/**
* Initializes default class loader. It inherits from classloader, which was used to load this
* task, therefore build-in classes and resources are loaded automatically.
*
* <p>Notice: task's classpath has priority over default classpath, therefore we are able to
* easily override resources (templates)
*/
protected void initClassloader() {
// NOTICE: we should use the same classloader, which was used to load this task
// otherwise we won't be able to cast instances
// (that were loaded via different class loaders)
// we are introducting workaround,
// that tries to add classpath for current task to original class loader
// and stores original classpath
// after the task is executed, classpath is restored
ClassLoader classLoader = getClass().getClassLoader();
if (classLoader instanceof AntClassLoader) {
// add defined classpath
AntClassLoader antClassLoader = (AntClassLoader) classLoader;
antClassLoader.setParentFirst(false);
antClassLoader.setProject(getProject());
savedClasspath = antClassLoader.getClasspath();
Path cp = getClasspath();
// add defined classpath to original path
cp.add(new Path(getProject(), savedClasspath));
antClassLoader.setClassPath(cp);
} else {
// create new class loader
classLoader =
new AntClassLoader(getClass().getClassLoader(), getProject(), getClasspath(), false);
}
// set this class loader as new class loader for whole thread
// ContextClassLoader is used in StringTemplate's PathGroupLoader and other classes
Thread.currentThread().setContextClassLoader(classLoader);
}
public Runnable createTargetInstance(Target target, Properties localProperties, Logger logger) {
// System.out.println("DefaultProjectModel.createTargetInstance");
AntClassLoader loader = null;
DefaultResources resources;
try {
org.apache.tools.ant.types.Path classPath = toAntPath(resolvePathGroup(target, "classpath"));
// Allow additional classes to added to the plugin classpath. This is primarily designed to
// allow the additional of instrumented testing classes and libraries for code coverage of
// integration
// tests with Cobertura
String key = "quokka.classpath." + target.getPlugin().getArtifact().getId().getGroup();
if (log.isDebugEnabled()) {
log.debug("Searching for additional classpath with key: " + key);
}
String additionalPath = System.getProperty(key);
if ((additionalPath != null) && !additionalPath.trim().equals("")) {
org.apache.tools.ant.types.Path existing = classPath;
classPath = new org.apache.tools.ant.types.Path(antProject, additionalPath);
log.verbose("Prefixing classpath with: " + classPath);
classPath.append(existing); // Make sure additions override existing
}
if ("true".equals(antProject.getProperty("quokka.project.debugclassloaders"))) {
loader =
new QuokkaLoader(target, antProject.getClass().getClassLoader(), antProject, classPath);
} else {
loader = antProject.createClassLoader(classPath);
}
loader.setParent(antProject.getCoreLoader());
loader.setParentFirst(true);
loader.setIsolated(false);
loader.setThreadContextLoader();
// Initialise this plugin
Plugin plugin = target.getPlugin();
loader.forceLoadClass(plugin.getClassName());
Class pluginClass = Class.forName(plugin.getClassName(), true, loader);
ws.quokka.core.plugin_spi.Plugin actualPlugin =
(ws.quokka.core.plugin_spi.Plugin) pluginClass.newInstance();
if (actualPlugin instanceof MetadataAware) {
((MetadataAware) actualPlugin).setMetadata(getMetadata());
}
if (actualPlugin instanceof ResourcesAware) {
resources = new DefaultResources(this, target, antProject, logger);
((ResourcesAware) actualPlugin).setResources(resources);
}
if (actualPlugin instanceof RepositoryAware) {
((RepositoryAware) actualPlugin).setRepository(getRepository());
}
if (actualPlugin instanceof RepositoryFactoryAware) {
((RepositoryFactoryAware) actualPlugin)
.setRepositoryFactory(
(RepositoryFactory) antProject.getReference(ProjectHelper.REPOSITORY_FACTORY));
}
if (actualPlugin instanceof ResolverAware) {
((ResolverAware) actualPlugin).setResolver(pathResolver);
}
if (actualPlugin instanceof ModelFactoryAware) {
((ModelFactoryAware) actualPlugin).setModelFactory(getModelFactory());
}
actualPlugin.initialise();
return actualPlugin.getTarget(
(target.getTemplateName() != null) ? target.getTemplateName() : target.getName());
} catch (Exception e) {
throw new BuildException(e);
} finally {
if (loader != null) {
loader.resetThreadContextLoader();
loader.cleanup();
}
}
}
