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 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
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package org.apache.cayenne.configuration;

import org.apache.cayenne.CayenneRuntimeException;
import org.apache.cayenne.map.DataMap;
import org.apache.cayenne.map.MapLoader;
import org.apache.cayenne.resource.Resource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.xml.sax.InputSource;

import java.io.InputStream;
import java.net.URL;

/**
 * @since 3.1
 */
public class XMLDataMapLoader implements DataMapLoader {

    private static Logger logger = LoggerFactory.getLogger(XMLDataMapLoader.class);

    public DataMap load(Resource configurationResource) throws CayenneRuntimeException {

        // TODO: andrus 11.27.2009 - deprecate MapLoader and implement a loader
        // here. MapLoader is in the wrong place, exposes ContentHandler methods and
        // implements if/else contextless matching of tags... should use something like
        // SAXNestedTagHandler instead.
        MapLoader mapLoader = new MapLoader();
        URL url = configurationResource.getURL();

        try (InputStream in = url.openStream()) {
            return mapLoader.loadDataMap(new InputSource(in));
        } catch (Exception e) {
            throw new CayenneRuntimeException(
                    "Error loading configuration from %s",
                    e,
                    url);
        }
    }
}