JAX-WS 2.0 Beta
Annotations

Last Modified: 11/3/05

Contents

1. Overview
2. JSR 181 (Web Services Metadata) Annotations
    2.1 javax.jws.WebService
    2.2 javax.jws.WebMethod
    2.3 javax.jws.OneWay
    2.4 javax.jws.WebParam
    2.5 javax.jws.WebResult
    2.6  javax.jws.HandlerChain
    2.7  javax.jws.soap.SOAPBinding
3. JSR 224 (JAX-WS) Annotations
    3.1 javax.xml.ws.BindingType
    3.2 javax.xml.ws.RequestWrapper
    3.3 javax.xml.ws.ResponseWrapper
    3.4 javax.xml.ws.ServiceMode
    3.5 javax.xml.ws.WebEndpoint
    3.6 javax.xml.ws.WebFault
    3.7 javax.xml.ws.WebServiceClient
    3.8 javax.xml.ws.WebServiceProvider
    3.9 javax.xml.ws.WebServiceRef
4. JSR 222 (JAXB) Annotations
    4.1 javax.xml.bind.annotation.XmlRootElement 
    4.2 javax.xml.bind.annotation.XmlAccessorType
    4.3 javax.xml.bind.annotation.XmlType
    4.4 javax.xml.bind.annotation.XmlElement
5. JSR 250 (Common Annotations) Annotations
    5.1 javax.annotation.Resource
    5.2 javax.annotation.PostConstruct
    5.3 javax.annotation.PreDestroy

1. Overview

Annotations play a critical role in JAX-WS 2.0. First, annotations are used in mapping Java to WSDL and schema. Second, annotations are used a runtime to control how the JAX-WS runtime processes and responds to web service invocations. Currently the annotations utilized by JAXR-WS 2.0 are defined in separate JSRs: 1) JSR 181: Web Services Metadata for the Java^TM Platform, 2) JSR 222: Java^TM Architecture for XML Binding (JAXB) 2.0, 3) JSR 224: Java^TM API for XML Web Services (JAX-WS) 2.0, 4)  JSR 250: Common Annotations for the Java^TM Platform.

2. JSR 181 (Web Services Metadata) Annotations

Because JSR 181 has been written to work with JAX-RPC 1.1, we have made slight changes in the use and interpretation of these annotations to work better with JAX-WS 2.0. We are working with the 181 expert group to align the next release with JAX-WS 2.0 and we hope that all of the changes we have made will be folded in.

2.1 javax.jws.WebService

The purpose of this annotation is to mark a endpoint implementation as implementing a web service or to mark that a service endpoint interface as defining a web service interface. All endpoint implementation classes MUST have a WebService annotation and must meet the requirements of section 3.3 of the JAX-WS 2.0 specification.

Annotation Type Definition

@Retention(value=RetentionPolicy.RUNTIME)
@Target({TYPE})
public @interface WebService {
    String name() default "";
    String targetNamespace() default "";
    String serviceName() default "";
    String wsdlLocation() default "";
    String endpointInterface() default "";
    String portName() default "";
}

Example 1

@WebService(name = "AddNumbers",
            targetNamespace = "http://duke.org", name="AddNumbers")
public class AddNumbersImpl {
    /**
     * @param number1
     * @param number2
     * @return The sum
     * @throws AddNumbersException
     *             if any of the numbers to be added is negative.
     */
     public int addNumbers(int number1, int number2) throws AddNumbersException {
        if (number1 < 0 || number2 < 0) {
            throw new AddNumbersException("Negative number cant be added!",
                                         "Numbers: " + number1 + ", " + number2);
        }
        return number1 + number2;
     }
}

If you are familiar with JAX-RPC 1.1, you will notice that the AddNumbersImpl implementation class does not implement a service endpoint interface. In JAX-WS 2.0 a service endpoint interface is no longer required. If a service endpoint interfaces is desired, then the @WebService annotation on the endpoint implementation is modified to specify the endpoint interface and the actual service endpoint interface must also have a @WebService annotation. The following is the above AddNumbersImpl modified to use a service endpoint interface.

Example 2

@WebService(endpointInterface = "annotations.server.AddNumbersIF")
public class AddNumbersImpl {
    /**
     * @param number1
     * @param number2
     * @return The sum
     * @throws AddNumbersException
     *             if any of the numbers to be added is negative.
     */
     public int addNumbers(int number1, int number2) throws AddNumbersException {
        if (number1 < 0 || number2 < 0) {
            throw new AddNumbersException("Negative number cant be added!",
                                         "Numbers: " + number1 + ", " + number2);
        }
        return number1 + number2;
     }
}

@WebService(targetNamespace = "http://duke.org", name="AddNumbers")
public interface AddNumbersIF extends Remote {
    public int addNumbers(int number1, int number2) throws RemoteException, AddNumbersException;
}

2.2 javax.jws.WebMethod

The purpose of this annotation is to expose a method as a web service operation. The method must meet all the requirements of section 3.4 of the JAX-WS 2.0 specification.

