net.jxta.codat.Metadata Maven / Gradle / Ivy

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package net.jxta.codat;


import net.jxta.document.Document;
import net.jxta.peergroup.PeerGroupID;

import java.io.IOException;


/**
 * Medata Codats are special codats that contain information about another
 * Codat. Multiple medata Codats can refer to the same Codat. Medata codats can
 * hold any kind of information about a codat, such as a symbolic name,
 * description, index and searching information, etc.
 *
 * @see net.jxta.codat.Codat
 * @see net.jxta.codat.CodatID
 * @see net.jxta.document.Document
 */
public class Metadata extends Codat {

    /**
     * Constructs a Metadata instance with a new CodatId given a PeerGroupID,
     * the CodatID of the associated Codat and a Document.
     *
     * @param groupID  The peer group to which this Codat will belong.
     * @param about    The CodatID of an associated Codat for which this Codat is
     *                 metadata or null if there is no associated Codat.
     * @param document Document which contains the content data for this Codat.
     * @throws IOException if there is an error accessing the document.
     */
    public Metadata(PeerGroupID groupID, CodatID about, Document document) throws IOException {
        super(groupID, about, document);
    }

    /**
     * Constructs a Metadata instance for an existing Codat given it's
     * CodatID, the CodatID of the associated Codat and a Document.
     * 
     * This implementation does not verify that the CodatID matches the
     * provided Document.
     *
     * @param id       CodatId of the new Codat.
     * @param about    CodatID of an associated Codat for which this Codat is metadata.
     * @param document Document which contains the content data for this Codat.
     */
    public Metadata(CodatID id, CodatID about, Document document) {
        super(id, about, document);
    }
}