BlackBerry SQLite：将一个SQLite数据库附加到另一个

Question

我试图使用SQLite ATTACH DATABASE命令将一个SQLite数据库附加到BlackBerry上。

Database d1, d2; 
Statement st; 

URI dbURI1 = URI.create("file:///SDCard/Databases/SQLiteExample/MyTestDatabase1.db") 
if (DatabaseFactory.exists(dbURI1)) { 
    d1 = DatabaseFactory.open(dbURI1); 
} else { 
    d1 = DatabaseFactory.create(dbURI1); 
    st = d1.createStatement("CREATE TABLE 'People' ('Name' TEXT, 'Age' INTEGER)"); 

    st.prepare(); 
    st.execute(); 
    st.close(); 
} 

URI dbURI2 = URI.create("file:///SDCard/Databases/SQLiteExample/MyTestDatabase2.db"); 
if (DatabaseFactory.exists(dbURI2)) { 
    d2 = DatabaseFactory.open(dbURI2); 
} else { 
    d2 = DatabaseFactory.create(dbURI2); 
    st = d2.createStatement("CREATE TABLE 'People2' ('Name2' TEXT, 'Age2' INTEGER)"); 

    st.prepare(); 
    st.execute(); 
    st.close(); 
    d2.close(); 
} 

st = d1.createStatement("ATTACH DATABASE '/SDCard/Databases/SQLiteExample/MyTestDatabase2.db' as SECOND_TABLE"); 
st.prepare(); //THROWS AN EXCEPTION "SQL logic error or missing database" 
st.execute(); 
st.close(); 

当它试图为“附加数据库”命令准备语句我发现了一个异常ATTACH DATABASE /SDCard/Databases/SQLiteExample/MyTestDatabase2.db' as SECOND_TABLE: SQLlogic error or missing database 。

是否可以在BlackBerry SQLite API中使用ATTACH DATABASE命令？

谢谢。

Answer 1

不，黑莓手机的SQLite实现不支持ATTACH DATABASE。请参阅BlackBerry文档“Working with SQLite databases”以进行确认。

Answer 2

RIM添加了Attach/Detach Database命令他们的BlackBerry OS 7.0 API：
BlackBerry 7.0 API Docs