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Code Issues Releases Wiki Activity

Added DatabaseUpdate.

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Fabian Schlenz
2017-02-14 06:40:58 +01:00
parent e0afcc2063
commit f5ecb0f1b4
1 changed files with 41 additions and 0 deletions
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41
src/main/java/de/fabianonline/telegram_backup/DatabaseUpdates.java
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@@ -32,6 +32,7 @@ public class DatabaseUpdates {
register(new DB_Update_5(conn, db));
register(new DB_Update_6(conn, db));
register(new DB_Update_7(conn, db));
//register(new DB_Update_8(conn, db));
}
public void doUpdates() {
@@ -301,3 +302,43 @@ class DB_Update_7 extends DatabaseUpdate {
stmt.executeUpdate("UPDATE messages SET api_layer=51");
}
}
class DB_Update_8 extends DatabaseUpdate {
public int getVersion() { return 8; }
public boolean needsBackup() { return true; }
public DB_Update_8(Connection conn, Database db) { super(conn, db); }
protected void _doUpdate() throws SQLException {
stmt.executeUpdate("CREATE TABLE users_new (id INTEGER PRIMARY KEY ASC, telegram_id INTEGER, is_current BOOLEAN, first_name TEXT, last_name TEXT, username TEXT, type TEXT, phone TEXT, photo_id INTEGER, photo_downloaded BOOLEAN, time INTEGER");
LinkedHashMap<String, String> mappings = new LinkedHashMap<String, String>();
mappings.put("telegram_id", "id");
mappings.put("is_current", "TRUE");
mappings.put("first_name", "first_name");
mappings.put("last_name", "last_name");
mappings.put("username", "username");
mappings.put("type", "type");
mappings.put("phone", "phone");
mappings.put("photo_id", "NULL");
mappings.put("photo_downloaded", "FALSE");
mappings.put("time", "0");
StringBuilder query = new StringBuilder("INSERT INTO users_new\n(");
boolean first;
first = true;
for(String s : mappings.keySet()) {
if (!first) query.append(", ");
query.append(s);
first = false;
}
query.append(")\nSELECT \n");
first = true;
for (String s : mappings.values()) {
if (!first) query.append(", ");
query.append(s);
first = false;
}
query.append("\nFROM users");
stmt.executeUpdate(query.toString());
stmt.executeUpdate("DROP TABLE users");
stmt.executeUpdate("ALTER TABLE users_new RENAME TO users");
}
}