Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / Data / System / Data / Common / SQLTypes / SQLDateTimeStorage.cs / 1 / SQLDateTimeStorage.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //[....] //----------------------------------------------------------------------------- namespace System.Data.Common { using System; using System.Xml; using System.Data.SqlTypes; using System.Diagnostics; using System.Globalization; using System.IO; using System.Xml.Serialization; using System.Collections; internal sealed class SqlDateTimeStorage : DataStorage { private SqlDateTime[] values; public SqlDateTimeStorage(DataColumn column) : base(column, typeof(SqlDateTime), SqlDateTime.Null, SqlDateTime.Null) { } override public Object Aggregate(int[] records, AggregateType kind) { bool hasData = false; try { switch (kind) { case AggregateType.Min: SqlDateTime min = SqlDateTime.MaxValue; for (int i = 0; i < records.Length; i++) { int record = records[i]; if (IsNull(record)) continue; if ((SqlDateTime.LessThan(values[record], min)).IsTrue) min = values[record]; hasData = true; } if (hasData) { return min; } return NullValue; case AggregateType.Max: SqlDateTime max = SqlDateTime.MinValue; for (int i = 0; i < records.Length; i++) { int record = records[i]; if (IsNull(record)) continue; if ((SqlDateTime.GreaterThan(values[record], max)).IsTrue) max = values[record]; hasData = true; } if (hasData) { return max; } return NullValue; case AggregateType.First: if (records.Length > 0) { return values[records[0]]; } return null;// no data => null case AggregateType.Count: int count = 0; for (int i = 0; i < records.Length; i++) { if (!IsNull(records[i])) count++; } return count; } } catch (OverflowException) { throw ExprException.Overflow(typeof(SqlDateTime)); } throw ExceptionBuilder.AggregateException(kind, DataType); } override public int Compare(int recordNo1, int recordNo2) { return values[recordNo1].CompareTo(values[recordNo2]); } override public int CompareValueTo(int recordNo, Object value) { return values[recordNo].CompareTo((SqlDateTime)value); } override public object ConvertValue(object value) { if (null != value) { return SqlConvert.ConvertToSqlDateTime(value); } return NullValue; } override public void Copy(int recordNo1, int recordNo2) { values[recordNo2] = values[recordNo1]; } override public Object Get(int record) { return values[record]; } override public bool IsNull(int record) { return (values[record].IsNull); } override public void Set(int record, Object value) { values[record] = SqlConvert.ConvertToSqlDateTime(value); } override public void SetCapacity(int capacity) { SqlDateTime[] newValues = new SqlDateTime[capacity]; if (null != values) { Array.Copy(values, 0, newValues, 0, Math.Min(capacity, values.Length)); } values = newValues; } override public object ConvertXmlToObject(string s) { SqlDateTime newValue = new SqlDateTime(); string tempStr =string.Concat("", s, ""); // this is done since you can give fragmet to reader, bug 98767 StringReader strReader = new StringReader(tempStr); IXmlSerializable tmp = newValue; using (XmlTextReader xmlTextReader = new XmlTextReader(strReader)) { tmp.ReadXml(xmlTextReader); } return ((SqlDateTime)tmp); } override public string ConvertObjectToXml(object value) { Debug.Assert(!DataStorage.IsObjectNull(value), "we shouldn't have null here"); Debug.Assert((value.GetType() == typeof(SqlDateTime)), "wrong input type"); StringWriter strwriter = new StringWriter(FormatProvider); using (XmlTextWriter xmlTextWriter = new XmlTextWriter (strwriter)) { ((IXmlSerializable)value).WriteXml(xmlTextWriter); } return (strwriter.ToString ()); } override protected object GetEmptyStorage(int recordCount) { return new SqlDateTime[recordCount]; } override protected void CopyValue(int record, object store, BitArray nullbits, int storeIndex) { SqlDateTime[] typedStore = (SqlDateTime[]) store; typedStore[storeIndex] = values[record]; nullbits.Set(record, IsNull(record)); } override protected void SetStorage(object store, BitArray nullbits) { values = (SqlDateTime[]) store; //SetNullStorage(nullbits); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- FormatStringEditor.cs
- CodeTypeReference.cs
- HtmlTableRowCollection.cs
- TextEncodedRawTextWriter.cs
- StringBlob.cs
- SourceFileInfo.cs
- TextSpanModifier.cs
- FontFamilyValueSerializer.cs
- Maps.cs
- View.cs
- SqlTypesSchemaImporter.cs
- RoleGroup.cs
- MultiTouchSystemGestureLogic.cs
- RelationshipManager.cs
- updatecommandorderer.cs
- PtsHost.cs
- SettingsBase.cs
- VectorValueSerializer.cs
- TextFormatterContext.cs
- SafeHandle.cs
- StructuralComparisons.cs
- CngProvider.cs
- FlowLayout.cs
- shaperfactoryquerycachekey.cs
- NetNamedPipeBinding.cs
- PaginationProgressEventArgs.cs
- DataSetFieldSchema.cs
- ControlIdConverter.cs
- OrderByQueryOptionExpression.cs
- SimpleTypeResolver.cs
- StrongTypingException.cs
- XmlSchemaCollection.cs
- SqlVersion.cs
- SafeSecurityHandles.cs
- AuthStoreRoleProvider.cs
- Delegate.cs
- ScriptResourceAttribute.cs
- MobileComponentEditorPage.cs
- HandledMouseEvent.cs
- AppDomainResourcePerfCounters.cs
- Parser.cs
- Win32.cs
- SerializationInfoEnumerator.cs
- SapiRecognizer.cs
- SizeChangedInfo.cs
- EventLog.cs
- KerberosSecurityTokenProvider.cs
- SemanticResolver.cs
- MetadataItem_Static.cs
- TextComposition.cs
- BoolExpr.cs
- DeferredElementTreeState.cs
- SrgsDocumentParser.cs
- CharacterBuffer.cs
- SiteIdentityPermission.cs
- ObjectDataSourceEventArgs.cs
- DBCommandBuilder.cs
- MetadataPropertyAttribute.cs
- DebugHandleTracker.cs
- DataServiceQueryProvider.cs
- WindowsSpinner.cs
- XamlStream.cs
- CodeVariableDeclarationStatement.cs
- Stylesheet.cs
- FactoryGenerator.cs
- HtmlElementErrorEventArgs.cs
- TempFiles.cs
- HtmlLiteralTextAdapter.cs
- SolidColorBrush.cs
- WebServiceErrorEvent.cs
- DataGridTableCollection.cs
- TextEvent.cs
- ArgumentFixer.cs
- SegmentInfo.cs
- BufferManager.cs
- TransformGroup.cs
- ServiceCredentials.cs
- StateMachineExecutionState.cs
- SystemIPv6InterfaceProperties.cs
- MaskedTextBox.cs
- HandledMouseEvent.cs
- MenuItemStyleCollectionEditor.cs
- DispatcherEventArgs.cs
- WebPartPersonalization.cs
- DataGridViewTopRowAccessibleObject.cs
- StackBuilderSink.cs
- safemediahandle.cs
- DataTable.cs
- InnerItemCollectionView.cs
- GradientBrush.cs
- SiblingIterators.cs
- ScrollBarAutomationPeer.cs
- LayoutTableCell.cs
- MultidimensionalArrayItemReference.cs
- ModelPropertyDescriptor.cs
- BindingsCollection.cs
- RestHandlerFactory.cs
- StorageEntityContainerMapping.cs
- WebBrowserPermission.cs
- Rotation3D.cs