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/*******************************************************************************
* Copyright (c) 2010, 2011 Sonatype, 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:
* Sonatype, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.aether.util.repository;
import org.eclipse.aether.repository.Authentication;
import org.eclipse.aether.repository.AuthenticationSelector;
import org.eclipse.aether.repository.RemoteRepository;
/**
* An authentication selector that delegates to another selector but only if a repository has no authentication data
* yet. If authentication has already been assigned to a repository, that is selected.
*/
public final class ConservativeAuthenticationSelector
implements AuthenticationSelector
{
private final AuthenticationSelector selector;
/**
* Creates a new selector that delegates to the specified selector.
*
* @param selector The selector to delegate to in case a repository has no authentication yet, must not be
* {@code null}.
*/
public ConservativeAuthenticationSelector( AuthenticationSelector selector )
{
if ( selector == null )
{
throw new IllegalArgumentException( "no authentication selector specified" );
}
this.selector = selector;
}
public Authentication getAuthentication( RemoteRepository repository )
{
Authentication auth = repository.getAuthentication();
if ( auth != null )
{
return auth;
}
return selector.getAuthentication( repository );
}
}