public class JdbcInsertBolt extends AbstractJdbcBolt
Basic bolt for writing to any Database table.
Note: Each JdbcInsertBolt defined in a topology is tied to a specific table.collector, configKey, connectionProvider, jdbcClient, queryTimeoutSecs| Constructor and Description |
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JdbcInsertBolt(ConnectionProvider connectionProvider,
JdbcMapper jdbcMapper) |
| Modifier and Type | Method and Description |
|---|---|
void |
declareOutputFields(OutputFieldsDeclarer outputFieldsDeclarer)
Declare the output schema for all the streams of this topology.
|
void |
prepare(Map map,
TopologyContext topologyContext,
OutputCollector collector)
Subclasses should call this to ensure output collector and connection provider are set up, and finally jdbcClient is initialized properly.
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protected void |
process(Tuple tuple)
Process a single non-tick tuple of input.
|
JdbcInsertBolt |
withInsertQuery(String insertQuery) |
JdbcInsertBolt |
withQueryTimeoutSecs(int queryTimeoutSecs) |
JdbcInsertBolt |
withTableName(String tableName) |
cleanupexecute, onTickTuplegetComponentConfigurationclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitgetComponentConfigurationpublic JdbcInsertBolt(ConnectionProvider connectionProvider, JdbcMapper jdbcMapper)
public JdbcInsertBolt withTableName(String tableName)
public JdbcInsertBolt withInsertQuery(String insertQuery)
public JdbcInsertBolt withQueryTimeoutSecs(int queryTimeoutSecs)
public void prepare(Map map, TopologyContext topologyContext, OutputCollector collector)
AbstractJdbcBoltSubclasses should call this to ensure output collector and connection provider are set up, and finally jdbcClient is initialized properly.
Called when a task for this component is initialized within a worker on the cluster. It provides the bolt with the environment in which the bolt executes.
This includes the:
prepare in interface IBoltprepare in class AbstractJdbcBoltmap - The Storm configuration for this bolt. This is the configuration provided to the topology merged in with cluster configuration on this machine.topologyContext - This object can be used to get information about this task’s place within the topology, including the task id and component id of this task, input and output information, etc.collector - The collector is used to emit tuples from this bolt. Tuples can be emitted at any time, including the prepare and cleanup methods. The collector is thread-safe and should be saved as an instance variable of this bolt object.protected void process(Tuple tuple)
BaseTickTupleAwareRichBoltProcess a single non-tick tuple of input. Implementation needs to handle ack manually. More details on IBolt.execute(Tuple).
process in class BaseTickTupleAwareRichBolttuple - The input tuple to be processed.public void declareOutputFields(OutputFieldsDeclarer outputFieldsDeclarer)
IComponentDeclare the output schema for all the streams of this topology.
outputFieldsDeclarer - this is used to declare output stream ids, output fields, and whether or not each output stream is a direct streamCopyright © 2022 The Apache Software Foundation. All Rights Reserved.