Annotation Type Definition

@Retention(value=RetentionPolicy.RUNTIME)
@Target({METHOD})
public @interface WebMethod {
    String operationName() default "";
    String action() default ""; 
    boolean exclude() default false;
}

Example

@WebService(targetNamespace = "http://duke.org", name="AddNumbers")
public interface AddNumbersIF extends Remote {
    @WebMethod(operationName="add", action="urn:addNumbers")
    public int addNumbers(int number1, int number2) throws RemoteException, AddNumbersException;
}

2.3 javax.jws.OneWay

The purpose of this annotation is to mark a method as a web service one-way operation. The method must meet all the requirements of section 3.4.1 of the JSR 224 spec.

There are no properties on the OneWay annotation.

Annotation Type Definition

@Retention(value=RetentionPolicy.RUNTIME)
@Target({METHOD})
   public @interface Oneway {
}

Example

@WebService(name="CheckIn")
public class CheckInIF {
    @WebMethod
    @OneWay
    public void checkIn(String name);
}

2.5 javax.jws.WebParam

This annotation is used to customize the mapping of a single parameter to a message part or element.

Annotation Type Definition

@Retention(value=RetentionPolicy.RUNTIME)
@Target({PARAMETER})
public @interface WebParam {
    
    public enum Mode {
   	IN,
	OUT,
	INOUT
    };

    String name() default "";
    String targetNamespace() default "";
    Mode mode() default Mode.IN;
    boolean header() default false;
    String partName() default "";
}

Example 1

@WebService(targetNamespace = "http://duke.org", name="AddNumbers")
public interface AddNumbersIF extends Remote {
    @WebMethod(operationName="add", action="urn:addNumbers")
    @WebResult(name="return")
    public int addNumbers(
        @WebParam(name="num1")int number1,
        @WebParam(name="num2")int number2) throws RemoteException, AddNumbersException;
}

Example 2

@WebService(targetNamespace = "http://duke.org", name="AddNumbers")
public interface AddNumbersIF extends Remote {
    @WebMethod(operationName="add", action="urn:addNumbers")
    @WebResult(name="return")
    public void addNumbers(
        @WebParam(name="num1")int number1,
        @WebParam(name="num2")int number2,
        @WebParam(name="result" mode=WebParam.Mode.OUT) Holder<Integer> result)
        throws RemoteException, AddNumbersException;
}

2.5 javax.jws.WebResult

This annotation is used to customize the mapping of the method return value to a WSDL part or XML element.

Annotation Type Definition

@Retention(value=RetentionPolicy.RUNTIME)
@Target({METHOD})
public @interface WebResult {
    
    String name() default "return";
    String targetNamespace() default "";
    boolean header() default false;
    String partName() default "";
}

Example

@WebService(targetNamespace = "http://duke.org", name="AddNumbers")
public interface AddNumbersIF extends Remote {
    @WebMethod(operationName="add", action="urn:addNumbers")
    @WebResult(name="return")
    public int addNumbers(
        @WebParam(name="num1")int number1,
        @WebParam(name="num2")int number2) throws RemoteException, AddNumbersException;
}

2.6 javax.jws.HandlerChain

This annotation is used to specified an externally defined handler chain.

Annotation Type Definition

@Retention(value=RetentionPolicy.RUNTIME)
@Target({TYPE})
public @interface HandlerChain {
    String file();
    String name();
}

Example

@WebService
@HandlerChain( file="handlers.xml", name="Chain1")
public class AddNumbersImpl {
    /**
     * @param number1
     * @param number2
     * @return The sum
     * @throws AddNumbersException
     *     if any of the numbers to be added is negative.
     */
    public int addNumbers(int number1, int number2) throws AddNumbersException {
        if (number1 < 0 || number2 < 0) {
            throw new AddNumbersException("Negative number cant be added!",
                "Numbers: " + number1 + ", " + number2);
        }
        return number1 + number2;
    }
}

/*  handlers.xml */
<jws:handler-config xmlns:jws="http://java.sun.com/xml/ns/javaee">
    <jws:handler-chains>
        <jws:handler-chain>
            <jws:handler>
                <jws:handler-class>fromjavahandler.common.LoggingHandler</jws:handler-class>
            </jws:handler>
        </jws:handler-chain>
    </jws:handler-chains>
</jws:handler-config>

IMPORTANT NOTE:

When using a handler chain file, it is important that the file is store in the appropriate place in the classpath so that the file can be found. This means that when a raw WAR file is created that the file must be place in the proper directory. Please refer to the fromjavahandlers sample application and the handlers documentation for more information.

