Code:
/ FX-1434 / FX-1434 / 1.0 / 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
- AgileSafeNativeMemoryHandle.cs
- SQLInt32Storage.cs
- InternalControlCollection.cs
- AstTree.cs
- Bidi.cs
- UTF32Encoding.cs
- MemberListBinding.cs
- OuterGlowBitmapEffect.cs
- OLEDB_Enum.cs
- Component.cs
- UIHelper.cs
- DataGridViewDataErrorEventArgs.cs
- DLinqTableProvider.cs
- Application.cs
- X509IssuerSerialKeyIdentifierClause.cs
- CompositeTypefaceMetrics.cs
- TrackingParticipant.cs
- ServiceProviders.cs
- SafeNativeMethodsMilCoreApi.cs
- FilteredXmlReader.cs
- DataGridLinkButton.cs
- StdValidatorsAndConverters.cs
- CollectionAdapters.cs
- TimeManager.cs
- SystemUdpStatistics.cs
- FormsAuthenticationCredentials.cs
- WebServiceMethodData.cs
- LineServices.cs
- CodeTypeParameter.cs
- DateTimeUtil.cs
- cookiecollection.cs
- AccessDataSourceView.cs
- WebPartConnectionsEventArgs.cs
- Maps.cs
- ObjectSpanRewriter.cs
- ActiveXContainer.cs
- PngBitmapEncoder.cs
- UIElementHelper.cs
- DelegateArgument.cs
- Constraint.cs
- ToolStripContainer.cs
- AutomationElement.cs
- FileVersionInfo.cs
- Splitter.cs
- WebPartDisplayModeCancelEventArgs.cs
- Config.cs
- ZipIOFileItemStream.cs
- ScriptingWebServicesSectionGroup.cs
- DetailsViewRow.cs
- Utilities.cs
- ExecutionContext.cs
- SettingsContext.cs
- DataBoundControlAdapter.cs
- ComponentResourceKeyConverter.cs
- XamlBuildTaskServices.cs
- SBCSCodePageEncoding.cs
- HtmlInputButton.cs
- FlowDocumentPageViewerAutomationPeer.cs
- PersonalizablePropertyEntry.cs
- DataGridViewLinkColumn.cs
- TextComposition.cs
- AxisAngleRotation3D.cs
- StandardToolWindows.cs
- BaseValidator.cs
- ProfileSettings.cs
- StreamInfo.cs
- DataTable.cs
- SpecialNameAttribute.cs
- RadialGradientBrush.cs
- PropertyStore.cs
- TableItemStyle.cs
- BulletChrome.cs
- XslTransform.cs
- SecureEnvironment.cs
- TraceSource.cs
- SiteMap.cs
- TCEAdapterGenerator.cs
- HostingEnvironmentException.cs
- FixedDocument.cs
- EnvironmentPermission.cs
- XmlExtensionFunction.cs
- CriticalFinalizerObject.cs
- WS2007FederationHttpBinding.cs
- ExtendedTransformFactory.cs
- AttachedAnnotationChangedEventArgs.cs
- GridViewCommandEventArgs.cs
- CultureSpecificStringDictionary.cs
- MenuBindingsEditor.cs
- OleDbFactory.cs
- RuntimeHandles.cs
- WhiteSpaceTrimStringConverter.cs
- externdll.cs
- BorderGapMaskConverter.cs
- InkCanvasSelection.cs
- _TimerThread.cs
- SubpageParaClient.cs
- AutomationPeer.cs
- Propagator.ExtentPlaceholderCreator.cs
- ADMembershipProvider.cs
- TableDetailsCollection.cs