preparing for import of old database

tags/src/main/java/de/srsoftware/umbrella/tags/SqliteDb.java

@@ -14,56 +14,86 @@ import static java.lang.System.Logger.Level.INFO;
 import static java.text.MessageFormat.format;
 
 import de.srsoftware.tools.jdbc.Query;
+import de.srsoftware.umbrella.core.BaseDb;
 import de.srsoftware.umbrella.core.exceptions.UmbrellaException;
 import java.sql.Connection;
 import java.sql.SQLException;
 import java.util.*;
 
-public class SqliteDb implements TagDB{
+public class SqliteDb extends BaseDb implements TagDB{
 	private static final int INITIAL_DB_VERSION = 1;
 	private static final System.Logger LOG = System.getLogger("TagDB");
-	private final Connection db;
 
 	public SqliteDb(Connection conn) {
-		this.db = conn;
-		init();
+		super(conn);
 	}
 
-	private int createTables() {
-		createTagTables();
-		return createSettingsTable();
+	@Override
+	protected int createTables() {
+		var version = createSettingsTable();
+		switch (version){
+			case 0:
+/*				createLegacyUrlsTable();
+				createLegacyCommentsTable();
+				createLegacyUrlCommentsTable();
+				createLegacyTagsTable();
+			case 1:
+				splitContentToBookmarks();*/
+				createTagTables();
+		}
+
+		return setCurrentVersion(1);
 	}
 
-	private int createSettingsTable() {
-		var createTable = """
-CREATE TABLE IF NOT EXISTS {0} ( {1} VARCHAR(255) PRIMARY KEY, {2} VARCHAR(255) NOT NULL);
-""";
+	private void createLegacyCommentsTable() {
+		var sql = "CREATE TABLE IF NOT EXISTS comments (hash VARCHAR(255) PRIMARY KEY, comment TEXT NOT NULL)";
 		try {
-			var stmt = db.prepareStatement(format(createTable,TABLE_SETTINGS, KEY, VALUE));
+			var stmt = db.prepareStatement(sql);
 			stmt.execute();
 			stmt.close();
 		} catch (SQLException e) {
-			LOG.log(ERROR,ERROR_FAILED_CREATE_TABLE,TABLE_SETTINGS,e);
+			LOG.log(ERROR, ERROR_FAILED_CREATE_TABLE, "Comments (legacy)", e);
 			throw new RuntimeException(e);
 		}
+	}
 
-		Integer version = null;
+	private void createLegacyTagsTable() {
+		var sql = "CREATE TABLE IF NOT EXISTS tags (tag VARCHAR(255) NOT NULL, url_hash VARCHAR(255) NOT NULL, user_id int NOT NULL, UNIQUE(tag, url_hash, user_id))";
 		try {
-			var rs = select(VALUE).from(TABLE_SETTINGS).where(KEY, equal(DB_VERSION)).exec(db);
-			if (rs.next()) version = rs.getInt(VALUE);
-			rs.close();
-			if (version == null) {
-				version = INITIAL_DB_VERSION;
-				insertInto(TABLE_SETTINGS, KEY, VALUE).values(DB_VERSION,version).execute(db).close();
-			}
+			var stmt = db.prepareStatement(sql);
+			stmt.execute();
+			stmt.close();
+		} catch (SQLException e) {
+			LOG.log(ERROR, ERROR_FAILED_CREATE_TABLE, "Tags (legacy)", e);
+			throw new RuntimeException(e);
+		}
+	}
 
-			return version;
+	private void createLegacyUrlsTable() {
+		var sql = "CREATE TABLE IF NOT EXISTS urls (hash VARCHAR(255) PRIMARY KEY, url TEXT NOT NULL, timestamp INT NOT NULL DEFAULT 0)";
+		try {
+			var stmt = db.prepareStatement(sql);
+			stmt.execute();
+			stmt.close();
+		} catch (SQLException e) {
+			LOG.log(ERROR, ERROR_FAILED_CREATE_TABLE, "URLs (legacy)", e);
+			throw new RuntimeException(e);
+		}
+	}
+
+	private void createLegacyUrlCommentsTable() {
+		var sql = "CREATE TABLE IF NOT EXISTS url_comments (`url_hash` VARCHAR ( 255 ) NOT NULL, `comment_hash` VARCHAR ( 255 ) NOT NULL, `user_id` INT NOT NULL, UNIQUE(`url_hash`,`user_id`))";
+		try {
+			var stmt = db.prepareStatement(sql);
+			stmt.execute();
+			stmt.close();
 		} catch (SQLException e) {
-			LOG.log(ERROR,ERROR_READ_TABLE,DB_VERSION,TABLE_SETTINGS,e);
+			LOG.log(ERROR, ERROR_FAILED_CREATE_TABLE, "URL_comments (legacy)", e);
 			throw new RuntimeException(e);
 		}
 	}
 
+
 	private void createTagTables() {
 		var createTable = """
 CREATE TABLE IF NOT EXISTS "{0}" (