Mercurial > jdk8-mips64-public > jaxws / file revision

 /*

  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.  Oracle designates this

  * particular file as subject to the "Classpath" exception as provided

  * by Oracle in the LICENSE file that accompanied this code.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 package com.sun.xml.internal.ws.client.sei;

 import com.sun.xml.internal.ws.api.model.Parameter;

 import com.sun.xml.internal.ws.model.ParameterImpl;

 import com.sun.xml.internal.ws.spi.db.PropertyAccessor;

 import javax.xml.ws.Holder;

 import javax.xml.ws.WebServiceException;

 import javax.xml.namespace.QName;

 import javax.xml.bind.JAXBException;

 /**

  * Moves a Java value unmarshalled from a response message

  * to the right place.

  *

  * <p>

  * Sometimes values are returned as a return value, and

  * others are returned in the {@link Holder} value. Instances

  * of this interface abstracts this detail.

  *

  * <p>

  * {@link ValueSetter} is a stateless behavior encapsulation.

  *

  * @author Kohsuke Kawaguchi

  */

 public abstract class ValueSetter {

     private ValueSetter() {}

     /**

      * Moves the value to the expected place.

      *

      * @param obj

      *      The unmarshalled object.

      * @param args

      *      The arguments given to the Java method invocation. If <tt>obj</tt>

      *      is supposed to be returned as a {@link Holder} value, a suitable

      *      {@link Holder} is obtained from this argument list and <tt>obj</tt>

      *      is set.

      *

      * @return

      *      if <tt>obj</tt> is supposed to be returned as a return value

      *      from the method, this method returns <tt>obj</tt>. Otherwise null.

      */

     abstract Object put(Object obj, Object[] args);

     /**

      * Singleton instance.

      */

     private static final ValueSetter RETURN_VALUE = new ReturnValue();

     /**

      * {@link Param}s with small index numbers are used often,

      * so we pool them to reduce the footprint.

      */

     private static final ValueSetter[] POOL = new ValueSetter[16];

     static {

         for( int i=0; i<POOL.length; i++ )

             POOL[i] = new Param(i);

     }

     /**

      * Returns a {@link ValueSetter} suitable for the given {@link Parameter}.

      */

     static ValueSetter getSync(ParameterImpl p) {

         int idx = p.getIndex();

         if(idx==-1)

             return RETURN_VALUE;

         if(idx<POOL.length)

             return POOL[idx];

         else

             return new Param(idx);

     }

     private static final class ReturnValue extends ValueSetter {

         Object put(Object obj, Object[] args) {

             return obj;

         }

     }

     static final class Param extends ValueSetter {

         /**

          * Index of the argument to put the value to.

          */

         private final int idx;

         public Param(int idx) {

             this.idx = idx;

         }

         Object put(Object obj, Object[] args) {

             Object arg = args[idx];

             if(arg!=null) {

                 // we build model in such a way that this is guaranteed

                 assert arg instanceof Holder;

                 ((Holder)arg).value = obj;

             }

             // else {

             //   if null is given as a Holder, there's no place to return

             //   the value, so just ignore.

             // }

             // no value to return

             return null;

         }

     }

     /**

      * Singleton instance.

      */

     static final ValueSetter SINGLE_VALUE = new SingleValue();

     /**

      * Used in case of async invocation, where there is only one OUT parameter

      */

     private static final class SingleValue extends ValueSetter {

         /**

          * Set args[0] as the value

          */

         Object put(Object obj, Object[] args) {

             args[0] = obj;

             return null;

         }

     }

     /**

      * OUT parameters are set in async bean

      */

     static final class AsyncBeanValueSetter extends ValueSetter {

         private final PropertyAccessor accessor;

         AsyncBeanValueSetter(ParameterImpl p, Class wrapper) {

             QName name = p.getName();

             try {

                 accessor = p.getOwner().getBindingContext().getElementPropertyAccessor(

                             wrapper, name.getNamespaceURI(), name.getLocalPart() );

             } catch (JAXBException e) {

                     throw new WebServiceException(  // TODO: i18n

                         wrapper+" do not have a property of the name "+name,e);

             }

         }

         /**

          * Sets the property in async bean instance

          *

          * @param obj property in async bean

          * @param args args[0] contains async bean instance

          * @return null always

          */

         Object put(Object obj, Object[] args) {

             assert args != null;

             assert args.length == 1;

             assert args[0] != null;

             Object bean = args[0];

             try {

                 accessor.set(bean, obj);

             } catch (Exception e) {

                 throw new WebServiceException(e);    // TODO:i18n

             }

             return null;

         }

     }

 }