Quelle Util.java Sprache: JAVA

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/

package org.netbeans.modules.derby;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import org.netbeans.modules.derby.ui.DerbyPropertiesPanel;
import org.openide.DialogDisplayer;
import org.openide.NotifyDescriptor;
import org.openide.filesystems.FileLock;
import org.openide.filesystems.FileObject;
import org.openide.filesystems.FileUtil;
import org.openide.util.Mutex;
import org.openide.util.NbBundle;

/**
*
* @author Andrei Badea
*/
public class Util {
    private static final String DERBY_CLIENT = "derbyclient.jar"; // NOI18N

    private Util() {
    }

    public static boolean hasInstallLocation() {
        return getCheckedLocation() != null;
    }

    public static boolean checkInstallLocation() {
        if (!hasInstallLocation()) {
            showInformation(NbBundle.getMessage(Util.class, "MSG_DerbyLocationIncorrect"));
            return false;
        }
        return true;
    }

    private static File getCheckedLocation() {
        File location = new File(DerbyOptions.getDefault().getLocation());
        if (location.isAbsolute() && location.isDirectory() && location.exists()) {
            return location;
        }
        return null;
    }

    public static File getDerbyFile(String relPath) {
        File location = getCheckedLocation();
        if (location != null) {
            return new File(location, relPath);
        }
        return null;
    }

    public static boolean ensureSystemHome() {
        if (DerbyOptions.getDefault().getSystemHome().length() <= 0) {
            return Mutex.EVENT.writeAccess(new Mutex.Action<Boolean>() {
                public Boolean run() {
                    return DerbyPropertiesPanel.showDerbyProperties();
                }
            });
        }
        return true;
    }

    public static void showInformation(final String msg){
        Mutex.EVENT.readAccess(new Runnable() {
            public void run() {
                NotifyDescriptor d = new NotifyDescriptor.Message(msg, NotifyDescriptor.INFORMATION_MESSAGE);
                DialogDisplayer.getDefault().notify(d);
            }
        });
    }

    public static boolean isDerbyInstallLocation(File location) {
        if (location == null || ! location.exists()) {
            return false;
        }
        File libDir = new File(location, "lib"); // NOI18N
        if (!libDir.exists()) {
            return false;
        }
        File[] libs = libDir.listFiles();
        if (libs == null || libs.length <= 0) {
            return false;
        }
        for (File lib : libs) {
            if (lib.getName().equals(DERBY_CLIENT)) {
                return true;
            }
        }
        return false;
    }

    public static void extractZip(File source, FileObject target) throws IOException {
        FileInputStream is = new FileInputStream(source);
        try {
            ZipInputStream zis = new ZipInputStream(is);
            ZipEntry ze;

            while ((ze = zis.getNextEntry()) != null) {
                String name = ze.getName();

                // if directory, create
                if (ze.isDirectory()) {
                    FileUtil.createFolder(target, name);
                    continue;
                }

                // if file, copy
                FileObject fd = FileUtil.createData(target, name);
                FileLock lock = fd.lock();
                try {
                    OutputStream os = fd.getOutputStream(lock);
                    try {
                        FileUtil.copy(zis, os);
                    } finally {
                        os.close();
                    }
                } finally {
                    lock.releaseLock();
                }
            }
        } finally {
            is.close();
        }
    }

    /**
     * Check if candiate FileObject is a derby database.
     *
     * @param candidate the value of candidate
     * @return true if candidate is a derby database
     */
    public static boolean isDerbyDatabase(FileObject candidate) {
        if (candidate.isFolder()) {
            FileObject sp = candidate.getFileObject("service.properties");
            return sp != null && FileUtil.toFile(sp) != null;
        } else {
            return false;
        }
    }
}

quality94%

¤ Dauer der Verarbeitung: 0.33 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.