Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / fx / src / Data / System / Data / Common / DateTimeStorage.cs / 1 / DateTimeStorage.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //[....] //----------------------------------------------------------------------------- namespace System.Data.Common { using System; using System.Xml; using System.Data.SqlTypes; using System.Collections; internal sealed class DateTimeStorage : DataStorage { private static readonly DateTime defaultValue = DateTime.MinValue; private DateTime[] values; internal DateTimeStorage(DataColumn column) : base(column, typeof(DateTime), defaultValue) { } override public Object Aggregate(int[] records, AggregateType kind) { bool hasData = false; try { switch (kind) { case AggregateType.Min: DateTime min = DateTime.MaxValue; for (int i = 0; i < records.Length; i++) { int record = records[i]; if (HasValue(record)) { min=(DateTime.Compare(values[record],min) < 0) ? values[record] : min; hasData = true; } } if (hasData) { return min; } return NullValue; case AggregateType.Max: DateTime max = DateTime.MinValue; for (int i = 0; i < records.Length; i++) { int record = records[i]; if (HasValue(record)) { max=(DateTime.Compare(values[record],max) >= 0) ? values[record] : max; hasData = true; } } if (hasData) { return max; } return NullValue; case AggregateType.First: if (records.Length > 0) { return values[records[0]]; } return null; case AggregateType.Count: int count = 0; for (int i = 0; i < records.Length; i++) { if (HasValue(records[i])) { count++; } } return count; } } catch (OverflowException) { throw ExprException.Overflow(typeof(DateTime)); } throw ExceptionBuilder.AggregateException(kind, DataType); } override public int Compare(int recordNo1, int recordNo2) { DateTime valueNo1 = values[recordNo1]; DateTime valueNo2 = values[recordNo2]; if (valueNo1 == defaultValue || valueNo2 == defaultValue) { int bitCheck = CompareBits(recordNo1, recordNo2); if (0 != bitCheck) { return bitCheck; } } return DateTime.Compare(valueNo1, valueNo2); } public override int CompareValueTo(int recordNo, object value) { System.Diagnostics.Debug.Assert(0 <= recordNo, "Invalid record"); System.Diagnostics.Debug.Assert(null != value, "null value"); if (NullValue == value) { return (HasValue(recordNo) ? 1 : 0); } DateTime valueNo1 = values[recordNo]; if ((defaultValue == valueNo1) && !HasValue(recordNo)) { return -1; } return DateTime.Compare(valueNo1, (DateTime)value); } public override object ConvertValue(object value) { if (NullValue != value) { if (null != value) { value = ((IConvertible)value).ToDateTime(FormatProvider); } else { value = NullValue; } } return value; } override public void Copy(int recordNo1, int recordNo2) { CopyBits(recordNo1, recordNo2); values[recordNo2] = values[recordNo1]; } override public Object Get(int record) { // SQLBU 408233: two equal DateTime with different .Kind are equal DateTime value = values[record]; if ((value != defaultValue) || HasValue(record)) { return value; } return NullValue; } override public void Set(int record, Object value) { System.Diagnostics.Debug.Assert(null != value, "null value"); if (NullValue == value) { values[record] = defaultValue; SetNullBit(record, true); } else { DateTime retVal; DateTime tmpValue = ((IConvertible)value).ToDateTime(FormatProvider); switch (DateTimeMode) { case DataSetDateTime.Utc: if (tmpValue.Kind == DateTimeKind.Utc) { retVal = tmpValue; } else if (tmpValue.Kind == DateTimeKind.Local) { retVal = tmpValue.ToUniversalTime(); } else { retVal = DateTime.SpecifyKind(tmpValue, DateTimeKind.Utc); } break; case DataSetDateTime.Local: