org.jsonschema2pojo.maven.ProjectClasspath Maven / Gradle / Ivy
/**
* Copyright © 2010-2017 Nokia
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jsonschema2pojo.maven;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.ArrayList;
import java.util.List;
import org.apache.maven.artifact.DependencyResolutionRequiredException;
import org.apache.maven.plugin.logging.Log;
import org.apache.maven.project.MavenProject;
/**
* Represents the classpath built from a maven project's dependencies.
*/
public class ProjectClasspath {
/**
* Provides a class loader that can be used to load classes from this
* project classpath.
*
* @param project
* the maven project currently being built
* @param parent
* a classloader which should be used as the parent of the newly
* created classloader.
* @param log
* object to which details of the found/loaded classpath elements
* can be logged.
*
* @return a classloader that can be used to load any class that is
* contained in the set of artifacts that this project classpath is
* based on.
* @throws DependencyResolutionRequiredException
* if maven encounters a problem resolving project dependencies
*/
public ClassLoader getClassLoader(MavenProject project, final ClassLoader parent, Log log) throws DependencyResolutionRequiredException {
@SuppressWarnings("unchecked")
List classpathElements = project.getCompileClasspathElements();
final List classpathUrls = new ArrayList<>(classpathElements.size());
for (String classpathElement : classpathElements) {
try {
log.debug("Adding project artifact to classpath: " + classpathElement);
classpathUrls.add(new File(classpathElement).toURI().toURL());
} catch (MalformedURLException e) {
log.debug("Unable to use classpath entry as it could not be understood as a valid URL: " + classpathElement, e);
}
}
return AccessController.doPrivileged(new PrivilegedAction() {
@Override
public ClassLoader run() {
return new URLClassLoader(classpathUrls.toArray(new URL[classpathUrls.size()]), parent);
}
});
}
}