org.hibernate.testing.junit4.ClassLoadingIsolater Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.testing.junit4;
import org.junit.rules.MethodRule;
import org.junit.runners.model.FrameworkMethod;
import org.junit.runners.model.Statement;
/**
* @author Steve Ebersole
*/
public class ClassLoadingIsolater implements MethodRule {
public static interface IsolatedClassLoaderProvider {
public ClassLoader buildIsolatedClassLoader();
public void releaseIsolatedClassLoader(ClassLoader isolatedClassLoader);
}
private final IsolatedClassLoaderProvider provider;
public ClassLoadingIsolater(IsolatedClassLoaderProvider provider) {
this.provider = provider;
}
@Override
public Statement apply(final Statement base, FrameworkMethod method, Object target) {
return new Statement() {
@Override
public void evaluate() throws Throwable {
final ClassLoader isolatedClassLoader = provider.buildIsolatedClassLoader();
final ClassLoader originalTCCL = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader( isolatedClassLoader );
try {
base.evaluate();
}
finally {
Thread.currentThread().setContextClassLoader( originalTCCL );
provider.releaseIsolatedClassLoader( isolatedClassLoader );
}
}
};
}
}