有什么办法列出特定缓存中存在的所有表并列出Apache Ignite Server上存在的所有缓存?
- - - - - - - - - - - - - - - - - 更新 - - - - - - - - -----------嗨,我正在运行以下代码来了解缓存名称并列出缓存中存在的所有表。该程序列出了服务器上存在的所有缓存名称。但是,表列表被打印为空白集合。同时示例中出现的SQL查询工作正常。
public static void main(String[] args) throws Exception {
System.out.println("Run Spring example!!");
Ignition.setClientMode(true);
IgniteConfiguration cfg = new IgniteConfiguration();
cfg.setIncludeEventTypes( EVTS_CACHE);
cfg.setPeerClassLoadingEnabled(true);
TcpDiscoveryMulticastIpFinder discoveryMulticastIpFinder = new TcpDiscoveryMulticastIpFinder();
Set<String> set = new HashSet<>();
set.add("hostname:47500..47509");
discoveryMulticastIpFinder.setAddresses(set);
TcpDiscoverySpi discoverySpi = new TcpDiscoverySpi();
discoverySpi.setIpFinder(discoveryMulticastIpFinder);
cfg.setDiscoverySpi(discoverySpi);
cfg.setPeerClassLoadingEnabled(true);
cfg.setIncludeEventTypes(EVTS_CACHE);
Ignite ignite = Ignition.start(cfg);
System.out.println("All Available Cache on server : "+ignite.cacheNames());
CacheConfiguration<String, BinaryObject> cacheConfiguration = new CacheConfiguration<>(CACHE_NAME);
Collection<QueryEntity> entities = cacheConfiguration.getQueryEntities();
System.out.println("All available tables in cache : "+entities);
cacheConfiguration.setIndexedTypes(String.class, BinaryObject.class);
//cacheConfiguration.setCacheMode(CacheMode.PARTITIONED);
IgniteCache<String, BinaryObject> cache = ignite.getOrCreateCache(cacheConfiguration).withKeepBinary();
System.out.println();
QueryCursor<List<?>> query = cache.query(new SqlFieldsQuery("select Field1 from table1 where Field1='TEST'"));
List<List<?>> all = query.getAll();
for (List<?> l : all) {
System.out.println(l);
}
}
获取所有缓存名称:Ignite.cacheNames()
。然后使用Ignite.cache(String)
获取缓存实例。
获取SQL表:
CacheConfiguration ccfg = cache.getConfiguration(CacheConfiguration.class);
Collection<QueryEntity> entities = ccfg.getQueryEntities();
每个查询实体代表一个表。
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