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package shaded.shaded.org.eclipse.aether.spi.connector;

/*
 * 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 java.io.File;

import org.eclipse.aether.metadata.Metadata;
import org.eclipse.aether.transfer.MetadataTransferException;

/**
 * A download/upload of metadata.
 * 
 * @noextend This class is not intended to be extended by clients.
 */
public abstract class MetadataTransfer
    extends Transfer
{

    private Metadata metadata;

    private File file;

    private MetadataTransferException exception;

    MetadataTransfer()
    {
        // hide
    }

    /**
     * Gets the metadata being transferred.
     * 
     * @return The metadata being transferred or {@code null} if not set.
     */
    public Metadata getMetadata()
    {
        return metadata;
    }

    /**
     * Sets the metadata to transfer.
     * 
     * @param metadata The metadata, may be {@code null}.
     * @return This transfer for chaining, never {@code null}.
     */
    public MetadataTransfer setMetadata( Metadata metadata )
    {
        this.metadata = metadata;
        return this;
    }

    /**
     * Gets the local file the metadata is downloaded to or uploaded from. In case of a download, a connector should
     * first transfer the bytes to a temporary file and only overwrite the target file once the entire download is
     * completed such that an interrupted/failed download does not corrupt the current file contents.
     * 
     * @return The local file or {@code null} if not set.
     */
    public File getFile()
    {
        return file;
    }

    /**
     * Sets the local file the metadata is downloaded to or uploaded from.
     * 
     * @param file The local file, may be {@code null}.
     * @return This transfer for chaining, never {@code null}.
     */
    public MetadataTransfer setFile( File file )
    {
        this.file = file;
        return this;
    }

    /**
     * Gets the exception that occurred during the transfer (if any).
     * 
     * @return The exception or {@code null} if the transfer was successful.
     */
    public MetadataTransferException getException()
    {
        return exception;
    }

    /**
     * Sets the exception that occurred during the transfer.
     * 
     * @param exception The exception, may be {@code null} to denote a successful transfer.
     * @return This transfer for chaining, never {@code null}.
     */
    public MetadataTransfer setException( MetadataTransferException exception )
    {
        this.exception = exception;
        return this;
    }

}