aoqi@0: /* aoqi@0: * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. aoqi@0: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. aoqi@0: * aoqi@0: * This code is free software; you can redistribute it and/or modify it aoqi@0: * under the terms of the GNU General Public License version 2 only, as aoqi@0: * published by the Free Software Foundation. Oracle designates this aoqi@0: * particular file as subject to the "Classpath" exception as provided aoqi@0: * by Oracle in the LICENSE file that accompanied this code. aoqi@0: * aoqi@0: * This code is distributed in the hope that it will be useful, but WITHOUT aoqi@0: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or aoqi@0: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License aoqi@0: * version 2 for more details (a copy is included in the LICENSE file that aoqi@0: * accompanied this code). aoqi@0: * aoqi@0: * You should have received a copy of the GNU General Public License version aoqi@0: * 2 along with this work; if not, write to the Free Software Foundation, aoqi@0: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. aoqi@0: * aoqi@0: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA aoqi@0: * or visit www.oracle.com if you need additional information or have any aoqi@0: * questions. aoqi@0: */ aoqi@0: aoqi@0: /* aoqi@0: * This file is available under and governed by the GNU General Public aoqi@0: * License version 2 only, as published by the Free Software Foundation. aoqi@0: * However, the following notice accompanied the original version of this aoqi@0: * file, and Oracle licenses the original version of this file under the BSD aoqi@0: * license: aoqi@0: */ aoqi@0: /* aoqi@0: Copyright 2009-2013 Attila Szegedi aoqi@0: aoqi@0: Licensed under both the Apache License, Version 2.0 (the "Apache License") aoqi@0: and the BSD License (the "BSD License"), with licensee being free to aoqi@0: choose either of the two at their discretion. aoqi@0: aoqi@0: You may not use this file except in compliance with either the Apache aoqi@0: License or the BSD License. aoqi@0: aoqi@0: If you choose to use this file in compliance with the Apache License, the aoqi@0: following notice applies to you: aoqi@0: aoqi@0: You may obtain a copy of the Apache License at aoqi@0: aoqi@0: http://www.apache.org/licenses/LICENSE-2.0 aoqi@0: aoqi@0: Unless required by applicable law or agreed to in writing, software aoqi@0: distributed under the License is distributed on an "AS IS" BASIS, aoqi@0: WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or aoqi@0: implied. See the License for the specific language governing aoqi@0: permissions and limitations under the License. aoqi@0: aoqi@0: If you choose to use this file in compliance with the BSD License, the aoqi@0: following notice applies to you: aoqi@0: aoqi@0: Redistribution and use in source and binary forms, with or without aoqi@0: modification, are permitted provided that the following conditions are aoqi@0: met: aoqi@0: * Redistributions of source code must retain the above copyright aoqi@0: notice, this list of conditions and the following disclaimer. aoqi@0: * Redistributions in binary form must reproduce the above copyright aoqi@0: notice, this list of conditions and the following disclaimer in the aoqi@0: documentation and/or other materials provided with the distribution. aoqi@0: * Neither the name of the copyright holder nor the names of aoqi@0: contributors may be used to endorse or promote products derived from aoqi@0: this software without specific prior written permission. aoqi@0: aoqi@0: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS aoqi@0: IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED aoqi@0: TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A aoqi@0: PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER aoqi@0: BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR aoqi@0: CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF aoqi@0: SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR aoqi@0: BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, aoqi@0: WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR aoqi@0: OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF aoqi@0: ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. aoqi@0: */ aoqi@0: aoqi@0: package jdk.internal.dynalink.beans; aoqi@0: aoqi@0: import java.lang.invoke.MethodHandle; aoqi@0: import java.lang.reflect.Field; aoqi@0: import java.lang.reflect.Member; aoqi@0: import java.lang.reflect.Method; aoqi@0: import java.lang.reflect.Modifier; aoqi@0: import java.util.ArrayList; aoqi@0: import java.util.Collection; aoqi@0: import java.util.Collections; aoqi@0: import java.util.Map; aoqi@0: import jdk.internal.dynalink.support.Lookup; aoqi@0: aoqi@0: /** aoqi@0: * Base for classes that expose class field and method information to an {@link AbstractJavaLinker}. There are aoqi@0: * subclasses for instance (bean) and static facet of a class. aoqi@0: * @author Attila Szegedi aoqi@0: */ aoqi@0: abstract class FacetIntrospector { aoqi@0: private final Class clazz; aoqi@0: private final boolean instance; aoqi@0: private final boolean isRestricted; aoqi@0: aoqi@0: protected final AccessibleMembersLookup membersLookup; aoqi@0: attila@962: FacetIntrospector(final Class clazz, final boolean instance) { aoqi@0: this.clazz = clazz; aoqi@0: this.instance = instance; aoqi@0: isRestricted = CheckRestrictedPackage.isRestrictedClass(clazz); aoqi@0: membersLookup = new AccessibleMembersLookup(clazz, instance); aoqi@0: } aoqi@0: aoqi@0: /** aoqi@0: * Returns getters for inner classes. aoqi@0: * @return getters for inner classes. aoqi@0: */ aoqi@0: abstract Map getInnerClassGetters(); aoqi@0: aoqi@0: /** aoqi@0: * Returns the fields for the class facet. aoqi@0: * @return the fields for the class facet. aoqi@0: */ aoqi@0: Collection getFields() { aoqi@0: if(isRestricted) { aoqi@0: // NOTE: we can't do anything here. Unlike with methods in AccessibleMethodsLookup, we can't just return aoqi@0: // the fields from a public superclass, because this class might define same-named fields which will shadow aoqi@0: // the superclass fields, and we have no way to know if they do, since we're denied invocation of aoqi@0: // getFields(). Therefore, the only correct course of action is to not expose any public fields from a class aoqi@0: // defined in a restricted package. aoqi@0: return Collections.emptySet(); aoqi@0: } aoqi@0: aoqi@0: final Field[] fields = clazz.getFields(); aoqi@0: final Collection cfields = new ArrayList<>(fields.length); attila@962: for(final Field field: fields) { aoqi@0: final boolean isStatic = Modifier.isStatic(field.getModifiers()); aoqi@0: if(isStatic && clazz != field.getDeclaringClass()) { aoqi@0: // ignore inherited static fields aoqi@0: continue; aoqi@0: } aoqi@0: aoqi@0: if(instance != isStatic && isAccessible(field)) { aoqi@0: cfields.add(field); aoqi@0: } aoqi@0: } aoqi@0: return cfields; aoqi@0: } aoqi@0: attila@962: boolean isAccessible(final Member m) { aoqi@0: final Class declaring = m.getDeclaringClass(); aoqi@0: // (declaring == clazz) is just an optimization - we're calling this only from code that operates on a sundar@1530: // non-restricted class, so if the declaring class is identical to the class being inspected, then forego aoqi@0: // a potentially expensive restricted-package check. aoqi@0: return declaring == clazz || !CheckRestrictedPackage.isRestrictedClass(declaring); aoqi@0: } aoqi@0: aoqi@0: /** aoqi@0: * Returns all the methods in the facet. aoqi@0: * @return all the methods in the facet. aoqi@0: */ aoqi@0: Collection getMethods() { aoqi@0: return membersLookup.getMethods(); aoqi@0: } aoqi@0: aoqi@0: attila@962: MethodHandle unreflectGetter(final Field field) { aoqi@0: return editMethodHandle(Lookup.PUBLIC.unreflectGetter(field)); aoqi@0: } aoqi@0: attila@962: MethodHandle unreflectSetter(final Field field) { aoqi@0: return editMethodHandle(Lookup.PUBLIC.unreflectSetter(field)); aoqi@0: } aoqi@0: aoqi@0: /** aoqi@0: * Returns an edited method handle. A facet might need to edit an unreflected method handle before it is usable with aoqi@0: * the facet. By default, returns the passed method handle unchanged. The class' static facet will introduce a aoqi@0: * dropArguments. aoqi@0: * @param mh the method handle to edit. aoqi@0: * @return the edited method handle. aoqi@0: */ aoqi@0: abstract MethodHandle editMethodHandle(MethodHandle mh); aoqi@0: }