Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Data / System / Data / Common / SQLTypes / SQLDateTimeStorage.cs / 1305376 / 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.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- XPathScanner.cs
- WinInetCache.cs
- ErrorRuntimeConfig.cs
- ButtonColumn.cs
- LocalFileSettingsProvider.cs
- ClientFormsAuthenticationMembershipProvider.cs
- SignedInfo.cs
- ObjectReferenceStack.cs
- XmlEncodedRawTextWriter.cs
- BindToObject.cs
- KnownTypeDataContractResolver.cs
- SystemUdpStatistics.cs
- RuntimeIdentifierPropertyAttribute.cs
- FlowLayoutPanel.cs
- SynchronizingStream.cs
- Stack.cs
- SymDocumentType.cs
- StateMachineDesignerPaint.cs
- EmptyElement.cs
- ModelTreeEnumerator.cs
- ScriptRef.cs
- TCEAdapterGenerator.cs
- CompilerInfo.cs
- TextStore.cs
- SafeMILHandleMemoryPressure.cs
- Activity.cs
- ToolStripSettings.cs
- TraceListeners.cs
- ViewCellRelation.cs
- sqlstateclientmanager.cs
- TraceProvider.cs
- ISAPIWorkerRequest.cs
- RSAOAEPKeyExchangeFormatter.cs
- RootCodeDomSerializer.cs
- EntityDataSourceReferenceGroup.cs
- Graph.cs
- ObfuscateAssemblyAttribute.cs
- OptionUsage.cs
- DesignerResources.cs
- ResXDataNode.cs
- Vector3D.cs
- HMACSHA256.cs
- ForAllOperator.cs
- FormView.cs
- ValueChangedEventManager.cs
- WorkingDirectoryEditor.cs
- TreeViewEvent.cs
- BuildDependencySet.cs
- LinkArea.cs
- cookieexception.cs
- TypedReference.cs
- PtsHost.cs
- WebPartVerbCollection.cs
- WorkflowInstanceSuspendedRecord.cs
- WindowsIdentity.cs
- ErrorWebPart.cs
- RuntimeHelpers.cs
- FilterException.cs
- ExtensionQuery.cs
- GridViewItemAutomationPeer.cs
- ScrollItemProviderWrapper.cs
- MessageQueueInstaller.cs
- WpfGeneratedKnownTypes.cs
- MultiAsyncResult.cs
- LocalizationParserHooks.cs
- SecurityUtils.cs
- Compiler.cs
- BindStream.cs
- WorkflowCompensationBehavior.cs
- XsdDataContractImporter.cs
- RulePatternOps.cs
- SqlRemoveConstantOrderBy.cs
- VerticalAlignConverter.cs
- UnitControl.cs
- AsmxEndpointPickerExtension.cs
- HtmlLiteralTextAdapter.cs
- FixedSOMTable.cs
- listviewsubitemcollectioneditor.cs
- HttpRuntimeSection.cs
- Timer.cs
- PropertyValueUIItem.cs
- EventlogProvider.cs
- XmlArrayItemAttribute.cs
- WorkflowInvoker.cs
- _ConnectOverlappedAsyncResult.cs
- DictionaryContent.cs
- WebPartConnectionCollection.cs
- WizardPanel.cs
- CompatibleComparer.cs
- ProfileService.cs
- X509ChainPolicy.cs
- GeneralTransform2DTo3D.cs
- XmlSchemaDatatype.cs
- SequentialUshortCollection.cs
- SingleSelectRootGridEntry.cs
- IPAddressCollection.cs
- ComContractElementCollection.cs
- DataBinder.cs
- StateRuntime.cs
- UnsafeNativeMethods.cs