android.database.sqlite.SQLiteQueryBuilder#buildUnionSubQuery ( )源码实例Demo

private Cursor queryTables(String[] projection, String selection, String order, String limit, String groupBy, String having) {
        String[] mmsProjection = getMmsProjection();

        String[] smsProjection = getSmsProjection();

        SQLiteQueryBuilder mmsQueryBuilder = new SQLiteQueryBuilder();
        SQLiteQueryBuilder smsQueryBuilder = new SQLiteQueryBuilder();

        mmsQueryBuilder.setDistinct(true);
        smsQueryBuilder.setDistinct(true);

        smsQueryBuilder.setTables(SmsDatabase.TABLE_NAME);
        mmsQueryBuilder.setTables(MmsDatabase.TABLE_NAME + " LEFT OUTER JOIN " +
                AttachmentDatabase.TABLE_NAME +
                " ON " + AttachmentDatabase.TABLE_NAME + "." + AttachmentDatabase.ROW_ID + " = " +
                " (SELECT " + AttachmentDatabase.TABLE_NAME + "." + AttachmentDatabase.ROW_ID +
                " FROM " + AttachmentDatabase.TABLE_NAME + " WHERE " +
                AttachmentDatabase.TABLE_NAME + "." + AttachmentDatabase.MMS_ID + " = " +
                MmsDatabase.TABLE_NAME + "." + MmsDatabase.ID + " LIMIT 1)");


        Set<String> mmsColumnsPresent = getMmsColumnsPresent();

        Set<String> smsColumnsPresent = getSmsColumnsPresent();

//        @SuppressWarnings("deprecation")
        String mmsSubQuery = mmsQueryBuilder.buildUnionSubQuery(TRANSPORT, mmsProjection, mmsColumnsPresent, 4, MMS_TRANSPORT, selection, null, null);
        ALog.d(TAG, "mmsSubQuery: " + mmsSubQuery + "\n");

//        @SuppressWarnings("deprecation")
        String smsSubQuery = smsQueryBuilder.buildUnionSubQuery(TRANSPORT, smsProjection, smsColumnsPresent, 4, SMS_TRANSPORT, selection, null, null);
        ALog.d(TAG, "smsSubQuery: " + smsSubQuery + "\n");

        SQLiteQueryBuilder unionQueryBuilder = new SQLiteQueryBuilder();
        String unionQuery = unionQueryBuilder.buildUnionQuery(new String[]{smsSubQuery, mmsSubQuery}, order, limit);
        ALog.d(TAG, "unionQuery: " + unionQuery + "\n");

        SQLiteQueryBuilder outerQueryBuilder = new SQLiteQueryBuilder();
        outerQueryBuilder.setTables("(" + unionQuery + ")");
//        @SuppressWarnings("deprecation")
        String query = outerQueryBuilder.buildQuery(projection, null, groupBy, having, null, null);
        ALog.d(TAG, "target query: " + query + "\n");

        SQLiteDatabase db = databaseHelper.getReadableDatabase();
        return db.rawQuery(query, null);
    }
 

public void sampleSQLiteQueryBuilder(SQLiteQueryBuilder builder, String input) {
    builder.appendWhere(input);
    //buildQueryString
    builder.buildQueryString(false, null, null, input, null, null, null, null);
    builder.buildQueryString(false, null, null, null, input, null, null, null);
    builder.buildQueryString(false, null, null, null, null, input, null, null);
    builder.buildQueryString(false, null, null, null, null, null, input,null);
    builder.buildQueryString(false, null, null, null, null, null,null, input);
    //query no limit
    builder.query(null, null, input, null, null, null,null);
    builder.query(null, null, null, null, input, null,null);
    builder.query(null, null, null, null,null,input,null);
    builder.query(null, null, null, null,null,null,input);
    //query with limit
    builder.query(null, null, input, null, null, null,null, null);
    builder.query(null, null, null, null, input, null,null, null);
    builder.query(null, null, null, null,null,input,null, null);
    builder.query(null, null, null, null,null,null,input, null);
    builder.query(null, null, null, null,null,null,null, input);
    //query with limit with cancellation system
    builder.query(null, null, input, null, null, null,null, null, new CancellationSignal());
    builder.query(null, null, null, null, input, null,null, null, new CancellationSignal());
    builder.query(null, null, null, null,null,input,null, null, new CancellationSignal());
    builder.query(null, null, null, null,null,null,input, null, new CancellationSignal());
    builder.query(null, null, null, null,null,null,null, input, new CancellationSignal());
    //buildQuery
    builder.buildQuery(null, input, null, null, null, null);
    builder.buildQuery(null, null, input,null, null, null);
    builder.buildQuery(null, null, null, input, null, null);
    builder.buildQuery(null, null, null, null, input, null);
    builder.buildQuery(null, null, null, null, null, input);
    //buildQuery with selectionArgs
    builder.buildQuery(null, input, new String[0], null, null, null, null);
    builder.buildQuery(null, null, new String[0], input, null, null, null);
    builder.buildQuery(null, null, new String[0],null, input,null, null);
    builder.buildQuery(null, null, new String[0],null, null, input,null);
    builder.buildQuery(null, null, new String[0],null, null, null, input);
    //buildUnionQuery
    builder.buildUnionQuery(new String[] {input}, null, null);
    builder.buildUnionQuery(null, input, null);
    builder.buildUnionQuery(null, null, input);
    //buildUnionSubQuery
    builder.buildUnionSubQuery(null, null, null,0, null, input, null, null);
    builder.buildUnionSubQuery(null, null, null,0, null, null, input, null);
    builder.buildUnionSubQuery(null, null, null,0, null, null, null, input);
    //buildUnionSubQuery with selectionArgs
    builder.buildUnionSubQuery(null, null, null,0, null, input, new String[0],null, null);
    builder.buildUnionSubQuery(null, null, null,0, null, null, new String[0], input, null);
    builder.buildUnionSubQuery(null, null, null,0, null, null, new String[0], null, input);
}