package org.cacert.gigi.database;
+import java.io.IOException;
+import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.util.HashMap;
import java.util.Properties;
+import org.cacert.gigi.database.SQLFileManager.ImportType;
+
public class DatabaseConnection {
+ public static final int CURRENT_SCHEMA_VERSION = 1;
+
public static final int CONNECTION_TIMEOUT = 24 * 60 * 60;
private Connection c;
throw new Error("Re-initiaizing is forbidden.");
}
credentials = conf;
+ GigiResultSet rs = getInstance().prepare("SELECT version FROM schemeVersion ORDER BY version DESC LIMIT 1").executeQuery();
+ int version = 0;
+ if (rs.next()) {
+ version = rs.getInt(1);
+ }
+ if (version == CURRENT_SCHEMA_VERSION) {
+ return; // Good to go
+ }
+ if (version > CURRENT_SCHEMA_VERSION) {
+ throw new Error("Invalid database version. Please fix this.");
+ }
+ upgrade(version);
+ }
+
+ private static void upgrade(int version) {
+ try {
+ Statement s = getInstance().c.createStatement();
+ while (version < CURRENT_SCHEMA_VERSION) {
+ try (InputStream resourceAsStream = DatabaseConnection.class.getResourceAsStream("upgrade/from_" + version + ".sql")) {
+ if (resourceAsStream == null) {
+ throw new Error("Upgrade script from version " + version + " was not found.");
+ }
+ SQLFileManager.addFile(s, resourceAsStream, ImportType.PRODUCTION);
+ }
+ version++;
+ }
+ s.addBatch("INSERT INTO schemeVersion SET version='" + version + "'");
+ System.out.println("UPGRADING Database to version " + version);
+ s.executeBatch();
+ System.out.println("done.");
+ s.close();
+ } catch (SQLException e) {
+ e.printStackTrace();
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
}
public void beginTransaction() throws SQLException {