Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx35 / System.ServiceModel.Web / System / ServiceModel / Dispatcher / QueryStringConverter.cs / 1305376 / QueryStringConverter.cs
//------------------------------------------------------------ // Copyright (c) Microsoft Corporation. All rights reserved. //----------------------------------------------------------- #pragma warning disable 1634, 1691 namespace System.ServiceModel.Dispatcher { using System; using System.Collections; using System.ComponentModel; using System.Diagnostics; using System.Diagnostics.CodeAnalysis; using System.Globalization; using System.Reflection; using System.Runtime; using System.Runtime.InteropServices; using System.ServiceModel; using System.Xml; // Thread Safety: This class is thread safe public class QueryStringConverter { Hashtable defaultSupportedQueryStringTypes; // the cache does not have a quota since it is per endpoint and is // bounded by the number of types in the contract at the endpoint Hashtable typeConverterCache; public QueryStringConverter() { this.defaultSupportedQueryStringTypes = new Hashtable(); this.defaultSupportedQueryStringTypes.Add(typeof(Byte), null); this.defaultSupportedQueryStringTypes.Add(typeof(SByte), null); this.defaultSupportedQueryStringTypes.Add(typeof(Int16), null); this.defaultSupportedQueryStringTypes.Add(typeof(Int32), null); this.defaultSupportedQueryStringTypes.Add(typeof(Int64), null); this.defaultSupportedQueryStringTypes.Add(typeof(UInt16), null); this.defaultSupportedQueryStringTypes.Add(typeof(UInt32), null); this.defaultSupportedQueryStringTypes.Add(typeof(UInt64), null); this.defaultSupportedQueryStringTypes.Add(typeof(Single), null); this.defaultSupportedQueryStringTypes.Add(typeof(Double), null); this.defaultSupportedQueryStringTypes.Add(typeof(Boolean), null); this.defaultSupportedQueryStringTypes.Add(typeof(Char), null); this.defaultSupportedQueryStringTypes.Add(typeof(Decimal), null); this.defaultSupportedQueryStringTypes.Add(typeof(String), null); this.defaultSupportedQueryStringTypes.Add(typeof(Object), null); this.defaultSupportedQueryStringTypes.Add(typeof(DateTime), null); this.defaultSupportedQueryStringTypes.Add(typeof(TimeSpan), null); this.defaultSupportedQueryStringTypes.Add(typeof(byte[]), null); this.defaultSupportedQueryStringTypes.Add(typeof(Guid), null); this.defaultSupportedQueryStringTypes.Add(typeof(Uri), null); this.defaultSupportedQueryStringTypes.Add(typeof(DateTimeOffset), null); this.typeConverterCache = new Hashtable(); } public virtual bool CanConvert(Type type) { if (this.defaultSupportedQueryStringTypes.ContainsKey(type)) { return true; } // otherwise check if its an enum if (typeof(Enum).IsAssignableFrom(type)) { return true; } // check if there's a typeconverter defined on the type return (GetStringConverter(type) != null); } public virtual object ConvertStringToValue(string parameter, Type parameterType) { if (parameterType == null) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("parameterType"); } switch (Type.GetTypeCode(parameterType)) { case TypeCode.Byte: return parameter == null ? default(Byte) : XmlConvert.ToByte(parameter); case TypeCode.SByte: return parameter == null ? default(SByte) : XmlConvert.ToSByte(parameter); case TypeCode.Int16: return parameter == null ? default(Int16) : XmlConvert.ToInt16(parameter); case TypeCode.Int32: { if (typeof(Enum).IsAssignableFrom(parameterType)) { return Enum.Parse(parameterType, parameter, true); } else { return parameter == null ? default(Int32) : XmlConvert.ToInt32(parameter); } } case TypeCode.Int64: return parameter == null ? default(Int64) : XmlConvert.ToInt64(parameter); case TypeCode.UInt16: return parameter == null ? default(UInt16) : XmlConvert.ToUInt16(parameter); case TypeCode.UInt32: return parameter == null ? default(UInt32) : XmlConvert.ToUInt32(parameter); case TypeCode.UInt64: return parameter == null ? default(UInt64) : XmlConvert.ToUInt64(parameter); case TypeCode.Single: return parameter == null ? default(Single) : XmlConvert.ToSingle(parameter); case TypeCode.Double: return parameter == null ? default(Double) : XmlConvert.ToDouble(parameter); case TypeCode.Char: return parameter == null ? default(Char) : XmlConvert.ToChar(parameter); case TypeCode.Decimal: return parameter == null ? default(Decimal) : XmlConvert.ToDecimal(parameter); case TypeCode.Boolean: return parameter == null ? default(Boolean) : Convert.ToBoolean(parameter, CultureInfo.InvariantCulture); case TypeCode.String: return parameter; case TypeCode.DateTime: return parameter == null ? default(DateTime) : DateTime.Parse(parameter, CultureInfo.InvariantCulture, DateTimeStyles.RoundtripKind); default: { if (parameterType == typeof(TimeSpan)) { // support the XML as well as default way of representing timespans TimeSpan result; if (!TimeSpan.TryParse(parameter, out result)) { result = parameter == null ? default(TimeSpan) : XmlConvert.ToTimeSpan(parameter); } return result; } else if (parameterType == typeof(Guid)) { return parameter == null ? default(Guid) : XmlConvert.ToGuid(parameter); } else if (parameterType == typeof(DateTimeOffset)) { return (parameter == null) ? default(DateTimeOffset) : DateTimeOffset.Parse(parameter, CultureInfo.InvariantCulture, DateTimeStyles.RoundtripKind | DateTimeStyles.AllowWhiteSpaces); } else if (parameterType == typeof(byte[])) { return (!string.IsNullOrEmpty(parameter)) ? Convert.FromBase64String(parameter) : new byte[] { }; } else if (parameterType == typeof(Uri)) { return (!string.IsNullOrEmpty(parameter)) ? new Uri(parameter, UriKind.RelativeOrAbsolute) : null; } else if (parameterType == typeof(object)) { return parameter; } else { TypeConverter stringConverter = GetStringConverter(parameterType); if (stringConverter == null) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException( SR2.GetString( SR2.TypeNotSupportedByQueryStringConverter, parameterType.ToString(), this.GetType().Name))); } return stringConverter.ConvertFromInvariantString(parameter); } } } } public virtual string ConvertValueToString(object parameter, Type parameterType) { if (parameterType == null) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("parameterType"); } if (parameterType.IsValueType && parameter == null) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("parameter"); } switch (Type.GetTypeCode(parameterType)) { case TypeCode.Byte: return XmlConvert.ToString((Byte) parameter); case TypeCode.SByte: return XmlConvert.ToString((SByte) parameter); case TypeCode.Int16: return XmlConvert.ToString((Int16) parameter); case TypeCode.Int32: { if (typeof(Enum).IsAssignableFrom(parameterType)) { return Enum.Format(parameterType, parameter, "G"); } else { return XmlConvert.ToString((int) parameter); } } case TypeCode.Int64: return XmlConvert.ToString((Int64) parameter); case TypeCode.UInt16: return XmlConvert.ToString((UInt16) parameter); case TypeCode.UInt32: return XmlConvert.ToString((uint) parameter); case TypeCode.UInt64: return XmlConvert.ToString((UInt64) parameter); case TypeCode.Single: return XmlConvert.ToString((Single) parameter); case TypeCode.Double: return XmlConvert.ToString((double) parameter); case TypeCode.Char: return XmlConvert.ToString((char) parameter); case TypeCode.Decimal: return XmlConvert.ToString((decimal) parameter); case TypeCode.Boolean: return XmlConvert.ToString((bool) parameter); case TypeCode.String: return (string) parameter; case TypeCode.DateTime: return XmlConvert.ToString((DateTime) parameter, XmlDateTimeSerializationMode.RoundtripKind); default: { if (parameterType == typeof(TimeSpan)) { return XmlConvert.ToString((TimeSpan) parameter); } else if (parameterType == typeof(Guid)) { return XmlConvert.ToString((Guid) parameter); } else if (parameterType == typeof(DateTimeOffset)) { return XmlConvert.ToString((DateTimeOffset) parameter); } else if (parameterType == typeof(byte[])) { return (parameter != null) ? Convert.ToBase64String((byte[]) parameter, Base64FormattingOptions.None) : null; } else if (parameterType == typeof(Uri) || parameterType == typeof(object)) { // URI or object return (parameter != null) ? Convert.ToString(parameter, CultureInfo.InvariantCulture) : null; } else { TypeConverter stringConverter = GetStringConverter(parameterType); if (stringConverter == null) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException( SR2.GetString( SR2.TypeNotSupportedByQueryStringConverter, parameterType.ToString(), this.GetType().Name))); } else { return stringConverter.ConvertToInvariantString(parameter); } } } } } // hash table is safe for multiple readers single writer [SuppressMessage("Reliability", "Reliability104:CaughtAndHandledExceptionsRule", Justification = "The exception is traced in the finally clause")] TypeConverter GetStringConverter(Type parameterType) { if (this.typeConverterCache.ContainsKey(parameterType)) { return (TypeConverter) this.typeConverterCache[parameterType]; } TypeConverterAttribute[] typeConverterAttrs = parameterType.GetCustomAttributes(typeof(TypeConverterAttribute), true) as TypeConverterAttribute[]; if (typeConverterAttrs != null) { foreach (TypeConverterAttribute converterAttr in typeConverterAttrs) { Type converterType = Type.GetType(converterAttr.ConverterTypeName, false, true); if (converterType != null) { TypeConverter converter = null; Exception handledException = null; try { converter = (TypeConverter) Activator.CreateInstance(converterType); } catch (TargetInvocationException e) { handledException = e; } catch (MemberAccessException e) { handledException = e; } catch (TypeLoadException e) { handledException = e; } catch (COMException e) { handledException = e; } catch (InvalidComObjectException e) { handledException = e; } finally { if (handledException != null) { if (Fx.IsFatal(handledException)) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(handledException); } if (DiagnosticUtility.ShouldTraceWarning) { DiagnosticUtility.ExceptionUtility.TraceHandledException(handledException, TraceEventType.Warning); } } } if (converter == null) { continue; } if (converter.CanConvertTo(typeof(string)) && converter.CanConvertFrom(typeof(string))) { this.typeConverterCache.Add(parameterType, converter); return converter; } } } } return null; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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