Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Data / System / Data / Common / TimeSpanStorage.cs / 1 / TimeSpanStorage.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 TimeSpanStorage : DataStorage { private static readonly TimeSpan defaultValue = TimeSpan.Zero; private TimeSpan[] values; public TimeSpanStorage(DataColumn column) : base(column, typeof(TimeSpan), defaultValue) { } override public Object Aggregate(int[] records, AggregateType kind) { bool hasData = false; try { switch (kind) { case AggregateType.Min: TimeSpan min = TimeSpan.MaxValue; for (int i = 0; i < records.Length; i++) { int record = records[i]; if (IsNull(record)) continue; min=(TimeSpan.Compare(values[record],min) < 0) ? values[record] : min; hasData = true; } if (hasData) { return min; } return NullValue; case AggregateType.Max: TimeSpan max = TimeSpan.MinValue; for (int i = 0; i < records.Length; i++) { int record = records[i]; if (IsNull(record)) continue; max=(TimeSpan.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: return base.Aggregate(records, kind); } } catch (OverflowException) { throw ExprException.Overflow(typeof(TimeSpan)); } throw ExceptionBuilder.AggregateException(kind, DataType); } override public int Compare(int recordNo1, int recordNo2) { TimeSpan valueNo1 = values[recordNo1]; TimeSpan valueNo2 = values[recordNo2]; if (valueNo1 == defaultValue || valueNo2 == defaultValue) { int bitCheck = CompareBits(recordNo1, recordNo2); if (0 != bitCheck) return bitCheck; } return TimeSpan.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) { if (IsNull(recordNo)) { return 0; } return 1; } TimeSpan valueNo1 = values[recordNo]; if ((defaultValue == valueNo1) && IsNull(recordNo)) { return -1; } return valueNo1.CompareTo((TimeSpan)value); } private static TimeSpan ConvertToTimeSpan(object value) { // Webdata 94686: Do not change this checks Type typeofValue= value.GetType(); if (typeofValue == typeof(string)) { return TimeSpan.Parse((string)value); } else if (typeofValue == typeof(Int32)) { return new TimeSpan((Int64)((Int32)value)); } else if (typeofValue == typeof(Int64)) { return new TimeSpan((Int64)value); } else { return (TimeSpan) value; } } public override object ConvertValue(object value) { if (NullValue != value) { if (null != value) { value = ConvertToTimeSpan(value); } 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) { TimeSpan value = values[record]; if (value != defaultValue) { return value; } return GetBits(record); } 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 { values[record] = ConvertToTimeSpan(value); SetNullBit(record, false); } } override public void SetCapacity(int capacity) { TimeSpan[] newValues = new TimeSpan[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) { return XmlConvert.ToTimeSpan(s); } override public string ConvertObjectToXml(object value) { return XmlConvert.ToString((TimeSpan)value); } override protected object GetEmptyStorage(int recordCount) { return new TimeSpan[recordCount]; } override protected void CopyValue(int record, object store, BitArray nullbits, int storeIndex) { TimeSpan[] typedStore = (TimeSpan[]) store; typedStore[storeIndex] = values[record]; nullbits.Set(storeIndex, IsNull(record)); } override protected void SetStorage(object store, BitArray nullbits) { values = (TimeSpan[]) 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
- StorageFunctionMapping.cs
- DefaultParameterValueAttribute.cs
- AsyncSerializedWorker.cs
- ConnectivityStatus.cs
- AssemblyAttributesGoHere.cs
- ValueProviderWrapper.cs
- AstTree.cs
- ISessionStateStore.cs
- BindingMemberInfo.cs
- ScriptDescriptor.cs
- DictionaryMarkupSerializer.cs
- FunctionImportElement.cs
- Intellisense.cs
- PropertyItem.cs
- OracleColumn.cs
- ScrollBarAutomationPeer.cs
- ByteAnimationBase.cs
- RecordConverter.cs
- CacheVirtualItemsEvent.cs
- ToolStripSystemRenderer.cs
- InternalException.cs
- ProfessionalColors.cs
- BufferBuilder.cs
- SoapAttributes.cs
- ContentIterators.cs
- Visitor.cs
- ContextProperty.cs
- ControlValuePropertyAttribute.cs
- TreeViewItem.cs
- Image.cs
- OracleString.cs
- AssemblySettingAttributes.cs
- EmptyCollection.cs
- TransactionFilter.cs
- ToolStripHighContrastRenderer.cs
- RootProfilePropertySettingsCollection.cs
- SystemSounds.cs
- ScaleTransform.cs
- QilValidationVisitor.cs
- InstancePersistence.cs
- ZipIOZip64EndOfCentralDirectoryBlock.cs
- MsdtcClusterUtils.cs
- AQNBuilder.cs
- ZipIOExtraField.cs
- XPathAxisIterator.cs
- NavigationCommands.cs
- LexicalChunk.cs
- AbstractDataSvcMapFileLoader.cs
- GeneralTransform2DTo3DTo2D.cs
- PathParser.cs
- OdbcReferenceCollection.cs
- sapiproxy.cs
- HwndSource.cs
- EntityDataSourceUtil.cs
- StrictAndMessageFilter.cs
- SystemInfo.cs
- TextSpan.cs
- UserUseLicenseDictionaryLoader.cs
- Point.cs
- DataBindEngine.cs
- TextEditorSelection.cs
- TabletCollection.cs
- PrinterResolution.cs
- SafeWaitHandle.cs
- WebResponse.cs
- PropertyMapper.cs
- DockingAttribute.cs
- XmlDataSourceView.cs
- HtmlElementCollection.cs
- PublisherMembershipCondition.cs
- DataGridCell.cs
- ColorConvertedBitmap.cs
- DataRowView.cs
- DateTimeStorage.cs
- RealProxy.cs
- DatePickerAutomationPeer.cs
- ConnectionManagementSection.cs
- RequestCacheValidator.cs
- UserPersonalizationStateInfo.cs
- ListSourceHelper.cs
- CollectionDataContract.cs
- CompiledWorkflowDefinitionContext.cs
- TextBoxBase.cs
- CapabilitiesAssignment.cs
- ResXResourceReader.cs
- NativeActivityMetadata.cs
- Panel.cs
- AutomationAttributeInfo.cs
- DetailsViewInsertedEventArgs.cs
- InvalidFilterCriteriaException.cs
- DocumentApplicationJournalEntryEventArgs.cs
- RichTextBoxConstants.cs
- FullTextState.cs
- PerfCounterSection.cs
- LayoutDump.cs
- BoolExpression.cs
- ValidationSummary.cs
- HighlightComponent.cs
- RsaSecurityToken.cs
- HttpCacheVaryByContentEncodings.cs