package com.orientechnologies.orient.core.index.sbtree.local;
import java.util.*;
import com.orientechnologies.orient.core.index.hashindex.local.cache.OCacheEntry;
import com.orientechnologies.orient.core.index.hashindex.local.cache.OCachePointer;
import com.orientechnologies.orient.core.storage.impl.local.paginated.wal.OLogSequenceNumber;
import org.testng.Assert;
import org.testng.annotations.Test;
import com.orientechnologies.common.directmemory.ODirectMemoryPointer;
import com.orientechnologies.common.serialization.types.OLongSerializer;
import com.orientechnologies.orient.core.db.record.OIdentifiable;
import com.orientechnologies.orient.core.serialization.serializer.binary.impl.OLinkSerializer;
import com.orientechnologies.orient.core.storage.impl.local.paginated.base.ODurablePage;
/**
* @author Andrey Lomakin
* @since 12.08.13
*/
@Test
public class SBTreeNonLeafBucketTest {
public void testInitialization() throws Exception {
ODirectMemoryPointer pointer = new ODirectMemoryPointer(OSBTreeBucket.MAX_PAGE_SIZE_BYTES + ODurablePage.PAGE_PADDING);
OCachePointer cachePointer = new OCachePointer(pointer, new OLogSequenceNumber(0, 0));
OCacheEntry cacheEntry = new OCacheEntry(0, 0, cachePointer, false);
cachePointer.incrementReferrer();
OSBTreeBucket<Long, OIdentifiable> treeBucket = new OSBTreeBucket<Long, OIdentifiable>(cacheEntry, false,
OLongSerializer.INSTANCE, null, OLinkSerializer.INSTANCE, ODurablePage.TrackMode.FULL);
Assert.assertEquals(treeBucket.size(), 0);
Assert.assertFalse(treeBucket.isLeaf());
treeBucket = new OSBTreeBucket<Long, OIdentifiable>(cacheEntry, OLongSerializer.INSTANCE, null, OLinkSerializer.INSTANCE,
ODurablePage.TrackMode.FULL);
Assert.assertEquals(treeBucket.size(), 0);
Assert.assertFalse(treeBucket.isLeaf());
Assert.assertEquals(treeBucket.getLeftSibling(), -1);
Assert.assertEquals(treeBucket.getRightSibling(), -1);
cachePointer.decrementReferrer();
}
public void testSearch() throws Exception {
long seed = System.currentTimeMillis();
System.out.println("testSearch seed : " + seed);
TreeSet<Long> keys = new TreeSet<Long>();
Random random = new Random(seed);
while (keys.size() < 2 * OSBTreeBucket.MAX_PAGE_SIZE_BYTES / OLongSerializer.LONG_SIZE) {
keys.add(random.nextLong());
}
ODirectMemoryPointer pointer = new ODirectMemoryPointer(OSBTreeBucket.MAX_PAGE_SIZE_BYTES + ODurablePage.PAGE_PADDING);
OCachePointer cachePointer = new OCachePointer(pointer, new OLogSequenceNumber(0, 0));
OCacheEntry cacheEntry = new OCacheEntry(0, 0, cachePointer, false);
cachePointer.incrementReferrer();
OSBTreeBucket<Long, OIdentifiable> treeBucket = new OSBTreeBucket<Long, OIdentifiable>(cacheEntry, false,
OLongSerializer.INSTANCE, null, OLinkSerializer.INSTANCE, ODurablePage.TrackMode.FULL);
int index = 0;
Map<Long, Integer> keyIndexMap = new HashMap<Long, Integer>();
for (Long key : keys) {
if (!treeBucket.addEntry(index,
new OSBTreeBucket.SBTreeEntry<Long, OIdentifiable>(random.nextInt(Integer.MAX_VALUE), random.nextInt(Integer.MAX_VALUE),
key, null), true))
break;
keyIndexMap.put(key, index);
index++;
}
