CursorLoader - Two tables join query?

Question

I am having two tables with 1:1 relationship, I am using content provider and cursorloader.

How would I make a join query to work with cursor loader? I could hack it up somehow with rawSql inside content provider but how to do it in cursor loader constructor is beyond me.

Thanks a lot !

private static final String CREATE_TABLE_ARTICLES = "create table "
            + TABLE_ARTICLES + "("
            + COLUMN_ARTICLE_ID + " integer primary key autoincrement, "
            + COLUMN_URL + " text not null unique, "
            + COLUMN_TITLE + " text not null, "
            + COLUMN_PRICE + " text not null, "
            + COLUMN_ADDED + " text not null, "
            + COLUMN_IMG_URL + " text);";

    private static final String CREATE_TABLE_ARTICLE_DETAIL = "create table "
            + TABLE_ARTICLE_DETAILS + "("
            + COLUMN_ARTICLE_DETAIL_ID + " integer primary key autoincrement, "
            + COLUMN_DESC + " text not null, "
            + COLUMN_LOCALITY + " text, "
            + COLUMN_TYPE + " text not null, "
            + COLUMN_SELLER + " text not null, "
            + COLUMN_SELLER_PHONE + " text, "
            + COLUMN_IMAGE_COUNT + " integer default 0, "
            + COLUMN_ARTICLE + " integer, foreign key (" + COLUMN_ARTICLE + ") references " + TABLE_ARTICLES + "(" + COLUMN_ARTICLE_ID + "));";

Answer 1

Actually, you don't have to use a custom task loader. In a nutshell, one solution is to create a Uri "content://AUTHORITY/TableArticlesWithDetail". Then in your content provider, check for that Uri and do a raw SQL to do the join.

See how to use join query in CursorLoader when its constructor does not support it for details.