org.apache.openjpa.lib.util.JavaVendors Maven / Gradle / Ivy
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* 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.apache.openjpa.lib.util;
import java.security.AccessController;
import java.util.Locale;
/**
* Utilities for dealing with different Java vendors.
*/
public enum JavaVendors {
IBM("com.ibm.tools.attach.VirtualMachine"), SUN("com.sun.tools.attach.VirtualMachine"),
// When in doubt, try the Sun implementation.
OTHER("com.sun.tools.attach.VirtualMachine");
static {
String vendor =
AccessController.doPrivileged(J2DoPrivHelper.getPropertyAction("java.vendor", "")).toUpperCase(Locale.ENGLISH);
if (vendor.contains("SUN MICROSYSTEMS")) {
_vendor = SUN;
} else if (vendor.contains("IBM")) {
_vendor = IBM;
} else {
_vendor = OTHER;
}
}
private static final JavaVendors _vendor;
private String _virtualMachineClass = null;
private JavaVendors(String vmClass) {
_virtualMachineClass = vmClass;
}
/**
* This static worker method returns the current Vendor.
*/
public static JavaVendors getCurrentVendor() {
return _vendor;
}
/**
* This static worker method returns true if the current implementation is IBM.
*/
public boolean isIBM() {
return _vendor == IBM;
}
/**
* This static worker method returns true if the current implementation is Sun.
*/
public boolean isSun() {
return _vendor == SUN;
}
public String getVirtualMachineClassName() {
return _virtualMachineClass;
}
}