1
22
23 package com.liferay.portal.kernel.util;
24
25 import com.liferay.portal.kernel.log.Log;
26 import com.liferay.portal.kernel.log.LogFactoryUtil;
27
28 import java.util.HashMap;
29 import java.util.Map;
30
31
36 public class InstancePool {
37
38 public static boolean contains(String className) {
39 return _instance._contains(className);
40 }
41
42 public static Object get(String className) {
43 return _instance._get(className);
44 }
45
46 public static Object get(String className, boolean logErrors) {
47 return _instance._get(className, logErrors);
48 }
49
50 public static void put(String className, Object obj) {
51 _instance._put(className, obj);
52 }
53
54 private InstancePool() {
55 _classPool = new HashMap<String, Object>();
56 }
57
58 private boolean _contains(String className) {
59 className = className.trim();
60
61 return _classPool.containsKey(className);
62 }
63
64 private Object _get(String className) {
65 return _get(className, true);
66 }
67
68 private Object _get(String className, boolean logErrors) {
69 className = className.trim();
70
71 Object obj = _classPool.get(className);
72
73 if (obj == null) {
74 ClassLoader portalClassLoader =
75 PortalClassLoaderUtil.getClassLoader();
76
77 try {
78 Class<?> classObj = portalClassLoader.loadClass(className);
79
80 obj = classObj.newInstance();
81
82 _put(className, obj);
83 }
84 catch (Exception e1) {
85 if (logErrors && _log.isWarnEnabled()) {
86 _log.warn(
87 "Unable to load " + className +
88 " with the portal class loader",
89 e1);
90 }
91
92 Thread currentThread = Thread.currentThread();
93
94 ClassLoader contextClassLoader =
95 currentThread.getContextClassLoader();
96
97 try {
98 Class<?> classObj = contextClassLoader.loadClass(className);
99
100 obj = classObj.newInstance();
101
102 _put(className, obj);
103 }
104 catch (Exception e2) {
105 if (logErrors) {
106 _log.error(
107 "Unable to load " + className +
108 " with the portal class loader or the " +
109 "current context class loader",
110 e2);
111 }
112 }
113 }
114 }
115
116 return obj;
117 }
118
119 private void _put(String className, Object obj) {
120 className = className.trim();
121
122 _classPool.put(className, obj);
123 }
124
125 private static Log _log = LogFactoryUtil.getLog(InstancePool.class);
126
127 private static InstancePool _instance = new InstancePool();
128
129 private Map<String, Object> _classPool;
130
131 }