Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / ndp / fx / src / DLinq / Dlinq / SqlClient / Query / SqlIdentifier.cs / 1 / SqlIdentifier.cs
using System; using System.Collections.Generic; using System.Data; using System.Data.Linq.Mapping; using System.Data.Linq.Provider; using System.Data.SqlClient; using System.Globalization; using System.Linq; using System.Text; using System.Text.RegularExpressions; namespace System.Data.Linq.SqlClient { internal static class SqlIdentifier { private static SqlCommandBuilder builder = new SqlCommandBuilder(); const string ParameterPrefix = "@"; const string QuotePrefix = "["; const string QuoteSuffix = "]"; const string SchemaSeparator = "."; const char SchemaSeparatorChar = '.'; private static bool IsQuoted(string s) { if (s == null) { throw Error.ArgumentNull("s"); } if (s.Length < 2) { return false; } return s.StartsWith(QuotePrefix, StringComparison.Ordinal) && s.EndsWith(QuoteSuffix, StringComparison.Ordinal); } // This is MSSQL-specific quoting. // If the string begins and ends with [ and ], it will be assumed to already be quoted. // Otherwise periods are assumed to be namespace delimiters, and the string is split on each. // Each string from the split is then check to see if it is already quoted, and if // not, it is replaced with the result of SqlCommandBuilder.QuoteIdentifier. // Then the set of strings is rejoined with periods. internal static string QuoteCompoundIdentifier(string s) { if (s == null) { throw Error.ArgumentNull("s"); } // if it starts with @, then return unprocessed if (s.StartsWith(ParameterPrefix, StringComparison.Ordinal)) { return s; } else if (IsQuoted(s)) { return s; } else if (!s.StartsWith(QuotePrefix, StringComparison.Ordinal) && s.EndsWith(QuoteSuffix, StringComparison.Ordinal)) { //A.[B] => [A].[B] int splitPosition = s.IndexOf(SchemaSeparatorChar); if (splitPosition < 0){ //no . in the string return builder.QuoteIdentifier(s); } string left = s.Substring(0, splitPosition); string right = s.Substring(splitPosition + 1, s.Length - splitPosition - 1); if (!IsQuoted(right)) { right = builder.QuoteIdentifier(right); } return String.Concat(QuoteCompoundIdentifier(left), SchemaSeparatorChar + right); } else if (s.StartsWith(QuotePrefix, StringComparison.Ordinal) && !s.EndsWith(QuoteSuffix, StringComparison.Ordinal)) { //[A].B => [A].[B] int splitPosition = s.LastIndexOf(SchemaSeparatorChar); if (splitPosition < 0){ //no . in the string return builder.QuoteIdentifier(s); } string left = s.Substring(0, splitPosition); if (!IsQuoted(left)) { left = builder.QuoteIdentifier(left); } string right = s.Substring(splitPosition + 1, s.Length - splitPosition - 1); return String.Concat(left + SchemaSeparatorChar, QuoteCompoundIdentifier(right)); } else { int splitPosition = s.IndexOf(SchemaSeparatorChar); if (splitPosition < 0) { //no . in the string //A => [A] return builder.QuoteIdentifier(s); } string left = s.Substring(0, splitPosition); string right = s.Substring(splitPosition + 1, s.Length - splitPosition - 1); return String.Concat(QuoteCompoundIdentifier(left) + SchemaSeparatorChar, QuoteCompoundIdentifier(right)); } } // This is MSSQL-specific quoting. // This is the same as above, but it doesn't consider anything compound. internal static string QuoteIdentifier(string s) { if (s == null) { throw Error.ArgumentNull("s"); } // if it starts with @, then return unprocessed if (s.StartsWith(ParameterPrefix, StringComparison.Ordinal)) { return s; } else if (IsQuoted(s)) { return s; } else { return builder.QuoteIdentifier(s); } } // turns "[ABC].[PQR].[XYZ]" into {"[ABC]", "[PQR]", "[XYZ]"} internal static IEnumerableGetCompoundIdentifierParts(string s) { if (s == null) { throw Error.ArgumentNull("s"); } // can't do this to parameters if (s.StartsWith(ParameterPrefix, StringComparison.Ordinal)) { throw Error.ArgumentWrongValue("s"); } string quotedS = QuoteCompoundIdentifier(s); string pattern = @"^(? \[([^\]]|\]\])*\])(\.(? \[([^\]]|\]\])*\]))*$"; // This pattern matches "."