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/*
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
[email protected]
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Created on Jun 21, 2008
*/
package com.bigdata.rdf.spo;
import java.util.Iterator;
import junit.framework.TestCase2;
import com.bigdata.bop.BOp;
import com.bigdata.bop.Constant;
import com.bigdata.bop.IPredicate;
import com.bigdata.bop.NV;
import com.bigdata.bop.Var;
import com.bigdata.btree.keys.KeyBuilder;
import com.bigdata.btree.keys.SuccessorUtil;
import com.bigdata.io.SerializerUtil;
import com.bigdata.rdf.internal.IV;
import com.bigdata.rdf.internal.VTE;
import com.bigdata.test.MockTermIdFactory;
import com.bigdata.util.Bytes;
import com.bigdata.util.BytesUtil;
import cutthecrap.utils.striterators.ICloseableIterator;
/**
* Test suite for {@link SPOKeyOrder}.
*
* @author Bryan Thompson
*/
public class TestSPOKeyOrder extends TestCase2 {
/**
*
*/
public TestSPOKeyOrder() {
}
/**
* @param name
*/
public TestSPOKeyOrder(String name) {
super(name);
}
private MockTermIdFactory factory;
@Override
protected void setUp() throws Exception {
super.setUp();
factory = new MockTermIdFactory();
}
@Override
protected void tearDown() throws Exception {
super.tearDown();
factory = null;
}
private IV tid(final long tidIsIgnored) {
return factory.newTermId(VTE.URI);
}
/**
* Writes the serialized size of an instance on stdout. It is an amazing 61
* bytes. You can serialize just the {@link SPOKeyOrder#index()} byte value
* for an amazing 60 byte savings per instance.
*/
public void test_serializationSize() {
if (log.isInfoEnabled())
log.info("serializedSize="
+ SerializerUtil.serialize(SPOKeyOrder.SPO).length
+ " bytes");
}
/**
* Unit tests verifies all of the triple key encoding orders. It encodes a
* known key in each order in turn and verifies by decoding using the SPO
* key order and checking against the expected permutation of the (s,p,o)
* values.
*/
public void test_keyOrder_triples() {
final KeyBuilder keyBuilder = new KeyBuilder(4 * Bytes.SIZEOF_LONG);
final IV S = tid(1), P = tid(2), O = tid(3), C = tid(4);
final SPO expected = new SPO(S, P, O, C);
assertSPOCEquals(new SPO(S, P, O), SPOKeyOrder.SPO
.decodeKey(SPOKeyOrder.SPO.encodeKey(keyBuilder, expected)));
assertSPOCEquals(new SPO(P, O, S), SPOKeyOrder.SPO
.decodeKey(SPOKeyOrder.POS.encodeKey(keyBuilder, expected)));
assertSPOCEquals(new SPO(O, S, P), SPOKeyOrder.SPO
.decodeKey(SPOKeyOrder.OSP.encodeKey(keyBuilder, expected)));
}
/**
* Unit tests verifies all of the quad key encoding orders. It encodes a
* known key in each order in turn and verifies by decoding using the SPOC
* key order and checking against the expected permutation of the (s,p,o,c)
* values.
