| 1 | package de.uka.ipd.sdq.pipesandfilters.framework.filters; |
| 2 | |
| 3 | import de.uka.ipd.sdq.pipesandfilters.framework.PipeData; |
| 4 | |
| 5 | /** |
| 6 | * A simple filter example for test cases. This filter simply forwards incoming |
| 7 | * data. It also counts the number of elements he has received. |
| 8 | * |
| 9 | * @author pmerkle |
| 10 | * @author Baum |
| 11 | */ |
| 12 | |
| 13 | public class ExampleFilter extends Filter { |
| 14 | |
| 15 | /** |
| 16 | * This element stores the last pipe data element that arrived. |
| 17 | */ |
| 18 | private PipeData lastArrivedData = null; |
| 19 | |
| 20 | /** |
| 21 | * This element stores the number of elements the filter has received. |
| 22 | */ |
| 23 | private int receiveCount = 0; |
| 24 | |
| 25 | /** |
| 26 | * The processData method of the ExampleFilter. Incoming data only forwarded |
| 27 | * to the successive pipe element. No actual filtering is performed. |
| 28 | */ |
| 29 | @Override |
| 30 | public void processData(PipeData data) { |
| 31 | lastArrivedData = data; |
| 32 | receiveCount++; |
| 33 | super.processData(data); |
| 34 | } |
| 35 | |
| 36 | /** |
| 37 | * Getter method for lastArrivedData. |
| 38 | * |
| 39 | * @return the last pipe data element that arrived. |
| 40 | */ |
| 41 | public PipeData getLastArrivedData() { |
| 42 | return lastArrivedData; |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * Returns the number of data elements this filter has received. |
| 47 | * |
| 48 | * @return The number of data elements received. |
| 49 | */ |
| 50 | public int getReceiveCount() { |
| 51 | return receiveCount; |
| 52 | } |
| 53 | } |