Add database helper for wikivoyage

OsmAnd-java/src/net/osmand/IndexConstants.java

@@ -54,6 +54,7 @@ public class IndexConstants {
 	public static final String SRTM_INDEX_DIR = "srtm/"; //$NON-NLS-1$
 	public static final String ROADS_INDEX_DIR = "roads/"; //$NON-NLS-1$
 	public static final String WIKI_INDEX_DIR = "wiki/"; //$NON-NLS-1$
+	public static final String WIKIVOYAGE_INDEX_DIR = "wikivoyage/";
 	public static final String AV_INDEX_DIR = "avnotes/"; //$NON-NLS-1$
 	public static final String FONT_INDEX_DIR = "fonts/"; //$NON-NLS-1$
 	public static final String VOICE_INDEX_DIR = "voice/"; //$NON-NLS-1$

OsmAnd/src/net/osmand/plus/AppInitializer.java

@@ -47,6 +47,7 @@ import net.osmand.plus.voice.CommandPlayer;
 import net.osmand.plus.voice.CommandPlayerException;
 import net.osmand.plus.voice.MediaCommandPlayerImpl;
 import net.osmand.plus.voice.TTSCommandPlayerImpl;
+import net.osmand.plus.wikivoyage.data.WikivoyageDbHelper;
 import net.osmand.render.RenderingRulesStorage;
 import net.osmand.router.RoutingConfiguration;
 import net.osmand.util.Algorithms;
@@ -445,6 +446,7 @@ public class AppInitializer implements IProgress {
 		app.mapMarkersDbHelper = startupInit(new MapMarkersDbHelper(app), MapMarkersDbHelper.class);
 		app.mapMarkersHelper = startupInit(new MapMarkersHelper(app), MapMarkersHelper.class);
 		app.searchUICore = startupInit(new QuickSearchHelper(app), QuickSearchHelper.class);
+		app.wikivoyageDbHelper = startupInit(new WikivoyageDbHelper(app), WikivoyageDbHelper.class);
 
 		initOpeningHoursParser();
 	}

OsmAnd/src/net/osmand/plus/OsmandApplication.java

@@ -55,6 +55,7 @@ import net.osmand.plus.resources.ResourceManager;
 import net.osmand.plus.routing.RoutingHelper;
 import net.osmand.plus.search.QuickSearchHelper;
 import net.osmand.plus.voice.CommandPlayer;
+import net.osmand.plus.wikivoyage.data.WikivoyageDbHelper;
 import net.osmand.router.RoutingConfiguration;
 import net.osmand.search.SearchUICore;
 import net.osmand.util.Algorithms;
@@ -117,6 +118,7 @@ public class OsmandApplication extends MultiDexApplication {
 	OsmandRegions regions;
 	GeocodingLookupService geocodingLookupService;
 	QuickSearchHelper searchUICore;
+	WikivoyageDbHelper wikivoyageDbHelper;
 
 	RoutingConfiguration.Builder defaultRoutingConfig;
 	private Locale preferredLocale = null;
@@ -390,6 +392,10 @@ public class OsmandApplication extends MultiDexApplication {
 		return searchUICore;
 	}
 
+	public WikivoyageDbHelper getWikivoyageDbHelper() {
+		return wikivoyageDbHelper;
+	}
+
 	public CommandPlayer getPlayer() {
 		return player;
 	}

