/*
|
* CDDL HEADER START
|
*
|
* The contents of this file are subject to the terms of the
|
* Common Development and Distribution License, Version 1.0 only
|
* (the "License"). You may not use this file except in compliance
|
* with the License.
|
*
|
* You can obtain a copy of the license at
|
* trunk/opends/resource/legal-notices/OpenDS.LICENSE
|
* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
|
* See the License for the specific language governing permissions
|
* and limitations under the License.
|
*
|
* When distributing Covered Code, include this CDDL HEADER in each
|
* file and include the License file at
|
* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
|
* add the following below this CDDL HEADER, with the fields enclosed
|
* by brackets "[]" replaced with your own identifying information:
|
* Portions Copyright [yyyy] [name of copyright owner]
|
*
|
* CDDL HEADER END
|
*
|
*
|
* Portions Copyright 2007 Sun Microsystems, Inc.
|
*/
|
package org.opends.server.replication.plugin;
|
|
import java.util.ArrayList;
|
import java.util.Iterator;
|
import java.util.LinkedHashSet;
|
|
import org.opends.server.replication.common.ChangeNumber;
|
import org.opends.server.types.Attribute;
|
import org.opends.server.types.AttributeValue;
|
import org.opends.server.types.Entry;
|
import org.opends.server.types.Modification;
|
import org.opends.server.types.ModificationType;
|
|
/**
|
* This classes is used to store historical information for single valued
|
* attributes.
|
* One object of this type is created for each attribute that was changed in
|
* the entry.
|
* It allows to record the last time a given value was added,
|
* and the last time the whole attribute was deleted.
|
*/
|
public class AttrInfoSingle extends AttributeInfo
|
{
|
private ChangeNumber deleteTime = null; // last time when the attribute was
|
// deleted
|
private ChangeNumber addTime = null; // last time when a value was added
|
private AttributeValue value = null; // last added value
|
|
/**
|
* {@inheritDoc}
|
*/
|
@Override
|
public ChangeNumber getDeleteTime()
|
{
|
return deleteTime;
|
}
|
|
/**
|
* {@inheritDoc}
|
*/
|
@Override
|
public ArrayList<ValueInfo> getValuesInfo()
|
{
|
if (addTime == null)
|
{
|
return new ArrayList<ValueInfo>();
|
}
|
else
|
{
|
ArrayList<ValueInfo> values = new ArrayList<ValueInfo>();
|
values.add(new ValueInfo(value, addTime, null));
|
return values;
|
}
|
}
|
|
/**
|
* {@inheritDoc}
|
*/
|
@Override
|
public void processLocalOrNonConflictModification(ChangeNumber changeNumber,
|
Modification mod)
|
{
|
Attribute modAttr = mod.getAttribute();
|
LinkedHashSet<AttributeValue> values = null;
|
if (modAttr != null)
|
values = modAttr.getValues();
|
AttributeValue newValue = null;
|
if (values.size() != 0)
|
newValue = values.iterator().next();
|
|
switch (mod.getModificationType())
|
{
|
case DELETE:
|
deleteTime = changeNumber;
|
value = newValue;
|
break;
|
|
case ADD:
|
addTime = changeNumber;
|
value = newValue;
|
break;
|
|
case REPLACE:
|
if (newValue == null)
|
{
|
// REPLACE with null value is actually a DELETE
|
deleteTime = changeNumber;
|
}
|
else
|
{
|
deleteTime = addTime = changeNumber;
|
}
|
value = newValue;
|
break;
|
|
case INCREMENT:
|
/* FIXME : we should update ChangeNumber */
|
break;
|
}
|
}
|
|
/**
|
* {@inheritDoc}
|
*/
|
@Override
|
public boolean replayOperation(Iterator<Modification> modsIterator,
|
ChangeNumber changeNumber, Entry modifiedEntry, Modification mod)
|
{
|
boolean conflict = false;
|
|
Attribute modAttr = mod.getAttribute();
|
LinkedHashSet<AttributeValue> values = null;
|
if (modAttr != null)
|
values = modAttr.getValues();
|
AttributeValue newValue = null;
|
if (values.size() != 0)
|
newValue = values.iterator().next();
|
|
switch (mod.getModificationType())
|
{
|
case DELETE:
|
if ((changeNumber.newer(addTime)) &&
|
((newValue == null) || ((newValue != null)
|
&& (newValue.equals(value)))))
|
{
|
deleteTime = changeNumber;
|
}
|
else
|
{
|
conflict = true;
|
modsIterator.remove();
|
}
|
break;
|
|
case ADD:
|
if (changeNumber.newerOrEquals(deleteTime) && changeNumber.older(addTime))
|
{
|
conflict = true;
|
mod.setModificationType(ModificationType.REPLACE);
|
addTime = changeNumber;
|
value = newValue;
|
}
|
else
|
{
|
if (changeNumber.newerOrEquals(deleteTime)
|
&& ((addTime == null ) || addTime.older(deleteTime)))
|
{
|
// no conflict : don't do anything beside setting the addTime
|
addTime = changeNumber;
|
value = newValue;
|
}
|
else
|
{
|
conflict = true;
|
modsIterator.remove();
|
}
|
}
|
|
break;
|
|
case REPLACE:
|
if ((changeNumber.older(deleteTime)) && (changeNumber.older(deleteTime)))
|
{
|
conflict = true;
|
modsIterator.remove();
|
}
|
else
|
{
|
if (newValue == null)
|
{
|
value = newValue;
|
deleteTime = changeNumber;
|
}
|
else
|
{
|
addTime = changeNumber;
|
value = newValue;
|
deleteTime = changeNumber;
|
}
|
}
|
break;
|
|
case INCREMENT:
|
/* FIXME : we should update ChangeNumber */
|
break;
|
}
|
return conflict;
|
}
|
|
/**
|
* {@inheritDoc}
|
*/
|
@Override
|
public void load(HistKey histKey, AttributeValue value, ChangeNumber cn)
|
{
|
switch (histKey)
|
{
|
case ADD:
|
addTime = cn;
|
this.value = value;
|
break;
|
|
case DEL:
|
deleteTime = cn;
|
if (value != null)
|
this.value = value;
|
break;
|
|
case REPL:
|
addTime = deleteTime = cn;
|
if (value != null)
|
this.value = value;
|
break;
|
|
case DELATTR:
|
deleteTime = cn;
|
break;
|
}
|
}
|
}
|