2.7 javax.jws.soap.SOAPBinding

JSR 181 also allows you to specify a SOAPBinding annotation on a endpoint implementation or service endpoint interface. This annotation lets the developer choose between document/literal wrapped, document/literal bare, rpc/literal and rpc/encoded endpoints with the default being document/literal wrapped. JAX-WS 2.0 does not support rpc/encoded. The main difference between document/literal bare and document/literal wrapped is that methods on a document/literal wrapped endpoint can have multiple parameters bound to the body of a SOAP message, while a document/literal bare can only have one such parameter. The main difference between document/literal wrapped and rpc/literal is that a document/literal invocation can be fully validated by a standard validating XML parser, while an rpc/literal invocation cannot because of the implied wrapper element around the invocation body.

Annotation Type Definition

@Retention(value=RetentionPolicy.RUNTIME)
@Target({TYPE})
public @interface SOAPBinding {
    public enum Style {
       DOCUMENT,
       RPC,
    };

    public enum Use {
        LITERAL,
        ENCODED,
    };

    public enum ParameterStyle {
        BARE,
        WRAPPED,
    };

    Style style() default Style.DOCUMENT;
    Use use() default Use.LITERAL;
    ParameterStyle parameterStyle() default ParameterStyle.WRAPPED;
}

IMPORTANT NOTE:

The original SOAPBinding annotation is only targeted for a TYPE. For this release we have added com.sun.ws.soap.SOAPBinding annotation defined as:

@Retention(value=RetentionPolicy.RUNTIME)
@Target({TYPE, METHOD})
public @interface SOAPBinding {
    public enum Style {
       DOCUMENT,
       RPC,
    };

    public enum Use {
        LITERAL,
        ENCODED,
    };

    public enum ParameterStyle {
        BARE,
        WRAPPED,
    };

    Style style() default Style.DOCUMENT;
    Use use() default Use.LITERAL;
    ParameterStyle parameterStyle() default ParameterStyle.WRAPPED;
}

You may see the Sun version of this annotation on methods in service endpoint interfaces generated by JAX-WS.  This is because WSDLs are not always guaranteed to have the same bindings for each operation, especially when WRAPPED vs BARE comes into play.

Example

@WebService(targetNamespace = "http://duke.org", name="AddNumbers")
@SOAPBinding(style=SOAPBinding.Style.RPC, use=SOAPBinding.Use.LITERAL)
public interface AddNumbersIF extends Remote {
    @WebMethod(operationName="add", action="urn:addNumbers")
    @WebResult(name="return")
    public int addNumbers(
        @WebParam(name="num1")int number1,
        @WebParam(name="num2")int number2) throws RemoteException, AddNumbersException;
}

3. JSR 224 (JAX-WS) Annotations

The following are standard annotations needed by JAX-WS that are not defined in 181. The developer may not ever use these annotations directly as some of them are generated by JAX-WS tools but they will be presented here to avoid confusion.

3.1 javax.xml.ws.BindingType

The BindingType annotation is used to specify the binding to use for a web service endpoint implementation class.

This annotation may be overriden programmatically or via deployment descriptors, depending on the platform in use.

@see javax.xml.ws.Binding
@see javax.xml.ws.soap.SOAPBinding#SOAP11HTTP_BINDING
@see javax.xml.ws.soap.SOAPBinding#SOAP12HTTP_BINDING
@see javax.xml.ws.http.HTTPBinding#HTTP_BINDING

Annotation Type Definition

@Target(ElementType.TYPE)@Retention(RetentionPolicy.RUNTIME)
public @interface BindingType {
    /**
      * A binding identifier (a URI).
      * If not specified, the default is the SOAP 1.1 / HTTP binding.
      *
      * See the SOAPBinding and HTTPBinding
      * for the definition of the standard binding identifiers.
      *
      * @see javax.xml.ws.Binding
      * @see javax.xml.ws.soap.SOAPBinding#SOAP11HTTP_BINDING
      * @see javax.xml.ws.soap.SOAPBinding#SOAP12HTTP_BINDING
      * @see javax.xml.ws.http.HTTPBinding#HTTP_BINDING
      */
     String value() default "" ;
}

Example

Given the web service defined by:

@WebService
@BindingType(value="http://www.w3.org/2003/05/soap/bindings/HTTP/")
public class AddNumbersImpl {
    /**
     * @param number1
     * @param number2
     * @return The sum
     * @throws AddNumbersException
     *             if any of the numbers to be added is negative.
     */
     public int addNumbers(int number1, int number2) throws AddNumbersException {
         if (number1 < 0 || number2 < 0) {
            throw new AddNumbersException("Negative number cant be added!",
                                          "Numbers: " + number1 + ", " + number2);
        }
        return number1 + number2;
     }
}

The deployed endpoint would use the SOAP1.2 over HTTP binding.

