io.vertx.cassandra

Interface CassandraRowStream

All Superinterfaces:

ReadStream<com.datastax.oss.driver.api.core.cql.Row>, StreamBase

public interface CassandraRowStream
extends ReadStream<com.datastax.oss.driver.api.core.cql.Row>

A ReadStream for Row consumption.

Author:

Pavel Drankou, Thomas Segismont

Method Summary

Modifier and Type	Method and Description
com.datastax.oss.driver.api.core.cql.ColumnDefinitions	columnDefinitions() Get the ColumnDefinitions provided by the backing ResultSet for this stream.
CassandraRowStream	endHandler(Handler<Void> handler) Set an end handler.
CassandraRowStream	exceptionHandler(Handler<Throwable> handler) Set an exception handler on the read stream.
com.datastax.oss.driver.api.core.cql.ExecutionInfo	executionInfo() Get the ExectionInfo provided by the backing ResultSet for this stream.
CassandraRowStream	fetch(long l) Fetch the specified amount of elements.
CassandraRowStream	handler(Handler<com.datastax.oss.driver.api.core.cql.Row> handler) Set a data handler.
CassandraRowStream	pause() Pause the ReadStream, it sets the buffer in fetch mode and clears the actual demand.
default Future<Void>	pipeTo(WriteStream<com.datastax.oss.driver.api.core.cql.Row> dst) Same as ReadStream.pipeTo(WriteStream, Handler) but returns a Future of the asynchronous result
default void	pipeTo(WriteStream<com.datastax.oss.driver.api.core.cql.Row> dst, Handler<AsyncResult<Void>> handler) Pipe this ReadStream to the WriteStream.
CassandraRowStream	resume() Resume reading, and sets the buffer in flowing mode.

Methods inherited from interface io.vertx.core.streams.ReadStream

collect, pipe

Method Detail

exceptionHandler

CassandraRowStream exceptionHandler(Handler<Throwable> handler)

Description copied from interface: ReadStream

Set an exception handler on the read stream.

Specified by:

exceptionHandler in interface ReadStream<com.datastax.oss.driver.api.core.cql.Row>

Specified by:

exceptionHandler in interface StreamBase

Parameters:

handler - the exception handler

Returns:

a reference to this, so the API can be used fluently

handler

CassandraRowStream handler(Handler<com.datastax.oss.driver.api.core.cql.Row> handler)

Description copied from interface: ReadStream

Set a data handler. As data is read, the handler will be called with the data.

Specified by:

handler in interface ReadStream<com.datastax.oss.driver.api.core.cql.Row>

Returns:

a reference to this, so the API can be used fluently

pause

CassandraRowStream pause()

Description copied from interface: ReadStream

Pause the ReadStream, it sets the buffer in fetch mode and clears the actual demand.

While it's paused, no data will be sent to the data handler.

Specified by:

pause in interface ReadStream<com.datastax.oss.driver.api.core.cql.Row>

Returns:

a reference to this, so the API can be used fluently

resume

CassandraRowStream resume()

Description copied from interface: ReadStream

Resume reading, and sets the buffer in flowing mode.

If the ReadStream has been paused, reading will recommence on it.

Specified by:

resume in interface ReadStream<com.datastax.oss.driver.api.core.cql.Row>

Returns:

a reference to this, so the API can be used fluently

endHandler

CassandraRowStream endHandler(Handler<Void> handler)

Description copied from interface: ReadStream

Set an end handler. Once the stream has ended, and there is no more data to be read, this handler will be called.

Specified by:

endHandler in interface ReadStream<com.datastax.oss.driver.api.core.cql.Row>

Returns:

a reference to this, so the API can be used fluently

fetch

CassandraRowStream fetch(long l)

Description copied from interface: ReadStream

Fetch the specified amount of elements. If the ReadStream has been paused, reading will recommence with the specified amount of items, otherwise the specified amount will be added to the current stream demand.

Specified by:

fetch in interface ReadStream<com.datastax.oss.driver.api.core.cql.Row>

Returns:

a reference to this, so the API can be used fluently

pipeTo

default Future<Void> pipeTo(WriteStream<com.datastax.oss.driver.api.core.cql.Row> dst)

Description copied from interface: ReadStream

Same as ReadStream.pipeTo(WriteStream, Handler) but returns a Future of the asynchronous result

Specified by:

pipeTo in interface ReadStream<com.datastax.oss.driver.api.core.cql.Row>

pipeTo

default void pipeTo(WriteStream<com.datastax.oss.driver.api.core.cql.Row> dst,
                    Handler<AsyncResult<Void>> handler)

Description copied from interface: ReadStream

Pipe this ReadStream to the WriteStream.

Elements emitted by this stream will be written to the write stream until this stream ends or fails.

Once this stream has ended or failed, the write stream will be ended and the handler will be called with the result.

Specified by:

pipeTo in interface ReadStream<com.datastax.oss.driver.api.core.cql.Row>

Parameters:

dst - the destination write stream

executionInfo

com.datastax.oss.driver.api.core.cql.ExecutionInfo executionInfo()

Get the ExectionInfo provided by the backing ResultSet for this stream.

columnDefinitions

com.datastax.oss.driver.api.core.cql.ColumnDefinitions columnDefinitions()

Get the ColumnDefinitions provided by the backing ResultSet for this stream.