Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / DataOracleClient / System / Data / OracleClient / OracleBinary.cs / 1 / OracleBinary.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace System.Data.OracleClient { using System; using System.Data.SqlTypes; using System.Data.Common; using System.Diagnostics; using System.Globalization; using System.Runtime.InteropServices; using System.Text; //--------------------------------------------------------------------- // OracleBinary // // This class implements support for Oracle's RAW and LONGRAW internal // data types. It should simply be a wrapper class around a CLS Byte // Array data type, with the appropriate internal constructors to allow // data values to be set from the data reader. // [StructLayout(LayoutKind.Sequential)] public struct OracleBinary : IComparable, INullable { private byte[] _value; public static readonly OracleBinary Null = new OracleBinary(true); // (internal) Construct from nothing -- the value will be null private OracleBinary(bool isNull) { _value = (isNull) ? null : new byte[0]; } public OracleBinary (byte[] b) { _value = (null == b) ? b : (byte[])(b.Clone()); } // (internal) construct from a row/parameter binding internal OracleBinary( NativeBuffer buffer, int valueOffset, int lengthOffset, MetaType metaType) { int valueLength = GetLength(buffer, lengthOffset, metaType); _value = new byte[valueLength]; GetBytes(buffer, valueOffset, metaType, 0, _value, 0, valueLength); } public bool IsNull { get { return (null == _value); } } public int Length { get { if (IsNull) { throw ADP.DataIsNull(); } return _value.Length; } } public byte[] Value { get { if (IsNull) { throw ADP.DataIsNull(); } return (byte[])(_value.Clone()); } } public byte this[int index] { get { if (IsNull) { throw ADP.DataIsNull(); } return _value[index]; } } public int CompareTo( object obj ) { if (obj.GetType() == typeof(OracleBinary)) { OracleBinary b = (OracleBinary)obj; // If both values are Null, consider them equal. // Otherwise, Null is less than anything. if (IsNull) { return b.IsNull ? 0 : -1; } if (b.IsNull) { return 1; } // Neither value is null, do the comparison. int result = PerformCompareByte(_value, b._value); return result; } throw ADP.WrongType(obj.GetType(), typeof(OracleBinary)); } public override bool Equals(object value) { if (value is OracleBinary) { return (this == (OracleBinary)value).Value; } else { return false; } } static internal int GetBytes( NativeBuffer buffer, int valueOffset, MetaType metaType, int sourceOffset, byte[] destinationBuffer, int destinationOffset, int byteCount ) { // This static method allows the GetBytes type getter to do it's job // without having to marshal the entire value into managed space. if (!metaType.IsLong) { buffer.ReadBytes(valueOffset+sourceOffset, destinationBuffer, destinationOffset, byteCount); } else { // Long values are bound out-of-line, which means we have // to do this the hard way... NativeBuffer_LongColumnData.CopyOutOfLineBytes(buffer.ReadIntPtr(valueOffset), sourceOffset, destinationBuffer, destinationOffset, byteCount); } return byteCount; } static internal int GetLength( NativeBuffer buffer, int lengthOffset, MetaType metaType ) { // Oracle only will write two bytes of length, but LONG data types // can exceed that amount; our piecewise callbacks will write a // full DWORD of length, so we need to get the full length for them, // but if we do that for all the other types, we'll be reading // un-initialized memory and bad things happen. if (metaType.IsLong) { return buffer.ReadInt32(lengthOffset); } else { return (int)buffer.ReadInt16(lengthOffset); } } public override int GetHashCode() { return IsNull ? 