net.orfjackal.retrolambda.maven
Class ProcessMainClassesMojo

java.lang.Object
  org.apache.maven.plugin.AbstractMojo
      net.orfjackal.retrolambda.maven.ProcessMainClassesMojo

All Implemented Interfaces:

org.apache.maven.plugin.ContextEnabled, org.apache.maven.plugin.Mojo

@Mojo(name="process-main",
      defaultPhase=PROCESS_CLASSES,
      requiresDependencyResolution=COMPILE)
public class ProcessMainClassesMojo
extends org.apache.maven.plugin.AbstractMojo

Processes main classes compiled with Java 8 so that they will be compatible with Java 5, 6 or 7 runtime.

Field Summary

boolean	defaultMethods Whether to backport default methods and static methods on interfaces.
boolean	fork Forces Retrolambda to run in a separate process.
File	java8home Directory of the Java 8 installation for running Retrolambda.
File	mainInputDir Directory containing the original classes compiled with Java 8.
File	mainOutputDir Directory where to write the backported classes.
protected org.apache.maven.project.MavenProject	project
boolean	quiet Reduces the amount of logging.
String	target The Java version targeted by the bytecode processing.

Fields inherited from interface org.apache.maven.plugin.Mojo

ROLE

Constructor Summary

ProcessMainClassesMojo()

Method Summary

void	execute()
protected List<String>	getClasspathElements()
protected File	getInputDir()
protected File	getOutputDir()

Methods inherited from class org.apache.maven.plugin.AbstractMojo

getLog, getPluginContext, setLog, setPluginContext

Methods inherited from class java.lang.Object

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

Field Detail

mainInputDir

@Parameter(defaultValue="${project.build.outputDirectory}",
           property="retrolambdaMainInputDir",
           required=true)
public File mainInputDir

Directory containing the original classes compiled with Java 8.

Since:

1.3.0

mainOutputDir

@Parameter(defaultValue="${project.build.outputDirectory}",
           property="retrolambdaMainOutputDir",
           required=true)
public File mainOutputDir

Directory where to write the backported classes. If same as the input directory, will overwrite the original classes.

Since:

1.3.0

project

@Parameter(defaultValue="${project}",
           readonly=true)
protected org.apache.maven.project.MavenProject project

java8home

@Parameter(property="java8home",
           required=false)
public File java8home

Directory of the Java 8 installation for running Retrolambda. The JRE to be used will be determined in priority order:

1. This parameter
2. JDK toolchain
3. Same as Maven

Since:

1.2.0

target

@Parameter(defaultValue="1.7",
           property="retrolambdaTarget",
           required=true)
public String target

The Java version targeted by the bytecode processing. Possible values are 1.5, 1.6, 1.7 and 1.8. After processing the classes will be compatible with the target JVM provided the known limitations are considered. See project documentation for more details.

Since:

1.2.0

defaultMethods

@Parameter(defaultValue="false",
           property="retrolambdaDefaultMethods",
           required=true)
public boolean defaultMethods

Whether to backport default methods and static methods on interfaces. LIMITATIONS: All backported interfaces and all classes which implement them or call their static methods must be backported together, with one execution of Retrolambda.

Since:

2.0.0

quiet

@Parameter(defaultValue="false",
           property="retrolambdaQuiet",
           required=true)
public boolean quiet

Reduces the amount of logging.

Since:

2.4.0

fork

@Parameter(defaultValue="false")
public boolean fork

Forces Retrolambda to run in a separate process. The default is not to fork, in which case Maven has to run under Java 8, or this plugin will fall back to forking. The forked process uses a Java agent hook for capturing the lambda classes generated by Java 8, whereas the non-forked version hooks into internal Java APIs, making it more susceptible to breaking between Java releases.

Since:

1.6.0

Constructor Detail

ProcessMainClassesMojo

public ProcessMainClassesMojo()

Method Detail

getInputDir

protected File getInputDir()

getOutputDir

protected File getOutputDir()

getClasspathElements

protected List<String> getClasspathElements()
                                     throws org.apache.maven.artifact.DependencyResolutionRequiredException

Throws:

org.apache.maven.artifact.DependencyResolutionRequiredException

execute

public void execute()
             throws org.apache.maven.plugin.MojoExecutionException

Throws:

org.apache.maven.plugin.MojoExecutionException