3.2 javax.xml.ws.RequestWrapper

This annotation annotates methods in the Service Endpoint Interface with the request wrapper bean to be used at runtime.

When starting from Java this annotation is used resolve overloading conflicts in document literal mode. Only the className is required in this case.

Annotation Type Definition

@Target({ElementType.TYPE})@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface RequestWrapper {
  /**
   *  Elements local name.
  **/
  public String localName() default "";

  /**
   *  Elements namespace name.

  **/
  public String targetNamespace() default "";

  /**
   *  Request wrapper bean name.
  **/
  public String className() default "";
}
 

Example

public interface AddNumbersImpl {

    /**
     * 
     * @param arg1
     * @param arg0
     * @return
     *     returns int
     * @throws AddNumbersException_Exception
     */
    @WebMethod
    @WebResult(targetNamespace = "")
    @RequestWrapper(localName = "addNumbers", targetNamespace = "http://server.fromjava/", className = "fromjava.client.AddNumbers")
    @ResponseWrapper(localName = "addNumbersResponse", targetNamespace = "http://server.fromjava/", className = "fromjava.client.AddNumbersResponse")
    public int addNumbers(
        @WebParam(name = "arg0", targetNamespace = "")
        int arg0,
        @WebParam(name = "arg1", targetNamespace = "")
        int arg1)
        throws AddNumbersException_Exception;
}

3.3 javax.xml.ws.ResponseWrapper

This annotation annotates methods in the Service Endpoint Interface with the response wrapper bean to be used at runtime.

When starting from Java this annotation is used resolve overloading conflicts in document literal mode. Only the className is required in this case.

Annotation Type Definition

@Target({ElementType.TYPE})@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface ResponseWrapper {
  /**
   *  Elements local name.
  **/
  public String localName() default "";

  /**
   *  Elements namespace name.

  **/
  public String targetNamespace() default "";

  /**
   *  Request wrapper bean name.
  **/
  public String className() default "";
}
 

Example

public interface AddNumbersImpl {

    /**
     * 
     * @param arg1
     * @param arg0
     * @return
     *     returns int
     * @throws AddNumbersException_Exception
     */
    @WebMethod
    @WebResult(targetNamespace = "")
    @RequestWrapper(localName = "addNumbers", targetNamespace = "http://server.fromjava/", className = "fromjava.client.AddNumbers")
    @ResponseWrapper(localName = "addNumbersResponse", targetNamespace = "http://server.fromjava/", className = "fromjava.client.AddNumbersResponse")
    public int addNumbers(
        @WebParam(name = "arg0", targetNamespace = "")
        int arg0,
        @WebParam(name = "arg1", targetNamespace = "")
        int arg1)
        throws AddNumbersException_Exception;
}

3.4 javax.xml.ws.ServiceMode

This annotation allows the Provider developer to to indicate whether a Provider implementation wishes to work with entire protocol messages or just with protocol message payloads.

Annotation Type Definition

@Target({ElementType.TYPE})@Retention(RetentionPolicy.RUNTIME)
@Inherited
public @interface ServiceMode {
  /**
   * Service mode. PAYLOAD indicates that the Provider implementation
   * wishes to work with protocol message payloads only. MESSAGE indicates
   * that the Provider implementation wishes to work with entire protocol
   * messages.
  **/
  public Service.Mode value() default Service.Mode.PAYLOAD;
}

Example

@ServiceMode(value=Service.Mode.PAYLOAD)
public class AddNumbersImpl implements Provider<Source> {
    public Source invoke(Source source)
        throws RemoteException {
        try {
            DOMResult dom = new DOMResult();
            Transformer trans = TransformerFactory.newInstance().newTransformer();
            trans.transform(source, dom);
            Node node = dom.getNode();
            Node root = node.getFirstChild();
            Node first = root.getFirstChild();
            int number1 = Integer.decode(first.getFirstChild().getNodeValue());
            Node second = first.getNextSibling();
            int number2 = Integer.decode(second.getFirstChild().getNodeValue());
            return sendSource(number1, number2);
        } catch(Exception e) {
            e.printStackTrace();
            throw new RemoteException("Error in provider endpoint");
        }
    }

    private Source sendSource(int number1, int number2) {
        int sum = number1+number2;
        String body =
            "<ns:addNumbersResponse xmlns:ns=\"http://duke.org\"><return>"
            +sum
            +"</return></ns:addNumbersResponse>";
        Source source = new StreamSource(
            new ByteArrayInputStream(body.getBytes()));
        return source;
    }
}

3.5 javax.xml.ws.WebEndpoint

Used to annotate the getPortName() methods of a generated service interface.

The information specified in this annotation is sufficient to uniquely identify a wsdl:port element inside a wsdl:service. The latter is determined based on the value of the WebServiceClient annotation on the generated service interface itself.

