1 /* 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.xml.internal.ws.server.sei; 27 28 import com.sun.xml.internal.ws.api.model.Parameter; 29 import com.sun.xml.internal.ws.model.ParameterImpl; 30 31 import javax.xml.ws.Holder; 32 33 /** 34 * Moves a Java value unmarshalled from a response message 35 * to the right place. 36 * 37 * <p> 38 * Sometimes values are returned as a return value, and 39 * others are returned in the {@link Holder} value. Instances 40 * of this interface abstracts this detail. 41 * 42 * <p> 43 * {@link EndpointValueSetter} is a stateless behavior encapsulation. 44 * 45 * @author Jitendra Kotamraju 46 */ 47 public abstract class EndpointValueSetter { 48 private EndpointValueSetter() {} 49 50 /** 51 * Moves the value to the expected place. 52 * 53 * @param obj 54 * The unmarshalled object. 55 * @param args 56 * The arguments that need to be given to the Java method invocation. If <tt>obj</tt> 57 * is supposed to be returned as a {@link Holder} value, a suitable 58 * {@link Holder} is obtained from this argument list and <tt>obj</tt> 59 * is set. 60 * 61 */ 62 abstract void put(Object obj, Object[] args); 63 64 /** 65 * {@link Param}s with small index numbers are used often, 66 * so we pool them to reduce the footprint. 67 */ 68 private static final EndpointValueSetter[] POOL = new EndpointValueSetter[16]; 69 70 static { 71 for( int i=0; i<POOL.length; i++ ) 72 POOL[i] = new Param(i); 73 } 74 75 /** 76 * Returns a {@link EndpointValueSetter} suitable for the given {@link Parameter}. 77 */ 78 public static EndpointValueSetter get(ParameterImpl p) { 79 int idx = p.getIndex(); 80 if (p.isIN()) { 81 if (idx<POOL.length) { 82 return POOL[idx]; 83 } else { 84 return new Param(idx); 85 } 86 } else { 87 return new HolderParam(idx); 88 } 89 } 90 91 static class Param extends EndpointValueSetter { 92 /** 93 * Index of the argument to put the value to. 94 */ 95 protected final int idx; 96 97 public Param(int idx) { 98 this.idx = idx; 99 } 100 101 void put(Object obj, Object[] args) { 102 if (obj != null) { 103 args[idx] = obj; 104 } 105 } 106 } 107 108 static final class HolderParam extends Param { 109 110 public HolderParam(int idx) { 111 super(idx); 112 } 113 114 @Override 115 void put(Object obj, Object[] args) { 116 Holder holder = new Holder(); 117 if (obj != null) { 118 holder.value = obj; 119 } 120 args[idx] = holder; 121 } 122 } 123 }