Merge branch 'master' into master-typeid-as-parameter

# Conflicts:
#	Orm/Xtensive.Orm.PostgreSql/Sql.Drivers.PostgreSql/v8_0/Compiler.cs
#	Orm/Xtensive.Orm/Orm/Providers/SqlCompiler.cs
#	Orm/Xtensive.Orm/Sql/Compiler/SqlCompiler.cs
#	Orm/Xtensive.Orm/Sql/Info/QueryFeatures.cs

Author: alex-kulakov

ChangeLog/6.0.10_Z_Final.txt

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+[main] Fixed certain cases of NRE happened on Domain build due to views in extracted schema
+[main] Fixed NotSupportedException appeared on x86 architecture when DateTimeOffset is used in entites

ChangeLog/6.0.7_Z_Final.txt

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+[main] Fixed issue of actual NULL constant being treated as a caching value
+[main] Fixed rare case of infinite loop on batching commands
+[main] Improved VS compatibility by not processing design-time builds
+[main] Introduced IDbConnectionAccessor that gives access to certain stages of connection opening

ChangeLog/6.0.8_Z_Final.txt

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+[main] Resolved DateTimeOffset reading issues for certain queries with JOIN
+[main] Improved compiled queries work with entity parameters
+[main] Coalesce operator with local Entity/Structure instance in it is prohibited to prevent wrong query results
+[main] Ternary operator with local Entity/Structure instance in it is prohibited to prevent wrong query results
+[bulkoperations] Ressuracted check for transaction to prevent unrollbackable changes

ChangeLog/6.0.9_Z_Final.txt

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+[main] Improved enum comparison in queries so result SQL queries won't break index seek if any exists
+[main] Improved enum comparison in partial indexes
+[main] Addressed certain issues with with async queries containing .Store() and .In() via temporary table
+[sqlserver] Fixed Full-text indexes extraction for Azure SQL provider
+[sqlserver] Correct extraction of custom sequences based on types other than BIGINT

ChangeLog/7.0.1_Z_Final.txt

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+[main] Changed boolean expression translation to have better index utilization (rebuild of filtered indexes required)
+[main] Introduced access to DbConnection by using IDbConnectionAccessor implementers
+[main] Much faster query cache in multithreaded workloads
+[main] Addressed issue appeared in 7.0.0 when certain items of prefetch graph weren't fetched
+[main] Fixed certain issues caused by unnecessary check for zombie transactions on commit
+[main] Improved silent cleanup detection when new and removed Entities happen to conflict by table
+[main] Improved speed and memory usage of Session creation
+[main] Overall performance improvements
+[web] Introduced better way of integration with ASP.NET

ChangeLog/7.0.1_dev.txt

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+[main] Addressed certain issues of enum equality expressions translation that appeared in v7.0.0
+[sqlserver] Replaced usage of DATEDIFF with DATEDIFF_BIG for v13 and newer
+[sqlserver] Improved certain operations based on DateTime/DateTimeOffset subtraction for v13 and newer

ChangeLog/7.0.2_Z_Final.txt

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+[main] NodeCollection supports different equality comparers for internal name index
+[sqlserver] Fixed TimeSpan.Ticks extraction problem
+[oracle] Fixed scheme extraction for case-sensitive schema names