if (tmpValue.Kind == DateTimeKind.Local) { retVal = tmpValue; } else if (tmpValue.Kind == DateTimeKind.Utc) { retVal = tmpValue.ToLocalTime(); } else { retVal = DateTime.SpecifyKind(tmpValue, DateTimeKind.Local); } break; case DataSetDateTime.Unspecified: case DataSetDateTime.UnspecifiedLocal: retVal = DateTime.SpecifyKind(tmpValue, DateTimeKind.Unspecified); break; default: throw ExceptionBuilder.InvalidDateTimeMode(DateTimeMode); } values[record] = retVal; SetNullBit(record, false); } } override public void SetCapacity(int capacity) { DateTime[] newValues = new DateTime[capacity]; if (null != values) { Array.Copy(values, 0, newValues, 0, Math.Min(capacity, values.Length)); } values = newValues; base.SetCapacity(capacity); } override public object ConvertXmlToObject(string s) { object retValue; if (DateTimeMode == DataSetDateTime.UnspecifiedLocal) { retValue = XmlConvert.ToDateTime(s, XmlDateTimeSerializationMode.Unspecified); } else { retValue = XmlConvert.ToDateTime(s, XmlDateTimeSerializationMode.RoundtripKind); } return retValue; } override public string ConvertObjectToXml(object value) { string retValue; if (DateTimeMode == DataSetDateTime.UnspecifiedLocal) { retValue = XmlConvert.ToString((DateTime)value, XmlDateTimeSerializationMode.Local); } else { retValue = XmlConvert.ToString((DateTime)value, XmlDateTimeSerializationMode.RoundtripKind); } return retValue; } override protected object GetEmptyStorage(int recordCount) { return new DateTime[recordCount]; } override protected void CopyValue(int record, object store, BitArray nullbits, int storeIndex) { DateTime[] typedStore = (DateTime[]) store; bool isnull = !HasValue(record); if (isnull || ( 0 == (DateTimeMode & DataSetDateTime.Local))) { typedStore[storeIndex] = values[record]; // already universal time } else { typedStore[storeIndex] = values[record].ToUniversalTime(); } nullbits.Set(storeIndex, isnull); } override protected void SetStorage(object store, BitArray nullbits) { values = (DateTime[]) store; SetNullStorage(nullbits); if (DateTimeMode == DataSetDateTime.UnspecifiedLocal) { for (int i = 0; i < values.Length; i++) { if (HasValue(i)) { values[i] = DateTime.SpecifyKind(values[i].ToLocalTime(), DateTimeKind.Unspecified); //Strip the kind for UnspecifiedLocal. } } } else if (DateTimeMode == DataSetDateTime.Local) { for (int i = 0; i < values.Length; i++) { if (HasValue(i)) { values[i] = values[i].ToLocalTime(); } } } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //[....] //----------------------------------------------------------------------------- namespace System.Data.Common { using System; using System.Xml; using System.Data.SqlTypes; using System.Collections; internal sealed class DateTimeStorage : DataStorage { private static readonly DateTime defaultValue = DateTime.MinValue; private DateTime[] values; internal DateTimeStorage(DataColumn column) : base(column, typeof(DateTime), defaultValue) { } override public Object Aggregate(int[] records, AggregateType kind) { bool hasData = false; try { switch (kind) { case AggregateType.Min: DateTime min = DateTime.MaxValue; for (int i = 0; i < records.Length; i++) { int record = records[i]; if (HasValue(record)) { min=(DateTime.Compare(values[record],min) < 0) ? values[record] : min; hasData = true; } } if (hasData) { return min; } return NullValue; case AggregateType.Max: DateTime max = DateTime.MinValue; for (int i = 0; i < records.Length; i++) { int record = records[i]; if (HasValue(record)) { max=(DateTime.Compare(values[record],max) >= 0) ? values[record] : max; hasData = true; } } if (hasData) { return max; } return NullValue; case