0 : _value.GetHashCode(); } private static int PerformCompareByte(byte[] x, byte[] y) { int len1 = x.Length; int len2 = y.Length; bool fXShorter = (len1 < len2); // the smaller length of two arrays int len = (fXShorter) ? len1 : len2; int i; for (i = 0; i < len; i ++) { if (x[i] != y[i]) { if (x[i] < y[i]) return -1; else return +1; } } if (len1 == len2) return 0; else { // if the remaining bytes are all zeroes, they are still equal. byte bZero = (byte)0; if (fXShorter) { // array X is shorter for (i = len; i < len2; i ++) { if (y[i] != bZero) return -1; } } else { // array Y is shorter for (i = len; i < len1; i ++) { if (x[i] != bZero) return +1; } } return 0; } } /* // We didn't expose this in Everett, and now it is a behavioral breaking change to do so... public static OracleBinary Parse(string s) { if ((s.Length & 0x1) != 0) { throw ADP.MustBeEvenLengthString("s"); } char[] c = s.ToCharArray(); byte[] b = new byte[s.Length / 2]; CultureInfo invariant = CultureInfo.InvariantCulture; for (int i = 0; i < s.Length; i += 2) { int h = hexDigits.IndexOf(Char.ToLower(c[i], invariant)); int l = hexDigits.IndexOf(Char.ToLower(c[i+1], invariant)); if (h < 0 || l < 0) { throw ADP.MustBeStringOfHexDigits("s"); } b[i/2] = (byte)((h << 4) | l); } OracleBinary result = new OracleBinary(b); return new OracleBinary(b); } // We didn't expose this in Everett, and now it is a behavioral breaking change to do so... public override string ToString() { if (IsNull) { return ADP.NullString; } StringBuilder s = new StringBuilder(); foreach (byte b in _value) { s.Append(String.Format((IFormatProvider)null, "{0,-2:x2}", b)); } string result = s.ToString(); return result; } */ // Alternative method for operator + public static OracleBinary Concat(OracleBinary x, OracleBinary y) { return (x + y); } // Alternative method for operator == public static OracleBoolean Equals(OracleBinary x, OracleBinary y) { return (x == y); } // Alternative method for operator > public static OracleBoolean GreaterThan(OracleBinary x, OracleBinary y) { return (x > y); } // Alternative method for operator >= public static OracleBoolean GreaterThanOrEqual(OracleBinary x, OracleBinary y) { return (x >= y); } // Alternative method for operator < public static OracleBoolean LessThan(OracleBinary x, OracleBinary y) { return (x < y); } // Alternative method for operator <= public static OracleBoolean LessThanOrEqual(OracleBinary x, OracleBinary y) { return (x <= y); } // Alternative method for operator != public static OracleBoolean NotEquals(OracleBinary x, OracleBinary y) { return (x != y); } public static implicit operator OracleBinary(byte[] b) { return new OracleBinary(b); } public static explicit operator Byte[](OracleBinary x) { return x.Value; } public static OracleBinary operator+ (OracleBinary x, OracleBinary y) { if (x.IsNull || y.IsNull) { return Null; } byte[] newValue = new byte[x._value.Length + y._value.Length]; x._value.CopyTo(newValue, 0); y._value.CopyTo(newValue, x.Value.Length); OracleBinary result = new OracleBinary(newValue); return result; } public static OracleBoolean operator== (OracleBinary x, OracleBinary y) { return (x.IsNull || y.IsNull) ? OracleBoolean.Null : new OracleBoolean(x.CompareTo(y) == 0); } public static OracleBoolean operator> (OracleBinary x, OracleBinary y) { return (x.IsNull || y.IsNull) ? OracleBoolean.Null : new OracleBoolean(x.CompareTo(y) > 0); } public static OracleBoolean operator>= (OracleBinary x, OracleBinary y) { return (x.IsNull || y.IsNull) ? OracleBoolean.Null : new OracleBoolean(x.CompareTo(y) >= 0); } public static OracleBoolean operator< (OracleBinary x, OracleBinary y) { return (x.IsNull || y.IsNull) ? OracleBoolean.Null : new OracleBoolean(x.CompareTo(y) < 0); } public static OracleBoolean operator<= (OracleBinary x, OracleBinary y) { return (x.IsNull || y.IsNull) ? OracleBoolean.Null : new OracleBoolean(x.CompareTo(y) <= 0); } public static OracleBoolean operator!