1 /*******************************************************************************
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.db.tests.performance.read;
14 import java.util.ArrayList;
15 import java.util.Collection;
16 import java.util.UUID;
18 import org.simantics.databoard.Bindings;
19 import org.simantics.databoard.binding.mutable.Variant;
20 import org.simantics.datatypes.utils.BTreeUtils;
21 import org.simantics.db.Resource;
22 import org.simantics.db.Session;
23 import org.simantics.db.VirtualGraph;
24 import org.simantics.db.WriteGraph;
25 import org.simantics.db.WriteOnlyGraph;
26 import org.simantics.db.common.request.WriteOnlyResultRequest;
27 import org.simantics.db.common.request.WriteRequest;
28 import org.simantics.db.common.request.WriteResultRequest;
29 import org.simantics.db.exception.DatabaseException;
30 import org.simantics.db.service.VirtualGraphSupport;
31 import org.simantics.db.testing.base.ExistingDatabaseTest;
32 import org.simantics.utils.datastructures.Pair;
35 public class BtreeTest2 extends ExistingDatabaseTest {
37 public static final int NODE_SIZE = 500;
38 public static final int TEN = 10;
39 public static final int HUNDRED = 100;
40 public static final int THOUSAND = 1000;
41 public static final int MILLION = 1000000;
43 public static final int KEY_SIZE = THOUSAND;
44 public static final int ROUNDS = THOUSAND;
46 public void test() throws Exception {
48 Session session = getSession();
50 VirtualGraphSupport vgss = session.getService(VirtualGraphSupport.class);
51 VirtualGraph vg = vgss.getMemoryPersistent(UUID.randomUUID().toString());
53 final Resource tree = session.sync(new WriteResultRequest<Resource>(vg) {
56 public Resource perform(WriteGraph graph) throws DatabaseException {
58 return BTreeUtils.create(graph, null, NODE_SIZE, false).getTree();
64 System.err.println("tree=" + tree);
66 for(int i=0;i<ROUNDS;i++) {
68 long start = System.nanoTime();
70 final Collection<Pair<Variant, Resource>> values = session.sync(new WriteOnlyResultRequest<Collection<Pair<Variant, Resource>>>(vg) {
73 public Collection<Pair<Variant, Resource>> perform(WriteOnlyGraph graph) throws DatabaseException {
75 Collection<Pair<Variant, Resource>> values = new ArrayList<Pair<Variant, Resource>>();
76 for(int i=0;i<KEY_SIZE;i++) {
77 Resource value = graph.newResource();
78 graph.claim(value, L0.InstanceOf, null, L0.String);
79 graph.claimValue(value, "Value" + i, Bindings.STRING);
80 values.add(Pair.make(Variant.ofInstance(i), value));
88 long duration = System.nanoTime()-start;
89 System.err.println("DATA at " + 1e-9*duration + "s.");
90 start = System.nanoTime();
92 session.sync(new WriteRequest(vg) {
95 public void perform(WriteGraph graph) throws DatabaseException {
97 BTreeUtils bu = BTreeUtils.create(graph, tree, NODE_SIZE, false);
98 bu.insertAll(graph, values);
104 duration = System.nanoTime()-start;
105 System.err.println("INSERT at " + 1e-9*duration + "s.");