Module datarush.library

Package com.pervasive.datarush.operators.io.vectorwise

Class LocalCommandRunner

java.lang.Object

com.pervasive.datarush.operators.io.vectorwise.LocalCommandRunner

All Implemented Interfaces:

CommandRunner

public class LocalCommandRunner
extends Object
implements CommandRunner

Run a command on the local machine using a locally started process.

Constructor Summary

Constructors

Constructor	Description
LocalCommandRunner()

Method Summary

Modifier and Type	Method	Description
void	dispose()	Clean up any resources that were acquired to execute shell commands.
void	initialize()	Initialization required before executing a command.
int	runCommand(List<String> args, InputStream stdIn, OutputStream stdOut, OutputStream stdErr)	Run the specified command.

Methods inherited from class java.lang.Object

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

Constructor Detail

LocalCommandRunner

public LocalCommandRunner()

Method Detail

initialize

public void initialize()

Description copied from interface: CommandRunner

Initialization required before executing a command.

Specified by:

initialize in interface CommandRunner

runCommand

public int runCommand(List<String> args,
                      InputStream stdIn,
                      OutputStream stdOut,
                      OutputStream stdErr)
               throws IOException

Description copied from interface: CommandRunner

Run the specified command. The given input stream is passed to the command as it's standard input. The standard output and standard error are captured in the given output streams. The exit code of the command as passed by the execution shell is returned.

Specified by:

runCommand in interface CommandRunner

Parameters:

args - list of arguments for the command line execution

stdIn - input stream used as standard in

stdOut - output stream that captures standard out

stdErr - output stream that captures standard err

Returns:

exit code of the shell command

Throws:

IOException - thrown if any errors occur

dispose

public void dispose()

Description copied from interface: CommandRunner

Clean up any resources that were acquired to execute shell commands. This method should always be called even if any errors occur running shell commands.

Specified by:

dispose in interface CommandRunner