PluginImpl.java

package hudson.plugins.svncompat13;

import hudson.Plugin;

import java.io.File;
import java.util.Collection;
import java.util.Iterator;
import java.util.TreeSet;

import org.tmatesoft.svn.core.SVNException;
import org.tmatesoft.svn.core.internal.wc.admin.ISVNAdminAreaFactorySelector;
import org.tmatesoft.svn.core.internal.wc.admin.SVNAdminAreaFactory;

/**
 * Plugin that allows SVNKit to be compatible with Subversion 1.3. All
 * Subversion operations in Hudson go through SVNKit, which creates working copy
 * only compatible with Subversion 1.4 by default. See SVNKit FAQ for more
 * details.
 * 
 * @author <a href="mailto:jbq@caraldi.com">Jean-Baptiste Quenot</a>
 * @plugin
 */
public class PluginImpl extends Plugin {
	@Override
	public void start() throws Exception {
		SVNAdminAreaFactory.setSelector(new ISVNAdminAreaFactorySelector() {
			public Collection getEnabledFactories(File path,
					Collection factories, boolean writeAccess)
					throws SVNException {
				Collection<SVNAdminAreaFactory> enabledFactories = new TreeSet<SVNAdminAreaFactory>();
				for (Iterator factoriesIter = factories.iterator(); factoriesIter
						.hasNext();) {
					SVNAdminAreaFactory factory = (SVNAdminAreaFactory) factoriesIter
							.next();
					if (factory.getSupportedVersion() == WC_FORMAT_13) {
						enabledFactories.add(factory);
					}
				}
				return enabledFactories;
			}
		});

		System.out.println("SVNKit is now compatible with Subversion 1.3");
	}

    // taken from org.tmatesoft.svn.core.internal.wc.admin.SVNXMLAdminAreaFactory.WC_FORMAT
    // as it's not public
    private static final int WC_FORMAT_13 = 4;
}