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
- AddingNewEventArgs.cs
- EditorZone.cs
- CoTaskMemUnicodeSafeHandle.cs
- SqlUdtInfo.cs
- ClosableStream.cs
- StringSource.cs
- GatewayIPAddressInformationCollection.cs
- NumberEdit.cs
- UseManagedPresentationBindingElementImporter.cs
- UserPreferenceChangingEventArgs.cs
- DataGridTableStyleMappingNameEditor.cs
- RestClientProxyHandler.cs
- MouseButtonEventArgs.cs
- Marshal.cs
- JsonMessageEncoderFactory.cs
- CodeTypeParameter.cs
- FileLogRecordEnumerator.cs
- SingleSelectRootGridEntry.cs
- PriorityChain.cs
- HttpCacheParams.cs
- GroupItemAutomationPeer.cs
- WebPartConnectionsCloseVerb.cs
- XsltInput.cs
- LineServicesCallbacks.cs
- unsafeIndexingFilterStream.cs
- CollectionConverter.cs
- Size.cs
- ClrProviderManifest.cs
- PropertyGeneratedEventArgs.cs
- OracleString.cs
- DataGridViewColumnStateChangedEventArgs.cs
- LogRestartAreaEnumerator.cs
- SystemDiagnosticsSection.cs
- DPCustomTypeDescriptor.cs
- FixedDocumentSequencePaginator.cs
- MissingMemberException.cs
- SiteMapNodeItem.cs
- WindowHideOrCloseTracker.cs
- MultiAsyncResult.cs
- MoveSizeWinEventHandler.cs
- Decorator.cs
- SQLInt16Storage.cs
- UIElement3DAutomationPeer.cs
- GlyphCache.cs
- HandlerMappingMemo.cs
- WebServiceHandlerFactory.cs
- CacheSection.cs
- XmlBoundElement.cs
- DotAtomReader.cs
- WindowsScrollBarBits.cs
- PartialTrustVisibleAssembly.cs
- ContainsSearchOperator.cs
- SystemIPv6InterfaceProperties.cs
- Int64AnimationBase.cs
- ActivityPropertyReference.cs
- DateTimeFormat.cs
- PropertyInfo.cs
- _AutoWebProxyScriptEngine.cs
- SplitterCancelEvent.cs
- EqualityComparer.cs
- PrimitiveSchema.cs
- Fault.cs
- ValidationEventArgs.cs
- ButtonBaseAdapter.cs
- DataServiceRequest.cs
- KnownTypesHelper.cs
- ComplexTypeEmitter.cs
- UpdateManifestForBrowserApplication.cs
- ClientSettings.cs
- NativeObjectSecurity.cs
- WebServiceData.cs
- BaseCodePageEncoding.cs
- Style.cs
- ListViewEditEventArgs.cs
- Matrix.cs
- Bidi.cs
- DocumentViewerBase.cs
- BaseComponentEditor.cs
- SubtreeProcessor.cs
- SystemIPAddressInformation.cs
- RegionIterator.cs
- WebPartConnectVerb.cs
- CodeNamespace.cs
- FloatAverageAggregationOperator.cs
- ResourceCategoryAttribute.cs
- DataRecordInternal.cs
- DataGridViewIntLinkedList.cs
- DoubleAnimation.cs
- SoapReflectionImporter.cs
- SelectionRange.cs
- ContentElement.cs
- UInt16Storage.cs
- XmlIncludeAttribute.cs
- SmiMetaDataProperty.cs
- ColorTypeConverter.cs
- GC.cs
- CodeExporter.cs
- PassportPrincipal.cs
- XmlSchemaComplexContentExtension.cs
- NetSectionGroup.cs