mt.com.southedge.jclockwork.plugin.classloader.JClockWorkClassLoader.java Source code

Introduction

Here is the source code for mt.com.southedge.jclockwork.plugin.classloader.JClockWorkClassLoader.java

Source

/**
 * 
 */
package mt.com.southedge.jclockwork.plugin.classloader;

/* ******************************************************************************
 * Copyright (c) 2011 SouthEdge Software and Consultancy.  
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Carl Frendo - initial design and implementation
 * ******************************************************************************/

import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.internal.core.JavaProject;

/**
 * 
 * @author cfrendo
 * 
 */
public class JClockWorkClassLoader {

    private static JClockWorkClassLoader jClockWorkClassLoader;

    private JClockWorkClassLoader() {

    }

    public static JClockWorkClassLoader getInstance() {
        if (jClockWorkClassLoader == null) {
            jClockWorkClassLoader = new JClockWorkClassLoader();
        }
        return jClockWorkClassLoader;
    }

    /**
     * Creates a class loader including the classes found in the java project. Also adds the binary location to the
     * created class loader.
     * 
     * @param jp the java project
     * @return a class loader.
     * @throws CoreException core exception.
     */
    public ClassLoader createClassLoader(IJavaProject jp) throws CoreException {

        IClasspathEntry[] javacp = jp.getResolvedClasspath(false);
        URL[] url = new URL[javacp.length + 1]; // Need also to add binary location

        for (int i = 0; i < javacp.length; i++) {
            try {
                IPath path = javacp[i].getPath();
                IResource resource = ResourcesPlugin.getWorkspace().getRoot().findMember(path);

                if (resource != null) {
                    path = resource.getLocation();
                }

                url[i] = path.toFile().getAbsoluteFile().toURL();
            } catch (MalformedURLException e) {
                continue;
            }
        }

        IPath binPath = jp.getOutputLocation();
        binPath = ResourcesPlugin.getWorkspace().getRoot().findMember(binPath).getLocation();

        try {
            url[url.length - 1] = binPath.toFile().toURL();
        } catch (MalformedURLException e) {
            // Should not happen.
            e.printStackTrace();
        }
        return new URLClassLoader(url);
    }

    public ClassLoader createClassLoader(IProject project) throws CoreException {
        return createClassLoader(new JavaProject(project, null));
    }
}