public static IEnumerable <QueryResult <T> > Query <T>(
this IDocumentStore store, DocumentTable table, out QueryStats stats, bool top1 = false, string select = null, string where = "",
Window window = null, string orderby = "", bool includeDeleted = false, object parameters = null) =>
store.Query <T>(table, null, out stats, top1, select, where, window, orderby, includeDeleted, parameters);
IEnumerable <T> InternalQuery <T>(ManagedConnection connection, SqlBuilder sql, object parameters, bool hasTotalsQuery, out QueryStats stats)
{
var normalizedParameters = new FastDynamicParameters(
parameters as IEnumerable <Parameter> ?? ConvertToParameters <T>(parameters));
if (hasTotalsQuery)
{
using (var reader = connection.Connection.QueryMultiple(sql.ToString(), normalizedParameters))
{
stats = reader.Read <QueryStats>(buffered: true).Single();
return(reader.Read <T, object, T>((first, second) => first, "RowNumber", buffered: true));
}
}
using (var reader = connection.Connection.QueryMultiple(sql.ToString(), normalizedParameters))
{
List <T> rows = reader.Read <T, object, T>((first, second) => first, "RowNumber", buffered: true).ToList();
stats = new QueryStats
{
TotalResults = rows.Count
};
return(rows);
}
}
public static IEnumerable<IDictionary<string, object>> Query(
this IDocumentStore store, DocumentTable table, out QueryStats stats, string select = null, string where = "",
int skip = 0, int take = 0, string orderby = "", object parameters = null)
{
return store.Query<object>(table, out stats, @select, @where, skip, take, @orderby, parameters).Select(x => (IDictionary<string, object>) x.Data);
}
public IEnumerable <TProjection> Query <TProjection>(
DocumentTable table, out QueryStats stats, string select = null, string where = "",
int skip = 0, int take = 0, string orderby = "", object parameters = null)
{
if (select.IsNullOrEmpty() || select == "*")
{
select = "";
}
var projectToDictionary = typeof(TProjection).IsA <IDictionary <string, object> >();
if (!projectToDictionary)
{
select = MatchSelectedColumnsWithProjectedType <TProjection>(select);
}
var timer = Stopwatch.StartNew();
using (var connection = Database.Connect())
{
var sql = new SqlBuilder();
var isWindowed = skip > 0 || take > 0;
if (isWindowed)
{
sql.Append("select count(*) as TotalResults")
.Append("from {0}", Database.FormatTableNameAndEscape(table.Name))
.Append(!string.IsNullOrEmpty(@where), "where {0}", @where)
.Append(";");
sql.Append(@"with temp as (select *")
.Append(", row_number() over(ORDER BY {0}) as RowNumber", string.IsNullOrEmpty(@orderby) ? "CURRENT_TIMESTAMP" : @orderby)
.Append("from {0}", Database.FormatTableNameAndEscape(table.Name))
.Append(!string.IsNullOrEmpty(@where), "where {0}", @where)
.Append(")")
.Append("select {0} from temp", select.IsNullOrEmpty() ? "*" : select + ", RowNumber")
.Append("where RowNumber >= {0}", skip + 1)
.Append(take > 0, "and RowNumber <= {0}", skip + take)
.Append("order by RowNumber");
}
else
{
sql.Append(@"with temp as (select *")
.Append(", 0 as RowNumber")
.Append("from {0}", Database.FormatTableNameAndEscape(table.Name))
.Append(!string.IsNullOrEmpty(@where), "where {0}", @where)
.Append(")")
.Append("select {0} from temp", select.IsNullOrEmpty() ? "*" : select + ", RowNumber")
.Append(!string.IsNullOrEmpty(orderby), "order by {0}", orderby);
}
IEnumerable <TProjection> result;
if (projectToDictionary)
{
result = (IEnumerable <TProjection>)
InternalQuery <object>(connection, sql, parameters, isWindowed, out stats)
.Cast <IDictionary <string, object> >();
}
else
{
result = InternalQuery <TProjection>(connection, sql, parameters, isWindowed, out stats);
}
stats.QueryDurationInMilliseconds = timer.ElapsedMilliseconds;
if (isWindowed)
{
var potential = stats.TotalResults - skip;
if (potential < 0)
{
potential = 0;
}
stats.RetrievedResults = take > 0 && potential > take ? take : potential;
}
else
{
stats.RetrievedResults = stats.TotalResults;
}
Interlocked.Increment(ref numberOfRequests);
Logger.Information("Retrieved {0} of {1} in {2}ms", stats.RetrievedResults, stats.TotalResults, stats.QueryDurationInMilliseconds);
connection.Complete();
return(result);
}
}
public static IEnumerable <IDictionary <string, object> > Query(this IDocumentStore store, DocumentTable table, out QueryStats stats, string select = null, string where = "",
int skip = 0, int take = 0, string orderby = "", object parameters = null)
{
return(store.Query <IDictionary <string, object> >(table, out stats, @select, @where, skip, take, @orderby, parameters));
}