AggregateType.First: if (records.Length > 0) { return values[records[0]]; } return null; case AggregateType.Count: int count = 0; for (int i = 0; i < records.Length; i++) { if (HasValue(records[i])) { count++; } } return count; } } catch (OverflowException) { throw ExprException.Overflow(typeof(DateTime)); } throw ExceptionBuilder.AggregateException(kind, DataType); } override public int Compare(int recordNo1, int recordNo2) { DateTime valueNo1 = values[recordNo1]; DateTime valueNo2 = values[recordNo2]; if (valueNo1 == defaultValue || valueNo2 == defaultValue) { int bitCheck = CompareBits(recordNo1, recordNo2); if (0 != bitCheck) { return bitCheck; } } return DateTime.Compare(valueNo1, valueNo2); } public override int CompareValueTo(int recordNo, object value) { System.Diagnostics.Debug.Assert(0 <= recordNo, "Invalid record"); System.Diagnostics.Debug.Assert(null != value, "null value"); if (NullValue == value) { return (HasValue(recordNo) ? 1 : 0); } DateTime valueNo1 = values[recordNo]; if ((defaultValue == valueNo1) && !HasValue(recordNo)) { return -1; } return DateTime.Compare(valueNo1, (DateTime)value); } public override object ConvertValue(object value) { if (NullValue != value) { if (null != value) { value = ((IConvertible)value).ToDateTime(FormatProvider); } else { value = NullValue; } } return value; } override public void Copy(int recordNo1, int recordNo2) { CopyBits(recordNo1, recordNo2); values[recordNo2] = values[recordNo1]; } override public Object Get(int record) { // SQLBU 408233: two equal DateTime with different .Kind are equal DateTime value = values[record]; if ((value != defaultValue) || HasValue(record)) { return value; } return NullValue; } override public void Set(int record, Object value) { System.Diagnostics.Debug.Assert(null != value, "null value"); if (NullValue == value) { values[record] = defaultValue; SetNullBit(record, true); } else { DateTime retVal; DateTime tmpValue = ((IConvertible)value).ToDateTime(FormatProvider); switch (DateTimeMode) { case DataSetDateTime.Utc: if (tmpValue.Kind == DateTimeKind.Utc) { retVal = tmpValue; } else if (tmpValue.Kind == DateTimeKind.Local) { retVal = tmpValue.ToUniversalTime(); } else { retVal = DateTime.SpecifyKind(tmpValue, DateTimeKind.Utc); } break; case DataSetDateTime.Local: if (tmpValue.Kind == DateTimeKind.Local) { retVal = tmpValue; } else if (tmpValue.Kind == DateTimeKind.Utc) { retVal = tmpValue.ToLocalTime(); } else { retVal = DateTime.SpecifyKind(tmpValue, DateTimeKind.Local); } break; case DataSetDateTime.Unspecified: case DataSetDateTime.UnspecifiedLocal: retVal = DateTime.SpecifyKind(tmpValue, DateTimeKind.Unspecified); break; default: throw ExceptionBuilder.InvalidDateTimeMode(DateTimeMode); } values[record] = retVal; SetNullBit(record, false); } } override public void SetCapacity(int capacity) { DateTime[] newValues = new DateTime[capacity]; if (null != values) { Array.Copy(values, 0, newValues, 0, Math.Min(capacity, values.Length)); } values = newValues; base.SetCapacity(capacity); } override public object ConvertXmlToObject(string s) { object retValue; if (DateTimeMode == DataSetDateTime.UnspecifiedLocal) { retValue = XmlConvert.ToDateTime(s, XmlDateTimeSerializationMode.Unspecified); } else { retValue = XmlConvert.ToDateTime(s, XmlDateTimeSerializationMode.RoundtripKind); } return retValue; } override public string ConvertObjectToXml(object value) { string retValue; if (DateTimeMode == DataSetDateTime.UnspecifiedLocal) { retValue = XmlConvert.ToString((DateTime)value, XmlDateTimeSerializationMode.Local); } else { retValue = XmlConvert.ToString((DateTime)value, XmlDateTimeSerializationMode.RoundtripKind); } return