JavaPlatformCache.java

/*
 * Copyright (c) 2007, 2013, 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.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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
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package com.sun.tools.visualvm.profiler;

import java.util.prefs.Preferences;
import org.netbeans.lib.profiler.global.Platform;
import org.openide.util.NbPreferences;

/**
 *
 * @author Jiri Sedlacek
 */
final class JavaPlatformCache {
    
    static void setBinary(String java, String arch, String binary) {
        preferences().put(java + arch, binary);
    }
    
    static String getBinary(String java, String arch) {
        // Read cached Java binary
        String binary = preferences().get(java + arch, null);
        
        // Try to get 64bit/32bit binary if arch doesn't matter
        if (binary == null && arch == null) { // NOI18N
            binary = getBinary(java, "64"); // NOI18N
            if (binary == null) binary = getBinary(java, "32"); // NOI18N
        }
        
        // Set current Java binary if compatible with provided settings
        if (binary == null) {
            if (arch == null || arch.equals(Integer.toString(Platform.getSystemArchitecture()))) {
                if (Platform.getJDKVersionString().equals(java))
                    binary = JavaInfo.getCurrentJDKExecutable();
            }
        }
        
        // Return the resolved binary
        return binary;
    }
    
    static void clearBinary(String java, String arch) {
        preferences().remove(java + arch);
    }
    
    private static Preferences preferences() {
        return NbPreferences.forModule(JavaPlatformCache.class);
    }
    
    private JavaPlatformCache() {}
    
}