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package org.apache.cayenne.project.extension.info;

import org.apache.cayenne.configuration.ConfigurationNodeVisitor;
import org.apache.cayenne.configuration.xml.DataChannelMetaData;
import org.apache.cayenne.di.Inject;
import org.apache.cayenne.project.Project;
import org.apache.cayenne.project.extension.BaseNamingDelegate;
import org.apache.cayenne.project.extension.LoaderDelegate;
import org.apache.cayenne.project.extension.ProjectExtension;
import org.apache.cayenne.project.extension.SaverDelegate;

/**
 * Extension that provides additional properties for project entities.
 * It stores data in {@link ObjectInfo} associated with objects via {@link DataChannelMetaData}.
 * Currently used by Modeler and cgen tools to provide user comments.
 *
 * @since 4.1
 */
public class InfoExtension implements ProjectExtension {

    static final String NAMESPACE = "http://cayenne.apache.org/schema/" + Project.VERSION + "/info";

    @Inject
    private DataChannelMetaData metaData;

    @Override
    public LoaderDelegate createLoaderDelegate() {
        return new InfoLoaderDelegate(metaData);
    }

    @Override
    public SaverDelegate createSaverDelegate() {
        return new InfoSaverDelegate(metaData);
    }

    @Override
    public ConfigurationNodeVisitor createNamingDelegate() {
        return new BaseNamingDelegate();
    }
}