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/*******************************************************************************
* Copyright (c) 2011 GitHub Inc.
* 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:
* Kevin Sawicki (GitHub Inc.) - initial API and implementation
*******************************************************************************/
package org.eclipse.mylyn.github.internal;
import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
import org.eclipse.core.runtime.Assert;
/**
* Base GitHub service class.
*/
public abstract class GitHubService {
/**
* Client field
*/
protected GitHubClient client;
/**
* Create service for client
*
* @param client
*/
public GitHubService(GitHubClient client) {
Assert.isNotNull(client, "Client cannot be null"); //$NON-NLS-1$
this.client = client;
}
/**
* Get paged request by performing multiple requests until no more pages are
* available of the request collector no longer accepts resource results.
*
* @param <V>
* @param request
* @throws IOException
*/
@SuppressWarnings("unchecked")
protected <V> void getAll(PagedRequest<V> request) throws IOException {
IResourceCollector<V> collector = request.getCollector();
String next = null;
int page = 1;
do {
GitHubResponse response = client.get(request);
Collection<V> resources = null;
Object body = response.getBody();
if (body instanceof Collection)
resources = (Collection<V>) body;
else if (body instanceof IResourceProvider)
resources = ((IResourceProvider<V>) body).getResources();
else
resources = (Collection<V>) Collections.singletonList(body);
if (!collector.accept(page, resources))
break;
next = response.getNext();
if (next != null)
request.setUri(next);
page++;
} while (next != null);
}
}
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