HCatClient { public abstract String getMessageBusTopicName(String dbName, String tableName) throws HCatException;  static HCatClient create(Configuration conf); abstract List<String> listDatabaseNamesByPattern(String pattern); abstract HCatDatabase getDatabase(String dbName); abstract void createDatabase(HCatCreateDBDesc dbInfo); abstract void dropDatabase(String dbName, boolean ifExists,
                    DropDBMode mode); abstract List<String> listTableNamesByPattern(String dbName, String tablePattern); abstract HCatTable getTable(String dbName, String tableName); abstract void createTable(HCatCreateTableDesc createTableDesc); abstract void updateTableSchema(String dbName, String tableName, List<HCatFieldSchema> columnSchema); abstract void createTableLike(String dbName, String existingTblName,
                     String newTableName, boolean ifNotExists, boolean isExternal,
                     String location); abstract void dropTable(String dbName, String tableName,
                   boolean ifExists); abstract void renameTable(String dbName, String oldName,
                   String newName); abstract List<HCatPartition> getPartitions(String dbName, String tblName); abstract List<HCatPartition> getPartitions(String dbName, String tblName, Map<String, String> partitionSpec); abstract HCatPartition getPartition(String dbName, String tableName,
                         Map<String, String> partitionSpec); abstract void addPartition(HCatAddPartitionDesc partInfo); abstract int addPartitions(List<HCatAddPartitionDesc> partInfoList); abstract void dropPartitions(String dbName, String tableName,
                    Map<String, String> partitionSpec, boolean ifExists); abstract List<HCatPartition> listPartitionsByFilter(String dbName, String tblName,
                                 String filter); abstract void markPartitionForEvent(String dbName, String tblName,
                         Map<String, String> partKVs, PartitionEventType eventType); abstract boolean isPartitionMarkedForEvent(String dbName, String tblName,
                            Map<String, String> partKVs, PartitionEventType eventType); abstract String getDelegationToken(String owner,
                        String renewerKerberosPrincipalName); abstract long renewDelegationToken(String tokenStrForm); abstract void cancelDelegationToken(String tokenStrForm); abstract String getMessageBusTopicName(String dbName, String tableName); abstract void close(); static final String HCAT_CLIENT_IMPL_CLASS; }
@Test public void testGetMessageBusTopicName() throws Exception { try { HCatClient client = HCatClient.create(new Configuration(hcatConf)); String dbName = "testGetMessageBusTopicName_DBName"; String tableName = "testGetMessageBusTopicName_TableName"; client.dropDatabase(dbName, true, HCatClient.DropDBMode.CASCADE); client.createDatabase(HCatCreateDBDesc.create(dbName).build()); String messageBusTopicName = "MY.topic.name"; Map<String, String> tableProperties = new HashMap<String, String>(1); tableProperties.put(HCatConstants.HCAT_MSGBUS_TOPIC_NAME, messageBusTopicName); client.createTable(HCatCreateTableDesc.create(dbName, tableName, Arrays.asList(new HCatFieldSchema("foo", Type.STRING, ""))).tblProps(tableProperties).build()); assertEquals("MessageBus topic-name doesn't match!", messageBusTopicName, client.getMessageBusTopicName(dbName, tableName)); client.dropDatabase(dbName, true, HCatClient.DropDBMode.CASCADE); client.close(); } catch (Exception exception) { LOG.error("Unexpected exception.", exception); assertTrue("Unexpected exception:" + exception.getMessage(), false); } }