jdk/src/share/classes/sun/management/snmp/jvminstr/JvmMemManagerTableMetaImpl.java
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59 * This custom implementation show how to implement an SNMP table |
59 * This custom implementation show how to implement an SNMP table |
60 * over a weak cache, recomputing the cahed data when needed. |
60 * over a weak cache, recomputing the cahed data when needed. |
61 */ |
61 */ |
62 public class JvmMemManagerTableMetaImpl extends JvmMemManagerTableMeta { |
62 public class JvmMemManagerTableMetaImpl extends JvmMemManagerTableMeta { |
63 |
63 |
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64 static final long serialVersionUID = 36176771566817592L; |
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65 |
64 /** |
66 /** |
65 * A concrete implementation of {@link SnmpNamedListTableCache}, for the |
67 * A concrete implementation of {@link SnmpNamedListTableCache}, for the |
66 * jvmMemManagerTable. |
68 * jvmMemManagerTable. |
67 **/ |
69 **/ |
68 private static class JvmMemManagerTableCache |
70 private static class JvmMemManagerTableCache |
69 extends SnmpNamedListTableCache { |
71 extends SnmpNamedListTableCache { |
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72 |
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73 static final long serialVersionUID = 6564294074653009240L; |
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74 |
70 /** |
75 /** |
71 * Create a weak cache for the jvmMemManagerTable. |
76 * Create a weak cache for the jvmMemManagerTable. |
72 * @param validity validity of the cached data, in ms. |
77 * @param validity validity of the cached data, in ms. |
73 **/ |
78 **/ |
74 JvmMemManagerTableCache(long validity) { |
79 JvmMemManagerTableCache(long validity) { |
85 * @param rank The <var>rank</var> of <var>item</var> in the list. |
90 * @param rank The <var>rank</var> of <var>item</var> in the list. |
86 * @param item The <var>rank</var><super>th</super> |
91 * @param item The <var>rank</var><super>th</super> |
87 * <code>MemoryManagerMXBean</code> in the list. |
92 * <code>MemoryManagerMXBean</code> in the list. |
88 * @return <code>((MemoryManagerMXBean)item).getName()</code> |
93 * @return <code>((MemoryManagerMXBean)item).getName()</code> |
89 **/ |
94 **/ |
90 protected String getKey(Object context, List rawDatas, |
95 protected String getKey(Object context, List<?> rawDatas, |
91 int rank, Object item) { |
96 int rank, Object item) { |
92 if (item == null) return null; |
97 if (item == null) return null; |
93 final String name = ((MemoryManagerMXBean)item).getName(); |
98 final String name = ((MemoryManagerMXBean)item).getName(); |
94 log.debug("getKey", "key=" + name); |
99 log.debug("getKey", "key=" + name); |
95 return name; |
100 return name; |
97 |
102 |
98 /** |
103 /** |
99 * Call <code>getTableHandler(JvmContextFactory.getUserData())</code>. |
104 * Call <code>getTableHandler(JvmContextFactory.getUserData())</code>. |
100 **/ |
105 **/ |
101 public SnmpTableHandler getTableHandler() { |
106 public SnmpTableHandler getTableHandler() { |
102 final Map userData = JvmContextFactory.getUserData(); |
107 final Map<Object, Object> userData = JvmContextFactory.getUserData(); |
103 return getTableDatas(userData); |
108 return getTableDatas(userData); |
104 } |
109 } |
105 |
110 |
106 /** |
111 /** |
107 * Return the key used to cache the raw data of this table. |
112 * Return the key used to cache the raw data of this table. |
112 |
117 |
113 /** |
118 /** |
114 * Call ManagementFactory.getMemoryManagerMXBeans() to |
119 * Call ManagementFactory.getMemoryManagerMXBeans() to |
115 * load the raw data of this table. |
120 * load the raw data of this table. |
116 **/ |
121 **/ |
117 protected List loadRawDatas(Map userData) { |
122 protected List<MemoryManagerMXBean> loadRawDatas(Map<Object, Object> userData) { |
118 return ManagementFactory.getMemoryManagerMXBeans(); |
123 return ManagementFactory.getMemoryManagerMXBeans(); |
119 } |
124 } |
120 |
125 |
121 } |
126 } |
122 |
127 |