prepared database for bookmark service

bookmark/src/main/java/de/srsoftware/umbrella/bookmarks/SqliteDb.java

@@ -0,0 +1,59 @@
+/* © SRSoftware 2025 */
+package de.srsoftware.umbrella.bookmarks;
+
+import static de.srsoftware.umbrella.bookmarks.Constants.TABLE_URLS;
+import static de.srsoftware.umbrella.bookmarks.Constants.TABLE_URL_COMMENTS;
+import static de.srsoftware.umbrella.core.Constants.*;
+import static de.srsoftware.umbrella.core.Constants.ERROR_FAILED_CREATE_TABLE;
+import static java.lang.System.Logger.Level.ERROR;
+
+import de.srsoftware.umbrella.core.BaseDb;
+import java.sql.Connection;
+import java.sql.SQLException;
+
+public class SqliteDb extends BaseDb implements BookmarkDb {
+	public SqliteDb(Connection conn) {
+		super(conn);
+	}
+
+	@Override
+	protected int createTables() {
+		var version = createSettingsTable();
+		switch (version){
+			case 0:
+				createUrlsTable();
+				createUrlCommentsTable();
+		}
+		return setCurrentVersion(1);
+	}
+
+	private void createUrlCommentsTable() {
+		var sql = """
+CREATE TABLE IF NOT EXISTS "url_comments" (
+	`url_hash` VARCHAR ( 255 ) NOT NULL,
+	`user_id` LONG NOT NULL,
+	`comment` TEXT NOT NULL,
+	PRIMARY KEY (`url_hash`,`user_id`)
+)""";
+		try {
+			var stmt = db.prepareStatement(sql);
+			stmt.execute();
+			stmt.close();
+		} catch (SQLException e) {
+			LOG.log(ERROR, ERROR_FAILED_CREATE_TABLE, TABLE_URL_COMMENTS, e);
+			throw new RuntimeException(e);
+		}
+	}
+
+	private void createUrlsTable() {
+		var sql = "CREATE TABLE IF NOT EXISTS urls (hash VARCHAR(255) PRIMARY KEY, url TEXT NOT NULL)";
+		try {
+			var stmt = db.prepareStatement(sql);
+			stmt.execute();
+			stmt.close();
+		} catch (SQLException e) {
+			LOG.log(ERROR, ERROR_FAILED_CREATE_TABLE, TABLE_URLS, e);
+			throw new RuntimeException(e);
+		}
+	}
+}