/*
* Copyright (C) 2011, Google Inc.
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* - Neither the name of the Eclipse Foundation, Inc. nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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package org.eclipse.jgit.storage.dht.spi.memory;
import java.text.MessageFormat;
import java.util.concurrent.TimeoutException;
import org.eclipse.jgit.storage.dht.DhtException;
import org.eclipse.jgit.storage.dht.DhtText;
import org.eclipse.jgit.storage.dht.RepositoryKey;
import org.eclipse.jgit.storage.dht.RepositoryName;
import org.eclipse.jgit.storage.dht.spi.RepositoryIndexTable;
import org.eclipse.jgit.storage.dht.spi.memory.MemTable.Cell;
import org.eclipse.jgit.storage.dht.spi.util.ColumnMatcher;
final class MemRepositoryIndexTable implements RepositoryIndexTable {
private final MemTable table = new MemTable();
private final ColumnMatcher colId = new ColumnMatcher("id");
public RepositoryKey get(RepositoryName name) throws DhtException,
TimeoutException {
Cell cell = table.get(name.asBytes(), colId.name());
if (cell == null)
return null;
return RepositoryKey.fromBytes(cell.getValue());
}
public void putUnique(RepositoryName name, RepositoryKey key)
throws DhtException, TimeoutException {
boolean ok = table.compareAndSet( //
name.asBytes(), //
colId.name(), //
null, //
key.asBytes());
if (!ok)
throw new DhtException(MessageFormat.format(
DhtText.get().repositoryAlreadyExists, name.asString()));
}
public void remove(RepositoryName name, RepositoryKey key)
throws DhtException, TimeoutException {
boolean ok = table.compareAndSet(
name.asBytes(),
colId.name(),
key.asBytes(),
null);
if (!ok)
throw new DhtException(MessageFormat.format(
DhtText.get().repositoryAlreadyExists, name.asString()));
}
}