDocument> BsonFilter, params string[] SortOrder)
{
IFindFluent <BsonDocument, BsonDocument> ResultSet = Collection.Find <BsonDocument>(BsonFilter);
if (SortOrder.Length > 0)
{
SortDefinition <BsonDocument> SortDefinition = null;
foreach (string SortBy in SortOrder)
{
if (SortDefinition is null)
{
if (SortBy.StartsWith("-"))
{
SortDefinition = Builders <BsonDocument> .Sort.Descending(Serializer.ToShortName(SortBy.Substring(1)));
}
else
{
SortDefinition = Builders <BsonDocument> .Sort.Ascending(Serializer.ToShortName(SortBy));
}
}
else
{
if (SortBy.StartsWith("-"))
{
SortDefinition = SortDefinition.Descending(Serializer.ToShortName(SortBy.Substring(1)));
}
else
{
SortDefinition = SortDefinition.Ascending(Serializer.ToShortName(SortBy));
}
}
}
ResultSet = ResultSet.Sort(SortDefinition);
}
if (Offset > 0)
{
ResultSet = ResultSet.Skip(Offset);
}
if (MaxCount < int.MaxValue)
{
ResultSet = ResultSet.Limit(MaxCount);
}
IAsyncCursor <BsonDocument> Cursor = await ResultSet.ToCursorAsync();
LinkedList <T> Result = new LinkedList <T>();
BsonDeserializationArgs Args = new BsonDeserializationArgs()
{
NominalType = typeof(T)
};
while (await Cursor.MoveNextAsync())
{
foreach (BsonDocument Document in Cursor.Current)
{
BsonDocumentReader Reader = new BsonDocumentReader(Document);
BsonDeserializationContext Context = BsonDeserializationContext.CreateRoot(Reader);
T Obj = (T)Serializer.Deserialize(Context, Args);
Result.AddLast(Obj);
}
}
return(Result);
}
}//
private Task<IDisposable> ToListAsync(IFindFluent<BsonDocument, BsonDocument> findFluent)
{
throw new NotImplementedException();
}
/// <summary>
/// 获取一条数据
/// </summary>
/// <param name="collName">表名</param>
/// <param name="filter">条件</param>
/// <returns></returns>
public BsonDocument Get(String collName, FilterDefinition <BsonDocument> filter)
{
IFindFluent <BsonDocument, BsonDocument> find = Database.GetCollection <BsonDocument>(collName).Find(filter);
return(find.FirstOrDefault());
}