ChangeLog/7.0.3_Z_Final.txt

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+[main] ThreadSafeCache, ThreadSafeDictionary, ThreadSafeList collections are removed
+[main] INamedValueCollection and its the only implementer NamedValueCollection are removed
+[main] ICollectionChangeNotifier, CollectionChangeNotifierEventArgs are removed
+[main] ArrayUtils and EnumerableUtils<T> are removed
+[main] ISet<T> interface is removed and all usages are replaced with System.Collections.Generic.ISet<T>
+[main] Set<T>, SetSlim<T>, ReadOnlySet<T> collections and abstract SetBase class are removed
+[main] ReadOnlyList<T>, ReadOnlyCollection<T>, ReadOnlyDictionary<TKey, TValue> collections are removed
+[main] ThreadSafeCached type is removed
+[main] Triplet<T> and Triplet<TFirst,TSecond,TThird> are removed
+[main] TypeClassifier, LazyDictionary and FlagRegistry collections are removed
+[main] DifferentialDictionary and DifferentialDictionaryDifference types are removed
+[main] CollectionBase<T> is removed
+[main] StringExtensions.Join() methods are removed
+[main] CollectionExtensions.ReverseList() method is removed
+[main] SqlTranslator/SqlCompiler APIs were significantly changed in order to improve memory usage and perfromance
+[main] Introduced IQueryable<T>.Tag() extensions allowing to add tags to result SQL statement
+[main] Introduced Session.Tag() method for being able to tag queries within returned TagScope
+[main] Domain.TagsEnabled is introduced as easier alternative to DomainConfiguration.TagLocation!=TagLocation.Nowhere check
+[main] NativeTypeClassifier collection now inherits ClassifiedCollection directly
+[main] FlagCollection.Keys no returns .Net IReadOnlyList<TKey>
+[main] CollectionBaseSlim<T> no longer implements IList<T> and ICollection but implements ICollection<T> and IReadOnlyList<T>
+[main] AggregateException.Exceptions property changed its return type to IReadOnlyList<Exception>
+[main] AggregateException constuctors get array of exceptions instead of IEnumerable<Exception>
+[main] CopyDataHint.CopiedColumns property changed its return type to IReadOnlyList<Pair<string>>
+[main] DateHint.Identitites property changed return type to IReadOnlyList<IdentityPair>
+[main] UpdateDataHint.UpdateParameter property changed return type to IReadOnlyList<Pair<string, object>>
+[main] IUpgrader methods now return IReadOnlyList<NodeAction>
+[main] PropertyAccessorDictionary has changed API due to change of the base type and interfaces
+[main] FullTextIndexDefCollection changed its base type to CollectionBaseSlim<FullTextIndexDef>
+[main] HierarchyDefCollection base type changed to CollectionBaseSlim<HierarchyDef>
+[main] HierarchyDefCollection and TypeDefCollection changed events set due to change of base type
+[main] SessionConfiguration collection API changed due to changes in base type CollectionBaseSlim<T>
+[main] IGenerationTerm.Terms property changed return type to IReadOnlyList<string>
+[main] IProximityTerm.Terms property changed its return type to IReadOnlyList<IProximityOperand>
+[main] IOperation properties (PrecedingOperations, FollowingOperations, UndoOperations, IdentifiedEntities) changed return type
+[main] HierarchyInfo.Types property changed return type to IReadOnlyList<TypeInfo>
+[main] IndexInfo.Columns property return type changed to IReadOnlyList<ColumnInfo>
+[main] KeyInfo's Fields and Columns properties changed to ReadOnlyList<FieldInfo> and IReadOnlyList<ColumnInfo> respectively
+[main] TypeIndexInfoCollection.RealPrimaryIndexes property return type changed to IReadOnlyList<IndexInfo>
+[main] TypeIndexInfoCollection.GetIndexesContainingAllData() method changed its return type to IReadOnlyList<IndexInfo>
+[main] TypeInfo members that returned IList<T> changed return type to IReadOnlyList<TypeInfo>
+[main] PersistRequestBuilderContext.AffectedIndexes changed return type to IReadOnlyList<IndexInfo>
+[main] QueryRowFilterParameterBinding.RowTypeMapping changed return type to IReadOnlyList<TypeMapping>
+[main] ProviderInfo.SupportedTypes changed return type to IReadOnlySet<Type>
+[main] SessionHandler.Prefetch/PrefetchAsync changed type of one of incoming parameters from IList<T> to IReadOnlyList<T>
+[main] ContainsTableProvider.TargetColumns changed return type to IReadOnlyList<FullTextColumnInfo>
+[main] ColumnCollection is no longer inherited from ReadOnlyList<Column> but implements IReadOnlyList<Column>
+[main] ColumnGroupCollection is no longer inherited from ReadOnlyCollection<Column> but implements IReadOnlyList<ColumnGroup>
+[main] ChangeFieldTypeHint.AffectedColumns changed return type to IReadOnlyList<string>
+[main] RemoveFieldHint.AffectedColumns changed return type to IReadOnlyList<string>
+[main] RemoveTypeHint.AffectedTables changed return type to IReadOnlyList<string>
+[main] SchemaComparisonResult.UnsafeActions changed return type to IReadOnlyList<NodeAction>
+[main] UpgradeContext.Modules changed return type to IReadOnlyList<IModule>
+[main] UpgradeContext.OrderedUpgradeHandlers changed return type to IReadOnlyList<IUpgradeHandler>
+[main] UpgradeContext.UpgradeHandlers changed return type to IReadOnlyDictionary<Assembly, IUpgradeHandler>
+[main] KeyMapping.Map property changed type to .Net IReadOnlyDictionary<Key, Key>
+[main] InterfaceMapping's properties of ReadOnlyList<T> type changed the type to .Net IReadOnlyList<T>
+[main] Node's IncomingConnections and OutgoingConnections properties changed types to IReadOnlyList<NodeConnection<TNodeItem, TConnectionItem>>
+[main] CompositePreCompiler.Items became readonly field and changed its type to IReadOnlyList<IPreCompiler>
+[main] SqlCompilerConfiguration's SchemaMapping and DatabaseMapping properties changed return types to IReadOnlyDictionary<string, string>
+[main] TypeMappingRegistry.Mappings and ReverseMappings properties changed return types to IReadOnlyDictionary<TKey, TValue>
+[main] Xtensive.Orm.Services.QueryTranslationResult became read-only structure
+[main] Query and ParameterBindings properties of Xtensive.Orm.Services.QueryTranslationResult changed their types and became read-only
+[main] SqlTranslator.BuildBatch() method changed its parameter from string[] to IReadOnlyList<string>
+[main] TypeReference, QueryRequest QueryParameterBinding types became read-only structures
+[main] TypeInfoRef, ColumnInfoRef, ColumnGroup and ComparisonRule types became read-only structures
+[main] RecordSetHeader constructors changed IEnumerable<T> paremters to IReadOnlyList<T>
+[main] ColumnGroupCollection no longer takes IEnumerable<T> as parameter of constructor
+[main] ColumnCollection no longer takes IEnumerable<T> as parameter of constructor, only constructor with IReadOnlyList<T> is available now
+[main] Overall perfromance improved
+[main] Fixed issue when Execute/CreateDelayedQuery APIs query cache caused long-living objects
+[firebird] Added support for Firebird 4
+[sqlserver] Microsoft.Data.SqlClient is updated to verson 4.0.0
+[mysql] Added support for MySQL 5.7 and 8.0
+[mysql] Updated version of Google.Protobuf package

