attila@90: /* attila@90: * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. attila@90: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. attila@90: * attila@90: * This code is free software; you can redistribute it and/or modify it attila@90: * under the terms of the GNU General Public License version 2 only, as attila@90: * published by the Free Software Foundation. Oracle designates this attila@90: * particular file as subject to the "Classpath" exception as provided attila@90: * by Oracle in the LICENSE file that accompanied this code. attila@90: * attila@90: * This code is distributed in the hope that it will be useful, but WITHOUT attila@90: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or attila@90: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License attila@90: * version 2 for more details (a copy is included in the LICENSE file that attila@90: * accompanied this code). attila@90: * attila@90: * You should have received a copy of the GNU General Public License version attila@90: * 2 along with this work; if not, write to the Free Software Foundation, attila@90: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. attila@90: * attila@90: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA attila@90: * or visit www.oracle.com if you need additional information or have any attila@90: * questions. attila@90: */ attila@90: attila@90: /* attila@90: * This file is available under and governed by the GNU General Public attila@90: * License version 2 only, as published by the Free Software Foundation. attila@90: * However, the following notice accompanied the original version of this attila@90: * file, and Oracle licenses the original version of this file under the BSD attila@90: * license: attila@90: */ attila@90: /* attila@90: Copyright 2009-2013 Attila Szegedi attila@90: attila@90: Licensed under both the Apache License, Version 2.0 (the "Apache License") attila@90: and the BSD License (the "BSD License"), with licensee being free to attila@90: choose either of the two at their discretion. attila@90: attila@90: You may not use this file except in compliance with either the Apache attila@90: License or the BSD License. attila@90: attila@90: If you choose to use this file in compliance with the Apache License, the attila@90: following notice applies to you: attila@90: attila@90: You may obtain a copy of the Apache License at attila@90: attila@90: http://www.apache.org/licenses/LICENSE-2.0 attila@90: attila@90: Unless required by applicable law or agreed to in writing, software attila@90: distributed under the License is distributed on an "AS IS" BASIS, attila@90: WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or attila@90: implied. See the License for the specific language governing attila@90: permissions and limitations under the License. attila@90: attila@90: If you choose to use this file in compliance with the BSD License, the attila@90: following notice applies to you: attila@90: attila@90: Redistribution and use in source and binary forms, with or without attila@90: modification, are permitted provided that the following conditions are attila@90: met: attila@90: * Redistributions of source code must retain the above copyright attila@90: notice, this list of conditions and the following disclaimer. attila@90: * Redistributions in binary form must reproduce the above copyright attila@90: notice, this list of conditions and the following disclaimer in the attila@90: documentation and/or other materials provided with the distribution. attila@90: * Neither the name of the copyright holder nor the names of attila@90: contributors may be used to endorse or promote products derived from attila@90: this software without specific prior written permission. attila@90: attila@90: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS attila@90: IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED attila@90: TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A attila@90: PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER attila@90: BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR attila@90: CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF attila@90: SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR attila@90: BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, attila@90: WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR attila@90: OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF attila@90: ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. attila@90: */ attila@90: attila@90: package jdk.internal.dynalink.beans; attila@90: attila@90: import java.lang.invoke.MethodHandle; attila@90: import java.lang.reflect.Field; attila@90: import java.lang.reflect.Member; attila@90: import java.lang.reflect.Method; attila@90: import java.lang.reflect.Modifier; attila@90: import java.util.ArrayList; attila@90: import java.util.Collection; attila@90: import java.util.Collections; attila@90: import java.util.Map; attila@463: import jdk.internal.dynalink.support.Lookup; attila@90: attila@90: /** attila@90: * Base for classes that expose class field and method information to an {@link AbstractJavaLinker}. There are attila@90: * subclasses for instance (bean) and static facet of a class. attila@90: * @author Attila Szegedi attila@90: */ attila@101: abstract class FacetIntrospector { attila@90: private final Class clazz; attila@90: private final boolean instance; attila@90: private final boolean isRestricted; attila@90: attila@90: protected final AccessibleMembersLookup membersLookup; attila@90: attila@90: FacetIntrospector(Class clazz, boolean instance) { attila@90: this.clazz = clazz; attila@90: this.instance = instance; attila@90: isRestricted = CheckRestrictedPackage.isRestrictedClass(clazz); attila@90: membersLookup = new AccessibleMembersLookup(clazz, instance); attila@90: } attila@90: attila@90: /** attila@90: * Returns getters for inner classes. attila@90: * @return getters for inner classes. attila@90: */ attila@90: abstract Map getInnerClassGetters(); attila@90: attila@90: /** attila@90: * Returns the fields for the class facet. attila@90: * @return the fields for the class facet. attila@90: */ attila@90: Collection getFields() { attila@90: if(isRestricted) { attila@90: // NOTE: we can't do anything here. Unlike with methods in AccessibleMethodsLookup, we can't just return attila@90: // the fields from a public superclass, because this class might define same-named fields which will shadow attila@90: // the superclass fields, and we have no way to know if they do, since we're denied invocation of attila@90: // getFields(). Therefore, the only correct course of action is to not expose any public fields from a class attila@90: // defined in a restricted package. attila@90: return Collections.emptySet(); attila@90: } attila@90: attila@90: final Field[] fields = clazz.getFields(); attila@90: final Collection cfields = new ArrayList<>(fields.length); attila@90: for(Field field: fields) { attila@90: if(instance != Modifier.isStatic(field.getModifiers()) && isAccessible(field)) { attila@90: cfields.add(field); attila@90: } attila@90: } attila@90: return cfields; attila@90: } attila@90: attila@90: boolean isAccessible(Member m) { attila@90: final Class declaring = m.getDeclaringClass(); attila@90: // (declaring == clazz) is just an optimization - we're calling this only from code that operates on a attila@90: // non-restriced class, so if the declaring class is identical to the class being inspected, then forego attila@90: // a potentially expensive restricted-package check. attila@90: return declaring == clazz || !CheckRestrictedPackage.isRestrictedClass(declaring); attila@90: } attila@90: attila@90: /** attila@90: * Returns all the methods in the facet. attila@90: * @return all the methods in the facet. attila@90: */ attila@90: Collection getMethods() { attila@90: return membersLookup.getMethods(); attila@90: } attila@90: attila@90: attila@90: MethodHandle unreflectGetter(Field field) { attila@464: return editMethodHandle(Lookup.PUBLIC.unreflectGetter(field)); attila@90: } attila@90: attila@90: MethodHandle unreflectSetter(Field field) { attila@464: return editMethodHandle(Lookup.PUBLIC.unreflectSetter(field)); attila@90: } attila@90: attila@90: /** attila@90: * Returns an edited method handle. A facet might need to edit an unreflected method handle before it is usable with attila@90: * the facet. By default, returns the passed method handle unchanged. The class' static facet will introduce a attila@90: * dropArguments. attila@90: * @param mh the method handle to edit. attila@90: * @return the edited method handle. attila@90: */ attila@90: abstract MethodHandle editMethodHandle(MethodHandle mh); attila@101: }