org.sventon.service.SVNProvider.java Source code

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Here is the source code for org.sventon.service.SVNProvider.java

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/*
 * ====================================================================
 * Copyright (c) 2005-2012 sventon project. All rights reserved.
 *
 * This software is licensed as described in the file LICENSE, which
 * you should have received as part of this distribution. The terms
 * are also available at http://www.sventon.org.
 * If newer versions of this license are posted there, you may use a
 * newer version instead, at your option.
 * ====================================================================
 */
package org.sventon.service;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.sventon.ConfigDirectoryFactory;
import org.sventon.SVNConnectionFactory;

import java.util.ServiceLoader;

/**
 * Represents a Subversion provider, eg. <i>svnjavahl</i> and <i>SVNKit</i>.
 */
public abstract class SVNProvider {

    /**
     * Logger for this class and subclasses.
     */
    private static final Log LOGGER = LogFactory.getLog(SVNProvider.class);

    /**
     * @param configDirectoryFactory Factory
     * @return Connection factory
     */
    public abstract SVNConnectionFactory getConnectionFactory(final ConfigDirectoryFactory configDirectoryFactory);

    /**
     * @return Service
     */
    public abstract RepositoryService getRepositoryService();

    /**
     * Loads the first available SVN provider on the classpath.
     *
     * @return Loaded SVN provider
     */
    public static SVNProvider loadProvider() {
        final ServiceLoader<SVNProvider> loader = ServiceLoader.load(SVNProvider.class);
        for (SVNProvider svnProvider : loader) {
            LOGGER.info("Found SVNProvider: " + svnProvider.getClass());
            return svnProvider;
        }
        throw new IllegalStateException("Unable to find a SVNProvider");
    }

}