public override IQueryFilter GetUniqueFilter() { if (UniqueFilterProvider != null) { return(UniqueFilterProvider(this)); } else { var colFilter = new CrawlerColumns(); return(colFilter.KeyColumn == IdValue); } }
public static long Count(WhereDelegate<CrawlerColumns> where, Database database = null) { CrawlerColumns c = new CrawlerColumns(); IQueryFilter filter = where(c) ; Database db = database ?? Db.For<Crawler>(); QuerySet query = GetQuerySet(db); query.Count<Crawler>(); query.Where(filter); query.Execute(db); return query.Results.As<CountResult>(0).Value; }
public static Crawler GetOneWhere(WhereDelegate<CrawlerColumns> where, Database database = null) { var result = OneWhere(where, database); if(result == null) { CrawlerColumns c = new CrawlerColumns(); IQueryFilter filter = where(c); result = CreateFromFilter(filter, database); } return result; }
public static async Task BatchQuery <ColType>(int batchSize, WhereDelegate <CrawlerColumns> where, Action <IEnumerable <Crawler> > batchProcessor, Bam.Net.Data.OrderBy <CrawlerColumns> orderBy, Database database = null) { await Task.Run(async() => { CrawlerColumns columns = new CrawlerColumns(); var results = Top(batchSize, where, orderBy, database); while (results.Count > 0) { await Task.Run(() => { batchProcessor(results); }); ColType top = results.Select(d => d.Property <ColType>(orderBy.Column.ToString())).ToArray().Largest(); results = Top(batchSize, (CrawlerColumns) where (columns) && orderBy.Column > top, orderBy, database); } }); }
public static async Task BatchQuery(int batchSize, WhereDelegate <CrawlerColumns> where, Action <IEnumerable <Crawler> > batchProcessor, Database database = null) { await Task.Run(async() => { CrawlerColumns columns = new CrawlerColumns(); var orderBy = Bam.Net.Data.Order.By <CrawlerColumns>(c => c.KeyColumn, Bam.Net.Data.SortOrder.Ascending); var results = Top(batchSize, where, orderBy, database); while (results.Count > 0) { await Task.Run(() => { batchProcessor(results); }); long topId = results.Select(d => d.Property <long>(columns.KeyColumn.ToString())).ToArray().Largest(); results = Top(batchSize, (CrawlerColumns) where (columns) && columns.KeyColumn > topId, orderBy, database); } }); }
public static CrawlerCollection Top(int count, WhereDelegate<CrawlerColumns> where, OrderBy<CrawlerColumns> orderBy, Database database = null) { CrawlerColumns c = new CrawlerColumns(); IQueryFilter filter = where(c); Database db = database ?? Db.For<Crawler>(); QuerySet query = GetQuerySet(db); query.Top<Crawler>(count); query.Where(filter); if(orderBy != null) { query.OrderBy<CrawlerColumns>(orderBy); } query.Execute(db); var results = query.Results.As<CrawlerCollection>(0); results.Database = db; return results; }