stream.io

Class JSONWriter

java.lang.Object

stream.AbstractProcessor

stream.ConditionedProcessor

stream.io.AbstractWriter

stream.io.JSONWriter

All Implemented Interfaces:

Processor, StatefulProcessor

public class JSONWriter
extends AbstractWriter

This is a simple JSON writer that will write all data items into JSON strings (one line for each item).

Author:

Christian Bockermann <chris@jwall.org>

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static org.slf4j.Logger	log
(package private) PrintStream	p

Fields inherited from class stream.io.AbstractWriter

keys, url

Fields inherited from class stream.ConditionedProcessor

condition

Fields inherited from class stream.AbstractProcessor

context

Constructor Summary

Constructors

Constructor and Description
JSONWriter()
JSONWriter(File file)
JSONWriter(OutputStream out)

Method Summary

Modifier and Type	Method and Description
void	init(ProcessContext ctx)
void	write(Data datum) This method is actually responsible for writing the data item to the output stream in the format that the implementing class supports.

Methods inherited from class stream.io.AbstractWriter

getKeys, getUrl, processMatchingData, selectedKeys, setKeys, setUrl

Methods inherited from class stream.ConditionedProcessor

getCondition, matches, process, setCondition

Methods inherited from class stream.AbstractProcessor

finish, resetState

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

log

static org.slf4j.Logger log

p

PrintStream p

Constructor Detail

JSONWriter

public JSONWriter()

JSONWriter

public JSONWriter(File file)
           throws IOException

Throws:

IOException

JSONWriter

public JSONWriter(OutputStream out)
           throws IOException

Throws:

IOException

Method Detail

init

public void init(ProcessContext ctx)
          throws Exception

Specified by:

init in interface StatefulProcessor

Overrides:

init in class AbstractProcessor

Throws:

Exception

See Also:

AbstractProcessor.init(stream.ProcessContext)

write

public void write(Data datum)

Description copied from class: AbstractWriter

This method is actually responsible for writing the data item to the output stream in the format that the implementing class supports.

Specified by:

write in class AbstractWriter

See Also:

CsvWriter.write(stream.Data)