stream.io

Class ProcessStream

java.lang.Object

stream.io.AbstractStream

stream.io.AbstractLineStream

stream.io.ProcessStream

All Implemented Interfaces:

Source, Stream

public class ProcessStream
extends AbstractLineStream

Author:

chris

Field Summary

Fields

Modifier and Type	Field and Description
protected String	command
protected Stream	dataStream
protected Class<? extends Stream>	dataStreamClass
protected String	format
(package private) static org.slf4j.Logger	log
protected Process	process

Fields inherited from class stream.io.AbstractLineStream

attributes, encoding, reader

Fields inherited from class stream.io.AbstractStream

closed, count, id, in, limit, prefix, seqId, sequenceKey, url

Fields inherited from interface stream.io.Stream

SOURCE_KEY

Constructor Summary

Constructors

Constructor and Description
ProcessStream()

Method Summary

Modifier and Type	Method and Description
void	close()
String	getCommand()
String	getFormat()
void	init()
Data	readNext()
void	setCommand(String command)
void	setFormat(String format)

Methods inherited from class stream.io.AbstractLineStream

getEncoding, readLine, setEncoding

Methods inherited from class stream.io.AbstractStream

getId, getInputStream, getLimit, getPrefix, getSequenceKey, getUrl, read, setId, setLimit, setPrefix, setSequenceKey, setUrl

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

process

protected Process process

dataStream

protected Stream dataStream

dataStreamClass

protected Class<? extends Stream> dataStreamClass

format

protected String format

command

protected String command

Constructor Detail

ProcessStream

public ProcessStream()

Parameters:

url -

Method Detail

getCommand

public String getCommand()

Returns:

the command

setCommand

@Parameter(required=true,
           description="The command to execute. This command will be spawned and is assumed to output data to standard output.")
public void setCommand(String command)

Parameters:

command - the command to set

getFormat

public String getFormat()

Returns:

the format

init

public void init()
          throws Exception

Specified by:

init in interface Source

Overrides:

init in class AbstractLineStream

Throws:

Exception

See Also:

Source.init()

setFormat

@Parameter(required=true,
           values={"stream.io.CsvStream","stream.io.SvmLight","stream.io.JSONStream","stream.io.LineStream"},
           defaultValue="stream.io.CsvStream",
           description="The format of the input (standard input), defaults to CSV")
public void setFormat(String format)

Parameters:

format - the format to set

readNext

public Data readNext()
              throws Exception

Specified by:

readNext in class AbstractStream

Throws:

Exception

See Also:

Source.read()

close

public void close()

Specified by:

close in interface Source

Overrides:

close in class AbstractLineStream

See Also:

Source.close()