| 1 | package felix.task; |
| 2 | |
| 3 | import java.io.FileInputStream; |
| 4 | import java.util.concurrent.ExecutorService; |
| 5 | |
| 6 | import org.postgresql.PGConnection; |
| 7 | |
| 8 | import tuffy.util.Timer; |
| 9 | import tuffy.util.UIMan; |
| 10 | |
| 11 | import felix.dstruct.DataMovementOperator; |
| 12 | import felix.dstruct.StatOperator; |
| 13 | import felix.optimizer.DMOOptimizer; |
| 14 | import felix.society.Task; |
| 15 | import felix.society.Worker; |
| 16 | import felix.society.Task.TaskType; |
| 17 | |
| 18 | /** |
| 19 | * {@link Task} Object for optimizing a {@link DataMovementOperator}. |
| 20 | * @author czhang |
| 21 | * |
| 22 | */ |
| 23 | public class OptimizeDMOTask extends Task{ |
| 24 | |
| 25 | /** |
| 26 | * Operator containing the DMO. |
| 27 | */ |
| 28 | public StatOperator sop; |
| 29 | |
| 30 | /** |
| 31 | * DMO to be optimized. |
| 32 | */ |
| 33 | public DMOOptimizer dmoo; |
| 34 | |
| 35 | /** |
| 36 | * Constructor. |
| 37 | * @param _sop |
| 38 | * @param _dmoo |
| 39 | */ |
| 40 | public OptimizeDMOTask(StatOperator _sop, DMOOptimizer _dmoo){ |
| 41 | super(TaskType.TASK); |
| 42 | sop = _sop; |
| 43 | dmoo = _dmoo; |
| 44 | } |
| 45 | |
| 46 | @Override |
| 47 | public Worker generateWorker() { |
| 48 | return new OptimizeDMOWorker(sop, dmoo); |
| 49 | } |
| 50 | |
| 51 | /** |
| 52 | * A worker that optimize the DMO. |
| 53 | * @author czhang |
| 54 | * |
| 55 | */ |
| 56 | public class OptimizeDMOWorker extends Worker{ |
| 57 | |
| 58 | public StatOperator sop; |
| 59 | public DMOOptimizer dmoo; |
| 60 | |
| 61 | public OptimizeDMOWorker(StatOperator _sop, DMOOptimizer _dmoo){ |
| 62 | super(); |
| 63 | sop = _sop; |
| 64 | dmoo = _dmoo; |
| 65 | } |
| 66 | |
| 67 | @Override |
| 68 | public void run() { |
| 69 | try{ |
| 70 | |
| 71 | Timer.start("Mat-Timer"); |
| 72 | System.out.println(">>> Optimize DMOs for " + sop + "... "); |
| 73 | sop.prepare(); |
| 74 | |
| 75 | for(DataMovementOperator dmo : sop.getAllDMOs()){ |
| 76 | |
| 77 | //if(!dmo.hasPrepared){ |
| 78 | if(dmo.allowOptimization == false){ |
| 79 | dmo.copyLogicPlanToPhysicalPlanDirectly(); |
| 80 | }else{ |
| 81 | //optimize the materialization trade-off. |
| 82 | dmoo.optimizeMateralization(dmo); |
| 83 | } |
| 84 | dmo.prepare(); |
| 85 | |
| 86 | } |
| 87 | System.out.println("Uses " + Timer.elapsed("Mat-Timer") + "\n"); |
| 88 | |
| 89 | |
| 90 | }catch(Exception e){ |
| 91 | submitException(e); |
| 92 | } |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | @Override |
| 97 | public Worker generateWorker(ExecutorService pool) { |
| 98 | return null; |
| 99 | } |
| 100 | |
| 101 | |
| 102 | } |