eu.artist.reusevol.repo.common.util.ArtefactId.java Source code

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Here is the source code for eu.artist.reusevol.repo.common.util.ArtefactId.java

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/*******************************************************************************
 * Copyright (c) 2014 Fraunhofer IAO.
 * 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:
 *     Oliver Strau (Fraunhofer IAO) - initial API and implementation
 *    
 * Initially developed in the context of the ARTIST EU project http://www.artist-project.eu
 *******************************************************************************/
package eu.artist.reusevol.repo.common.util;

import java.util.Iterator;

import com.google.common.base.Splitter;

/**
 * Represents the ID of an artefact that is composed of the PackageName,
 * ArtefactName and the Version.
 * 
 * @author strauss
 * 
 */
public class ArtefactId {
    private PackageName packagePart;
    private ArtefactName artefactPart;
    private Version versionPart;

    /**
     * Identifies an artefact. Format is:
     * 
     * [packageId]![artefactId]![versionId]
     * 
     * Example:
     * 
     * eu.artist.uc.dews!gwt-profile!1.0.0
     * 
     * @param packageId
     * @param artefactId
     * @param versionId
     */
    private ArtefactId(PackageName packageId, ArtefactName artefactId, Version versionId) {
        this.packagePart = packageId;
        this.artefactPart = artefactId;
        this.versionPart = versionId;
    }

    public static ArtefactId of(String fullId) {
        PackageName pack;
        ArtefactName prj;
        Version v;
        Iterator<String> segments = Splitter.on("!").split(fullId).iterator();
        if (segments.hasNext()) {
            pack = PackageName.of(segments.next());
        } else {
            throw new IllegalArgumentException("Invalid or missing package id in '" + fullId + "'.");
        }
        if (segments.hasNext()) {
            prj = ArtefactName.of(segments.next());
        } else {
            throw new IllegalArgumentException("Invalid or missing artefactPart id in '" + fullId + "'.");
        }
        if (segments.hasNext()) {
            v = Version.of(segments.next());
        } else {
            return ArtefactId.of(pack, prj);
        }
        return ArtefactId.of(pack, prj, v);
    }

    public static ArtefactId of(PackageName packageId, ArtefactName artefactId, Version versionId) {
        return new ArtefactId(packageId, artefactId, versionId);
    }

    public static ArtefactId of(PackageName packageId, ArtefactName artefactId) {
        return new ArtefactId(packageId, artefactId, Version.HEAD);
    }

    public static ArtefactId of(String packageId, String artefactId, String versionId) {
        return new ArtefactId(PackageName.of(packageId), ArtefactName.of(artefactId), Version.of(versionId));
    }

    public static ArtefactId of(String packageId, String artefactId) {
        return new ArtefactId(PackageName.of(packageId), ArtefactName.of(artefactId), Version.HEAD);
    }

    /**
     * @return the packagePart
     */
    public PackageName getPackagePart() {
        return packagePart;
    }

    /**
     * @return the artefactPart
     */
    public ArtefactName getArtefactPart() {
        return artefactPart;
    }

    /**
     * @return the versionPart
     */
    public Version getVersionPart() {
        return versionPart;
    }

    /*
     * (non-Javadoc)
     * 
     * @see java.lang.Object#toString()
     */
    @Override
    public String toString() {
        StringBuilder builder = new StringBuilder();
        builder.append(packagePart.getName()).append("!").append(artefactPart.toString());
        if (versionPart.equals(Version.HEAD)) {
            builder.append("!HEAD");
        } else {
            builder.append("!").append(versionPart.toString());
        }
        return builder.toString();
    }

    /*
     * (non-Javadoc)
     * 
     * @see java.lang.Object#hashCode()
     */
    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((artefactPart == null) ? 0 : artefactPart.hashCode());
        result = prime * result + ((packagePart == null) ? 0 : packagePart.hashCode());
        result = prime * result + ((versionPart == null) ? 0 : versionPart.hashCode());
        return result;
    }

    /*
     * (non-Javadoc)
     * 
     * @see java.lang.Object#equals(java.lang.Object)
     */
    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (!(obj instanceof ArtefactId))
            return false;
        ArtefactId other = (ArtefactId) obj;
        if (artefactPart == null) {
            if (other.artefactPart != null)
                return false;
        } else if (!artefactPart.equals(other.artefactPart))
            return false;
        if (packagePart == null) {
            if (other.packagePart != null)
                return false;
        } else if (!packagePart.equals(other.packagePart))
            return false;
        if (versionPart == null) {
            if (other.versionPart != null)
                return false;
        } else if (!versionPart.equals(other.versionPart))
            return false;
        return true;
    }
}