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/*
* Copyright (C) 2012, 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
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.eclipse.jgit.transport;
import java.util.List;
/**
* {@link org.eclipse.jgit.transport.AdvertiseRefsHook} that delegates to a list
* of other hooks.
* <p>
* Hooks are run in the order passed to the constructor. A hook may inspect or
* modify the results of the previous hooks in the chain by calling
* {@link org.eclipse.jgit.transport.UploadPack#getAdvertisedRefs()}, or
* {@link org.eclipse.jgit.transport.ReceivePack#getAdvertisedRefs()} or
* {@link org.eclipse.jgit.transport.BaseReceivePack#getAdvertisedObjects()}.
*/
public class AdvertiseRefsHookChain implements AdvertiseRefsHook {
private final AdvertiseRefsHook[] hooks;
private final int count;
/**
* Create a new hook chaining the given hooks together.
*
* @param hooks
* hooks to execute, in order.
* @return a new hook chain of the given hooks.
*/
public static AdvertiseRefsHook newChain(List<? extends AdvertiseRefsHook> hooks) {
AdvertiseRefsHook[] newHooks = new AdvertiseRefsHook[hooks.size()];
int i = 0;
for (AdvertiseRefsHook hook : hooks)
if (hook != AdvertiseRefsHook.DEFAULT)
newHooks[i++] = hook;
if (i == 0)
return AdvertiseRefsHook.DEFAULT;
else if (i == 1)
return newHooks[0];
else
return new AdvertiseRefsHookChain(newHooks, i);
}
/** {@inheritDoc} */
@Override
public void advertiseRefs(BaseReceivePack rp)
throws ServiceMayNotContinueException {
for (int i = 0; i < count; i++)
hooks[i].advertiseRefs(rp);
}
/** {@inheritDoc} */
@Override
public void advertiseRefs(UploadPack rp)
throws ServiceMayNotContinueException {
for (int i = 0; i < count; i++)
hooks[i].advertiseRefs(rp);
}
private AdvertiseRefsHookChain(AdvertiseRefsHook[] hooks, int count) {
this.hooks = hooks;
this.count = count;
}
}
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