ohair@286: /*
ohair@286:  * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
ohair@286:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ohair@286:  *
ohair@286:  * This code is free software; you can redistribute it and/or modify it
ohair@286:  * under the terms of the GNU General Public License version 2 only, as
ohair@286:  * published by the Free Software Foundation.  Oracle designates this
ohair@286:  * particular file as subject to the "Classpath" exception as provided
ohair@286:  * by Oracle in the LICENSE file that accompanied this code.
ohair@286:  *
ohair@286:  * This code is distributed in the hope that it will be useful, but WITHOUT
ohair@286:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ohair@286:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
ohair@286:  * version 2 for more details (a copy is included in the LICENSE file that
ohair@286:  * accompanied this code).
ohair@286:  *
ohair@286:  * You should have received a copy of the GNU General Public License version
ohair@286:  * 2 along with this work; if not, write to the Free Software Foundation,
ohair@286:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ohair@286:  *
ohair@286:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@286:  * or visit www.oracle.com if you need additional information or have any
ohair@286:  * questions.
ohair@286:  */
ohair@286: 
ohair@286: package com.sun.xml.internal.ws.server.sei;
ohair@286: 
ohair@286: import com.sun.xml.internal.ws.api.model.Parameter;
ohair@286: import com.sun.xml.internal.ws.model.ParameterImpl;
ohair@286: 
ohair@286: import javax.xml.ws.Holder;
ohair@286: 
ohair@286: /**
ohair@286:  * Moves a Java value unmarshalled from a response message
ohair@286:  * to the right place.
ohair@286:  *
ohair@286:  * <p>
ohair@286:  * Sometimes values are returned as a return value, and
ohair@286:  * others are returned in the {@link Holder} value. Instances
ohair@286:  * of this interface abstracts this detail.
ohair@286:  *
ohair@286:  * <p>
ohair@286:  * {@link EndpointValueSetter} is a stateless behavior encapsulation.
ohair@286:  *
ohair@286:  * @author Jitendra Kotamraju
ohair@286:  */
ohair@286: public abstract class EndpointValueSetter {
ohair@286:     private EndpointValueSetter() {}
ohair@286: 
ohair@286:     /**
ohair@286:      * Moves the value to the expected place.
ohair@286:      *
ohair@286:      * @param obj
ohair@286:      *      The unmarshalled object.
ohair@286:      * @param args
ohair@286:      *      The arguments that need to be given to the Java method invocation. If <tt>obj</tt>
ohair@286:      *      is supposed to be returned as a {@link Holder} value, a suitable
ohair@286:      *      {@link Holder} is obtained from this argument list and <tt>obj</tt>
ohair@286:      *      is set.
ohair@286:      *
ohair@286:      */
ohair@286:     abstract void put(Object obj, Object[] args);
ohair@286: 
ohair@286:     /**
ohair@286:      * {@link Param}s with small index numbers are used often,
ohair@286:      * so we pool them to reduce the footprint.
ohair@286:      */
ohair@286:     private static final EndpointValueSetter[] POOL = new EndpointValueSetter[16];
ohair@286: 
ohair@286:     static {
ohair@286:         for( int i=0; i<POOL.length; i++ )
ohair@286:             POOL[i] = new Param(i);
ohair@286:     }
ohair@286: 
ohair@286:     /**
ohair@286:      * Returns a {@link EndpointValueSetter} suitable for the given {@link Parameter}.
ohair@286:      */
ohair@286:     public static EndpointValueSetter get(ParameterImpl p) {
ohair@286:         int idx = p.getIndex();
ohair@286:         if (p.isIN()) {
ohair@286:             if (idx<POOL.length) {
ohair@286:                 return POOL[idx];
ohair@286:             } else {
ohair@286:                 return new Param(idx);
ohair@286:             }
ohair@286:         } else {
ohair@286:             return new HolderParam(idx);
ohair@286:         }
ohair@286:     }
ohair@286: 
ohair@286:     static class Param extends EndpointValueSetter {
ohair@286:         /**
ohair@286:          * Index of the argument to put the value to.
ohair@286:          */
ohair@286:         protected final int idx;
ohair@286: 
ohair@286:         public Param(int idx) {
ohair@286:             this.idx = idx;
ohair@286:         }
ohair@286: 
ohair@286:         void put(Object obj, Object[] args) {
ohair@286:             if (obj != null) {
ohair@286:                 args[idx] = obj;
ohair@286:             }
ohair@286:         }
ohair@286:     }
ohair@286: 
ohair@286:     static final class HolderParam extends Param {
ohair@286: 
ohair@286:         public HolderParam(int idx) {
ohair@286:             super(idx);
ohair@286:         }
ohair@286: 
ohair@286:         @Override
ohair@286:         void put(Object obj, Object[] args) {
ohair@286:             Holder holder = new Holder();
ohair@286:             if (obj != null) {
ohair@286:                 holder.value = obj;
ohair@286:             }
ohair@286:             args[idx] = holder;
ohair@286:         }
ohair@286:     }
ohair@286: }