Annotation Type Definition

/** 
 *  Used to annotate the getPortName()
 *  methods of a generated service interface.
 *
 *  
The information specified in this annotation is sufficient
 *  to uniquely identify a wsdl:port element
 *  inside a wsdl:service. The latter is
 *  determined based on the value of the WebServiceClient
 *  annotation on the generated service interface itself.
 *
 *  @since JAX-WS 2.0
 *
 *  @see javax.xml.ws.WebServiceClient
**/
@Target({ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
public @interface WebEndpoint {
  /**
   *  The local name of the endpoint.
  **/
  String name() default "";
}

Example

@WebServiceClient(name = "AddNumbersImplService", targetNamespace = "http://server.fromjava/", wsdlLocation = "http://localhost:8080/jaxws-fromjava/addnumbers?wsdl")
public class AddNumbersImplService
    extends Service
{
    private final static URL WSDL_LOCATION;
    private final static QName ADDNUMBERSIMPLSERVICE = new QName("http://server.fromjava/", "AddNumbersImplService");
    private final static QName ADDNUMBERSIMPLPORT = new QName("http://server.fromjava/", "AddNumbersImplPort");

    static {
        URL url = null;
        try {
            url = new URL("http://localhost:8080/jaxws-fromjava/addnumbers?wsdl");
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }
        WSDL_LOCATION = url;
    }

    public AddNumbersImplService(URL wsdlLocation, QName serviceName) {
        super(wsdlLocation, serviceName);
    }

    public AddNumbersImplService() {
        super(WSDL_LOCATION, ADDNUMBERSIMPLSERVICE);
    }

    /**
     * 
     * @return
     *     returns AddNumbersImpl
     */
    @WebEndpoint(name = "AddNumbersImplPort")
    public AddNumbersImpl getAddNumbersImplPort() {
        return (AddNumbersImpl)super.getPort(ADDNUMBERSIMPLPORT, AddNumbersImpl.class);
    }
}

3.6 javax.xml.ws.WebFault

This annotation is generated by the JAX-WS tools into service specific exception classes generated from a WSDL to customize to the local and namespace name of the fault element and the name of the fault bean and to mark the service specific exception as one generated from WSDL. Developers should not use this annotation themselves. The reason that the JAX-WS needs to know if a service specific exception is generated from a WSDL or not is because these exceptions will already have a fault bean generated for them. The name of this fault bean is not the same name as on generated from a Java service specific exception class. For more information on this topic, please refer to section 3.6 of the JAX-WS 2.0 specification.

Annotation Type Definition

/** 
 * Used to annotate service specific exception classes to customize 
 * to the local and namespace name of the fault element and the name
 * of the fault bean.
 *
 *  @since JAX-WS 2.0
**/
@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
public @interface WebFault {
  /**
   *  Elements local name.
  **/
  public String name() default "";

  /**
   *  Elements namespace name.
  **/
  public String targetNamespace() default "";

  /**
   *  Fault bean name.
  **/
  public String faultBean() default "";
}

Example

@javax.xml.ws.WebFault(name="AddNumbersException",
    targetNamespace="http://server.fromjava/jaxws")
public class AddNumbersException_Exception extends Exception {
    private fromjava.client.AddNumbersException faultInfo;
    public AddNumbersException_Exception(String message, fromjava.client.AddNumbersException faultInfo) {
        super(message);
        this.faultInfo = faultInfo;
    }

    public AddNumbersException_Exception(String message, fromjava.client.AddNumbersException faultInfo,
                                         Throwable cause) {
        super(message, cause);
        this.faultInfo = faultInfo;
    }

    public fromjava.client.AddNumbersException getFaultInfo() {
        return faultInfo;
    }
}

3.7 javax.xml.ws.WebServiceClient

The information specified in this annotation is sufficient to uniquely identify a wsdl:service element inside a WSDL document. This wsdl:service element represents the Web service for which the generated service interface provides a client view.

Annotation Type Definition

/** 
 *  Used to annotate a generated service interface.
 *
 *  
The information specified in this annotation is sufficient
 *  to uniquely identify a wsdl:service
 *  element inside a WSDL document. This wsdl:service
 *  element represents the Web service for which the generated
 *  service interface provides a client view.
 *
 *  @since JAX-WS 2.0
**/
@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
public @interface WebServiceClient {
  /**
   *  The local name of the Web service.
  **/
  String name() default "";

  /**
   *  The namespace for the Web service.
  **/
  String targetNamespace() default "";

  /**
   *  The location of the WSDL document for the service (a URL).
  **/
  String wsdlLocation() default "";
}

