Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataWeb / Server / System / Data / Services / Providers / ServiceOperation.cs / 1305376 / ServiceOperation.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // //// Provides a type to represent custom operations on services. // // // @owner [....] //--------------------------------------------------------------------- namespace System.Data.Services.Providers { using System; using System.Collections.Generic; using System.Collections.ObjectModel; using System.Diagnostics; ///Use this class to represent a custom service operation. [DebuggerVisualizer("ServiceOperation={Name}")] public class ServiceOperation { ///Protocol (for example HTTP) method the service operation responds to. private readonly string method; ///In-order parameters for this operation. private readonly ReadOnlyCollectionparameters; /// Kind of result expected from this operation. private readonly ServiceOperationResultKind resultKind; ///Type of element of the method result. private readonly ResourceType resultType; ///Empty parameter collection. private static ReadOnlyCollectionemptyParameterCollection = new ReadOnlyCollection (new ServiceOperationParameter[0]); /// MIME type specified on primitive results, possibly null. private string mimeType; ///Entity set from which entities are read, if applicable. private ResourceSet resourceSet; ///name of the service operation. private string name; ///Is true, if the service operation is set to readonly i.e. fully initialized and validated. No more changes can be made, /// after the service operation is set to readonly. private bool isReadOnly; ////// Initializes a new /// name of the service operation. /// Kind of result expected from this operation. /// Type of element of the method result. /// EntitySet of the result expected from this operation. /// Protocol (for example HTTP) method the service operation responds to. /// In-order parameters for this operation. public ServiceOperation( string name, ServiceOperationResultKind resultKind, ResourceType resultType, ResourceSet resultSet, string method, IEnumerableinstance. /// parameters) { WebUtil.CheckStringArgumentNull(name, "name"); WebUtil.CheckServiceOperationResultKind(resultKind, "resultKind"); WebUtil.CheckStringArgumentNull(method, "method"); if ((resultKind == ServiceOperationResultKind.Void && resultType != null) || (resultKind != ServiceOperationResultKind.Void && resultType == null)) { throw new ArgumentException(Strings.ServiceOperation_ResultTypeAndKindMustMatch("resultKind", "resultType", ServiceOperationResultKind.Void)); } if ((resultType == null || resultType.ResourceTypeKind != ResourceTypeKind.EntityType) && resultSet != null) { throw new ArgumentException(Strings.ServiceOperation_ResultSetMustBeNull("resultSet", "resultType")); } if (resultType != null && resultType.ResourceTypeKind == ResourceTypeKind.EntityType && (resultSet == null || !resultSet.ResourceType.IsAssignableFrom(resultType))) { throw new ArgumentException(Strings.ServiceOperation_ResultTypeAndResultSetMustMatch("resultType", "resultSet")); } if (method != XmlConstants.HttpMethodGet && method != XmlConstants.HttpMethodPost) { throw new ArgumentException(Strings.ServiceOperation_NotSupportedProtocolMethod(method, name)); } this.name = name; this.resultKind = resultKind; this.resultType = resultType; this.resourceSet = resultSet; this.method = method; if (parameters == null) { this.parameters = ServiceOperation.emptyParameterCollection; } else { this.parameters = new ReadOnlyCollection (new List (parameters)); HashSet paramNames = new HashSet (StringComparer.Ordinal); foreach (ServiceOperationParameter p in this.parameters) { if (!paramNames.Add(p.Name)) { throw new ArgumentException(Strings.ServiceOperation_DuplicateParameterName(p.Name), "parameters"); } } } } /// Protocol (for example HTTP) method the service operation responds to. public string Method { get { return this.method; } } ///MIME type specified on primitive results, possibly null. public string MimeType { get { return this.mimeType; } set { this.ThrowIfSealed(); if (String.IsNullOrEmpty(value)) { throw new InvalidOperationException(Strings.ServiceOperation_MimeTypeCannotBeEmpty(this.Name)); } if (!WebUtil.IsValidMimeType(value)) { throw new InvalidOperationException(Strings.ServiceOperation_MimeTypeNotValid(value, this.Name)); } this.mimeType = value; } } ///Name of the service operation. public string Name { get { return this.name; } } ///Returns all the parameters for the given service operations./// public ReadOnlyCollectionParameters { get { return this.parameters; } } /// Kind of result expected from this operation. public ServiceOperationResultKind ResultKind { get { return this.resultKind; } } ///Element of result type. ////// Note that if the method returns an IEnumerable<string>, /// this property will be typeof(string). /// public ResourceType ResultType { get { return this.resultType; } } ////// PlaceHolder to hold custom state information about service operation. /// public object CustomState { get; set; } ////// Returns true, if this service operation has been set to read only. Otherwise returns false. /// public bool IsReadOnly { get { return this.isReadOnly; } } ///Entity set from which entities are read (possibly null). public ResourceSet ResourceSet { get { return this.resourceSet; } } ////// Set this service operation to readonly. /// public void SetReadOnly() { if (this.isReadOnly) { return; } foreach (ServiceOperationParameter parameter in this.Parameters) { parameter.SetReadOnly(); } this.isReadOnly = true; } ////// Throws an InvalidOperationException if this service operation is already set to readonly. /// internal void ThrowIfSealed() { if (this.isReadOnly) { throw new InvalidOperationException(Strings.ServiceOperation_Sealed(this.Name)); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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