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package org.eclipse.aether.transfer;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *  http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import org.eclipse.aether.artifact.Artifact;
import org.eclipse.aether.artifact.ArtifactProperties;
import org.eclipse.aether.repository.RemoteRepository;

/**
 * Thrown when an artifact was not found in a particular repository.
 */
public class ArtifactNotFoundException
    extends ArtifactTransferException
{

    /**
     * Creates a new exception with the specified artifact and repository.
     * 
     * @param artifact The missing artifact, may be {@code null}.
     * @param repository The involved remote repository, may be {@code null}.
     */
    public ArtifactNotFoundException( Artifact artifact, RemoteRepository repository )
    {
        super( artifact, repository, getMessage( artifact, repository ) );
    }

    private static String getMessage( Artifact artifact, RemoteRepository repository )
    {
        StringBuilder buffer = new StringBuilder( 256 );
        buffer.append( "Could not find artifact " ).append( artifact );
        buffer.append( getString( " in ", repository ) );
        if ( artifact != null )
        {
            String localPath = artifact.getProperty( ArtifactProperties.LOCAL_PATH, null );
            if ( localPath != null && repository == null )
            {
                buffer.append( " at specified path " ).append( localPath );
            }
            String downloadUrl = artifact.getProperty( ArtifactProperties.DOWNLOAD_URL, null );
            if ( downloadUrl != null )
            {
                buffer.append( ", try downloading from " ).append( downloadUrl );
            }
        }
        return buffer.toString();
    }

    /**
     * Creates a new exception with the specified artifact, repository and detail message.
     * 
     * @param artifact The missing artifact, may be {@code null}.
     * @param repository The involved remote repository, may be {@code null}.
     * @param message The detail message, may be {@code null}.
     */
    public ArtifactNotFoundException( Artifact artifact, RemoteRepository repository, String message )
    {
        super( artifact, repository, message );
    }

    /**
     * Creates a new exception with the specified artifact, repository and detail message.
     * 
     * @param artifact The missing artifact, may be {@code null}.
     * @param repository The involved remote repository, may be {@code null}.
     * @param message The detail message, may be {@code null}.
     * @param fromCache {@code true} if the exception was played back from the error cache, {@code false} if the
     *            exception actually just occurred.
     */
    public ArtifactNotFoundException( Artifact artifact, RemoteRepository repository, String message,
                                      boolean fromCache )
    {
        super( artifact, repository, message, fromCache );
    }

    /**
     * Creates a new exception with the specified artifact, repository, detail message and cause.
     * 
     * @param artifact The missing artifact, may be {@code null}.
     * @param repository The involved remote repository, may be {@code null}.
     * @param message The detail message, may be {@code null}.
     * @param cause The exception that caused this one, may be {@code null}.
     */
    public ArtifactNotFoundException( Artifact artifact, RemoteRepository repository, String message, Throwable cause )
    {
        super( artifact, repository, message, cause );
    }

}