Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / System / data / design / MethodSignatureGenerator.cs / 1 / MethodSignatureGenerator.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All Rights Reserved. // Information Contained Herein is Proprietary and Confidential. // //----------------------------------------------------------------------------- namespace System.Data.Design { using System; using System.CodeDom; using System.CodeDom.Compiler; using System.Collections; using System.ComponentModel; using System.Data; using System.Data.SqlClient; using System.Data.SqlTypes; using System.IO; using System.Diagnostics; public class MethodSignatureGenerator { private static readonly char endOfStatement = ';'; private CodeDomProvider codeProvider = null; private DbSource methodSource = null; private Type containerParameterType = typeof(System.Data.DataSet); private bool pagingMethod = false; private bool getMethod = false; private ParameterGenerationOption parameterOption = ParameterGenerationOption.ClrTypes; private string tableClassName = null; private string datasetClassName = null; private DesignTable designTable = null; public CodeDomProvider CodeProvider { get { return this.codeProvider; } set { this.codeProvider = value; } } public Type ContainerParameterType { get { return this.containerParameterType; } set { if(value != typeof(System.Data.DataSet) && value != typeof(System.Data.DataTable)) { throw new InternalException("Unsupported container parameter type."); } this.containerParameterType = value; } } public bool IsGetMethod { get { return this.getMethod; } set { this.getMethod = value; } } public bool PagingMethod { get { return this.pagingMethod; } set { this.pagingMethod = value; } } public ParameterGenerationOption ParameterOption { get { return this.parameterOption; } set { this.parameterOption = value; } } public string TableClassName { get { return this.tableClassName; } set { this.tableClassName = value; } } public string DataSetClassName { get { return this.datasetClassName; } set { this.datasetClassName = value; } } public void SetDesignTableContent(string designTableContent) { DesignDataSource dataSource = new DesignDataSource(); StringReader stringReader = new StringReader(designTableContent); dataSource.ReadXmlSchema(stringReader); if (dataSource.DesignTables == null || dataSource.DesignTables.Count != 1) { throw new InternalException("Unexpected number of sources in deserialized DataSource."); } IEnumerator e = dataSource.DesignTables.GetEnumerator(); e.MoveNext(); this.designTable = (DesignTable)e.Current; } public void SetMethodSourceContent(string methodSourceContent) { DesignDataSource dataSource = new DesignDataSource(); StringReader stringReader = new StringReader(methodSourceContent); dataSource.ReadXmlSchema(stringReader); if (dataSource.Sources == null || dataSource.Sources.Count != 1) { throw new InternalException("Unexpected number of sources in deserialized DataSource."); } IEnumerator e = dataSource.Sources.GetEnumerator(); e.MoveNext(); this.methodSource = (DbSource)e.Current; } public string GenerateMethodSignature() { if(this.codeProvider == null) { throw new ArgumentException("codeProvider"); } if(this.methodSource == null) { throw new ArgumentException("MethodSource"); } string methodName = null; CodeTypeDeclaration methodWrapper = this.GenerateMethodWrapper(out methodName); StringWriter writer = new StringWriter(System.Globalization.CultureInfo.CurrentCulture); codeProvider.GenerateCodeFromType(methodWrapper, writer, null); string wrapperCode = writer.GetStringBuilder().ToString(); string[] codeLines = wrapperCode.Split(Environment.NewLine.ToCharArray()); foreach(string line in codeLines) { if(line.Contains(methodName)) { return line.Trim().TrimEnd(endOfStatement); } } return null; } private CodeTypeDeclaration GenerateMethodWrapper(out string methodName) { CodeTypeDeclaration wrapper = new CodeTypeDeclaration("Wrapper"); wrapper.IsInterface = true; CodeMemberMethod method = GenerateMethod(); wrapper.Members.Add(method); methodName = method.Name; return wrapper; } public CodeMemberMethod GenerateMethod() { if(this.codeProvider == null) { throw new ArgumentException("codeProvider"); } if(this.methodSource == null) { throw new ArgumentException("MethodSource"); } QueryGeneratorBase queryGenerator = null; if(this.methodSource.QueryType == QueryType.Rowset && this.methodSource.CommandOperation == CommandOperation.Select) { queryGenerator = new QueryGenerator(null); queryGenerator.ContainerParameterTypeName = this.GetParameterTypeName(); queryGenerator.ContainerParameterName = this.GetParameterName(); queryGenerator.ContainerParameterType = this.containerParameterType; } else { queryGenerator = new FunctionGenerator(null); } queryGenerator.DeclarationOnly = true; queryGenerator.CodeProvider = this.codeProvider; queryGenerator.MethodSource = this.methodSource; queryGenerator.MethodName = this.GetMethodName(); queryGenerator.ParameterOption = this.parameterOption; queryGenerator.GeneratePagingMethod = this.pagingMethod; queryGenerator.GenerateGetMethod = this.getMethod; CodeMemberMethod method = queryGenerator.Generate(); return method; } public CodeTypeDeclaration GenerateUpdatingMethods() { if (this.designTable == null) { throw new InternalException("DesignTable should not be null."); } if (StringUtil.Empty(this.datasetClassName)) { throw new InternalException("DatasetClassName should not be empty."); } CodeTypeDeclaration wrapper = new CodeTypeDeclaration("wrapper"); wrapper.IsInterface = true; QueryHandler queryHandler = new QueryHandler( this.codeProvider, this.designTable ); queryHandler.DeclarationsOnly = true; queryHandler.AddUpdateQueriesToDataComponent( wrapper, this.datasetClassName, this.codeProvider ); return wrapper; } private string GetParameterName() { if(this.containerParameterType == typeof(System.Data.DataTable)) { return QueryHandler.tableParameterName; } else { return QueryHandler.dataSetParameterName; } } private string GetParameterTypeName() { if (StringUtil.Empty(this.datasetClassName)) { throw new InternalException("DatasetClassName should not be empty."); } if (this.containerParameterType == typeof(System.Data.DataTable)) { if (StringUtil.Empty(this.tableClassName)) { throw new InternalException("TableClassName should not be empty."); } return CodeGenHelper.GetTypeName(this.codeProvider, this.datasetClassName, this.tableClassName); } else { return this.datasetClassName; } } private string GetMethodName() { if(this.methodSource.QueryType == QueryType.Rowset) { if(this.getMethod) { if(this.pagingMethod) { // GetPage method if(methodSource.GeneratorGetMethodNameForPaging != null) { return methodSource.GeneratorGetMethodNameForPaging; } else { return methodSource.GetMethodName + DataComponentNameHandler.PagingMethodSuffix; } } else { // Get method if(methodSource.GeneratorGetMethodName != null) { return methodSource.GeneratorGetMethodName; } else { return methodSource.GetMethodName; } } } else { if(this.pagingMethod) { // FillPage method if(methodSource.GeneratorSourceNameForPaging != null) { return methodSource.GeneratorSourceNameForPaging; } else { return methodSource.Name + DataComponentNameHandler.PagingMethodSuffix; } } else { // Fill method if(methodSource.GeneratorSourceName != null) { return methodSource.GeneratorSourceName; } else { return methodSource.Name; } } } } else { if(methodSource.GeneratorSourceName != null) { return methodSource.GeneratorSourceName; } else { return methodSource.Name; } } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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