--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/org/tmatesoft/hg/internal/remote/ConnectorBase.java	Thu Aug 08 19:18:50 2013 +0200
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 2013 TMate Software Ltd
+ *  
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * For information on how to redistribute this software under
+ * the terms of a license other than GNU General Public License
+ * contact TMate Software at support@hg4j.com
+ */
+package org.tmatesoft.hg.internal.remote;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.URI;
+import java.util.Collection;
+import java.util.List;
+
+import org.tmatesoft.hg.auth.HgAuthFailedException;
+import org.tmatesoft.hg.core.HgRemoteConnectionException;
+import org.tmatesoft.hg.core.Nodeid;
+import org.tmatesoft.hg.core.SessionContext;
+import org.tmatesoft.hg.repo.HgRemoteRepository.RemoteDescriptor;
+import org.tmatesoft.hg.repo.HgRuntimeException;
+import org.tmatesoft.hg.repo.HgRemoteRepository.Range;
+
+/**
+ * An abstract base class for {@link Connector} implementations,
+ * to keep binary compatibility once {@link Connector} interface changes.
+ * 
+ * <p>Provides default implementation for {@link #getServerLocation()} that hides user credentials from uri, if any
+ * 
+ * <p>Present method implementations are not expected to be invoked and do nothing, this may change in future to return 
+ * reasonable error objects. New methods, added to {@link Connector}, will get default implementation in this class as well.
+ * 
+ * @author Artem Tikhomirov
+ * @author TMate Software Ltd.
+ */
+public abstract class ConnectorBase implements Connector {
+	protected URI uri;
+	
+	protected ConnectorBase() {
+	}
+	
+	protected void setURI(URI uri) {
+		this.uri = uri;
+	}
+
+	// clients may invoke this method, or call #setURI(URI) directly
+	public void init(RemoteDescriptor remote, SessionContext sessionContext, Object globalConfig) throws HgRuntimeException {
+		setURI(remote.getURI());
+	}
+
+	public String getServerLocation() {
+		if (uri == null) {
+			return "";
+		}
+		if (uri.getUserInfo() == null) {
+			return uri.toString();
+		}
+		if (uri.getPort() != -1) {
+			return String.format("%s://%s:%d%s", uri.getScheme(), uri.getHost(), uri.getPort(), uri.getPath());
+		} else {
+			return String.format("%s://%s%s", uri.getScheme(), uri.getHost(), uri.getPath());
+		}
+	}
+
+	public void connect() throws HgAuthFailedException, HgRemoteConnectionException, HgRuntimeException {
+	}
+
+	public void disconnect() throws HgRemoteConnectionException, HgRuntimeException {
+	}
+
+	public void sessionBegin() throws HgRemoteConnectionException, HgRuntimeException {
+	}
+
+	public void sessionEnd() throws HgRemoteConnectionException, HgRuntimeException {
+	}
+
+	public String getCapabilities() throws HgRemoteConnectionException, HgRuntimeException {
+		return null;
+	}
+
+	public InputStream heads() throws HgRemoteConnectionException, HgRuntimeException {
+		return null;
+	}
+
+	public InputStream between(Collection<Range> ranges) throws HgRemoteConnectionException, HgRuntimeException {
+		return null;
+	}
+
+	public InputStream branches(List<Nodeid> nodes) throws HgRemoteConnectionException, HgRuntimeException {
+		return null;
+	}
+
+	public InputStream changegroup(List<Nodeid> roots) throws HgRemoteConnectionException, HgRuntimeException {
+		return null;
+	}
+
+	public OutputStream unbundle(long outputLen, List<Nodeid> remoteHeads) throws HgRemoteConnectionException, HgRuntimeException {
+		return null;
+	}
+
+	public InputStream pushkey(String opName, String namespace, String key, String oldValue, String newValue) throws HgRemoteConnectionException, HgRuntimeException {
+		return null;
+	}
+
+	public InputStream listkeys(String namespace, String actionName) throws HgRemoteConnectionException, HgRuntimeException {
+		return null;
+	}
+}