tests/org.simantics.db.tests/src/org/simantics/db/tests/performance/read/BtreeTest.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.db.tests.performance.read;
  13
  14 import java.util.UUID;
  15
  16 import org.simantics.databoard.Bindings;
  17 import org.simantics.databoard.binding.mutable.Variant;
  18 import org.simantics.datatypes.utils.BTreeUtils;
  19 import org.simantics.db.Resource;
  20 import org.simantics.db.Session;
  21 import org.simantics.db.WriteGraph;
  22 import org.simantics.db.common.request.WriteResultRequest;
  23 import org.simantics.db.exception.DatabaseException;
  24 import org.simantics.db.service.VirtualGraphSupport;
  25 import org.simantics.db.testing.base.ExistingDatabaseTest;
  26
  27
  28 public class BtreeTest extends ExistingDatabaseTest {
  29
  30         public static final int NODE_SIZE = 10;
  31         public static final int TEN = 10;
  32         public static final int THOUSAND = 1000;
  33         public static final int MILLION = 1000000;
  34
  35         public static final int KEY_SIZE = TEN * THOUSAND;
  36
  37         public void test() throws Exception {
  38
  39                 Session session = getSession();
  40
  41                 VirtualGraphSupport vgss = session.getService(VirtualGraphSupport.class);
  42
  43                 long start = System.nanoTime();
  44
  45                 session.sync(new WriteResultRequest<Resource>(vgss.getMemoryPersistent(UUID.randomUUID().toString())) {
  46
  47                         @Override
  48                         public Resource perform(WriteGraph graph) throws DatabaseException {
  49
  50                                 BTreeUtils bu = BTreeUtils.create(graph, null, NODE_SIZE, false);
  51                                 for(int i=0;i<KEY_SIZE;i++) {
  52                                         Resource value = graph.newResource();
  53                                         graph.claim(value, L0.InstanceOf, null, L0.String);
  54                                         graph.claimValue(value, "Value" + i, Bindings.STRING);
  55                                         bu.insert(graph, Variant.ofInstance(i), value);
  56                                 }
  57                                 return bu.getTree();
  58
  59                         }
  60
  61                 });
  62
  63                 long duration = System.nanoTime()-start;
  64                 System.err.println("WRITE at " + 1e-9*duration + "s.");
  65 //              start = System.nanoTime();
  66 //
  67 //              session.sync(new UniqueRead<Resource>() {
  68 //
  69 //                      @Override
  70 //                      public Resource perform(ReadGraph graph) throws DatabaseException {
  71 //                              return BtreeUtils.search(graph, tree, 3);
  72 //                      }
  73 //
  74 //              });
  75 //
  76 //              duration = System.nanoTime()-start;
  77 //              System.err.println("SEEK SINGLE at " + 1e-9*duration + "s.");
  78 //              start = System.nanoTime();
  79 //
  80 //              session.sync(new ReadRequest() {
  81 //
  82 //                      @Override
  83 //                      public void run(ReadGraph graph) throws DatabaseException {
  84 //                              for(int i=0;i<KEY_SIZE;i++)
  85 //                                      BtreeUtils.search(graph, tree, i);
  86 //                      }
  87 //
  88 //              });
  89 //
  90 //              duration = System.nanoTime()-start;
  91 //              System.err.println("SEEK ALL at " + 1e-9*duration + "s.");
  92
  93         }
  94
  95 }