src/share/jaxws_classes/com/sun/istack/internal/Interned.java

Wed, 27 Apr 2016 01:27:09 +0800

author
aoqi
date
Wed, 27 Apr 2016 01:27:09 +0800
changeset 0
373ffda63c9a
child 637
9c07ef4934dd
permissions
-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/jaxws/
changeset: 657:d47a47f961ee
tag: jdk8u25-b17

aoqi@0 1 /*
aoqi@0 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0 4 *
aoqi@0 5 * This code is free software; you can redistribute it and/or modify it
aoqi@0 6 * under the terms of the GNU General Public License version 2 only, as
aoqi@0 7 * published by the Free Software Foundation. Oracle designates this
aoqi@0 8 * particular file as subject to the "Classpath" exception as provided
aoqi@0 9 * by Oracle in the LICENSE file that accompanied this code.
aoqi@0 10 *
aoqi@0 11 * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0 14 * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0 15 * accompanied this code).
aoqi@0 16 *
aoqi@0 17 * You should have received a copy of the GNU General Public License version
aoqi@0 18 * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0 20 *
aoqi@0 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0 22 * or visit www.oracle.com if you need additional information or have any
aoqi@0 23 * questions.
aoqi@0 24 */
aoqi@0 25
aoqi@0 26 package com.sun.istack.internal;
aoqi@0 27
aoqi@0 28 import java.lang.annotation.Documented;
aoqi@0 29 import java.lang.annotation.Retention;
aoqi@0 30 import java.lang.annotation.RetentionPolicy;
aoqi@0 31 import java.lang.annotation.Target;
aoqi@0 32 import java.lang.annotation.ElementType;
aoqi@0 33
aoqi@0 34 /**
aoqi@0 35 * Designates that a field, return value, argument, or a variable is supposed
aoqi@0 36 * to be an {@link String#intern() interned} string.
aoqi@0 37 *
aoqi@0 38 * <p>
aoqi@0 39 * In many places in the istack, we assume Strings to be interned for
aoqi@0 40 * the performance reason. Similarly, In many other places, we don't
aoqi@0 41 * make such an assumption for the performance reason (because intern
aoqi@0 42 * isn't free.)
aoqi@0 43 *
aoqi@0 44 * <p>
aoqi@0 45 * Therefore, distinguishing which part is supposed to be interned and
aoqi@0 46 * which part is supposed to be not is important. This annotation
aoqi@0 47 * allows us to capture that in the code.
aoqi@0 48 *
aoqi@0 49 * @author Kohsuke Kawaguchi
aoqi@0 50 */
aoqi@0 51 @Documented
aoqi@0 52 @Retention(RetentionPolicy.CLASS)
aoqi@0 53 @Target({ElementType.FIELD,ElementType.METHOD,ElementType.PARAMETER,ElementType.LOCAL_VARIABLE})
aoqi@0 54 public @interface Interned {
aoqi@0 55 }

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