Example

@WebServiceClient(name = "AddNumbersImplService", targetNamespace = "http://server.fromjava/", wsdlLocation = "http://localhost:8080/jaxws-fromjava/addnumbers?wsdl")
public class AddNumbersImplService
    extends Service
{
    private final static URL WSDL_LOCATION;
    private final static QName ADDNUMBERSIMPLSERVICE = new QName("http://server.fromjava/", "AddNumbersImplService");
    private final static QName ADDNUMBERSIMPLPORT = new QName("http://server.fromjava/", "AddNumbersImplPort");

    static {
        URL url = null;
        try {
            url = new URL("http://localhost:8080/jaxws-fromjava/addnumbers?wsdl");
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }
        WSDL_LOCATION = url;
    }

    public AddNumbersImplService(URL wsdlLocation, QName serviceName) {
        super(wsdlLocation, serviceName);
    }

    public AddNumbersImplService() {
        super(WSDL_LOCATION, ADDNUMBERSIMPLSERVICE);
    }

    /**
     * 
     * @return
     *     returns AddNumbersImpl
     */
    @WebEndpoint(name = "AddNumbersImplPort")
    public AddNumbersImpl getAddNumbersImplPort() {
        return (AddNumbersImpl)super.getPort(ADDNUMBERSIMPLPORT, AddNumbersImpl.class);
    }
}

3.8 javax.xml.ws.WebServiceProvider

Annotation used to annotate a Provider implementation class.

Annotation Type Definition

/**
 * Used to annotate a Provider implementation class.
 *
 * @since JAX-WS 2.0
 * @see javax.xml.ws.Provider
 */
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
public @interface WebServiceProvider {
    /**
     * Location of the WSDL description for the service.
     */
    String wsdlLocation() default "";    
    
    /**
     * Service name.
     */
    String serviceName() default "";
    
    /**
     * Target namespace for the service
     */
    String targetNamespace() default "";

    /**
     * Port name.
     */
    String portName() default "";
}

Example

@ServiceMode(value=Service.Mode.PAYLOAD)
@WebServiceProvider(wsdlLocation="WEB-INF/wsdl/AddNumbers.wsdl")
public class AddNumbersImpl implements Provider {
    public Source invoke(Source source) {
        try {
            DOMResult dom = new DOMResult();
            Transformer trans = TransformerFactory.newInstance().newTransformer();
            trans.transform(source, dom);
            Node node = dom.getNode();
            Node root = node.getFirstChild();
            Node first = root.getFirstChild();
            int number1 = Integer.decode(first.getFirstChild().getNodeValue());
            Node second = first.getNextSibling();
            int number2 = Integer.decode(second.getFirstChild().getNodeValue());
            return sendSource(number1, number2);
        } catch(Exception e) {
            e.printStackTrace();
            throw new RuntimeException("Error in provider endpoint", e);
        }
    }
    
    private Source sendSource(int number1, int number2) {
        int sum = number1+number2;
        String body =
            ""
            +sum
            +"";
        Source source = new StreamSource(
            new ByteArrayInputStream(body.getBytes()));
        return source;
    }    
}

3.9 javax.xml.ws.WebServiceRef

The WebServiceRef annotation is used to define a reference to a web service and (optionally) an injection target for it. Web service references are resources in the Java EE 5 sense.

Annotation Type Definition

/**
 *  The WebServiceRef annotation is used to
 *  define a reference to a web service and
 *  (optionally) an injection target for it.
 *
 *  Web service references are resources in the Java EE 5 sense.
 * 
 *  @see javax.annotation.Resource
 *
 *  @since JAX-WS 2.0
 *
**/

@Target({ElementType.TYPE, ElementType.METHOD, ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
public @interface WebServiceRef {
     /**
      * The JNDI name of the resource.  For field annotations,
      * the default is the field name.  For method annotations,
      * the default is the JavaBeans property name corresponding
      * to the method.  For class annotations, there is no default
      * and this must be specified.
      */
     String name() default "";

     /**
      * The Java type of the resource.  For field annotations,
      * the default is the type of the field.  For method annotations,
      * the default is the type of the JavaBeans property.
      * For class annotations, there is no default and this must be
      * specified.
      */
     Class type() default Object.class ;

     /**
      * A product specific name that this resource should be mapped to.
      * The name of this resource, as defined by the name
      * element or defaulted, is a name that is local to the application
      * component using the resource.  (It's a name in the JNDI
      * java:comp/env namespace.)  Many application servers
      * provide a way to map these local names to names of resources
      * known to the application server.  This mapped name is often a
      * global JNDI name, but may be a name of any form. 

      *
      * Application servers are not required to support any particular
      * form or type of mapped name, nor the ability to use mapped names.
      * The mapped name is product-dependent and often installation-dependent.
      * No use of a mapped name is portable.
      */
     String mappedName() default "";

     /**
      * The service class, always a type extending
      * javax.xml.ws.Service. This element must be specified
      * whenever the type of the reference is a service endpoint interface.
      */
     Class value() default Object.class ;

     /**
      * A URL pointing to the WSDL document for the web service.
      * If not specified, the WSDL location specified by annotations
      * on the resource type is used instead.
      */
     String wsdlLocation() default "";
}

4. JSR 222 (JAXB) Annotations

The following JAXB annotations are being documented because JAX-WS generates them when generating wrapper beans and exception beans according to the JAX-WS 2.0 spec. Please refer to sections 3.5.2.1 and 3.6 of the JAX-WS 2.0 specification for more information on these beans. For more information on these and other JAXB annotations please refer to the JAXB 2.0 specification.

