de.larssh.maven.jarrunner

Class JarRunner

java.lang.Object

de.larssh.maven.jarrunner.JarRunner

public final class JarRunner
extends Object

Launches a new JVM based on a given artifact with optional arguments.

This is the implementation for RunMojo. The work is done by execute().

Constructor Summary

Constructors

Constructor and Description
JarRunner(Parameters parameters) Prepares a command (in form of an internal ProcessBuilder) to launch a new JVM based on a given artifact with optional arguments.

Method Summary

Modifier and Type	Method and Description
void	execute() Launches a new JVM based on the instances command.
String	getCommandLine() Returns a command to launch this JarRunner.
Parameters	getParameters() Parameters object maintaining the injected system objects and user arguments of RunMojo
ProcessBuilder	getProcessBuilder() The command prepared to launch the artifact in a new JVM

Methods inherited from class java.lang.Object

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

Constructor Detail

JarRunner

public JarRunner(Parameters parameters)
          throws org.eclipse.aether.resolution.DependencyResolutionException,
                 org.apache.maven.plugin.MojoFailureException,
                 IOException

Prepares a command (in form of an internal ProcessBuilder) to launch a new JVM based on a given artifact with optional arguments.

The given artifacts dependencies are resolved and a fully qualified class path is created.

The main class to execute can either be specified by argument or is taken from the artifacts JAR.

Parameters:

parameters - the parameters used to create the command

Throws:

org.eclipse.aether.resolution.DependencyResolutionException - if resolving dependencies failed

IOException - if any IO failure occurred

org.apache.maven.plugin.MojoFailureException - either if no main class is given and the artifacts JAR does not contain a main class in its manifest or the started application stopped with an exit value not equal to zero

Method Detail

execute

public void execute()
             throws IOException

Launches a new JVM based on the instances command.

Throws:

IOException - if any IO failure occurred

getCommandLine

public String getCommandLine()

Returns a command to launch this JarRunner.

The results of this method depend on the Operating System, as command line arguments on Unix and Windows are quoted and escaped differently.

Returns:

the escaped command

getParameters

public Parameters getParameters()

Parameters object maintaining the injected system objects and user arguments of RunMojo

Returns:

parameters

getProcessBuilder

public ProcessBuilder getProcessBuilder()

The command prepared to launch the artifact in a new JVM

Returns:

the process builder