*/
public void test_keyOrder_quads() {
final KeyBuilder keyBuilder = new KeyBuilder(4 * Bytes.SIZEOF_LONG);
final IV S = tid(1), P = tid(2), O = tid(3), C = tid(4);
final SPO expected = new SPO(S, P, O, C);
assertSPOCEquals(new SPO(S, P, O, C), SPOKeyOrder.SPOC
.decodeKey(SPOKeyOrder.SPOC.encodeKey(keyBuilder, expected)));
assertSPOCEquals(new SPO(P, O, C, S), SPOKeyOrder.SPOC
.decodeKey(SPOKeyOrder.POCS.encodeKey(keyBuilder, expected)));
assertSPOCEquals(new SPO(O, C, S, P), SPOKeyOrder.SPOC
.decodeKey(SPOKeyOrder.OCSP.encodeKey(keyBuilder, expected)));
assertSPOCEquals(new SPO(C, S, P, O), SPOKeyOrder.SPOC
.decodeKey(SPOKeyOrder.CSPO.encodeKey(keyBuilder, expected)));
assertSPOCEquals(new SPO(P, C, S, O), SPOKeyOrder.SPOC
.decodeKey(SPOKeyOrder.PCSO.encodeKey(keyBuilder, expected)));
assertSPOCEquals(new SPO(S, O, P, C), SPOKeyOrder.SPOC
.decodeKey(SPOKeyOrder.SOPC.encodeKey(keyBuilder, expected)));
}
protected void assertSPOCEquals(final SPO e, final SPO a) {
assertEquals("s", e.s(), a.s());
assertEquals("p", e.p(), a.p());
assertEquals("o", e.o(), a.o());
assertEquals("c", e.c(), a.c());
}
/**
* Verify that
* {@link SPOKeyOrder#encodeKey(com.bigdata.btree.keys.IKeyBuilder, ISPO)}
* and {@link SPOKeyOrder#decodeKey(byte[])} round trip correctly.
*/
public void test_encodeDecode() {
final KeyBuilder keyBuilder = new KeyBuilder(4 * Bytes.SIZEOF_LONG);
for (int i = SPOKeyOrder.FIRST_QUAD_INDEX; i <= SPOKeyOrder.LAST_QUAD_INDEX; i++) {
final SPOKeyOrder keyOrder = SPOKeyOrder.valueOf(i);
final SPO expected = new SPO(tid(1), tid(2), tid(3), tid(4));
final byte[] key = keyOrder.encodeKey(keyBuilder, expected);
final SPO actual = keyOrder.decodeKey(key);
assertSPOCEquals(expected, actual);
}
}
/**
* Unit test examines the correct formulation of the from/to keys for the
* POCS key order.
*/
public void test_getFromKey_getToKey_quads() {
final IV P = tid(1);
final SPOPredicate pred = new SPOPredicate(new BOp[]{
Var.var("s"), new Constant(P), Var.var("o"), Var.var("c")},
new NV(IPredicate.Annotations.RELATION_NAME,new String[]{"testRelation"}));
final KeyBuilder keyBuilder = new KeyBuilder();
final SPOKeyOrder keyOrder = SPOKeyOrder.POCS;
final byte[] fromKey = P.encode(keyBuilder.reset())
.getKey();
final byte[] toKey = SuccessorUtil.successor(fromKey.clone());
if (log.isInfoEnabled()) {
log.info("fromKey=" + BytesUtil.toString(fromKey));
log.info(" toKey=" + BytesUtil.toString(toKey));
}
if (!BytesUtil.bytesEqual(fromKey, keyOrder
.getFromKey(keyBuilder, pred))) {
fail("fromKey :: expected=" + BytesUtil.toString(fromKey)
+ ", actual="
+ BytesUtil.toString(keyOrder.getFromKey(keyBuilder, pred)));
}
if (!BytesUtil.bytesEqual(toKey, keyOrder.getToKey(keyBuilder, pred))) {
fail("toKey :: expected=" + BytesUtil.toString(toKey) + ", actual="
+ BytesUtil.toString(keyOrder.getToKey(keyBuilder, pred)));
}
}
/**
* Unit test examines the correct formulation of the from/to keys for the
* POS key order.
