001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.geronimo.system.configuration.condition;
018
019 import org.apache.commons.logging.Log;
020 import org.apache.commons.logging.LogFactory;
021
022 /**
023 * Provides access to Java version details for use in condition expressions.
024 *
025 * @version $Rev: 476049 $ $Date: 2006-11-16 23:35:17 -0500 (Thu, 16 Nov 2006) $
026 */
027 public class JavaVariable
028 {
029 private static final Log log = LogFactory.getLog(JavaVariable.class);
030
031 public String getVendor() {
032 return SystemUtils.JAVA_VENDOR;
033 }
034
035 public String getVresion() {
036 return SystemUtils.JAVA_VERSION;
037 }
038
039 public String getVmVendor() {
040 return SystemUtils.JAVA_VM_VENDOR;
041 }
042
043 public String getVmVersion() {
044 return SystemUtils.JAVA_VM_VERSION;
045 }
046
047 public boolean getIs1_1() {
048 return SystemUtils.IS_JAVA_1_1;
049 }
050
051 public boolean getIs1_2() {
052 return SystemUtils.IS_JAVA_1_2;
053 }
054
055 public boolean getIs1_3() {
056 return SystemUtils.IS_JAVA_1_3;
057 }
058
059 public boolean getIs1_4() {
060 return SystemUtils.IS_JAVA_1_4;
061 }
062
063 public boolean getIs1_5() {
064 return SystemUtils.IS_JAVA_1_5;
065 }
066
067 public boolean getIs1_6() {
068 return SystemUtils.IS_JAVA_1_6;
069 }
070
071 public boolean getIsVersionAtLeast(final float requiredVersion) {
072 return SystemUtils.isJavaVersionAtLeast(requiredVersion);
073 }
074
075 public boolean getIsVersionAtLeast(final int requiredVersion) {
076 return SystemUtils.isJavaVersionAtLeast(requiredVersion);
077 }
078
079 public boolean getVersionMatches(String version) {
080 version = version.trim();
081
082 boolean debug = log.isDebugEnabled();
083 boolean result = false;
084
085 if (version.endsWith("*")) {
086 version = version.substring(0, version.length() - 1).trim();
087
088 if (debug) {
089 log.debug("Checking Java version is in the same group as: " + version);
090 }
091
092 String tmp = SystemUtils.JAVA_VERSION_TRIMMED;
093
094 if (debug) {
095 log.debug("Requested version: " + tmp);
096 log.debug("JVM version: " + SystemUtils.JAVA_VERSION_FLOAT);
097 }
098
099 result = tmp.startsWith(version);
100 }
101 else if (version.endsWith("+")) {
102 version = version.substring(0, version.length() - 1).trim();
103
104 if (debug) {
105 log.debug("Checking Java version is greater than: " + version);
106 }
107
108 float tmp = Float.parseFloat(version);
109
110 if (debug) {
111 log.debug("Requested version: " + tmp);
112 log.debug("JVM version: " + SystemUtils.JAVA_VERSION_FLOAT);
113 }
114
115 result = tmp <= SystemUtils.JAVA_VERSION_FLOAT;
116 }
117 else {
118 if (debug) {
119 log.debug("Checking Java version is equal to: " + version);
120 }
121
122 float tmp = Float.parseFloat(version);
123
124 if (debug) {
125 log.debug("Requested version: " + tmp);
126 log.debug("JVM version: " + SystemUtils.JAVA_VERSION_FLOAT);
127 }
128
129 result = tmp == SystemUtils.JAVA_VERSION_FLOAT;
130 }
131
132 return result;
133 }
134 }