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/***************************************************************************
* Copyright (c) 2004 - 2009 Eike Stepper (Berlin, Germany) and others.
* 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:
* Simon McDuff - initial API and implementation
* Eike Stepper - maintenance
**************************************************************************/
package org.eclipse.emf.cdo.util;
import org.eclipse.emf.cdo.common.id.CDOID;
import org.eclipse.emf.cdo.common.id.CDOIDUtil;
import org.eclipse.emf.cdo.common.protocol.CDOProtocolConstants;
import org.eclipse.emf.cdo.internal.common.id.CDOIDExternalImpl;
import org.eclipse.emf.cdo.session.CDOSession;
import org.eclipse.emf.cdo.view.CDOView;
import org.eclipse.emf.common.util.URI;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
/**
* @author Simon McDuff
* @since 2.0
*/
public class CDOURIUtil
{
public static final char SEGMENT_SEPARATOR_CHAR = '/';
public static final String SEGMENT_SEPARATOR = new String(new char[] { SEGMENT_SEPARATOR_CHAR });
public static void validateURI(URI uri) throws InvalidURIException
{
if (!CDOProtocolConstants.PROTOCOL_NAME.equals(uri.scheme()))
{
throw new InvalidURIException(uri);
}
if (!uri.isHierarchical())
{
throw new InvalidURIException(uri);
}
}
public static String extractRepositoryUUID(URI uri)
{
try
{
validateURI(uri);
if (!uri.hasAuthority())
{
throw new InvalidURIException(uri);
}
return uri.authority();
}
catch (InvalidURIException ex)
{
return null;
}
}
public static String[] extractResourceFolderAndName(URI uri) throws InvalidURIException
{
String path = extractResourcePath(uri);
int lastSeparator = path.lastIndexOf(SEGMENT_SEPARATOR_CHAR);
if (lastSeparator == -1)
{
return new String[] { null, path };
}
String folder = path.substring(0, lastSeparator);
String name = path.substring(lastSeparator + 1);
return new String[] { folder, name };
}
public static String extractResourcePath(URI uri) throws InvalidURIException
{
validateURI(uri);
String path = uri.path();
if (path == null)
{
return SEGMENT_SEPARATOR;
}
return path;
}
/**
* <p>
* cdo://repositoryUUID/path
* <p>
* The path is added at the end of "cdo://repositoryUUID". If path doesn't start with '/', it will be added
* automatically. <br>
* e.g.: /resA or resA will give the same result -> cdo://repositoryUUID/resA <br>
* authority = repositoryUUID <br>
* path = /resA
*/
public static URI createResourceURI(String repositoryUUID, String path)
{
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append(CDOProtocolConstants.PROTOCOL_NAME);
stringBuilder.append(":");
if (repositoryUUID != null)
{
stringBuilder.append("//");
stringBuilder.append(repositoryUUID);
}
if (!SEGMENT_SEPARATOR.equals(path))
{
if (path.charAt(0) != SEGMENT_SEPARATOR_CHAR)
{
stringBuilder.append(SEGMENT_SEPARATOR_CHAR);
}
stringBuilder.append(path);
}
return URI.createURI(stringBuilder.toString());
}
public static URI createResourceURI(CDOView view, String path)
{
return createResourceURI(view == null ? null : view.getSession(), path);
}
public static URI createResourceURI(CDOSession session, String path)
{
return createResourceURI(session == null ? null : session.repository().getUUID(), path);
}
/**
* Converting temporary CDOID to External CDOID <br>
* e.g.: <br>
* baseURI = cdo://2a57dfcf-8f97-4d39-8e17-9d99ae5c4b3c/resB#5/2<br>
* newCDOID = OID2<br>
* return = cdo://2a57dfcf-8f97-4d39-8e17-9d99ae5c4b3c/resB#1/2
*/
public static CDOID convertExternalCDOID(URI baseURI, CDOID newCDOID)
{
StringBuilder builder = new StringBuilder();
CDOIDUtil.write(builder, newCDOID);
baseURI = baseURI.trimFragment().appendFragment(builder.toString());
return new CDOIDExternalImpl(baseURI.toString());
}
public static List<String> analyzePath(URI uri)
{
String path = extractResourcePath(uri);
return analyzePath(path);
}
public static List<String> analyzePath(String path)
{
List<String> segments = new ArrayList<String>();
StringTokenizer tokenizer = new StringTokenizer(path, CDOURIUtil.SEGMENT_SEPARATOR);
while (tokenizer.hasMoreTokens())
{
String name = tokenizer.nextToken();
if (name != null)
{
segments.add(name);
}
}
return segments;
}
}
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