-delimited quoted SQL identifiers. Here's how: // // 1. It is wrapped in "^" and "$", which match the begining and end of text, so it will match // only the entire text and not any sub-part. // 2. The group "(? \[([^\]]|\]\])*\])" captures a single quoted segment of the text. // It's a literal "[" followed by any number of non-"]" characters or "]]" strings, followed // by a literal "]". The "? " bit names the capture so we can refer to it. // 3. After the first component, we will allow any number of groups which consist of a literal // "." followed by a component (and the component part is a repeat of the part described in 2). Match m = Regex.Match(quotedS, pattern); if (!m.Success) { throw Error.ArgumentWrongValue("s"); } foreach (Capture cap in m.Groups["component"].Captures) { yield return cap.Value; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. using System; using System.Collections.Generic; using System.Data; using System.Data.Linq.Mapping; using System.Data.Linq.Provider; using System.Data.SqlClient; using System.Globalization; using System.Linq; using System.Text; using System.Text.RegularExpressions; namespace System.Data.Linq.SqlClient { internal static class SqlIdentifier { private static SqlCommandBuilder builder = new SqlCommandBuilder(); const string ParameterPrefix = "@"; const string QuotePrefix = "["; const string QuoteSuffix = "]"; const string SchemaSeparator = "."; const char SchemaSeparatorChar = '.'; private static bool IsQuoted(string s) { if (s == null) { throw Error.ArgumentNull("s"); } if (s.Length < 2) { return false; } return s.StartsWith(QuotePrefix, StringComparison.Ordinal) && s.EndsWith(QuoteSuffix, StringComparison.Ordinal); } // This is MSSQL-specific quoting. // If the string begins and ends with [ and ], it will be assumed to already be quoted. // Otherwise periods are assumed to be namespace delimiters, and the string is split on each. // Each string from the split is then check to see if it is already quoted, and if // not, it is replaced with the result of SqlCommandBuilder.QuoteIdentifier. // Then the set of strings is rejoined with periods. internal static string QuoteCompoundIdentifier(string s) { if (s == null) { throw Error.ArgumentNull("s"); } // if it starts with @, then return unprocessed if (s.StartsWith(ParameterPrefix, StringComparison.Ordinal)) { return s; } else if (IsQuoted(s)) { return s; } else if (!s.StartsWith(QuotePrefix, StringComparison.Ordinal) && s.EndsWith(QuoteSuffix, StringComparison.Ordinal)) { //A.[B] => [A].[B] int splitPosition = s.IndexOf(SchemaSeparatorChar); if (splitPosition < 0){ //no . in the string return builder.QuoteIdentifier(s); } string left = s.Substring(0, splitPosition); string right = s.Substring(splitPosition + 1, s.Length - splitPosition - 1); if (!IsQuoted(right)) { right = builder.QuoteIdentifier(right); } return String.Concat(QuoteCompoundIdentifier(left), SchemaSeparatorChar + right); } else if (s.StartsWith(QuotePrefix, StringComparison.Ordinal) && !s.EndsWith(QuoteSuffix, StringComparison.Ordinal)) { //[A].B => [A].[B] int splitPosition = s.LastIndexOf(SchemaSeparatorChar); if (splitPosition < 0){ //no . in the string return builder.QuoteIdentifier(s); } string left = s.Substring(0, splitPosition); if (!IsQuoted(left)) { left = builder.QuoteIdentifier(left); } string right = s.Substring(splitPosition + 1, s.Length - splitPosition - 1); return String.Concat(left + SchemaSeparatorChar, QuoteCompoundIdentifier(right)); } else { int splitPosition = s.IndexOf(SchemaSeparatorChar); if (splitPosition < 0) { //no . in the string //A => [A] return builder.QuoteIdentifier(s); } string left = s.Substring(0, splitPosition); string right = s.Substring(splitPosition + 1, s.Length - splitPosition - 1); return String.Concat(QuoteCompoundIdentifier(left) + SchemaSeparatorChar, QuoteCompoundIdentifier(right)); } } // This is MSSQL-specific quoting. // This is the same as above, but it doesn't consider anything compound. internal static string QuoteIdentifier(string s) { if (s == null) { throw Error.ArgumentNull("s"); } // if it starts with @, then return unprocessed if (s.StartsWith(ParameterPrefix, StringComparison.Ordinal)) { return s; } else if (IsQuoted(s)) { return s; } else { return builder.QuoteIdentifier(s); } } // turns "[ABC].