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/***************************************************************************
* Copyright (c) 2004 - 2008 Eike Stepper, Germany.
* 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:
* Eike Stepper - initial API and implementation
* Simon McDuff - http://bugs.eclipse.org/226778
**************************************************************************/
package org.eclipse.emf.cdo.common.id;
import org.eclipse.emf.cdo.common.id.CDOID.Type;
import org.eclipse.emf.cdo.common.model.CDOClassRef;
import org.eclipse.emf.cdo.common.model.CDOModelUtil;
import org.eclipse.emf.cdo.internal.common.bundle.OM;
import org.eclipse.emf.cdo.internal.common.id.CDOIDAndVersionImpl;
import org.eclipse.emf.cdo.internal.common.id.CDOIDMetaImpl;
import org.eclipse.emf.cdo.internal.common.id.CDOIDMetaRangeImpl;
import org.eclipse.emf.cdo.internal.common.id.CDOIDTempMetaImpl;
import org.eclipse.emf.cdo.internal.common.id.CDOIDTempObjectImpl;
import org.eclipse.emf.cdo.spi.common.AbstractCDOID;
import org.eclipse.emf.cdo.spi.common.CDOIDLibraryDescriptorImpl;
import org.eclipse.emf.cdo.spi.common.CDOIDLongImpl;
import org.eclipse.net4j.util.ImplementationError;
import org.eclipse.net4j.util.io.ExtendedDataInput;
import org.eclipse.net4j.util.om.trace.ContextTracer;
import java.io.IOException;
/**
* @author Eike Stepper
*/
public final class CDOIDUtil
{
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG_MODEL, CDOIDUtil.class);
private CDOIDUtil()
{
}
public static long getLong(CDOID id)
{
if (id == null)
{
return 0L;
}
switch (id.getType())
{
case NULL:
return 0L;
case OBJECT:
case LEGACY_OBJECT:
if (id instanceof CDOIDLongImpl)
{
return ((CDOIDLongImpl)id).getLongValue();
}
throw new IllegalArgumentException("Unknown CDOIDObject implementation: " + id.getClass().getName());
case META:
return ((CDOIDMeta)id).getLongValue();
case TEMP_META:
case TEMP_OBJECT:
throw new IllegalArgumentException("id instanceof CDOIDTemp");
default:
throw new ImplementationError();
}
}
public static CDOIDTemp createTempMeta(int value)
{
return new CDOIDTempMetaImpl(value);
}
public static CDOIDTemp createTempObject(int value)
{
return new CDOIDTempObjectImpl(value);
}
public static CDOID createLong(long value)
{
if (value == 0L)
{
return CDOID.NULL;
}
return new CDOIDLongImpl(value);
}
/**
* Format of the URI fragment.
* <p>
* Non-legacy: <code><ID TYPE>/<CUSTOM STRING FROM OBJECT FACTORY></code>
* <p>
* Legacy: <code><ID TYPE>/<PACKAGE URI>/<CLASSIFIER ID>/<CUSTOM STRING FROM OBJECT FACTORY></code>
*
* @since 2.0
*/
public static CDOID read(String uriFragment, CDOIDObjectFactory factory)
{
byte ordinal = Byte.valueOf(uriFragment.substring(0, 1));
if (TRACER.isEnabled())
{
try
{
String type = Type.values()[ordinal].toString();
TRACER.format("Reading CDOID of type {0} ({1})", ordinal, type);
}
catch (RuntimeException ex)
{
TRACER.trace(ex);
}
}
Type type = Type.values()[ordinal];
String fragment = uriFragment.substring(2);
switch (type)
{
case NULL:
return CDOID.NULL;
case TEMP_OBJECT:
return new CDOIDTempObjectImpl(Integer.valueOf(fragment));
case TEMP_META:
return new CDOIDTempMetaImpl(Integer.valueOf(fragment));
case META:
return new CDOIDMetaImpl(Long.valueOf(fragment));
case OBJECT:
{
CDOIDObject id = factory.createCDOIDObject(fragment);
((AbstractCDOID)id).read(fragment);
return id;
}
case LEGACY_OBJECT:
{
int packageIndex = fragment.indexOf("/");
String packageURI = fragment.substring(0, packageIndex);
int classifierIndex = fragment.indexOf("/", packageIndex + 1);
String strClassifier = fragment.substring(packageIndex, classifierIndex);
int classifierID = Integer.valueOf(strClassifier);
CDOClassRef cdoClassRef = CDOModelUtil.createClassRef(packageURI, classifierID);
CDOIDObject id = factory.createCDOIDObject(fragment.substring(classifierIndex + 1));
((AbstractCDOID)id).read(fragment);
return id.asLegacy(cdoClassRef);
}
default:
throw new IllegalArgumentException("Invalid ID type : " + uriFragment);
}
}
/**
* Format of the uri fragment.
* <p>
* Non-legacy: <code><ID TYPE>/<CUSTOM STRING FROM OBJECT FACTORY></code>
* <p>
* Legacy: <code><ID TYPE>/<PACKAGE URI>/<CLASSIFIER ID>/<CUSTOM STRING FROM OBJECT FACTORY></code>
*
* @since 2.0
*/
public static void write(StringBuilder builder, CDOID id)
{
if (id == null)
{
id = CDOID.NULL;
}
Type type = id.getType();
int ordinal = type.ordinal();
if (TRACER.isEnabled())
{
TRACER.format("Writing CDOID of type {0} ({1})", ordinal, type);
}
builder.append(ordinal);
switch (type)
{
case NULL:
case TEMP_OBJECT:
case TEMP_META:
case META:
case OBJECT:
break;
case LEGACY_OBJECT:
CDOIDObject legacy = (CDOIDObject)id;
builder.append("/" + legacy.getClassRef().getPackageURI());
builder.append("/" + legacy.getClassRef().getClassifierID());
break;
default:
throw new ImplementationError();
}
builder.append("/" + id.asString());
}
public static CDOIDMeta createMeta(long value)
{
return new CDOIDMetaImpl(value);
}
public static CDOIDMetaRange createMetaRange(CDOID lowerBound, int count)
{
return new CDOIDMetaRangeImpl(lowerBound, count);
}
public static CDOIDLibraryDescriptor readLibraryDescriptor(ExtendedDataInput in) throws IOException
{
return new CDOIDLibraryDescriptorImpl(in);
}
public static CDOIDAndVersion createIDAndVersion(CDOID id, int version)
{
return new CDOIDAndVersionImpl(id, version);
}
}
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