Vorgehensweise: Exportieren von benutzerdefinierter WSDLHow to: Export Custom WSDL

Dieses Thema erklärt, wie benutzerdefinierte WSDL-Informationen exportiert werden.This topic explains how to export custom WSDL information. Hierfür muss ein neues Codeattribut namens WsdlDocumentationAttribute definiert werden, dass der von diesem Dienst generierten WSDL benutzerdefinierte Informationen hinzufügen wird.To do this we will define a new code attribute called WsdlDocumentationAttribute that will add custom information into the WSDL generated by the service.

Benutzerdefinierte WSDL-Informationen exportierenTo export custom WSDL information

  1. Implementieren Sie die IWsdlExportExtension-Schnittstelle.Implement the IWsdlExportExtension interface. Diese Schnittstelle kann auf einer Klasse implementiert werden, die eine der folgenden Schnittstellen implementiert: IOperationBehavior, IContractBehavior oder IEndpointBehavior.This interface can be implemented on a class that implements any of the following interfaces: IOperationBehavior, IContractBehavior, or IEndpointBehavior. Sie kann auch auf einer Klasse, die von BindingElement abgeleitet wird, implementiert werden.It can also be implemented on a class derived from BindingElement. In diesem Beispiel wird IWsdlExportExtension auf einer Attributklasse implementiert, die IContractBehavior implementiert.This sample implements IWsdlExportExtension on an attribute class that implements IContractBehavior.

  2. IWsdlExportExtension definiert zwei Methoden ExportEndpoint(WsdlExporter, WsdlEndpointConversionContext) und ExportContract(WsdlExporter, WsdlContractConversionContext).IWsdlExportExtension defines two methods ExportEndpoint(WsdlExporter, WsdlEndpointConversionContext) and ExportContract(WsdlExporter, WsdlContractConversionContext). Mithilfe dieser Methoden können Sie Informationen in WsdlContractConversionContext ändern oder zusätzliche Informationen hinzufügen (oder sowohl ändern als auch hinzufügen).These methods allow you to modify or add (or both modify and add) additional information into the WsdlContractConversionContext. Dieses Beispiel ruft in der Methode ExportContract(WsdlExporter, WsdlContractConversionContext) eine Sammlung von OperationDescription-Objekten auf und iteriert dann durch die Sammlung auf der Suche nach einem WsdlDocumentationAttribute.This sample, in the ExportContract(WsdlExporter, WsdlContractConversionContext) method, retrieves a collection of OperationDescription objects and then iterates through the collection checking for a WsdlDocumentationAttribute. Wenn eines gefunden wird, wird der mit dem Attribut verbundene Text extrahiert, es wird ein Zusammenfassungselement generiert, und das Zusammenfassungselement wird dem DocumentationElement des Vorgangs hinzugefügt.If one is found, the text associated with the attribute is extracted, a summary element is generated, and the summary element is added into the DocumentationElement of the operation.

            public void ExportContract(WsdlExporter exporter, WsdlContractConversionContext context)  
    {  
                Console.WriteLine("Inside ExportContract");  
    if (context.Contract != null)  
    {  
                    // Set the document element; if this is not done first, there is no XmlElement in the   
                    // DocumentElement property.  
                    context.WsdlPortType.Documentation = string.Empty;   
                    // Contract comments.  
                    XmlDocument owner = context.WsdlPortType.DocumentationElement.OwnerDocument;  
                    XmlElement summaryElement = Formatter.CreateSummaryElement(owner, this.Text);   
                    context.WsdlPortType.DocumentationElement.AppendChild(summaryElement);  
    
                    foreach (OperationDescription op in context.Contract.Operations)  
                    {  
                        Operation operation = context.GetOperation(op);  
                        object[] opAttrs = op.SyncMethod.GetCustomAttributes(typeof(WsdlDocumentationAttribute), false);  
                        if (opAttrs.Length == 1)  
                        {  
                            string opComment = ((WsdlDocumentationAttribute)opAttrs[0]).Text;  
    
                            // This.Text returns the string for the operation-level attributes.  
                            // Set the doc element; if this is not done first, there is no XmlElement in the   
                            // DocumentElement property.  
                            operation.Documentation = String.Empty;  
    
                            XmlDocument opOwner = operation.DocumentationElement.OwnerDocument;  
                            XmlElement newSummaryElement = Formatter.CreateSummaryElement(opOwner, opComment);  
                            operation.DocumentationElement.AppendChild(newSummaryElement);  
                        }  
                    }  
                }  
    

BeispielExample

Im folgenden Codebeispiel wird die komplette Implementierung der Klasse WsdlDocumentationAttribute veranschaulicht.The following code example shows the full implementation of the WsdlDocumentationAttribute class.