retValue; } override protected object GetEmptyStorage(int recordCount) { return new DateTime[recordCount]; } override protected void CopyValue(int record, object store, BitArray nullbits, int storeIndex) { DateTime[] typedStore = (DateTime[]) store; bool isnull = !HasValue(record); if (isnull || ( 0 == (DateTimeMode & DataSetDateTime.Local))) { typedStore[storeIndex] = values[record]; // already universal time } else { typedStore[storeIndex] = values[record].ToUniversalTime(); } nullbits.Set(storeIndex, isnull); } override protected void SetStorage(object store, BitArray nullbits) { values = (DateTime[]) store; SetNullStorage(nullbits); if (DateTimeMode == DataSetDateTime.UnspecifiedLocal) { for (int i = 0; i < values.Length; i++) { if (HasValue(i)) { values[i] = DateTime.SpecifyKind(values[i].ToLocalTime(), DateTimeKind.Unspecified); //Strip the kind for UnspecifiedLocal. } } } else if (DateTimeMode == DataSetDateTime.Local) { for (int i = 0; i < values.Length; i++) { if (HasValue(i)) { values[i] = values[i].ToLocalTime(); } } } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- _ProxyChain.cs
- RuleAttributes.cs
- CompilerTypeWithParams.cs
- DataGridDefaultColumnWidthTypeConverter.cs
- CmsUtils.cs
- ExpressionBindings.cs
- SizeConverter.cs
- InitiatorServiceModelSecurityTokenRequirement.cs
- DesignerActionPropertyItem.cs
- iisPickupDirectory.cs
- XmlAutoDetectWriter.cs
- IndexedString.cs
- SystemGatewayIPAddressInformation.cs
- CodeAccessSecurityEngine.cs
- SqlServer2KCompatibilityAnnotation.cs
- UnsafeNativeMethods.cs
- TaskFileService.cs
- SHA512.cs
- RoleGroup.cs
- XmlMapping.cs
- XmlReturnWriter.cs
- SystemIPInterfaceStatistics.cs
- UshortList2.cs
- ValueTable.cs
- Formatter.cs
- TemplateKey.cs
- Root.cs
- HandlerBase.cs
- WebPartAddingEventArgs.cs
- SourceLineInfo.cs
- InfoCardBinaryReader.cs
- FileRecordSequenceCompletedAsyncResult.cs
- TextServicesDisplayAttributePropertyRanges.cs
- ScriptHandlerFactory.cs
- BindingsSection.cs
- HostedTransportConfigurationManager.cs
- PageThemeCodeDomTreeGenerator.cs
- SchemaSetCompiler.cs
- SecurityManager.cs
- DirectoryNotFoundException.cs
- LocatorGroup.cs
- ChannelProtectionRequirements.cs
- ModifierKeysConverter.cs
- CodeNamespaceImportCollection.cs
- InputScope.cs
- hebrewshape.cs
- TextCollapsingProperties.cs
- TcpStreams.cs
- InertiaTranslationBehavior.cs
- ConsoleTraceListener.cs
- XmlSchemaSimpleType.cs
- UserInitiatedNavigationPermission.cs
- DynamicResourceExtension.cs
- DispatchWrapper.cs
- SubqueryRules.cs
- PropertyPathWorker.cs
- CodeCatchClauseCollection.cs
- documentsequencetextpointer.cs
- FormsAuthenticationUserCollection.cs
- CrossSiteScriptingValidation.cs
- ListBindingHelper.cs
- LicenseManager.cs
- DataGridLengthConverter.cs
- SemaphoreFullException.cs
- WindowsFont.cs
- PermissionToken.cs
- SqlProcedureAttribute.cs
- HelpKeywordAttribute.cs
- FixedSOMLineCollection.cs
- basemetadatamappingvisitor.cs
- COM2EnumConverter.cs
- HeaderCollection.cs
- TabRenderer.cs
- SizeAnimation.cs
- TripleDES.cs
- UndirectedGraph.cs
- MorphHelper.cs
- CodeLinePragma.cs
- safesecurityhelperavalon.cs
- CustomAttributeSerializer.cs
- SqlConnectionPoolProviderInfo.cs
- TextRangeBase.cs
- TableRow.cs
- OleDbStruct.cs
- DrawingGroup.cs
- LocalizedNameDescriptionPair.cs
- CurrencyWrapper.cs
- StrokeCollection2.cs
- List.cs
- TraceContextRecord.cs
- VisualStyleRenderer.cs
- KeyValueConfigurationElement.cs
- HtmlLink.cs
- SynchronizedChannelCollection.cs
- RootContext.cs
- WebPartDisplayModeCollection.cs
- RoleGroup.cs
- arabicshape.cs
- activationcontext.cs
- NetSectionGroup.cs