Toshio Koide | a03915e | 2014-07-01 18:39:52 -0700 | [diff] [blame] | 1 | package net.onrc.onos.api.batchoperation; |
| 2 | |
Toshio Koide | cff5d98 | 2014-07-31 11:41:56 -0700 | [diff] [blame] | 3 | import java.util.Collections; |
Toshio Koide | a03915e | 2014-07-01 18:39:52 -0700 | [diff] [blame] | 4 | import java.util.LinkedList; |
| 5 | import java.util.List; |
| 6 | |
| 7 | /** |
| 8 | * A list of BatchOperationEntry. |
| 9 | * |
Toshio Koide | 4ea8419 | 2014-07-31 12:10:12 -0700 | [diff] [blame^] | 10 | * @param <T> the enum of operators <br> |
| 11 | * This enum must be defined in each sub-classes. |
| 12 | * |
Toshio Koide | a03915e | 2014-07-01 18:39:52 -0700 | [diff] [blame] | 13 | */ |
Toshio Koide | 4ea8419 | 2014-07-31 12:10:12 -0700 | [diff] [blame^] | 14 | public abstract class BatchOperation<T extends BatchOperationEntry<?, ?>> { |
| 15 | private List<T> ops; |
Toshio Koide | a03915e | 2014-07-01 18:39:52 -0700 | [diff] [blame] | 16 | |
| 17 | /** |
| 18 | * Constructor. |
| 19 | */ |
| 20 | public BatchOperation() { |
Toshio Koide | a8e8c54 | 2014-07-31 12:10:12 -0700 | [diff] [blame] | 21 | ops = new LinkedList<>(); |
Toshio Koide | a03915e | 2014-07-01 18:39:52 -0700 | [diff] [blame] | 22 | } |
| 23 | |
| 24 | /** |
| 25 | * Removes all operations maintained in this object. |
| 26 | */ |
| 27 | public void clear() { |
| 28 | ops.clear(); |
| 29 | } |
| 30 | |
| 31 | /** |
Toshio Koide | cff5d98 | 2014-07-31 11:41:56 -0700 | [diff] [blame] | 32 | * Returns the number of operations in this object. |
| 33 | * |
Toshio Koide | a8e8c54 | 2014-07-31 12:10:12 -0700 | [diff] [blame] | 34 | * @return the number of operations in this object |
Toshio Koide | cff5d98 | 2014-07-31 11:41:56 -0700 | [diff] [blame] | 35 | */ |
| 36 | public int size() { |
| 37 | return ops.size(); |
| 38 | } |
| 39 | |
| 40 | /** |
Toshio Koide | cff5d98 | 2014-07-31 11:41:56 -0700 | [diff] [blame] | 41 | * Returns the operations in this object. |
| 42 | * |
Toshio Koide | a8e8c54 | 2014-07-31 12:10:12 -0700 | [diff] [blame] | 43 | * @return the operations in this object |
Toshio Koide | cff5d98 | 2014-07-31 11:41:56 -0700 | [diff] [blame] | 44 | */ |
Toshio Koide | 4ea8419 | 2014-07-31 12:10:12 -0700 | [diff] [blame^] | 45 | public List<T> getOperations() { |
Toshio Koide | cff5d98 | 2014-07-31 11:41:56 -0700 | [diff] [blame] | 46 | return Collections.unmodifiableList(ops); |
| 47 | } |
| 48 | |
| 49 | /** |
Toshio Koide | 4ea8419 | 2014-07-31 12:10:12 -0700 | [diff] [blame^] | 50 | * Adds an operation. |
Toshio Koide | a03915e | 2014-07-01 18:39:52 -0700 | [diff] [blame] | 51 | * |
Toshio Koide | 4ea8419 | 2014-07-31 12:10:12 -0700 | [diff] [blame^] | 52 | * @param entry the operation to be added |
| 53 | * @return this object if succeeded, null otherwise |
Toshio Koide | a03915e | 2014-07-01 18:39:52 -0700 | [diff] [blame] | 54 | */ |
Toshio Koide | 4ea8419 | 2014-07-31 12:10:12 -0700 | [diff] [blame^] | 55 | public BatchOperation<T> addOperation(T entry) { |
| 56 | return ops.add(entry) ? this : null; |
Toshio Koide | a03915e | 2014-07-01 18:39:52 -0700 | [diff] [blame] | 57 | } |
| 58 | } |