| /* |
| * 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 <b>true</b> if the current implementation is IBM. |
| */ |
| public boolean isIBM() { |
| return _vendor == IBM; |
| } |
| |
| /** |
| * This static worker method returns <b>true</b> if the current implementation is Sun. |
| */ |
| public boolean isSun() { |
| return _vendor == SUN; |
| } |
| |
| public String getVirtualMachineClassName() { |
| return _virtualMachineClass; |
| } |
| } |