| /* |
| * Copyright 2005-2006 Sun Microsystems, Inc. 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. Sun designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| */ |
| |
| 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 javax.xml.ws.Holder; |
| |
| /** |
| * 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 |
| */ |
| 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}. |
| */ |
| public static ValueSetter get(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; |
| } |
| } |
| } |