ChangeLog/7.1.0-Beta-1.txt

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+[main] Obsolete CatalogHelper class has been removed
+[main] Obsolete ReacreateTableHint has been removed
+[main] Obsolete Session.SelectStorageNode() method is removed
+[main] Obsolete methods from ArrayExtensions, EnumerableExtensions and QueryableExtensions have been removed
+[main] Obsolete DeleteDataHint.PostCopy property has been removed
+[main] Obsolete QueryEndpoint's members have been removed
+[main] Obsolete Query's members have been removed
+[main] Obsolete members of DelayedScalarQuery<T> have been removed
+[main] Obsolete FieldInfo.IsDynalicallyDefined property's been removed (FieldInfo.IsDynamicallyDefined is still there)
+[main] Some EventArgs inheritors that were sealed classes transformed to read-only structures
+[main] DbCommandEventArgs became read-only structure
+[main] SqlCustomFunctionCall and SqlFunctionCall share one base type
+[main] SqlFunctionCall.Arguments property is IReadOnlyList now and parameters can't be changed after instance creation
+[main] Xtensive.Sql.Dml.Extensions.IsNullReference() extension method is marked obsolete, use 'is null' operator instead
+[main] BitFaster.Caching package reference is updated to 1.0.7
+[main] No error caused by ambiguity due to new IQueryable extension methods of .Net 6
+[reprocessing] DomainBuildErrorEventArgs (not sealed) became read-only structure
+[reprocessing] ExecuteErrorEventArgs (not sealed) became read-only structure
+[tracking] TrackingCompletedEventArgs (sealed) became read-only structure
+[Web] Removed Obsolete SessionManager and StartupConfigurationExtension