4.1 javax.xml.bind.annotation.XmlRootElement

This annotation is used to map a top level class to a global element in the XML schema used by the WSDL of the web service.

"##default" – the name is derived from the class 
      

"##default" – the namespace is derived from the package of the class 
      

Annotation Type Definition

@Retention(RUNTIME)
@Target({TYPE})
public @interface XmlRootElement {
    /**
     * namespace name of the XML element.
     *
     * If the value is "##default", then the XML namespace name is derived
     * from the package of the class ( {@link XmlSchema} ). If the
     * package is unnamed, then the XML namespace is the default empty
     * namespace.
     */
    String namespace() default "##default";

    /**
     * local name of the XML element.
     *
     * If the value is "##default", then the name is derived from the
     * class name.
     *
     */
    String name() default "##default";
}

Example

@XmlRootElement(name="addNumbers",
    namespace="http://server.fromjava/jaxws")
@XmlAccessorType(AccessType.FIELD)
public class AddNumbers {
    @XmlElement(namespace="", name="number1")
    @ParameterIndex(value=0)
    public int number1;
    @XmlElement(namespace="", name="number2")
    @ParameterIndex(value=1)
    public int number2;

    public AddNumbers(){}
}

4.2 javax.xml.bind.annotation.XmlAccessorType

This annotation is used to specify whether fields or properties are serialized by default.

Annotation Type Definition

@Inherited @Retention(RUNTIME) @Target({PACKAGE, TYPE})
public @interface XmlAccessorType {
    /**
     * Specifies whether fields or properties are serialized. 
     * 
     * If the value is AccessType.PROPERTY, then properties are
     * serialized by default and fields are assumed to be annotated
     * with {@link XmlTransient}.
     *
     * If the value is AccessType.FIELD, then fields are serialized by
     * default and properties are assumed to be annotated with 
     * with {@link XmlTransient}.
     * 
     */
    AccessType value() default AccessType.PROPERTY;
}



public enum AccessType {
    /**
     * Every getter/setter pair in a JAXB-bound class will be automatically
     * bound to XML, unless annotated by {@link XmlTransient}.
     *
     * Fields are bound to XML only when they are explicitly annotated
     * by some of the JAXB annotations.
     */
    PROPERTY,

    /**
     * Every field in a JAXB-bound class will be automatically
     * bound to XML, unless annotated by {@link XmlTransient}.
     *
     * Getter/setter pairs are bound to XML only when they are explicitly annotated
     * by some of the JAXB annotations.
     */
    FIELD
}

Example

@XmlRootElement(name="addNumbers",
    namespace="http://server.fromjava/jaxws")
@XmlAccessorType(AccessType.FIELD)
public class AddNumbers {
    @XmlElement(namespace="", name="number1")
    @ParameterIndex(value=0)
    public int number1;
    @XmlElement(namespace="", name="number2")
    @ParameterIndex(value=1)
    public int number2;

    public AddNumbers(){}
}

4.3 javax.xml.bind.annotation.XmlType

This annotation is used to map a value class to an XML Schema type. A value class is a data container for values represented by properties and fields. A schema type is a data container for values represented by schema components within a schema type's content model (e.g. Model groups, attributes etc).

"##default"
      

"##default"
      

All of the JavaBean properties being mapped must be listed (i.e. if a JavaBean property mapping is prevented by @XmlTransient, then it does not have to be listed). Otherwise, it is an error.

By default, the JavaBean properties are ordered using a default order specified in the JAXB 2.0 specification.
      

Annotation Type Definition

@Retention(RUNTIME) @Target({TYPE})
public @interface XmlType {
    /**
     * Name of the XML Schema type which the class is mapped.
     */
    String name() default "##default" ;

    /**
     * Specifies the order for XML Schema elements when class is
     * mapped to a XML Schema complex type.
     * 
     * Refer to the table for how the propOrder affects the
     * mapping of class 
     * 
     *     The propOrder is a list of names of JavaBean properties in
     *     the class. Each name in the list is the name of a Java
     *     identifier of the JavaBean property. The order in which
     *     JavaBean properties are listed is the order of XML Schema
     *     elements to which the JavaBean properties are mapped. 
     *     All of the JavaBean properties being mapped must be
     *     listed (i.e. if a JavaBean property mapping is prevented
     *     by @XmlTransient, then it does not have to be
     *     listed). Otherwise, it is an error.
     *     By default, the JavaBean properties are ordered using a
     *     default order specified in the JAXB 2.0 specification.
     */
    String[] propOrder() default {""};

