Partilhar via

Como: Exportar WSDL personalizado

  • Artigo

Este tópico explica como exportar informações WSDL personalizadas. Para fazer isso, definiremos um novo atributo de código chamado WsdlDocumentationAttribute que adicionará informações personalizadas ao WSDL gerado pelo serviço.

Para exportar informações WSDL personalizadas

  1. Implemente a interface IWsdlExportExtension. Essa interface pode ser implementada em uma classe que implementa qualquer uma das seguintes interfaces: IOperationBehavior, IContractBehavior, ou IEndpointBehavior. Ele também pode ser implementado em uma classe derivada de BindingElement. Este exemplo implementa em uma classe de IWsdlExportExtension atributo que implementa o IContractBehavior.

  2. IWsdlExportExtension define dois métodos ExportEndpoint(WsdlExporter, WsdlEndpointConversionContext) e ExportContract(WsdlExporter, WsdlContractConversionContext). Esses métodos permitem que você modifique ou adicione (ou ambos, modifique e adicione) informações adicionais ao WsdlContractConversionContext. Este exemplo, no método, recupera uma coleção de objetos e, em ExportContract(WsdlExporter, WsdlContractConversionContext) seguida, itera através da OperationDescription coleção verificando se há um WsdlDocumentationAttributearquivo . Se um for encontrado, o texto associado ao atributo é extraído, um elemento summary é gerado e o elemento summary é adicionado ao DocumentationElement da operação.

    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);
            }
        }
    }
}

Exemplo

O exemplo de código a seguir mostra a implementação completa da WsdlDocumentationAttribute classe.

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;
    }
  }

Consulte também