= (OracleBinary x, OracleBinary y) { return (x.IsNull || y.IsNull) ? OracleBoolean.Null : new OracleBoolean(x.CompareTo(y) != 0); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace System.Data.OracleClient { using System; using System.Data.SqlTypes; using System.Data.Common; using System.Diagnostics; using System.Globalization; using System.Runtime.InteropServices; using System.Text; //--------------------------------------------------------------------- // OracleBinary // // This class implements support for Oracle's RAW and LONGRAW internal // data types. It should simply be a wrapper class around a CLS Byte // Array data type, with the appropriate internal constructors to allow // data values to be set from the data reader. // [StructLayout(LayoutKind.Sequential)] public struct OracleBinary : IComparable, INullable { private byte[] _value; public static readonly OracleBinary Null = new OracleBinary(true); // (internal) Construct from nothing -- the value will be null private OracleBinary(bool isNull) { _value = (isNull) ? null : new byte[0]; } public OracleBinary (byte[] b) { _value = (null == b) ? b : (byte[])(b.Clone()); } // (internal) construct from a row/parameter binding internal OracleBinary( NativeBuffer buffer, int valueOffset, int lengthOffset, MetaType metaType) { int valueLength = GetLength(buffer, lengthOffset, metaType); _value = new byte[valueLength]; GetBytes(buffer, valueOffset, metaType, 0, _value, 0, valueLength); } public bool IsNull { get { return (null == _value); } } public int Length { get { if (IsNull) { throw ADP.DataIsNull(); } return _value.Length; } } public byte[] Value { get { if (IsNull) { throw ADP.DataIsNull(); } return (byte[])(_value.Clone()); } } public byte this[int index] { get { if (IsNull) { throw ADP.DataIsNull(); } return _value[index]; } } public int CompareTo( object obj ) { if (obj.GetType() == typeof(OracleBinary)) { OracleBinary b = (OracleBinary)obj; // If both values are Null, consider them equal. // Otherwise, Null is less than anything. if (IsNull) { return b.IsNull ? 0 : -1; } if (b.IsNull) { return 1; } // Neither value is null, do the comparison. int result = PerformCompareByte(_value, b._value); return result; } throw ADP.WrongType(obj.GetType(), typeof(OracleBinary)); } public override bool Equals(object value) { if (value is OracleBinary) { return (this == (OracleBinary)value).Value; } else { return false; } } static internal int GetBytes( NativeBuffer buffer, int valueOffset, MetaType metaType, int sourceOffset, byte[] destinationBuffer, int destinationOffset, int byteCount ) { // This static method allows the GetBytes type getter to do it's job // without having to marshal the entire value into managed space. if (!metaType.IsLong) { buffer.ReadBytes(valueOffset+sourceOffset, destinationBuffer, destinationOffset, byteCount); } else { // Long values are bound out-of-line, which means we have // to do this the hard way... NativeBuffer_LongColumnData.CopyOutOfLineBytes(buffer.ReadIntPtr(valueOffset), sourceOffset, destinationBuffer, destinationOffset, byteCount); } return byteCount; } static internal int