| 47 |
|
*/ |
| 48 |
|
class SnapshotManager { |
| 49 |
|
public: |
| 50 |
< |
|
| 50 |
> |
SnapshotManager() : currentSnapshot_(NULL), previousSnapshot_(NULL) { |
| 51 |
> |
} |
| 52 |
> |
virtual ~SnapshotManager(); |
| 53 |
|
virtual bool advance() = 0; |
| 54 |
|
|
| 55 |
< |
Snapshot* getSnapshot(int id); |
| 54 |
< |
|
| 55 |
< |
Snapshot* getPrevSnapshot(); |
| 55 |
> |
virtual Snapshot* getSnapshot(int id) = 0; |
| 56 |
|
|
| 57 |
< |
void setCurrentSnapshot(); |
| 58 |
< |
|
| 59 |
< |
Snapshot* getCurrentSnapshot(); |
| 57 |
> |
/** |
| 58 |
> |
* Returns the pointer of previous snapshot |
| 59 |
> |
* @return the pointer of previous snapshot |
| 60 |
> |
*/ |
| 61 |
> |
Snapshot* getPrevSnapshot() { |
| 62 |
> |
return previousSnapshot_; |
| 63 |
> |
} |
| 64 |
|
|
| 65 |
< |
void setCurrentSnapshot(); |
| 65 |
> |
/** |
| 66 |
> |
* Returns the pointer of current snapshot |
| 67 |
> |
* @return the pointer of current snapshot |
| 68 |
> |
*/ |
| 69 |
> |
Snapshot* getCurrentSnapshot() { |
| 70 |
> |
return currentSnapshot_; |
| 71 |
> |
} |
| 72 |
|
|
| 73 |
|
int getCapacity(); |
| 74 |
|
|
| 75 |
< |
void setCapacity(); |
| 75 |
> |
virtual void setCapacity(int capacity); |
| 76 |
|
|
| 77 |
< |
void getNotifyStatus(); |
| 77 |
> |
bool getNotifyStatus(); |
| 78 |
|
|
| 79 |
< |
void setNotifyStatus(); |
| 79 |
> |
void setNotifyStatus(bool status); |
| 80 |
|
|
| 81 |
|
void attach(SnapshotObserver*); |
| 82 |
|
|
| 83 |
|
void detach(SnapshotObserver*); |
| 84 |
|
|
| 85 |
|
void notify(); |
| 86 |
+ |
|
| 87 |
+ |
protected: |
| 88 |
+ |
Snapshot* currentSnapshot_; |
| 89 |
+ |
Snapshot* previousSnapshot_; |
| 90 |
|
|
| 91 |
|
private: |
| 78 |
– |
vector<Snapshot*> snapshots_; |
| 92 |
|
vector<SnapshotObserver*> observers_; |
| 93 |
+ |
|
| 94 |
|
}; |
| 95 |
|
|
| 96 |
|
} |
