org.mycore.datamodel.metadata.share.MCRMetadataShareAgentFactory Maven / Gradle / Ivy

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/*
 * This file is part of ***  M y C o R e  ***
 * See http://www.mycore.de/ for details.
 *
 * MyCoRe is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * MyCoRe is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with MyCoRe.  If not, see .
 */

package org.mycore.datamodel.metadata.share;

import org.mycore.common.config.MCRConfiguration2;
import org.mycore.datamodel.metadata.MCRObjectID;

/**
 * This factory creates {@link MCRMetadataShareAgent} instances.
 * 
 * To configure a custom metadata share agent define a property MCR.Metadata.ShareAgent.{objectType}
 * that points to a class that implements the {@link MCRMetadataShareAgent} interface.
 * @author Thomas Scheffler (yagee)
 * 
 */
public class MCRMetadataShareAgentFactory {

    private static final String CONFIG_PREFIX = "MCR.Metadata.ShareAgent.";

    private static final MCRDefaultMetadataShareAgent DEFAULT_AGENT = new MCRDefaultMetadataShareAgent();

    public static MCRMetadataShareAgent getAgent(MCRObjectID objectId) {
        String propertyName = CONFIG_PREFIX + objectId.getTypeId();
        return MCRConfiguration2.getSingleInstanceOf(propertyName)
            .orElseGet(MCRMetadataShareAgentFactory::getDefaultAgent);
    }

    /**
     * Standard agent that uses org.mycore.datamodel.MCRMeta* classes.
     */
    public static MCRMetadataShareAgent getDefaultAgent() {
        return DEFAULT_AGENT;
    }

}