Java 使用ORMlite从任何表中获取数据的通用方法
我正在尝试创建一个方法,可以使用ormlite和Dao类从SQLite的任何表中获取所有数据,我不知道Dao中设置了哪些值,代码如下所示:Java 使用ORMlite从任何表中获取数据的通用方法,java,database,sqlite,dao,Java,Database,Sqlite,Dao,我正在尝试创建一个方法,可以使用ormlite和Dao类从SQLite的任何表中获取所有数据,我不知道Dao中设置了哪些值,代码如下所示: public <T> List<T> getAllRecords(Class<T> klass){ String databaseUrl = "jdbc:sqlite:c:\\Users\\workspace\\my_sqlite"; SQLiteDBLayer sQLiteDBLayer = new SQ
public <T> List<T> getAllRecords(Class<T> klass){
String databaseUrl = "jdbc:sqlite:c:\\Users\\workspace\\my_sqlite";
SQLiteDBLayer sQLiteDBLayer = new SQLiteDBLayer(SQLiteDBLayer.ConnectionType.READER);
ConnectionSource connectionSource = null;
try {
connectionSource = new JdbcConnectionSource(databaseUrl);
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Dao<???, String> transfor = null ; //???? is where I'm stuck
List<T> results;
try {
transfor =DaoManager.createDao(connectionSource,????);//And Here also
results= (List<T>) transfor.queryForAll();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
公共列表getAllRecords(类klass){
String databaseUrl=“jdbc:sqlite:c:\\Users\\workspace\\my\u sqlite”;
SQLiteDBLayer SQLiteDBLayer=新的SQLiteDBLayer(SQLiteDBLayer.ConnectionType.READER);
ConnectionSource ConnectionSource=null;
试一试{
connectionSource=新的JdbcConnectionSource(数据库URL);
}捕获(SQLE异常){
//TODO自动生成的捕捉块
e、 printStackTrace();
}
道我解决了它:
Dao<T, String> transfor = null ; //solve
List<T> results;
try {
transfor =DaoManager.createDao(connectionSource,klass);//Solve
results= (List<T>) transfor.queryForAll();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Dao transfer=null;//求解
列出结果;
试一试{
transfor=DaoManager.createDao(connectionSource,klass);//求解
结果=(列表)transfor.queryForAll();
}捕获(SQLE异常){
//TODO自动生成的捕捉块
e、 printStackTrace();
}