Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / Data / System / Data / Common / SQLTypes / SQLMoneyStorage.cs / 1 / SQLMoneyStorage.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 SqlMoneyStorage : DataStorage { private SqlMoney[] values; public SqlMoneyStorage(DataColumn column) : base(column, typeof(SqlMoney), SqlMoney.Null, SqlMoney.Null) { } override public Object Aggregate(int[] records, AggregateType kind) { bool hasData = false; try { switch (kind) { case AggregateType.Sum: SqlDecimal sum = 0; foreach (int record in records) { if (IsNull(record)) continue; checked { sum += values[record];} hasData = true; } if (hasData) { return sum; } return NullValue; case AggregateType.Mean: SqlDecimal meanSum = 0; int meanCount = 0; foreach (int record in records) { if (IsNull(record)) continue; checked { meanSum += (values[record]).ToSqlDecimal();} meanCount++; hasData = true; } if (hasData) { SqlMoney mean = 0; checked {mean = (meanSum / (SqlDecimal)meanCount).ToSqlMoney();} return mean; } return NullValue; case AggregateType.Var: case AggregateType.StDev: int count = 0; SqlDouble var = (SqlDouble)0; SqlDouble prec = (SqlDouble)0; SqlDouble dsum = (SqlDouble)0; SqlDouble sqrsum = (SqlDouble)0; foreach (int record in records) { if (IsNull(record)) continue; dsum += values[record].ToSqlDouble(); sqrsum += (values[record]).ToSqlDouble() * (values[record]).ToSqlDouble(); count++; } if (count > 1) { var = ((SqlDouble)count * sqrsum - (dsum * dsum)); prec = var / (dsum * dsum); // we are dealing with the risk of a cancellation error // double is guaranteed only for 15 digits so a difference // with a result less than 1e-15 should be considered as zero if ((prec < 1e-15) || (var <0)) var = 0; else var = var / (count * (count -1)); if (kind == AggregateType.StDev) { return Math.Sqrt(var.Value); } return var; } return NullValue; case AggregateType.Min: SqlMoney min = SqlMoney.MaxValue; for (int i = 0; i < records.Length; i++) { int record = records[i]; if (IsNull(record)) continue; if ((SqlMoney.LessThan(values[record], min)).IsTrue) min = values[record]; hasData = true; } if (hasData) { return min; } return NullValue; case AggregateType.Max: SqlMoney max = SqlMoney.MinValue; for (int i = 0; i < records.Length; i++) { int record = records[i]; if (IsNull(record)) continue; if ((SqlMoney.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; case AggregateType.Count: count = 0; for (int i = 0; i < records.Length; i++) { if (!IsNull(records[i])) count++; } return count; } } catch (OverflowException) { throw ExprException.Overflow(typeof(SqlMoney)); } 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((SqlMoney)value); } override public object ConvertValue(object value) { if (null != value) { return SqlConvert.ConvertToSqlMoney(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.ConvertToSqlMoney( value); } override public void SetCapacity(int capacity) { SqlMoney[] newValues = new SqlMoney[capacity]; if (null != values) { Array.Copy(values, 0, newValues, 0, Math.Min(capacity, values.Length)); } values = newValues; } override public object ConvertXmlToObject(string s) { SqlMoney newValue = new SqlMoney(); 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 ((SqlMoney)tmp); } override public string ConvertObjectToXml(object value) { Debug.Assert(!DataStorage.IsObjectNull(value), "we shouldn't have null here"); Debug.Assert((value.GetType() == typeof(SqlMoney)), "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 SqlMoney[recordCount]; } override protected void CopyValue(int record, object store, BitArray nullbits, int storeIndex) { SqlMoney[] typedStore = (SqlMoney[]) store; typedStore[storeIndex] = values[record]; nullbits.Set(storeIndex, IsNull(record)); } override protected void SetStorage(object store, BitArray nullbits) { values = (SqlMoney[]) store; //SetNullStorage(nullbits); } } } // 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.Diagnostics; using System.Globalization; using System.IO; using System.Xml.Serialization; using System.Collections; internal sealed class SqlMoneyStorage : DataStorage { private SqlMoney[] values; public SqlMoneyStorage(DataColumn column) : base(column, typeof(SqlMoney), SqlMoney.Null, SqlMoney.Null) { } override public Object Aggregate(int[] records, AggregateType kind) { bool hasData = false; try { switch (kind) { case AggregateType.Sum: SqlDecimal sum = 0; foreach (int record in records) { if (IsNull(record)) continue; checked { sum += values[record];} hasData = true; } if (hasData) { return sum; } return NullValue; case AggregateType.Mean: SqlDecimal meanSum = 0; int meanCount = 0; foreach (int record in records) { if (IsNull(record)) continue; checked { meanSum += (values[record]).ToSqlDecimal();} meanCount++; hasData = true; } if (hasData) { SqlMoney mean = 0; checked {mean = (meanSum / (SqlDecimal)meanCount).ToSqlMoney();} return mean; } return NullValue; case AggregateType.Var: case AggregateType.StDev: int count = 0; SqlDouble var = (SqlDouble)0; SqlDouble prec = (SqlDouble)0; SqlDouble dsum = (SqlDouble)0; SqlDouble sqrsum = (SqlDouble)0; foreach (int