GetLength( NativeBuffer buffer, int lengthOffset, MetaType metaType ) { // Oracle only will write two bytes of length, but LONG data types // can exceed that amount; our piecewise callbacks will write a // full DWORD of length, so we need to get the full length for them, // but if we do that for all the other types, we'll be reading // un-initialized memory and bad things happen. if (metaType.IsLong) { return buffer.ReadInt32(lengthOffset); } else { return (int)buffer.ReadInt16(lengthOffset); } } public override int GetHashCode() { return IsNull ? 0 : _value.GetHashCode(); } private static int PerformCompareByte(byte[] x, byte[] y) { int len1 = x.Length; int len2 = y.Length; bool fXShorter = (len1 < len2); // the smaller length of two arrays int len = (fXShorter) ? len1 : len2; int i; for (i = 0; i < len; i ++) { if (x[i] != y[i]) { if (x[i] < y[i]) return -1; else return +1; } } if (len1 == len2) return 0; else { // if the remaining bytes are all zeroes, they are still equal. byte bZero = (byte)0; if (fXShorter) { // array X is shorter for (i = len; i < len2; i ++) { if (y[i] != bZero) return -1; } } else { // array Y is shorter for (i = len; i < len1; i ++) { if (x[i] != bZero) return +1; } } return 0; } } /* // We didn't expose this in Everett, and now it is a behavioral breaking change to do so... public static OracleBinary Parse(string s) { if ((s.Length & 0x1) != 0) { throw ADP.MustBeEvenLengthString("s"); } char[] c = s.ToCharArray(); byte[] b = new byte[s.Length / 2]; CultureInfo invariant = CultureInfo.InvariantCulture; for (int i = 0; i < s.Length; i += 2) { int h = hexDigits.IndexOf(Char.ToLower(c[i], invariant)); int l = hexDigits.IndexOf(Char.ToLower(c[i+1], invariant)); if (h < 0 || l < 0) { throw ADP.MustBeStringOfHexDigits("s"); } b[i/2] = (byte)((h << 4) | l); } OracleBinary result = new OracleBinary(b); return new OracleBinary(b); } // We didn't expose this in Everett, and now it is a behavioral breaking change to do so... public override string ToString() { if (IsNull) { return ADP.NullString; } StringBuilder s = new StringBuilder(); foreach (byte b in _value) { s.Append(String.Format((IFormatProvider)null, "{0,-2:x2}", b)); } string result = s.ToString(); return result; } */ // Alternative method for operator + public static OracleBinary Concat(OracleBinary x, OracleBinary y) { return (x + y); } // Alternative method for operator == public static OracleBoolean Equals(OracleBinary x, OracleBinary y) { return (x == y); } // Alternative method for operator > public static OracleBoolean GreaterThan(OracleBinary x, OracleBinary y) { return (x > y); } // Alternative method for operator >= public static OracleBoolean GreaterThanOrEqual(OracleBinary x, OracleBinary y) { return (x >= y); } // Alternative method for operator < public static OracleBoolean LessThan(OracleBinary x, OracleBinary y) { return (x < y); } // Alternative method for operator <= public static OracleBoolean LessThanOrEqual(OracleBinary x, OracleBinary y) { return (x <= y); } // Alternative method for operator != public static OracleBoolean NotEquals(OracleBinary x, OracleBinary y) { return (x != y); } public static implicit operator OracleBinary(byte[] b) { return new OracleBinary(b); } public static explicit operator Byte[](OracleBinary x) { return x.Value; } public static OracleBinary operator+ (OracleBinary x, OracleBinary y) { if (x.IsNull || y.IsNull) { return Null; } byte[] newValue = new byte[x._value.Length + y._value.Length]; x._value.CopyTo(newValue, 0); y._value.CopyTo(newValue, x.Value.Length); OracleBinary result = new