org.eclipse.aether.internal.impl.Utils Maven / Gradle / Ivy

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/*******************************************************************************
 * Copyright (c) 2010, 2012 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.internal.impl;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.artifact.Artifact;
import org.eclipse.aether.impl.MetadataGenerator;
import org.eclipse.aether.impl.MetadataGeneratorFactory;
import org.eclipse.aether.metadata.Metadata;
import org.eclipse.aether.repository.RemoteRepository;
import org.eclipse.aether.resolution.ResolutionErrorPolicy;
import org.eclipse.aether.resolution.ResolutionErrorPolicyRequest;

/**
 */
final class Utils
{

    private static final Comparator COMPARATOR = new Comparator()
    {

        public int compare( MetadataGeneratorFactory o1, MetadataGeneratorFactory o2 )
        {
            return Float.compare( o2.getPriority(), o1.getPriority() );
        }

    };

    public static List sortMetadataGeneratorFactories( Collection factories )
    {
        List result = new ArrayList( factories );
        Collections.sort( result, COMPARATOR );
        return result;
    }

    public static List prepareMetadata( List generators, List artifacts )
    {
        List metadatas = new ArrayList();

        for ( MetadataGenerator generator : generators )
        {
            metadatas.addAll( generator.prepare( artifacts ) );
        }

        return metadatas;
    }

    public static List finishMetadata( List generators, List artifacts )
    {
        List metadatas = new ArrayList();

        for ( MetadataGenerator generator : generators )
        {
            metadatas.addAll( generator.finish( artifacts ) );
        }

        return metadatas;
    }

    public static  List combine( Collection first, Collection second )
    {
        List result = new ArrayList( first.size() + second.size() );
        result.addAll( first );
        result.addAll( second );
        return result;
    }

    public static int getPolicy( RepositorySystemSession session, Artifact artifact, RemoteRepository repository )
    {
        ResolutionErrorPolicy rep = session.getResolutionErrorPolicy();
        if ( rep == null )
        {
            return ResolutionErrorPolicy.CACHE_DISABLED;
        }
        return rep.getArtifactPolicy( session, new ResolutionErrorPolicyRequest( artifact, repository ) );
    }

    public static int getPolicy( RepositorySystemSession session, Metadata metadata, RemoteRepository repository )
    {
        ResolutionErrorPolicy rep = session.getResolutionErrorPolicy();
        if ( rep == null )
        {
            return ResolutionErrorPolicy.CACHE_DISABLED;
        }
        return rep.getMetadataPolicy( session, new ResolutionErrorPolicyRequest( metadata, repository ) );
    }

}