record in records) { if (IsNull(record)) continue; dsum += values[record].ToSqlDouble(); sqrsum += (values[record]).ToSqlDouble() * (values[record]).ToSqlDouble(); count++; } if (count > 1) { var = ((SqlDouble)count * sqrsum - (dsum * dsum)); prec = var / (dsum * dsum); // we are dealing with the risk of a cancellation error // double is guaranteed only for 15 digits so a difference // with a result less than 1e-15 should be considered as zero if ((prec < 1e-15) || (var <0)) var = 0; else var = var / (count * (count -1)); if (kind == AggregateType.StDev) { return Math.Sqrt(var.Value); } return var; } return NullValue; case AggregateType.Min: SqlMoney min = SqlMoney.MaxValue; for (int i = 0; i < records.Length; i++) { int record = records[i]; if (IsNull(record)) continue; if ((SqlMoney.LessThan(values[record], min)).IsTrue) min = values[record]; hasData = true; } if (hasData) { return min; } return NullValue; case AggregateType.Max: SqlMoney max = SqlMoney.MinValue; for (int i = 0; i < records.Length; i++) { int record = records[i]; if (IsNull(record)) continue; if ((SqlMoney.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; case AggregateType.Count: count = 0; for (int i = 0; i < records.Length; i++) { if (!IsNull(records[i])) count++; } return count; } } catch (OverflowException) { throw ExprException.Overflow(typeof(SqlMoney)); } 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((SqlMoney)value); } override public object ConvertValue(object value) { if (null != value) { return SqlConvert.ConvertToSqlMoney(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.ConvertToSqlMoney( value); } override public void SetCapacity(int capacity) { SqlMoney[] newValues = new SqlMoney[capacity]; if (null != values) { Array.Copy(values, 0, newValues, 0, Math.Min(capacity, values.Length)); } values = newValues; } override public object ConvertXmlToObject(string s) { SqlMoney newValue = new SqlMoney(); 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 ((SqlMoney)tmp); } override public string ConvertObjectToXml(object value) { Debug.Assert(!DataStorage.IsObjectNull(value), "we shouldn't have null here"); Debug.Assert((value.GetType() == typeof(SqlMoney)), "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 SqlMoney[recordCount]; } override protected void CopyValue(int record, object store, BitArray nullbits, int storeIndex) { SqlMoney[] typedStore = (SqlMoney[]) store; typedStore[storeIndex] = values[record]; nullbits.Set(storeIndex, IsNull(record)); } override protected void SetStorage(object store, BitArray nullbits) { values = (SqlMoney[]) 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
- NaturalLanguageHyphenator.cs
- TextCharacters.cs
- Cloud.cs
- RsaSecurityTokenAuthenticator.cs
- ObfuscateAssemblyAttribute.cs
- UrlMappingCollection.cs
- Vector.cs
- GenericEnumerator.cs
- Dictionary.cs
- Vector.cs
- IPPacketInformation.cs
- HiddenField.cs
- WebEvents.cs
- ComponentDesigner.cs
- DbQueryCommandTree.cs
- WeakReferenceEnumerator.cs
- RecognizedWordUnit.cs
- CollectionConverter.cs
- WebControlParameterProxy.cs
- ServiceErrorHandler.cs
- LoginDesignerUtil.cs
- TextElementEnumerator.cs
- XmlSchemaChoice.cs
- CodeAttributeDeclarationCollection.cs
- WorkflowInstanceAbortedRecord.cs
- DbProviderFactory.cs
- Vertex.cs
- PixelShader.cs
- CompositeFontFamily.cs
- BitmapEffectGroup.cs
- SelectionItemProviderWrapper.cs
- SmtpSection.cs
- PageClientProxyGenerator.cs
- ContourSegment.cs
- SessionStateItemCollection.cs
- SafeMemoryMappedFileHandle.cs
- EdmFunctions.cs
- HttpsHostedTransportConfiguration.cs
- GlyphCache.cs
- MiniAssembly.cs
- AutomationPropertyInfo.cs
- StrongBox.cs
- Point3DCollection.cs
- CalendarDesigner.cs
- Tracking.cs
- TemplateBamlTreeBuilder.cs
- UIAgentAsyncEndRequest.cs
- StorageModelBuildProvider.cs
- PagesChangedEventArgs.cs
- CodeDirectiveCollection.cs
- mediapermission.cs
- DescendentsWalker.cs
- ApplicationProxyInternal.cs
- MD5CryptoServiceProvider.cs
- ToolTip.cs
- XamlTemplateSerializer.cs
- StructuralComparisons.cs
- VisualStyleRenderer.cs
- ISAPIApplicationHost.cs
- DictionaryContent.cs
- ApplicationBuildProvider.cs
- IMembershipProvider.cs
- ServiceAuthorizationManager.cs
- SynchronizedRandom.cs
- WindowsTokenRoleProvider.cs
- XmlUrlResolver.cs
- ValidateNames.cs
- AnimatedTypeHelpers.cs
- MultipartContentParser.cs
- PrefixHandle.cs
- FrugalList.cs
- KeyBinding.cs
- XhtmlBasicLiteralTextAdapter.cs
- AttachedPropertyInfo.cs
- ConstantProjectedSlot.cs
- AutomationPatternInfo.cs
- ServiceObjectContainer.cs
- DirectoryObjectSecurity.cs
- SafeRightsManagementQueryHandle.cs
- SmtpFailedRecipientsException.cs
- GraphicsPathIterator.cs
- AdCreatedEventArgs.cs
- StringUtil.cs
- ConfigurationPropertyCollection.cs
- WinFormsUtils.cs
- elementinformation.cs
- MLangCodePageEncoding.cs
- SamlConstants.cs
- XmlSchemaAnnotation.cs
- ObjectDataSourceEventArgs.cs
- DelegateInArgument.cs
- XpsFilter.cs
- GenericPrincipal.cs
- WpfSharedXamlSchemaContext.cs
- SQLMembershipProvider.cs
- DirectoryObjectSecurity.cs
- CommandSet.cs
- OdbcFactory.cs
- WebPartTransformer.cs
- HttpHeaderCollection.cs