jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/xml/internal/ws/server/sei/ValueGetter.java@9c07ef4934dd

     1 /*

     2  * Copyright (c) 1997, 2012, 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  */

    26 package com.sun.xml.internal.ws.server.sei;

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

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

    31 import javax.jws.WebParam.Mode;

    32 import javax.xml.ws.Holder;

    34 /**

    35  * Gets a value from an object that represents a parameter passed

    36  * as a method argument.

    37  *

    38  * <p>

    39  * This abstraction hides the handling of {@link Holder}.

    40  *

    41  * <p>

    42  * {@link ValueGetter} is a stateless behavior encapsulation.

    43  *

    44  * @author Kohsuke Kawaguchi

    45  */

    46 public enum ValueGetter {

    47     /**

    48      * {@link ValueGetter} that works for {@link Mode#IN}  parameter.

    49      *

    50      * <p>

    51      * Since it's the IN mode, the parameter is not a {@link Holder},

    52      * therefore the parameter itself is a value.

    53      */

    54     PLAIN() {

    55         public Object get(Object parameter) {

    56             return parameter;

    57         }

    58     },

    59     /**

    60      * Creates {@link ValueGetter} that works for {@link Holder},

    61      * which is  {@link Mode#INOUT} or  {@link Mode#OUT}.

    62      *

    63      * <p>

    64      * In those {@link Mode}s, the parameter is a {@link Holder},

    65      * so the value to be sent is obtained by getting the value of the holder.

    66      */

    67     HOLDER() {

    68         public Object get(Object parameter) {

    69             if(parameter==null)

    70                 // the user is allowed to pass in null where a Holder is expected.

    71                 return null;

    72             return ((Holder)parameter).value;

    73         }

    74     };

    76     /**

    77      * Gets the value to be sent, from a parameter given as a method argument.

    78      */

    79     public abstract Object get(Object parameter);

    81     /**

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

    83      */

    84     public static ValueGetter get(ParameterImpl p) {

    85         // return value is always PLAIN

    86         if(p.getMode() == Mode.IN || p.getIndex() == -1) {

    87             return PLAIN;

    88         } else {

    89             return HOLDER;

    90         }

    91     }

    92 }

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