delete empty transactions

Author: fefe982

app/src/org/gnucash/android/db/AccountsDbAdapter.java

@@ -279,6 +279,9 @@ public boolean destructiveDeleteAccount(long rowId){
                     }
                 }
             }
+            // TODO: with "ON DELETE CASCADE", the first two delete will not be necessary.
+            //       deleteRecord(AccountEntry.TABLE_NAME, rowId); will delete related
+            //       transactions and splits
             //delete splits in this account
             mDb.delete(SplitEntry.TABLE_NAME,
                     SplitEntry.COLUMN_TRANSACTION_UID  + " IN ( SELECT DISTINCT "
@@ -287,6 +290,14 @@ public boolean destructiveDeleteAccount(long rowId){
                     + AccountEntry.TABLE_NAME + "_" + AccountEntry.COLUMN_UID
                     + " = ? )",
                     new String[]{getAccountUID(rowId)});
+            // delete empty transactions
+            // trans_split_acct is an inner joint, empty transactions will
+            // not be selected in this view
+            mDb.delete(TransactionEntry.TABLE_NAME,
+                    TransactionEntry.COLUMN_UID  + " NOT IN ( SELECT DISTINCT "
+                            + TransactionEntry.TABLE_NAME + "_" + TransactionEntry.COLUMN_UID
+                            + " FROM trans_split_acct",
+                    null);
             deleteRecord(AccountEntry.TABLE_NAME, rowId);
             mDb.setTransactionSuccessful();
             return true;