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src/share/jaxws_classes/com/sun/xml/internal/bind/v2/model/annotation/LocatableAnnotation.java@e530533619ec (annotated)

src/share/jaxws_classes/com/sun/xml/internal/bind/v2/model/annotation/LocatableAnnotation.java

Thu, 12 Oct 2017 19:44:07 +0800

author

aoqi

date

Thu, 12 Oct 2017 19:44:07 +0800

changeset 760

e530533619ec

parent 0

373ffda63c9a

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1997, 2011, 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.xml.internal.bind.v2.model.annotation;
aoqi@0	27
aoqi@0	28	import java.lang.annotation.Annotation;
aoqi@0	29	import java.lang.reflect.InvocationHandler;
aoqi@0	30	import java.lang.reflect.InvocationTargetException;
aoqi@0	31	import java.lang.reflect.Method;
aoqi@0	32	import java.lang.reflect.Proxy;
aoqi@0	33	import java.lang.reflect.Modifier;
aoqi@0	34	import java.util.HashMap;
aoqi@0	35	import java.util.Map;
aoqi@0	36
aoqi@0	37	import com.sun.xml.internal.bind.v2.runtime.Location;
aoqi@0	38
aoqi@0	39	/**
aoqi@0	40	* {@link Annotation} that also implements {@link Locatable}.
aoqi@0	41	*
aoqi@0	42	* @author Kohsuke Kawaguchi
aoqi@0	43	*/
aoqi@0	44	public class LocatableAnnotation implements InvocationHandler, Locatable, Location {
aoqi@0	45	private final Annotation core;
aoqi@0	46
aoqi@0	47	private final Locatable upstream;
aoqi@0	48
aoqi@0	49	/**
aoqi@0	50	* Wraps the annotation into a proxy so that the returned object will also implement
aoqi@0	51	* {@link Locatable}.
aoqi@0	52	*/
aoqi@0	53	public static <A extends Annotation> A create( A annotation, Locatable parentSourcePos ) {
aoqi@0	54	if(annotation==null) return null;
aoqi@0	55	Class<? extends Annotation> type = annotation.annotationType();
aoqi@0	56	if(quicks.containsKey(type)) {
aoqi@0	57	// use the existing proxy implementation if available
aoqi@0	58	return (A)quicks.get(type).newInstance(parentSourcePos,annotation);
aoqi@0	59	}
aoqi@0	60
aoqi@0	61	// otherwise take the slow route
aoqi@0	62
aoqi@0	63	ClassLoader cl = SecureLoader.getClassClassLoader(LocatableAnnotation.class);
aoqi@0	64
aoqi@0	65	try {
aoqi@0	66	Class loadableT = Class.forName(type.getName(), false, cl);
aoqi@0	67	if(loadableT !=type)
aoqi@0	68	return annotation; // annotation type not loadable from this class loader
aoqi@0	69
aoqi@0	70	return (A)Proxy.newProxyInstance(cl,
aoqi@0	71	new Class[]{ type, Locatable.class },
aoqi@0	72	new LocatableAnnotation(annotation,parentSourcePos));
aoqi@0	73	} catch (ClassNotFoundException e) {
aoqi@0	74	// annotation not loadable
aoqi@0	75	return annotation;
aoqi@0	76	} catch (IllegalArgumentException e) {
aoqi@0	77	// Proxy.newProxyInstance throws this if it cannot resolve this annotation
aoqi@0	78	// in this classloader
aoqi@0	79	return annotation;
aoqi@0	80	}
aoqi@0	81
aoqi@0	82	}
aoqi@0	83
aoqi@0	84	LocatableAnnotation(Annotation core, Locatable upstream) {
aoqi@0	85	this.core = core;
aoqi@0	86	this.upstream = upstream;
aoqi@0	87	}
aoqi@0	88
aoqi@0	89	public Locatable getUpstream() {
aoqi@0	90	return upstream;
aoqi@0	91	}
aoqi@0	92
aoqi@0	93	public Location getLocation() {
aoqi@0	94	return this;
aoqi@0	95	}
aoqi@0	96
aoqi@0	97	public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
aoqi@0	98	try {
aoqi@0	99	if(method.getDeclaringClass()==Locatable.class)
aoqi@0	100	return method.invoke(this,args);
aoqi@0	101	if(Modifier.isStatic(method.getModifiers()))
aoqi@0	102	// malicious code can pass in a static Method object.
aoqi@0	103	// doing method.invoke() would end up executing it,
aoqi@0	104	// so we need to protect against it.
aoqi@0	105	throw new IllegalArgumentException();
aoqi@0	106
aoqi@0	107	return method.invoke(core,args);
aoqi@0	108	} catch (InvocationTargetException e) {
aoqi@0	109	if(e.getTargetException()!=null)
aoqi@0	110	throw e.getTargetException();
aoqi@0	111	throw e;
aoqi@0	112	}
aoqi@0	113	}
aoqi@0	114
aoqi@0	115	public String toString() {
aoqi@0	116	return core.toString();
aoqi@0	117	}
aoqi@0	118
aoqi@0	119
aoqi@0	120	/**
aoqi@0	121	* List of {@link Quick} implementations keyed by their annotation type.
aoqi@0	122	*/
aoqi@0	123	private static final Map<Class,Quick> quicks = new HashMap<Class, Quick>();
aoqi@0	124
aoqi@0	125	static {
aoqi@0	126	for( Quick q : Init.getAll() ) {
aoqi@0	127	quicks.put(q.annotationType(),q);
aoqi@0	128	}
aoqi@0	129	}
aoqi@0	130	}