OsmAnd/src/net/osmand/plus/wikivoyage/data/WikivoyageDbHelper.java

@@ -0,0 +1,123 @@
+package net.osmand.plus.wikivoyage.data;
+
+import android.support.annotation.Nullable;
+
+import net.osmand.IndexConstants;
+import net.osmand.plus.OsmandApplication;
+import net.osmand.plus.api.SQLiteAPI.SQLiteConnection;
+import net.osmand.plus.api.SQLiteAPI.SQLiteCursor;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class WikivoyageDbHelper {
+
+	private static final String DB_NAME = "wikivoyage.sqlite";
+
+	private static final String ARTICLES_TABLE_NAME = "wikivoyage_articles";
+	private static final String ARTICLES_COL_ID = "article_id";
+	private static final String ARTICLES_COL_TITLE = "title";
+	private static final String ARTICLES_COL_CONTENT = "content_gzblob";
+	private static final String ARTICLES_COL_IS_PART_OF = "is_part_of";
+	private static final String ARTICLES_COL_LAT = "lat";
+	private static final String ARTICLES_COL_LON = "lon";
+	private static final String ARTICLES_COL_IMAGE_TITLE = "image_title";
+	private static final String ARTICLES_COL_GPX_GZ = "gpx_gz";
+	private static final String ARTICLES_COL_CITY_ID = "city_id";
+	private static final String ARTICLES_COL_ORIGINAL_ID = "original_id";
+	private static final String ARTICLES_COL_LANG = "lang";
+
+	private static final String ARTICLES_TABLE_SELECT = "SELECT " +
+			ARTICLES_COL_ID + ", " +
+			ARTICLES_COL_TITLE + ", " +
+			ARTICLES_COL_CONTENT + ", " +
+			ARTICLES_COL_IS_PART_OF + ", " +
+			ARTICLES_COL_LAT + ", " +
+			ARTICLES_COL_LON + ", " +
+			ARTICLES_COL_IMAGE_TITLE + ", " +
+			ARTICLES_COL_GPX_GZ + ", " +
+			ARTICLES_COL_CITY_ID + ", " +
+			ARTICLES_COL_ORIGINAL_ID + ", " +
+			ARTICLES_COL_LANG +
+			" FROM " + ARTICLES_TABLE_NAME;
+
+	private static final String SEARCH_TABLE_NAME = "wikivoyage_search";
+	private static final String SEARCH_COL_SEARCH_TERM = "search_term";
+	private static final String SEARCH_COL_CITY_ID = "city_id";
+	private static final String SEARCH_COL_ARTICLE_TITLE = "article_title";
+	private static final String SEARCH_COL_LANG = "lang";
+
+	private static final String SEARCH_TABLE_SELECT = "SELECT " +
+			SEARCH_COL_SEARCH_TERM + ", " +
+			SEARCH_COL_CITY_ID + ", " +
+			SEARCH_COL_ARTICLE_TITLE + ", " +
+			SEARCH_COL_LANG +
+			" FROM " + SEARCH_TABLE_NAME;
+
+	private final OsmandApplication application;
+
+	public WikivoyageDbHelper(OsmandApplication application) {
+		this.application = application;
+	}
+
+	public List<SearchResult> search(String searchQuery) {
+		List<SearchResult> res = new ArrayList<>();
+		SQLiteConnection conn = openConnection();
+		if (conn != null) {
+			try {
+				String dbQuery = SEARCH_TABLE_SELECT + " WHERE " + SEARCH_COL_SEARCH_TERM + " LIKE " + "'%" + searchQuery + "%'";
+				SQLiteCursor cursor = conn.rawQuery(dbQuery, null);
+				if (cursor.moveToFirst()) {
+					do {
+						res.add(readSearchResult(cursor));
+					} while (cursor.moveToNext());
+				}
+				cursor.close();
+			} finally {
+				conn.close();
+			}
+		}
+		return res;
+	}
+
+	@Nullable
+	private SQLiteConnection openConnection() {
+		String path = application.getAppPath(IndexConstants.WIKIVOYAGE_INDEX_DIR + DB_NAME).getAbsolutePath();
+		return application.getSQLiteAPI().openByAbsolutePath(path, true);
+	}
+
+	private SearchResult readSearchResult(SQLiteCursor query) {
+		SearchResult res = new SearchResult();
+
+		res.searchTerm = query.getString(0);
+		res.cityId = query.getLong(1);
+		res.articleTitle = query.getString(2);
+		res.lang = query.getString(3);
+
+		return res;
+	}
+
+	public static class SearchResult {
+
+		private String searchTerm;
+		private long cityId;
+		private String articleTitle;
+		private String lang;
+
+		public String getSearchTerm() {
+			return searchTerm;
+		}
+
+		public long getCityId() {
+			return cityId;
+		}
+
+		public String getArticleTitle() {
+			return articleTitle;
+		}
+
+		public String getLang() {
+			return lang;
+		}
+	}
+}