com.diffplug.gradle.eclipserunner

Class EclipseApp

java.lang.Object

com.diffplug.gradle.eclipserunner.EclipseApp

Direct Known Subclasses:

EclipseApp.AntRunner, FeaturesAndBundlesPublisher, P2Model.DirectorApp, Repo2Runnable

public class EclipseApp
extends Object

Models an eclipse utility application and all of its input state.

Specifically targets utilities which are only available as eclipse applications, such as org.eclipse.ant.core.antRunner or org.eclipse.equinox.p2.director.

To run an EclipseApp, call runUsing(EclipseRunner) and pass an EclipseRunner instance.

EclipseApp p2director = new EclipseApp("org.eclipse.equinox.p2.director");
p2director.addArg("repository", "http://somerepo");
p2director.addArg("destination", "file://somefile");
p2director.addArg("installIU", "org.eclipse.jdt");
p2director.addArg("installIU", "org.eclipse.text");
p2director.runUsing(new NativeRunner(eclipseLauncherExe));

will turn into

eclipsec.exe -application org.eclipse.equinox.p2.director
    -repository http://somerepo
    -destination file://somefile
    -installIU org.eclipse.jdt,org.eclipse.text

Staleness

Many of these applications are deterministic - if you pass them the same inputs, they generate the same outputs.

To build fast staleness checking, use completeState() to get a String which contains the full state of the application.

State besides arguments

Sometimes, running an eclipse utility application includes state besides its console arguments, such as the input build.xml for org.eclipse.ant.core.antRunner.

Ideally, this state should be included within the EclipseApp instance. This can be accomplished by overriding EclipseApp.AntRunner.runUsing(EclipseRunner), setting up any state that the application requires, and cleaning up the state after it has completed.

See EclipseApp.AntRunner for an example.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	EclipseApp.AntRunner Models the org.eclipse.ant.core.antRunner application, including its build.xml.

Field Summary

Fields

Modifier and Type	Field and Description
protected com.diffplug.common.collect.ListMultimap<String,String>	args

Constructor Summary

Constructors

Constructor and Description
EclipseApp(String application) Creates an EclipseApp which will call the given application, such as org.eclipse.ant.core.antRunner or org.eclipse.equinox.p2.director

Method Summary

Modifier and Type	Method and Description
void	addArg(String key) addArg("flag") will add “-flag” to command line.
void	addArg(String key, String value) addArg("flag", "value") will add -flag value to command line.
void	clean() Any cached data used by the OSGi framework and eclipse runtime will be wiped clean.
String	completeState() Writes out the entire state of this argsbuilder to a string.
void	consolelog() Any log output is also sent to Java’s System.out (typically back to the command shell if any).
void	runUsing(EclipseRunner runner) Runs this app using the given runner.
protected List<String>	toArgList() Returns the args.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

args

protected final com.diffplug.common.collect.ListMultimap<String,String> args

Constructor Detail

EclipseApp

public EclipseApp(String application)

Creates an EclipseApp which will call the given application, such as org.eclipse.ant.core.antRunner or org.eclipse.equinox.p2.director

Method Detail

runUsing

public void runUsing(EclipseRunner runner)
              throws Exception

Runs this app using the given runner.

Throws:

Exception

completeState

public String completeState()

Writes out the entire state of this argsbuilder to a string. This can be used to determine if the arguments have changed at all, to aid in staleness checking.

If you extend EclipseArgsBuilder and add any kinds of new state (e.g. EclipseAntArgsBuilder), then you must override this method and embed all internal state within it.

toString

public String toString()

Overrides:

toString in class Object

addArg

public void addArg(String key,
                   String value)

addArg("flag", "value") will add -flag value to command line.

addArg("flag", "A")
addArg("flag", "B")

will add -flag A,B to the command line.

addArg

public void addArg(String key)

addArg("flag") will add “-flag” to command line.

toArgList

protected List<String> toArgList()

Returns the args.

clean

public void clean()

Any cached data used by the OSGi framework and eclipse runtime will be wiped clean. This will clean the caches used to store bundle dependency resolution and eclipse extension registry data. Using this option will force eclipse to reinitialize these caches.

consolelog

public void consolelog()

Any log output is also sent to Java’s System.out (typically back to the command shell if any).