| 1 | package de.uka.ipd.sdq.probespec.framework; |
| 2 | |
| 3 | /** |
| 4 | * This blackboard discards any measurement that is published at the blackboard. Thus, the |
| 5 | * {@link #getSample(ProbeSetAndRequestContext)} method returns always null. |
| 6 | * <p> |
| 7 | * Use this blackboard, when no measurements are supposed to be stored. |
| 8 | * |
| 9 | * @author Philipp Merkle |
| 10 | * |
| 11 | */ |
| 12 | public class NullSampleBlackboard implements ISampleBlackboard { |
| 13 | |
| 14 | @Override |
| 15 | public void addBlackboardListener(IBlackboardListener l, Integer... topics) { |
| 16 | // nothing to do |
| 17 | } |
| 18 | |
| 19 | @Override |
| 20 | public void addSample(ProbeSetSample pss) { |
| 21 | // nothing to do |
| 22 | } |
| 23 | |
| 24 | @Override |
| 25 | public void deleteSample(ProbeSetAndRequestContext pss) { |
| 26 | // nothing to do |
| 27 | } |
| 28 | |
| 29 | @Override |
| 30 | public void deleteSamplesInRequestContext(RequestContext requestContext) { |
| 31 | // nothing to do |
| 32 | } |
| 33 | |
| 34 | @Override |
| 35 | public ProbeSetSample getSample(ProbeSetAndRequestContext probeSetSampleID) { |
| 36 | return null; |
| 37 | } |
| 38 | |
| 39 | @Override |
| 40 | public int size() { |
| 41 | return 0; |
| 42 | } |
| 43 | |
| 44 | } |