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| 1 | +package org.jlab.clas.reco; |
| 2 | + |
| 3 | +import java.util.ArrayList; |
| 4 | +import org.jlab.clara.engine.EngineData; |
| 5 | +import org.jlab.io.base.DataEvent; |
| 6 | + |
| 7 | +/** |
| 8 | + * A ReconstructionEngine that is a chain of ReconstructionEngines. |
| 9 | + * |
| 10 | + * @author baltzell |
| 11 | + */ |
| 12 | +public abstract class UberEngine extends ReconstructionEngine { |
| 13 | + |
| 14 | + private final ArrayList<ReconstructionEngine> engines = new ArrayList<>(); |
| 15 | + |
| 16 | + public UberEngine(String name, String author, String version) { |
| 17 | + super(name,author,version); |
| 18 | + } |
| 19 | + |
| 20 | + /** |
| 21 | + * Add engines to the chain. |
| 22 | + * @param e |
| 23 | + */ |
| 24 | + protected void add(ReconstructionEngine... e) { |
| 25 | + for (int i=0; i<e.length; ++i) { |
| 26 | + if (UberEngine.class.isInstance(e[i])) |
| 27 | + throw new RuntimeException("UberEngine cannot contain an UberEngine."); |
| 28 | + engines.add(e[i]); |
| 29 | + } |
| 30 | + } |
| 31 | + |
| 32 | + @Override |
| 33 | + public boolean processDataEvent(DataEvent event) { |
| 34 | + throw new RuntimeException("UberEngine does not implement processDataEvent."); |
| 35 | + } |
| 36 | + |
| 37 | + /** |
| 38 | + * Process one event through the chain of engines. |
| 39 | + * @param event |
| 40 | + */ |
| 41 | + @Override |
| 42 | + public final void filterEvent(DataEvent event) { |
| 43 | + for (ReconstructionEngine e : engines) |
| 44 | + e.filterEvent(event); |
| 45 | + } |
| 46 | + |
| 47 | + /** |
| 48 | + * Run all engines' init methods. |
| 49 | + * @return |
| 50 | + */ |
| 51 | + @Override |
| 52 | + public final boolean init() { |
| 53 | + boolean ret = true; |
| 54 | + for (ReconstructionEngine e : engines) |
| 55 | + if (!e.init()) ret = false; |
| 56 | + return ret; |
| 57 | + } |
| 58 | + |
| 59 | + /** |
| 60 | + * Run all engines' configure methods. |
| 61 | + * @param ed |
| 62 | + * @return |
| 63 | + */ |
| 64 | + @Override |
| 65 | + public EngineData configure(EngineData ed) { |
| 66 | + for (ReconstructionEngine e : engines) { |
| 67 | + e.configure(ed); |
| 68 | + } |
| 69 | + return ed; |
| 70 | + } |
| 71 | + |
| 72 | + /** |
| 73 | + * Run all engines' execute methods. |
| 74 | + * @param ed |
| 75 | + * @return |
| 76 | + */ |
| 77 | + @Override |
| 78 | + public EngineData execute(EngineData ed) { |
| 79 | + for (ReconstructionEngine e : engines) |
| 80 | + ed = e.execute(ed); |
| 81 | + return ed; |
| 82 | + } |
| 83 | +} |
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