IN
- Type of the elements emitted by this sink, it must extend Tuple
public class CassandraTupleSink<IN extends Tuple> extends CassandraSinkBase<IN,com.datastax.driver.core.ResultSet>
Constructor and Description |
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CassandraTupleSink(String insertQuery,
ClusterBuilder builder) |
Modifier and Type | Method and Description |
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void |
open(Configuration configuration)
Initialization method for the function.
|
com.google.common.util.concurrent.ListenableFuture<com.datastax.driver.core.ResultSet> |
send(IN value) |
close, invoke
getIterationRuntimeContext, getRuntimeContext, setRuntimeContext
public CassandraTupleSink(String insertQuery, ClusterBuilder builder)
public void open(Configuration configuration)
RichFunction
The configuration object passed to the function can be used for configuration and initialization. The configuration contains all parameters that were configured on the function in the program composition.
public class MyMapper extends FilterFunction<String> {
private String searchString;
public void open(Configuration parameters) {
this.searchString = parameters.getString("foo");
}
public boolean filter(String value) {
return value.equals(searchString);
}
}
By default, this method does nothing.
open
in interface RichFunction
open
in class CassandraSinkBase<IN extends Tuple,com.datastax.driver.core.ResultSet>
configuration
- The configuration containing the parameters attached to the contract.Configuration
public com.google.common.util.concurrent.ListenableFuture<com.datastax.driver.core.ResultSet> send(IN value)
send
in class CassandraSinkBase<IN extends Tuple,com.datastax.driver.core.ResultSet>
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