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1
7 package org.enhydra.dods.cache.base;
8
9 import org.enhydra.dods.DODS;
10 import org.enhydra.dods.cache.CacheConstants;
11
12 import com.lutris.appserver.server.sql.DatabaseManagerException;
13 import com.lutris.appserver.server.sql.standard.StandardLogicalDatabase;
14 import com.lutris.logging.Logger;
15
16
21 public class BaseCacheManager {
22
23 private static DODSCacheAbstractFactory cacheFactory = null;
24
25 public static boolean isCacheManagerConfigured() {
26 return cacheFactory!=null;
27 }
28
29 private static void configureCacheFactory() {
30 String  logicalDbName = null;
31 String cacheFactoryClassName = null;
32 Class cacheFactoryClass = null;
33 try {
34 logicalDbName = DODS.getDatabaseManager().getDefaultDB();
35 cacheFactoryClassName = ((StandardLogicalDatabase)DODS
36 .getDatabaseManager()
37 .findLogicalDatabase(logicalDbName))
38 .getDatabaseConfiguration()
39 .getDodsCacheFactory();
40 if (cacheFactoryClassName != null) {
41 try {
42 cacheFactoryClass = Class.forName(cacheFactoryClassName);
43 cacheFactory = (DODSCacheAbstractFactory)cacheFactoryClass.newInstance();
44 } catch (Exception e) {
45 DODS.getLogChannel()
46 .write(Logger.ERROR,
47 "Failed to make DODSCacheFactory :"
48 + cacheFactoryClassName
49 + " creating "
50 + CacheConstants.DEFAULT_DODS_CACHE_FACTORY
51 + " instead");
52 cacheFactory = null;
53 }
54 }
55 if (cacheFactoryClassName == null || cacheFactory == null) {
56 try {
57 cacheFactoryClass = Class.forName(CacheConstants.DEFAULT_DODS_CACHE_FACTORY);
58 cacheFactory = (DODSCacheAbstractFactory) cacheFactoryClass.newInstance();
59 } catch (Exception e) {
60 String str = "Failed to make "+CacheConstants.DEFAULT_DODS_CACHE_FACTORY;
61 DODS.getLogChannel().write(Logger.CRITICAL, str);
62 throw new Error (str);
63 }
64 }
65 } catch (DatabaseManagerException e){
66 DODS.getLogChannel().write(Logger.CRITICAL,"Failed to make DODSCacheFactory - CRITICAL ERROR");
67 }
68 }
69
70 public static DODSCache getDODSCache(int maxSize) {
71 if(!isCacheManagerConfigured()) {
72 configureCacheFactory();
73 }
74 return cacheFactory.newDODSCache(maxSize);
75 }
76 }
77 |
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