OracleBinary(newValue); return result; } public static OracleBoolean operator== (OracleBinary x, OracleBinary y) { return (x.IsNull || y.IsNull) ? OracleBoolean.Null : new OracleBoolean(x.CompareTo(y) == 0); } public static OracleBoolean operator> (OracleBinary x, OracleBinary y) { return (x.IsNull || y.IsNull) ? OracleBoolean.Null : new OracleBoolean(x.CompareTo(y) > 0); } public static OracleBoolean operator>= (OracleBinary x, OracleBinary y) { return (x.IsNull || y.IsNull) ? OracleBoolean.Null : new OracleBoolean(x.CompareTo(y) >= 0); } public static OracleBoolean operator< (OracleBinary x, OracleBinary y) { return (x.IsNull || y.IsNull) ? OracleBoolean.Null : new OracleBoolean(x.CompareTo(y) < 0); } public static OracleBoolean operator<= (OracleBinary x, OracleBinary y) { return (x.IsNull || y.IsNull) ? OracleBoolean.Null : new OracleBoolean(x.CompareTo(y) <= 0); } public static OracleBoolean operator!= (OracleBinary x, OracleBinary y) { return (x.IsNull || y.IsNull) ? OracleBoolean.Null : new OracleBoolean(x.CompareTo(y) != 0); } } } // 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
- MetadataArtifactLoaderComposite.cs
- FrugalList.cs
- BitmapImage.cs
- XmlAnyElementAttribute.cs
- Mapping.cs
- SettingsProviderCollection.cs
- DetailsViewUpdatedEventArgs.cs
- TdsParserStaticMethods.cs
- ImmutableObjectAttribute.cs
- ObjectDataSourceSelectingEventArgs.cs
- BufferModeSettings.cs
- NumericPagerField.cs
- MappedMetaModel.cs
- AlgoModule.cs
- SimpleTextLine.cs
- SqlRemoveConstantOrderBy.cs
- CommandConverter.cs
- TraceXPathNavigator.cs
- ResourceReader.cs
- UpdateTranslator.cs
- ListItem.cs
- WebPartMinimizeVerb.cs
- TypedServiceChannelBuilder.cs
- FilterableAttribute.cs
- WaitHandleCannotBeOpenedException.cs
- CommonProperties.cs
- ResourceManagerWrapper.cs
- CodeSubDirectoriesCollection.cs
- HelpInfo.cs
- XmlNavigatorFilter.cs
- ObjectDataSourceFilteringEventArgs.cs
- HttpCookieCollection.cs
- CodeSubDirectory.cs
- TdsParserHelperClasses.cs
- AnimationLayer.cs
- TrueReadOnlyCollection.cs
- DoubleLinkList.cs
- SystemUnicastIPAddressInformation.cs
- DispatcherTimer.cs
- followingquery.cs
- VisualStyleElement.cs
- SoapWriter.cs
- BitmapScalingModeValidation.cs
- TextView.cs
- TextModifierScope.cs
- TextServicesProperty.cs
- UserThread.cs
- CustomAttribute.cs
- TouchPoint.cs
- GeometryModel3D.cs
- Int32Animation.cs
- TrackingExtract.cs
- SessionStateItemCollection.cs
- EditBehavior.cs
- UpdateException.cs
- ScrollPatternIdentifiers.cs
- Model3D.cs
- EntityCommandDefinition.cs
- ipaddressinformationcollection.cs
- MimeBasePart.cs
- SizeFConverter.cs
- MSAAEventDispatcher.cs
- TableCellsCollectionEditor.cs
- SoapCodeExporter.cs
- LocatorManager.cs
- TemplateBamlTreeBuilder.cs
- SemanticKeyElement.cs
- SetterBaseCollection.cs
- Soap12ProtocolImporter.cs
- FileAuthorizationModule.cs
- ComIntegrationManifestGenerator.cs
- CodePropertyReferenceExpression.cs
- PropertyTabAttribute.cs
- DataGridViewAutoSizeColumnsModeEventArgs.cs
- AnimationLayer.cs
- XmlSchemaSimpleContent.cs
- CapabilitiesSection.cs
- RTLAwareMessageBox.cs
- GenericWebPart.cs
- ReliableSessionElement.cs
- ChainOfDependencies.cs
- Drawing.cs
- LambdaCompiler.Binary.cs
- RangeEnumerable.cs
- ExtractCollection.cs
- EntityDataSourceDesignerHelper.cs
- CodeBlockBuilder.cs
- SynchronizationValidator.cs
- ReceiveActivityValidator.cs
- StylusEditingBehavior.cs
- UIElement.cs
- LinearGradientBrush.cs
- SystemParameters.cs
- ImageDrawing.cs
- SimpleWorkerRequest.cs
- processwaithandle.cs
- Quaternion.cs
- FileBasedResourceGroveler.cs
- TextBox.cs
- DataGridViewRowEventArgs.cs