*/
public void test_getFromKey_getToKey_triples() {
final IV P = tid(1);
final SPOPredicate pred = new SPOPredicate(new BOp[] { Var.var("s"),
new Constant(P), Var.var("o") }, new NV(
IPredicate.Annotations.RELATION_NAME,
new String[] { "testRelation" }));// , Var.var("c"));
final KeyBuilder keyBuilder = new KeyBuilder();
final SPOKeyOrder keyOrder = SPOKeyOrder.POS;
final byte[] fromKey = P.encode(keyBuilder.reset()).getKey();
final byte[] toKey = SuccessorUtil.successor(fromKey.clone());
if (log.isInfoEnabled()) {
log.info("fromKey=" + BytesUtil.toString(fromKey));
log.info(" toKey=" + BytesUtil.toString(toKey));
}
if (!BytesUtil.bytesEqual(fromKey, keyOrder
.getFromKey(keyBuilder, pred))) {
fail("fromKey :: expected=" + BytesUtil.toString(fromKey)
+ ", actual="
+ BytesUtil.toString(keyOrder.getFromKey(keyBuilder, pred)));
}
if (!BytesUtil.bytesEqual(toKey, keyOrder.getToKey(keyBuilder, pred))) {
fail("toKey :: expected=" + BytesUtil.toString(toKey) + ", actual="
+ BytesUtil.toString(keyOrder.getToKey(keyBuilder, pred)));
}
}
public void test_spoOnlyKeyOrder_iterator() {
assertSameIteratorAnyOrder(new SPOKeyOrder[] { SPOKeyOrder.SPO },
SPOKeyOrder.spoOnlyKeyOrderIterator());
}
public void test_spocOnlyKeyOrder_iterator() {
assertSameIteratorAnyOrder(new SPOKeyOrder[] { SPOKeyOrder.SPOC },
SPOKeyOrder.spocOnlyKeyOrderIterator());
}
public void test_tripleStoreKeyOrders_iterator() {
assertSameIteratorAnyOrder(new SPOKeyOrder[] { SPOKeyOrder.SPO,
SPOKeyOrder.POS, SPOKeyOrder.OSP }, SPOKeyOrder
.tripleStoreKeyOrderIterator());
}
public void test_quadStoreKeyOrders_iterator() {
assertSameIteratorAnyOrder(new SPOKeyOrder[] { SPOKeyOrder.SPOC,
SPOKeyOrder.POCS, SPOKeyOrder.OCSP, SPOKeyOrder.CSPO,
SPOKeyOrder.PCSO, SPOKeyOrder.SOPC, }, SPOKeyOrder
.quadStoreKeyOrderIterator());
}
/**
* Verifies that the iterator visits the specified objects in some arbitrary
* ordering and that the iterator is exhausted once all expected objects
* have been visited. The implementation uses a selection without
* replacement "pattern".
*/
@SuppressWarnings("unchecked")
static public void assertSameIteratorAnyOrder(final Object[] expected,
final Iterator actual) {
assertSameIteratorAnyOrder("", expected, actual);
}
/**
* Verifies that the iterator visits the specified objects in some arbitrary
* ordering and that the iterator is exhausted once all expected objects
* have been visited. The implementation uses a selection without
* replacement "pattern".
*/
@SuppressWarnings("unchecked")
static public void assertSameIteratorAnyOrder(final String msg,
final Object[] expected, final Iterator actual) {
try {
// Populate a map that we will use to realize the match and
// selection without replacement logic.
final int nrange = expected.length;
java.util.Map range = new java.util.HashMap();
for (int j = 0; j < nrange; j++) {
range.put(expected[j], expected[j]);
}
// Do selection without replacement for the objects visited by
// iterator.
for (int j = 0; j < nrange; j++) {
if (!actual.hasNext()) {
fail(msg + ": Index exhausted while expecting more object(s)"
+ ": index=" + j);
}
final Object actualObject = actual.next();
if (range.remove(actualObject) == null) {
fail("Object not expected" + ": index=" + j + ", object="
+ actualObject);
}
}
if (actual.hasNext()) {
fail("Iterator will deliver too many objects.");
}
} finally {
if(actual instanceof ICloseableIterator) {
((ICloseableIterator)actual).close();
}
}
}
}
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