jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/istack/internal/Interned.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.istack.internal;

    28 import java.lang.annotation.Documented;

    29 import java.lang.annotation.Retention;

    30 import java.lang.annotation.RetentionPolicy;

    31 import java.lang.annotation.Target;

    32 import java.lang.annotation.ElementType;

    34 /**

    35  * Designates that a field, return value, argument, or a variable is supposed

    36  * to be an {@link String#intern() interned} string.

    37  *

    38  * <p>

    39  * In many places in the istack, we assume Strings to be interned for

    40  * the performance reason. Similarly, In many other places, we don't

    41  * make such an assumption for the performance reason (because intern

    42  * isn't free.)

    43  *

    44  * <p>

    45  * Therefore, distinguishing which part is supposed to be interned and

    46  * which part is supposed to be not is important. This annotation

    47  * allows us to capture that in the code.

    48  *

    49  * @author Kohsuke Kawaguchi

    50  */

    51 @Documented

    52 @Retention(RetentionPolicy.CLASS)

    53 @Target({ElementType.FIELD,ElementType.METHOD,ElementType.PARAMETER,ElementType.LOCAL_VARIABLE})

    54 public @interface Interned {

    55 }

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