[PQR].[XYZ]" into {"[ABC]", "[PQR]", "[XYZ]"} internal static IEnumerable GetCompoundIdentifierParts(string s) { if (s == null) { throw Error.ArgumentNull("s"); } // can't do this to parameters if (s.StartsWith(ParameterPrefix, StringComparison.Ordinal)) { throw Error.ArgumentWrongValue("s"); } string quotedS = QuoteCompoundIdentifier(s); string pattern = @"^(? \[([^\]]|\]\])*\])(\.(? \[([^\]]|\]\])*\]))*$"; // This pattern matches "."-delimited quoted SQL identifiers. Here's how: // // 1. It is wrapped in "^" and "$", which match the begining and end of text, so it will match // only the entire text and not any sub-part. // 2. The group "(? \[([^\]]|\]\])*\])" captures a single quoted segment of the text. // It's a literal "[" followed by any number of non-"]" characters or "]]" strings, followed // by a literal "]". The "? " bit names the capture so we can refer to it. // 3. After the first component, we will allow any number of groups which consist of a literal // "." followed by a component (and the component part is a repeat of the part described in 2). Match m = Regex.Match(quotedS, pattern); if (!m.Success) { throw Error.ArgumentWrongValue("s"); } foreach (Capture cap in m.Groups["component"].Captures) { yield return cap.Value; } } } } // 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
- DomainLiteralReader.cs
- DeploymentSection.cs
- Baml2006ReaderSettings.cs
- FromRequest.cs
- NetTcpSection.cs
- CategoryState.cs
- MultiAsyncResult.cs
- FileRecordSequenceHelper.cs
- coordinator.cs
- CultureInfoConverter.cs
- WebPartPersonalization.cs
- CompositeScriptReference.cs
- Light.cs
- Rule.cs
- DropShadowEffect.cs
- DocumentPageTextView.cs
- WorkflowControlEndpoint.cs
- RealProxy.cs
- StylusDevice.cs
- SkipQueryOptionExpression.cs
- CompositeCollectionView.cs
- DrawListViewSubItemEventArgs.cs
- SmiEventSink.cs
- VisualStyleRenderer.cs
- MemoryMappedView.cs
- RootBuilder.cs
- StsCommunicationException.cs
- TimeSpanMinutesOrInfiniteConverter.cs
- PartitionResolver.cs
- MetaData.cs
- XmlObjectSerializer.cs
- JsonQNameDataContract.cs
- IndentedWriter.cs
- GridViewColumnCollection.cs
- DoubleAnimationBase.cs
- SQLDouble.cs
- unsafenativemethodsother.cs
- Semaphore.cs
- GeneralTransform3DCollection.cs
- ToolStripRendererSwitcher.cs
- MethodToken.cs
- EventMappingSettingsCollection.cs
- cache.cs
- OperatingSystem.cs
- TextSpan.cs
- QilIterator.cs
- EndEvent.cs
- StickyNoteContentControl.cs
- MatrixCamera.cs
- AttachedAnnotation.cs
- CodeNamespaceImportCollection.cs
- MenuItemBindingCollection.cs
- InitiatorSessionSymmetricMessageSecurityProtocol.cs
- UDPClient.cs
- WindowsSolidBrush.cs
- ReferencedAssembly.cs
- ValidationResult.cs
- SettingsBase.cs
- XmlDocument.cs
- Byte.cs
- TcpClientCredentialType.cs
- DateTimeOffset.cs
- ProfileEventArgs.cs
- ListenerElementsCollection.cs
- ProfileService.cs
- DbProviderFactoriesConfigurationHandler.cs
- AppendHelper.cs
- SchemaConstraints.cs
- XmlDataSourceNodeDescriptor.cs
- URLMembershipCondition.cs
- Error.cs
- Size3DValueSerializer.cs
- GreenMethods.cs
- SettingsProviderCollection.cs
- PolicyUnit.cs
- FileRecordSequence.cs
- IPAddressCollection.cs
- ValueTypeIndexerReference.cs
- IntranetCredentialPolicy.cs
- Rotation3DAnimation.cs
- ResourceManagerWrapper.cs
- TypeSystem.cs
- CodeCatchClause.cs
- OverrideMode.cs
- IconBitmapDecoder.cs
- Point3DKeyFrameCollection.cs
- ComPlusContractBehavior.cs
- SqlDataSourceConnectionPanel.cs
- TargetControlTypeAttribute.cs
- RIPEMD160Managed.cs
- PropertyValidationContext.cs
- DataGridViewAddColumnDialog.cs
- RawStylusInputReport.cs
- CalendarDay.cs
- EncryptedXml.cs
- RoutingBehavior.cs
- InstanceLockTracking.cs
- DocumentXPathNavigator.cs
- SpotLight.cs
- DrawTreeNodeEventArgs.cs