/*

 * Copyright (c) 2010, 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package nsk.sysdict.share;

import nsk.share.Denotation;

import nsk.share.Failure;

import nsk.share.TestFailure;

import nsk.share.sysdict.ClassLoadersBTree;

import nsk.share.test.Tests;

/**

 * This class is used by btree tests.

 */

public class BTreeTest extends SysDictTest {

    public BTreeTest(String[] args) {

        parseArgs(args);

    }

    public static void main(String args[]) {

        Tests.runTest(new BTreeTest(args), args);

    }

    private int height;

    protected int level;

    String[] nodeNames;

    String[] classNames;

    @Override

    protected void parseArgs(String args[]) {

        super.parseArgs(args);

        for (int i = 0; i < args.length; i++) {

            if (args[i].equals("-level")) {

                level = Integer.parseInt(args[i + 1]);

            }

            if (args[i].equals("-height")) {

                height = Integer.parseInt(args[i + 1]);

            }

        }

        try {

            // Load FatsInfo with URLClassLoader btree.jar & fats.jar should not

            // present in classpath

            Class info;

            if (useFats) {

                info = createJarLoader().loadClass(PACKAGE_PREFIX + "FatsInfo");

            } else {

                info = createJarLoader().loadClass(PACKAGE_PREFIX + "BTreeInfo");

            }

            if (height == 0) {

                height = info.getField("HEIGHT").getInt(null) - 1;

            }

            if (level == 0) {

                level = height - 1;

            }

            if (level >= height) {

                throw new Failure("Icorrect level : " + level + " .Should be less then " + height);

            }

            // generate names for all nodes at the given level:

            Denotation denotation = null;

            if (!useFats) {

                denotation = (Denotation) info.getField("nodesDenotation").get(null);

            }

            // Set all classnames

            String prefix = PACKAGE_PREFIX + info.getField("rootName").get(null);

            nodeNames = new String[1 << level];

            classNames = new String[1 << level];

            for (int i = 0; i < nodeNames.length; i++) {

                if (useFats) {

                    classNames[i] = prefix + ((String[]) info.getField("nodeNames").get(null))[height - 1];

                } else {

                    nodeNames[i] = denotation.nameFor(level, i);

                    classNames[i] = prefix + nodeNames[i];

                }

            }

            System.out.println("The level = " + level + " the height = " + height);

        } catch (Exception e) {

            throw new TestFailure("Can't initialize test correctly", e);

        }

    }

    @Override

    protected final String[] getClassNames() {

        return classNames;

    }

    @Override

    protected final ClassLoader[] createLoaders() {

        ClassLoader jarLoader = createJarLoader();

        ClassLoader loaders[] = new ClassLoader[nodeNames.length];

        ClassLoadersBTree loadersTree = new ClassLoadersBTree(jarLoader, height);

        for (int i = 0; i < loaders.length; i++) {

            loaders[i] = loadersTree.getLoader(nodeNames[i]);

        }

        return loaders;

    }

}