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 *  or more contributor license agreements.  See the NOTICE file
 *  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
 *  with the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
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 *  KIND, either express or implied.  See the License for the
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package org.apache.cayenne.dbsync.reverse.dbload;

import java.util.Map;
import java.util.Set;

import org.apache.cayenne.map.DbAttribute;
import org.apache.cayenne.map.DbEntity;
import org.junit.Test;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;

public class ExportedKeyLoaderIT extends BaseLoaderIT {

    @Test
    public void testExportedKeyLoad() throws Exception {
        boolean supportsFK = accessStackAdapter.supportsFKConstraints();
        if(!supportsFK) {
            return;
        }

        createEntity(nameForDb("ARTIST"));
        createEntity(nameForDb("GALLERY"));
        createEntity(nameForDb("PAINTING"));
        DbEntity artist = getDbEntity("ARTIST");
        DbAttribute artistId = new DbAttribute("ARTIST_ID");
        artist.addAttribute(artistId);

        DbEntity gallery = getDbEntity("GALLERY");
        DbAttribute galleryId = new DbAttribute("GALLERY_ID");
        gallery.addAttribute(galleryId);

        DbEntity painting = getDbEntity("PAINTING");
        DbAttribute paintingId = new DbAttribute("PAINTING_ID");
        DbAttribute paintingArtistId = new DbAttribute("ARTIST_ID");
        DbAttribute paintingGalleryId = new DbAttribute("GALLERY_ID");
        painting.addAttribute(paintingId);
        painting.addAttribute(paintingArtistId);
        painting.addAttribute(paintingGalleryId);

        ExportedKeyLoader loader = new ExportedKeyLoader(EMPTY_CONFIG, new DefaultDbLoaderDelegate());
        loader.load(connection.getMetaData(), store);

        assertEquals(2, store.getExportedKeysEntrySet().size());

        ExportedKey artistIdFk = findArtistExportedKey();
        assertNotNull(artistIdFk);

        assertEquals("ARTIST", artistIdFk.getPk().getTable().toUpperCase());
        assertEquals("ARTIST_ID", artistIdFk.getPk().getColumn().toUpperCase());

        assertEquals("PAINTING", artistIdFk.getFk().getTable().toUpperCase());
        assertEquals("ARTIST_ID", artistIdFk.getFk().getColumn().toUpperCase());
    }

    private ExportedKey findArtistExportedKey() {
        for(Map.Entry<String, Set<ExportedKey>> entry : store.getExportedKeysEntrySet()) {
            if(entry.getKey().toUpperCase().endsWith(".ARTIST_ID")) {
                return entry.getValue().iterator().next();
            }
        }

        return null;
    }
}