Mercurial > jdk8-mips64-public > jaxws / file comparison
comparison: src/share/jaxws_classes/com/sun/xml/internal/bind/v2/runtime/reflect/NullSafeAccessor.java
src/share/jaxws_classes/com/sun/xml/internal/bind/v2/runtime/reflect/NullSafeAccessor.java
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| 1 /* | |
| 2 * Copyright (c) 1997, 2011, 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.bind.v2.runtime.reflect; | |
| 27 | |
| 28 import com.sun.xml.internal.bind.api.AccessorException; | |
| 29 | |
| 30 /** | |
| 31 * {@link Accessor} wrapper that replaces a null with an empty collection. | |
| 32 * | |
| 33 * <p> | |
| 34 * This is so that JAX-WS property accessor will work like an ordinary getter. | |
| 35 * | |
| 36 * | |
| 37 * @author Kohsuke Kawaguchi | |
| 38 */ | |
| 39 public class NullSafeAccessor<B,V,P> extends Accessor<B,V> { | |
| 40 private final Accessor<B,V> core; | |
| 41 private final Lister<B,V,?,P> lister; | |
| 42 | |
| 43 public NullSafeAccessor(Accessor<B,V> core, Lister<B,V,?,P> lister) { | |
| 44 super(core.getValueType()); | |
| 45 this.core = core; | |
| 46 this.lister = lister; | |
| 47 } | |
| 48 | |
| 49 public V get(B bean) throws AccessorException { | |
| 50 V v = core.get(bean); | |
| 51 if(v==null) { | |
| 52 // creates a new object | |
| 53 P pack = lister.startPacking(bean,core); | |
| 54 lister.endPacking(pack,bean,core); | |
| 55 v = core.get(bean); | |
| 56 } | |
| 57 return v; | |
| 58 } | |
| 59 | |
| 60 public void set(B bean, V value) throws AccessorException { | |
| 61 core.set(bean,value); | |
| 62 } | |
| 63 } |
