tests/org.simantics.db.tests/src/org/simantics/db/tests/performance/read/ReadHierarchicalNamesFromVirtualGraph.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.db.Resource;
  17 import org.simantics.db.Session;
  18 import org.simantics.db.VirtualGraph;
  19 import org.simantics.db.service.VirtualGraphSupport;
  20 import org.simantics.db.testing.base.ExistingDatabaseTest;
  21
  22 public class ReadHierarchicalNamesFromVirtualGraph extends ExistingDatabaseTest {
  23
  24         final private static String name = "name";
  25         int[] sizes = { 244, 64, 64 };
  26
  27         public void test() throws Exception {
  28
  29                 Session session = getSession();
  30
  31                 VirtualGraph graph = session.getService(VirtualGraphSupport.class).getMemoryPersistent(UUID.randomUUID().toString());
  32
  33                 // First build the test data
  34                 long start = System.nanoTime();
  35                 Resource root = session.syncRequest(HierarchicalNames.writeOnly2(name, sizes, graph));
  36                 long duration = System.nanoTime() - start;
  37                 System.out.println("write = " + 1e-9*duration);
  38
  39                 start = System.nanoTime();
  40                 session.syncRequest(HierarchicalNames.readAsync(root));
  41                 duration = System.nanoTime() - start;
  42                 System.out.println("cold start = " + 1e-9*duration);
  43
  44         }
  45
  46 }