Java Code Examples for java.util.concurrent.ConcurrentHashMap#keys()
The following examples show how to use
java.util.concurrent.ConcurrentHashMap#keys() .
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Example 1
Source File: CacheUtil.java From FHIR with Apache License 2.0 | 6 votes |
/** * Takes the contents of one of the JDBC PL caches and represents the contents in a format suitable for logging. * @param cacheName - The name of the JDBC PL cache to be dumped. * @param mapOfMaps - The contents of the multi-datastore cache. * @return String - A formatted representation of the cache contents. */ public static String dumpCacheContents(String cacheName, ConcurrentHashMap<String,ConcurrentHashMap<String,Integer>> mapOfMaps) { String cacheKey; Enumeration<String> cacheKeys = mapOfMaps.keys(); ConcurrentHashMap<String,Integer> dbCache; StringBuffer dumpedCache = new StringBuffer(); dumpedCache.append(NEWLINE).append("Contents of ").append(cacheName).append(NEWLINE); while(cacheKeys.hasMoreElements()) { cacheKey = cacheKeys.nextElement(); dbCache = mapOfMaps.get(cacheKey); dumpedCache.append(cacheName).append(" for datastoreid: " + cacheKey).append(NEWLINE); dumpedCache.append(dbCache.toString().replaceAll(",", NEWLINE)).append(NEWLINE); } return dumpedCache.toString(); }
Example 2
Source File: KhanSessionManager.java From khan-session with GNU Lesser General Public License v2.1 | 6 votes |
/** * Cleanup all sessions * */ public void cleanup() { ConcurrentHashMap<String, Long> sessionIds = sessionIdStore.getSessionStore(appName); Enumeration<String> keys = sessionIds.keys(); while (keys.hasMoreElements()) { String key = keys.nextElement(); String storeMetaKey = KhanSessionKeyGenerator.generate(khanSessionConfig.getNamespace(), key, KhanHttpSession.METADATA_KEY); String storeAttrKey = KhanSessionKeyGenerator.generate(khanSessionConfig.getNamespace(), key, KhanHttpSession.ATTRIBUTES_KEY); if( log.isDebugEnabled() ) { log.debug("key=" + key); log.debug("storeMetaKey=" + storeMetaKey); log.debug("storeAttrKey=" + storeAttrKey); } Object attr = sessionStore.get(storeAttrKey); Object meta = sessionStore.get(storeMetaKey); if( log.isDebugEnabled() ) { log.debug("attr,meta=" + attr + "," + meta); } if (attr == null && meta == null) { sessionIds.remove(key); } } }
Example 3
Source File: ParameterDynamicZookeeper.java From DDMQ with Apache License 2.0 | 5 votes |
private void syncFromZooKeeper() throws ZkException, IOException { ConcurrentHashMap<String/*zk path*/, Set<IZkDataListener>> listeners = zkClient.getDataListener(); Enumeration<String> paths = listeners.keys(); while (paths.hasMoreElements()) { String path = paths.nextElement(); initPathData(path); } }
Example 4
Source File: ParameterDynamicZookeeper.java From DDMQ with Apache License 2.0 | 5 votes |
private void syncFromZooKeeper() throws ZkException, IOException { ConcurrentHashMap<String/*zk path*/, Set<IZkDataListener>> listeners = zkClient.getDataListener(); Enumeration<String> paths = listeners.keys(); while (paths.hasMoreElements()) { String path = paths.nextElement(); initPathData(path); } }
Example 5
Source File: ConcurrentHashMapTest.java From openjdk-jdk9 with GNU General Public License v2.0 | 5 votes |
/** * keys returns an enumeration containing all the keys from the map */ public void testKeys() { ConcurrentHashMap map = map5(); Enumeration e = map.keys(); int count = 0; while (e.hasMoreElements()) { count++; e.nextElement(); } assertEquals(5, count); }
Example 6
Source File: HashJoin.java From rya with Apache License 2.0 | 5 votes |
@Override public CloseableIteration<RyaIRI, RyaDAOException> join(C conf, Map.Entry<RyaIRI, RyaType>... predObjs) throws RyaDAOException { ConcurrentHashMap<RyaIRI, Integer> ht = new ConcurrentHashMap<RyaIRI, Integer>(); int count = 0; boolean first = true; for (Map.Entry<RyaIRI, RyaType> predObj : predObjs) { count++; RyaIRI pred = predObj.getKey(); RyaType obj = predObj.getValue(); //query CloseableIteration<RyaStatement, RyaDAOException> results = ryaQueryEngine.query(new RyaStatement(null, pred, obj), null); //add to hashtable while (results.hasNext()) { RyaIRI subject = results.next().getSubject(); if (!first) { if (!ht.containsKey(subject)) { continue; //not in join } } ht.put(subject, count); } //remove from hashtable values that are under count if (first) { first = false; } else { for (Map.Entry<RyaIRI, Integer> entry : ht.entrySet()) { if (entry.getValue() < count) { ht.remove(entry.getKey()); } } } } return new EnumerationWrapper<RyaIRI, RyaDAOException>(ht.keys()); }
Example 7
Source File: ConcurrentHashMapTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * keys returns an enumeration containing all the keys from the map */ public void testKeys() { ConcurrentHashMap map = map5(); Enumeration e = map.keys(); int count = 0; while (e.hasMoreElements()) { count++; e.nextElement(); } assertEquals(5, count); }
Example 8
Source File: LoggingRegistry.java From pentaho-kettle with Apache License 2.0 | 5 votes |
/** * Helper Method that determines a LogChannelFileWriterBuffer invoked by getLogChannelFileWriterBuffer and returns 1. * @param possibleWriters Map to search from. * @return LogChannelFileWriterBuffer, null if could not be determined. */ private LogChannelFileWriterBuffer determineLogChannelFileWriterBuffer( ConcurrentHashMap<LogChannelFileWriterBuffer, List<String>> possibleWriters ) { // Just one writer so just return it if ( possibleWriters.size() == 1 ) { return possibleWriters.keys().nextElement(); } else { // Several possibilities, so, lets get the writer among them that is the "lowest in the chain", // meaning, the one that is not a parent of the others Enumeration<LogChannelFileWriterBuffer> possibleWritersIds = possibleWriters.keys(); while ( possibleWritersIds.hasMoreElements() ) { LogChannelFileWriterBuffer writer = possibleWritersIds.nextElement(); for ( Map.Entry<LogChannelFileWriterBuffer, List<String>> entry : possibleWriters.entrySet() ) { if ( entry.getKey().equals( writer ) ) { continue; } if ( !entry.getValue().contains( writer.getLogChannelId() ) ) { return entry.getKey(); } } } } return null; }
Example 9
Source File: LongConcurrentHashMapWrap.java From jane with GNU Lesser General Public License v3.0 | 4 votes |
private KeyIterator(ConcurrentHashMap<Long, V> map) { it = map.keys(); }