    /**
     * Name of the target namespace of the XML Schema type. By
     * default, this is the target namespace to which the package
     * containing the class is mapped.
     */
    String namespace() default "##default" ;
}

Example

@XmlRootElement(name="addNumbers",
    namespace="http://server.fromjava/jaxws")
@XmlAccessorType(AccessType.FIELD)
public class AddNumbers {
    @XmlElement(namespace="", name="number1")
    @ParameterIndex(value=0)
    public int number1;
    @XmlElement(namespace="", name="number2")
    @ParameterIndex(value=1)
    public int number2;

    public AddNumbers(){}
}

This annotation is used to map a property contained in a class to a local element in the XML Schema complex type to which the containing class is mapped.

Annotation Type Definition

@Retention(RUNTIME) @Target({FIELD, METHOD})
public @interface XmlElement {
    /**
     *
     * Name of the XML Schema element. 
     * If the value is "##default", then element name is derived from the
     * JavaBean property name. 
     */
    String name() default "##default";

    /**
     * Customize the element declaration to be nillable. 
     * If nillable() is true, then the JavaBean property is
     * mapped to a XML Schema nillable element declaration. 
     * If nillable() is false and the JavaBean property type is a
     * collection type, then the JavaBean property is mapped to
     * repeating occurrence. 
     * Otherwise, the JavaBean property is mapped to an an 
     * XML Schema element declaration with occurrence range of 0..1.
     */
    boolean nillable() default false;

    /**
     * Specifies the XML target namespace of the XML Schema
     * element. The namespace must be a valid namespace URI.
     * 
     * It the value is "##default", then the namespace is the
     * namespace of the containing class.
     * 
     */
    String namespace() default "##default" ;

    /**
     * The Java class being referenced.
     */
    Class type() default DEFAULT.class;

    /**
     * Used in {@link XmlElement#type()} to
     * signal that the type be inferred from the signature
     * of the property.
     */
    static final class DEFAULT {}
}

Example

@XmlRootElement(name="addNumbers",
    namespace="http://server.fromjava/jaxws")
@XmlAccessorType(AccessType.FIELD)
public class AddNumbers {
    @XmlElement(namespace="", name="number1")
    @ParameterIndex(value=0)
    public int number1;
    @XmlElement(namespace="", name="number2")
    @ParameterIndex(value=1)
    public int number2;

    public AddNumbers(){}
}

5. JSR 250 (Common Annotations) Annotations

The following annotations are being documented because JAX-WS endpoints use them for resource injection, and as lifecycle methods. Please refer to sections 5.2.1 and 5.3 of the JAX-WS 2.0 specification for resource injection, and lifecycle management. For more information on these and other common annotations please refer to the JSR 250: Common Annotations for the Java^TM Platform.

5.1 javax.annotation.Resource

This annotation is used to mark a WebServiceContext resource that is needed by a web service. It is applied to a field or a method for JAX-WS endpoints. The container will inject an instance of the WebServiceContext resource into the endpoint implementation when it is initialized.

For field annotations,
 the default is the type of the field.  For method annotations,
 the default is the type of the JavaBeans property.
      

Annotation Type Definition

@Target({TYPE, FIELD, METHOD})
@Retention(RUNTIME)
public @interface Resource {
    ...

    /**
     * The Java type of the resource.  For field annotations,
     * the default is the type of the field.  For method annotations,
     * the default is the type of the JavaBeans property.
     * For class annotations, there is no default and this must be
     * specified.
     */

    Class type() default java.lang.Object.class;

}

Example

@WebService
public class HelloImpl {

    @Resource
    private WebServiceContext context;

    public String echoHello(String name) {
      ...
    }
}

5.2 javax.annotation.PostConstruct

This annotation is used on a method that needs to be executed after dependency injection is done to perform any initialization. This method MUST be invoked before the class is put into service.

Annotation Type Definition

@Documented
@Retention (RUNTIME)
@Target(METHOD)
public @interface PostConstruct {

}

Example

@WebService
public class HelloImpl {

    @PostConstruct
    private void init() {
        ...
    }

    public String echoHello(String name) {
        ...
    }
}

5.3 javax.annotation.PreDestroy

The PreDestroy annotation is used on methods as a callback notification to signal that the instance is in the process of being removed by the container. The method annotated with PreDestroy is typically used to release resources that it has been holding.

Annotation Type Definition

@Documented
@Retention(value=RUNTIME)
@Target(value=METHOD)
public @interface PreDestory {

}

Example

@WebService
public class HelloImpl {

    public String echoHello(String name) {
        ...
    }

    @PreDestroy
    private void release() {
        ...
    }
}

Copyright © 2005 Sun Microsystems, Inc. All rights reserved.