TrustedGuardingDynamicLinkerExporter.java revision 1551:f3b883bec2d0 
1/*
2 * Copyright (c) 2015, 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 */
25
26package jdk.dynalink.test;
27
28import java.util.ArrayList;
29import java.util.List;
30import jdk.dynalink.linker.GuardingDynamicLinker;
31import jdk.dynalink.linker.GuardingDynamicLinkerExporter;
32import jdk.dynalink.linker.LinkRequest;
33import jdk.dynalink.linker.LinkerServices;
34
35/**
36 * A trusted linker exporter (build file gives appropriate permission to the jar containing this class!).
37 */
38public final class TrustedGuardingDynamicLinkerExporter extends GuardingDynamicLinkerExporter {
39
40    @Override
41    public List<GuardingDynamicLinker> get() {
42        final ArrayList<GuardingDynamicLinker> linkers = new ArrayList<>();
43        linkers.add((GuardingDynamicLinker) (LinkRequest linkRequest, LinkerServices linkerServices) -> {
44            // handle only the TestLinkerOperation instances
45            if (linkRequest.getCallSiteDescriptor().getOperation() instanceof TestLinkerOperation) {
46                System.out.println("inside " + this.getClass().getName());
47                // throw exception to signal to the test method that the control has reached here!
48                throw new ReachedAutoLoadedDynamicLinkerException();
49            } else {
50                // any other operation!
51                return null;
52            }
53        });
54        return linkers;
55    }
56}
57