80 lines
2.5 KiB
Java
80 lines
2.5 KiB
Java
/*
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package selectionresolution;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.HashMap;
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public class ByteCodeClassLoader extends ClassLoader {
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ArrayList<ClassConstruct> classes = new ArrayList<>();
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HashMap<String, Class> loadedClasses = new HashMap<>();
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public void addClasses(ClassConstruct... classes) {
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this.classes.addAll(Arrays.asList(classes));
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}
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public void loadAll() throws ClassNotFoundException {
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for (ClassConstruct clazz : classes) {
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findClass(clazz.getDottedName());
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}
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}
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@Override
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public Class findClass(String name) throws ClassNotFoundException {
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Class cls = loadedClasses.get(name);
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if (cls != null) {
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return cls;
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}
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for (ClassConstruct clazz : classes) {
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if (clazz.getDottedName().equals(name)) {
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return load(clazz);
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}
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}
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throw new ClassNotFoundException(name);
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}
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@Override
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public Class loadClass(String name) throws ClassNotFoundException {
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try {
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return findClass(name);
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} catch (ClassNotFoundException e) {
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return super.loadClass(name);
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}
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}
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private Class load(ClassConstruct clazz) {
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byte[] bytecode = clazz.generateBytes();
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Class loadedClass = defineClass(clazz.getDottedName(), bytecode, 0, bytecode.length);
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loadedClasses.put(clazz.getDottedName(), loadedClass);
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return loadedClass;
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}
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}
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