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• DefaultMetadata.java

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org.eclipse.aether.metadata.DefaultMetadata Maven / Gradle / Ivy

/*******************************************************************************
 * 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.metadata;

import java.io.File;
import java.util.Map;

/**
 * A basic metadata instance. Note: Instances of this class are immutable and the exposed mutators return new
 * objects rather than changing the current instance.
 */
public final class DefaultMetadata
    extends AbstractMetadata
{

    private final String groupId;

    private final String artifactId;

    private final String version;

    private final String type;

    private final Nature nature;

    private final File file;

    private final Map properties;

    /**
     * Creates a new metadata for the repository root with the specific type and nature.
     * 
     * @param type The type of the metadata, e.g. "maven-metadata.xml", may be {@code null}.
     * @param nature The nature of the metadata, must not be {@code null}.
     */
    public DefaultMetadata( String type, Nature nature )
    {
        this( "", "", "", type, nature, null, (File) null );
    }

    /**
     * Creates a new metadata for the groupId level with the specific type and nature.
     * 
     * @param groupId The group identifier to which this metadata applies, may be {@code null}.
     * @param type The type of the metadata, e.g. "maven-metadata.xml", may be {@code null}.
     * @param nature The nature of the metadata, must not be {@code null}.
     */
    public DefaultMetadata( String groupId, String type, Nature nature )
    {
        this( groupId, "", "", type, nature, null, (File) null );
    }

    /**
     * Creates a new metadata for the groupId:artifactId level with the specific type and nature.
     * 
     * @param groupId The group identifier to which this metadata applies, may be {@code null}.
     * @param artifactId The artifact identifier to which this metadata applies, may be {@code null}.
     * @param type The type of the metadata, e.g. "maven-metadata.xml", may be {@code null}.
     * @param nature The nature of the metadata, must not be {@code null}.
     */
    public DefaultMetadata( String groupId, String artifactId, String type, Nature nature )
    {
        this( groupId, artifactId, "", type, nature, null, (File) null );
    }

    /**
     * Creates a new metadata for the groupId:artifactId:version level with the specific type and nature.
     * 
     * @param groupId The group identifier to which this metadata applies, may be {@code null}.
     * @param artifactId The artifact identifier to which this metadata applies, may be {@code null}.
     * @param version The version to which this metadata applies, may be {@code null}.
     * @param type The type of the metadata, e.g. "maven-metadata.xml", may be {@code null}.
     * @param nature The nature of the metadata, must not be {@code null}.
     */
    public DefaultMetadata( String groupId, String artifactId, String version, String type, Nature nature )
    {
        this( groupId, artifactId, version, type, nature, null, (File) null );
    }

    /**
     * Creates a new metadata for the groupId:artifactId:version level with the specific type and nature.
     * 
     * @param groupId The group identifier to which this metadata applies, may be {@code null}.
     * @param artifactId The artifact identifier to which this metadata applies, may be {@code null}.
     * @param version The version to which this metadata applies, may be {@code null}.
     * @param type The type of the metadata, e.g. "maven-metadata.xml", may be {@code null}.
     * @param nature The nature of the metadata, must not be {@code null}.
     * @param file The resolved file of the metadata, may be {@code null}.
     */
    public DefaultMetadata( String groupId, String artifactId, String version, String type, Nature nature, File file )
    {
        this( groupId, artifactId, version, type, nature, null, file );
    }

    /**
     * Creates a new metadata for the groupId:artifactId:version level with the specific type and nature.
     * 
     * @param groupId The group identifier to which this metadata applies, may be {@code null}.
     * @param artifactId The artifact identifier to which this metadata applies, may be {@code null}.
     * @param version The version to which this metadata applies, may be {@code null}.
     * @param type The type of the metadata, e.g. "maven-metadata.xml", may be {@code null}.
     * @param nature The nature of the metadata, must not be {@code null}.
     * @param properties The properties of the metadata, may be {@code null} if none.
     * @param file The resolved file of the metadata, may be {@code null}.
     */
    public DefaultMetadata( String groupId, String artifactId, String version, String type, Nature nature,
                            Map properties, File file )
    {
        this.groupId = emptify( groupId );
        this.artifactId = emptify( artifactId );
        this.version = emptify( version );
        this.type = emptify( type );
        if ( nature == null )
        {
            throw new IllegalArgumentException( "metadata nature was not specified" );
        }
        this.nature = nature;
        this.file = file;
        this.properties = copyProperties( properties );
    }

    DefaultMetadata( String groupId, String artifactId, String version, String type, Nature nature, File file,
                     Map properties )
    {
        // NOTE: This constructor assumes immutability of the provided properties, for internal use only
        this.groupId = emptify( groupId );
        this.artifactId = emptify( artifactId );
        this.version = emptify( version );
        this.type = emptify( type );
        this.nature = nature;
        this.file = file;
        this.properties = properties;
    }

    private static String emptify( String str )
    {
        return ( str == null ) ? "" : str;
    }

    public String getGroupId()
    {
        return groupId;
    }

    public String getArtifactId()
    {
        return artifactId;
    }

    public String getVersion()
    {
        return version;
    }

    public String getType()
    {
        return type;
    }

    public Nature getNature()
    {
        return nature;
    }

    public File getFile()
    {
        return file;
    }

    public Map getProperties()
    {
        return properties;
    }

}