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1
45
46 package org.openejb.loader;
47
48 import java.util.Properties  ;
49 import java.util.HashMap ;
50
51 import org.openejb.util.FileUtils;
52
53
63 public class SystemInstance {
64
65 private final long startTime = System.currentTimeMillis();
66 private final Properties properties;
67 private final FileUtils home;
68 private final FileUtils base;
69 private final ClassLoader classLoader;
70 private final HashMap components;
71 private final ClassPath classPath;
72
73 private SystemInstance(Properties properties) throws Exception {
74 this.components = new HashMap ();
75 this.properties = new Properties ();
76 this.properties.putAll(System.getProperties());
77 this.properties.putAll(properties);
78
79 this.home = new FileUtils("openejb.home", "user.dir", this.properties);
80 this.base = new FileUtils("openejb.base", "openejb.home", this.properties);
81 this.classPath = ClassPathFactory.createClassPath(this.properties.getProperty("openejb.loader", "context"));
82 this.classLoader = classPath.getClassLoader();
83
84
86 this.properties.setProperty("openejb.home", home.getDirectory().getCanonicalPath());
87 this.properties.setProperty("openejb.base", base.getDirectory().getCanonicalPath());
88 }
89
90
91 public long getStartTime() {
92 return startTime;
93 }
94
95 public Properties getProperties() {
96 return properties;
97 }
98
99 public String getProperty(String key) {
100 return properties.getProperty(key);
101 }
102
103 public String getProperty(String key, String defaultValue) {
104 return properties.getProperty(key, defaultValue);
105 }
106
107 public Object setProperty(String key, String value) {
108 return properties.setProperty(key, value);
109 }
110
111 public FileUtils getHome() {
112 return home;
113 }
114
115 public FileUtils getBase() {
116 return base;
117 }
118
119 public ClassPath getClassPath() {
120 return classPath;
121 }
122
123 public ClassLoader getClassLoader() {
124 return classLoader;
125 }
126
127 public Object getObject(String name) {
128 return components.get(name);
129 }
130
131 public Object setObject(String name, Object value) {
132 return components.put(name, value);
133 }
134
135
139 private static SystemInstance system;
140 static {
141 try {
142 system = new SystemInstance(System.getProperties());
143 } catch (Exception e) {
144 throw new RuntimeException ("Failed to create default instance of SystemInstance",e);
145 }
146 }
147 private static boolean initialized;
148 public static void init(Properties properties) throws Exception {
149 if (initialized) return;
150 system = new SystemInstance(properties);
151 initialized = true;
152 }
153
154 public static SystemInstance get(){
155 return system;
156 }
157
158 }
159 |
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