public class WsdlDocumentationAttribute : Attribute, IContractBehavior, IWsdlExportExtension  
{  
string text;  
       XmlElement customWsdlDocElement = null;  
public WsdlDocumentationAttribute(string text)  
{ this.text = text;}  

       public WsdlDocumentationAttribute(XmlElement wsdlDocElement)  
        { this.customWsdlDocElement = wsdlDocElement; }  

        public XmlElement WsdlDocElement  
        {  
            get { return this.customWsdlDocElement; }  
            set { this.customWsdlDocElement = value; }  
        }  
       public string Text  
{  
get { return this.text; }  
set { this.text = value; }  
}  

     public void ExportContract(WsdlExporter exporter, WsdlContractConversionContext context)  
{  
          Console.WriteLine("Inside ExportContract");  
if (context.Contract != null)  
{  
                // Set the document element; if this is not done first, there is no XmlElement in the   
                // DocumentElement property.  
                context.WsdlPortType.Documentation = string.Empty;   
                // Contract comments.  
                XmlDocument owner = context.WsdlPortType.DocumentationElement.OwnerDocument;  
                XmlElement summaryElement = Formatter.CreateSummaryElement(owner, this.Text);   
                context.WsdlPortType.DocumentationElement.AppendChild(summaryElement);  

                foreach (OperationDescription op in context.Contract.Operations)  
                {  
                    Operation operation = context.GetOperation(op);  
                    object[] opAttrs = op.SyncMethod.GetCustomAttributes(typeof(WsdlDocumentationAttribute), false);  
                    if (opAttrs.Length == 1)  
                    {  
                        string opComment = ((WsdlDocumentationAttribute)opAttrs[0]).Text;  

                        // This.Text returns the string for the operation-level attributes.  
                        // Set the document element; if this is not done first, there is no XmlElement in the   
                        // DocumentElement property.  
                        operation.Documentation = String.Empty;  

                        XmlDocument opOwner = operation.DocumentationElement.OwnerDocument;  
                        XmlElement newSummaryElement = Formatter.CreateSummaryElement(opOwner, opComment);  
                        operation.DocumentationElement.AppendChild(newSummaryElement);  
                    }  
                }  
            }  
        }  

public void ExportEndpoint(WsdlExporter exporter, WsdlEndpointConversionContext context)   
        {  
            Console.WriteLine("ExportEndpoint called.");  
        }  

        public void AddBindingParameters(ContractDescription description, ServiceEndpoint endpoint, BindingParameterCollection parameters)  
        { return; }  

        public void ApplyClientBehavior(ContractDescription description, ServiceEndpoint endpoint, ClientRuntime client)  
        { return; }  

        public void ApplyDispatchBehavior(ContractDescription description, ServiceEndpoint endpoint, DispatchRuntime dispatch)  
        { return; }  

        public void Validate(ContractDescription description, ServiceEndpoint endpoint) { return; }  
    }  

  public class Formatter  
  {  

#region Utility Functions  

    public static XmlElement CreateSummaryElement(XmlDocument owningDoc, string text)  
    {  
      XmlElement summaryElement = owningDoc.CreateElement("summary");  
      summaryElement.InnerText = text;  
      return summaryElement;  
    }  

public static CodeCommentStatementCollection FormatComments(string text)  
{  
      /*  
       * Note that in Visual C# the XML comment format absorbs a   
       * documentation element with a line break in the middle. This sample  
       * could take an XmlElement and create code comments in which   
       * the element never had a line break in it.  
      */  

      CodeCommentStatementCollection collection = new CodeCommentStatementCollection();  
collection.Add(new CodeCommentStatement("From WsdlDocumentation:", true));  
collection.Add(new CodeCommentStatement(String.Empty, true));  

foreach (string line in WordWrap(text, 80))  
{  
collection.Add(new CodeCommentStatement(line, true));  
}  

collection.Add(new CodeCommentStatement(String.Empty, true));  
return collection;  
}  

public static Collection<string> WordWrap(string text, int columnWidth)  
{  
Collection<string> lines = new Collection<string>();  
System.Text.StringBuilder builder = new System.Text.StringBuilder();  

string[] words = text.Split(' ');  
foreach (string word in words)  
{  
if ((builder.Length > 0) && ((builder.Length + word.Length + 1) > columnWidth))  
{  
lines.Add(builder.ToString());  
builder = new System.Text.StringBuilder();  
}  
builder.Append(word);  
builder.Append(' ');  
}  
lines.Add(builder.ToString());  

return lines;  
}  

#endregion    

    public static XmlElement CreateReturnsElement(XmlDocument owner, string p)  
    {  
      XmlElement returnsElement = owner.CreateElement("returns");  
      returnsElement.InnerText = p;  
      return returnsElement;  
    }  
  }  

Siehe auchSee Also

MetadatenMetadata