org.eclipse.gyrex.p2.internal.packages.InstallableUnitReference.java Source code

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Here is the source code for org.eclipse.gyrex.p2.internal.packages.InstallableUnitReference.java

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/*******************************************************************************
 * Copyright (c) 2011, 2012 AGETO Service GmbH and others.
 * 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:
 *     Gunnar Wagenknecht - initial API and implementation
 *******************************************************************************/
package org.eclipse.gyrex.p2.internal.packages;

import org.eclipse.equinox.p2.metadata.Version;

import org.eclipse.gyrex.common.identifiers.IdHelper;

import org.apache.commons.lang.builder.ToStringBuilder;
import org.apache.commons.lang.builder.ToStringStyle;

/**
 * An installable unit.
 */
public final class InstallableUnitReference {

    private String id;
    private Version version;

    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final InstallableUnitReference other = (InstallableUnitReference) obj;
        if (id == null) {
            if (other.id != null) {
                return false;
            }
        } else if (!id.equals(other.id)) {
            return false;
        }
        if (version == null) {
            if (other.version != null) {
                return false;
            }
        } else if (!version.equals(other.version)) {
            return false;
        }
        return true;
    }

    /**
     * The unit id.
     * 
     * @return
     */
    public String getId() {
        return id;
    }

    /**
     * Returns the version.
     * 
     * @return the version
     */
    public Version getVersion() {
        return version;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = (prime * result) + ((id == null) ? 0 : id.hashCode());
        result = (prime * result) + ((version == null) ? 0 : version.hashCode());
        return result;
    }

    /**
     * Sets the id.
     * 
     * @param id
     *            the id to set
     */
    public void setId(final String id) {
        if (!IdHelper.isValidId(id)) {
            throw new IllegalArgumentException("invalid id");
        }
        this.id = id;
    }

    /**
     * Sets the version.
     * 
     * @param version
     *            the version to set
     */
    public void setVersion(final Version version) {
        this.version = version;
    }

    @Override
    public String toString() {
        final ToStringBuilder builder = new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE);
        builder.append("id", id);
        builder.append("version", version);
        return builder.toString();
    }
}