Merge branch 'master' into upstream/OptimizeVisitors

Author: SergeiPavlov

ChangeLog/7.1.0-RC2-dev.txt

@@ -0,0 +1,3 @@
+[main] Added support for DefaultExpression within Linq queries
+[main] Support for TimeOnly ctors (time parts and ticks) in Linq, except for SQLite and MySQL providers
+[main] No Session.Activate() in ToTransactional extension, it affects EntitySet<T> enumeration.

ChangeLog/7.1.0-Z_Final.txt

@@ -0,0 +1,14 @@
+[main] Unused Xtensive.Collections.PriorityQueue is removed
+[main] Xtensive.Orm.Rse.Providers.Provider.Sources has changed return type to IReadOnlyList<T>, as well as ctor parameter
+[main] SqlInsert.Values became obsolete and no longer in use. Use ValueRows collection to add value rows
+[main] DomainConfiguration.MaxNumberOfConditions is introduced
+[main] SqlDml.Truncate() is introduced.
+[main] WellKnown.MaxNumberOfConditions became obsolete, use new DomainConfiguration.MaxNumberOfConditions if needed
+[main] Temporary tables cleanup now uses TRUNCATE instead of DELETE when possible
+[main] Temporary tables population is increased with multi-row inserts - 256 and 16 items per INSERT
+[main] PersistParameterBinding has new field RowIndex, use it for multi-row inserts if needed
+[main] TemporaryTableDescriptor changed interface to IMultiRecordPersistDescriptor, fully compatible with IPersistDescriptor
+[main] SqlNode.Clone() method now returns SqlNode to take advantage of C# covariant returns and reduce casts overhead
+[main] Improved exception handling if some appered during asynchronous Session opening
+[postgresql] QueryInfo.MaxQueryParameterCount actualized, it is 65535 now
+[oracle] QueryInfo.MaxQueryParameterCount actualized, it is 65535 now

ChangeLog/7.2.0-Beta-1-dev.txt

@@ -1,3 +1,4 @@
+using System.Collections.Generic;
 using System.Linq.Expressions;
 using Xtensive.Linq;
 using Xtensive.Orm.Model;
@@ -14,9 +15,9 @@ internal class AddValueContext
     public LambdaExpression Lambda { get; set; }
     public SetStatement Statement { get; set; }
 
-    public FieldInfo Field { get; set; }
+    public FieldInfo Field => Descriptor.Field;
 
-    public bool SubqueryExists { get; set; }
+    public Dictionary<SqlColumn, SqlExpression> Values { get; set; }
 
     public object EvalLambdaBody() =>
       Lambda.Body is ConstantExpression ce

Extensions/Xtensive.Orm.BulkOperations/Internals/AddValueContext.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
+using System.Linq;
 using Xtensive.Sql;
 using Xtensive.Sql.Ddl;
 using Xtensive.Sql.Dml;
@@ -247,6 +248,10 @@ public virtual void Visit(SqlDropView node)
     {
     }
 
+    public virtual void Visit(SqlTruncateTable node)
+    {
+    }
+
     public virtual void Visit(SqlDynamicFilter node)
     {
       foreach (SqlExpression expression in node.Expressions)
@@ -314,9 +319,12 @@ public virtual void Visit(SqlInsert node)
     {
       VisitInternal(node.From);
       VisitInternal(node.Into);
-      foreach (var pair in node.Values) {
-        VisitInternal(pair.Key);
-        VisitInternal(pair.Value);
+      
+      foreach(var row in node.ValueRows) {
+        foreach(var columnvalue in row.Zip(node.ValueRows.Columns)) {
+          VisitInternal(columnvalue.Second);
+          VisitInternal(columnvalue.First);
+        }
       }
     }