Assert.assertEquals(treeBucket.size(), keyIndexMap.size());
for (Map.Entry<Long, Integer> keyIndexEntry : keyIndexMap.entrySet()) {
int bucketIndex = treeBucket.find(keyIndexEntry.getKey());
Assert.assertEquals(bucketIndex, (int) keyIndexEntry.getValue());
}
long prevRight = -1;
for (int i = 0; i < treeBucket.size(); i++) {
OSBTreeBucket.SBTreeEntry<Long, OIdentifiable> entry = treeBucket.getEntry(i);
if (prevRight > 0)
Assert.assertEquals(entry.leftChild, prevRight);
prevRight = entry.rightChild;
}
long prevLeft = -1;
for (int i = treeBucket.size() - 1; i >= 0; i--) {
OSBTreeBucket.SBTreeEntry<Long, OIdentifiable> entry = treeBucket.getEntry(i);
if (prevLeft > 0)
Assert.assertEquals(entry.rightChild, prevLeft);
prevLeft = entry.leftChild;
}
cachePointer.decrementReferrer();
}
public void testShrink() throws Exception {
long seed = System.currentTimeMillis();
System.out.println("testShrink seed : " + seed);
TreeSet<Long> keys = new TreeSet<Long>();
Random random = new Random(seed);
while (keys.size() < 2 * OSBTreeBucket.MAX_PAGE_SIZE_BYTES / OLongSerializer.LONG_SIZE) {
keys.add(random.nextLong());
}
ODirectMemoryPointer pointer = new ODirectMemoryPointer(OSBTreeBucket.MAX_PAGE_SIZE_BYTES + ODurablePage.PAGE_PADDING);
OCachePointer cachePointer = new OCachePointer(pointer, new OLogSequenceNumber(0, 0));
OCacheEntry cacheEntry = new OCacheEntry(0, 0, cachePointer, false);
cachePointer.incrementReferrer();
OSBTreeBucket<Long, OIdentifiable> treeBucket = new OSBTreeBucket<Long, OIdentifiable>(cacheEntry, false,
OLongSerializer.INSTANCE, null, OLinkSerializer.INSTANCE, ODurablePage.TrackMode.FULL);
int index = 0;
for (Long key : keys) {
if (!treeBucket.addEntry(index, new OSBTreeBucket.SBTreeEntry<Long, OIdentifiable>(index, index + 1, key, null), true))
break;
index++;
}
int originalSize = treeBucket.size();
treeBucket.shrink(treeBucket.size() / 2);
Assert.assertEquals(treeBucket.size(), index / 2);
index = 0;
final Map<Long, Integer> keyIndexMap = new HashMap<Long, Integer>();
Iterator<Long> keysIterator = keys.iterator();
while (keysIterator.hasNext() && index < treeBucket.size()) {
Long key = keysIterator.next();
keyIndexMap.put(key, index);
index++;
}
for (Map.Entry<Long, Integer> keyIndexEntry : keyIndexMap.entrySet()) {
int bucketIndex = treeBucket.find(keyIndexEntry.getKey());
Assert.assertEquals(bucketIndex, (int) keyIndexEntry.getValue());
}
for (Map.Entry<Long, Integer> keyIndexEntry : keyIndexMap.entrySet()) {
OSBTreeBucket.SBTreeEntry<Long, OIdentifiable> entry = treeBucket.getEntry(keyIndexEntry.getValue());
Assert.assertEquals(
entry,
new OSBTreeBucket.SBTreeEntry<Long, OIdentifiable>(keyIndexEntry.getValue(), keyIndexEntry.getValue() + 1, keyIndexEntry
.getKey(), null));
}
int keysToAdd = originalSize - treeBucket.size();
int addedKeys = 0;
while (keysIterator.hasNext() && index < originalSize) {
Long key = keysIterator.next();
if (!treeBucket.addEntry(index, new OSBTreeBucket.SBTreeEntry<Long, OIdentifiable>(index, index + 1, key, null), true))
break;
keyIndexMap.put(key, index);
index++;
addedKeys++;
}
for (Map.Entry<Long, Integer> keyIndexEntry : keyIndexMap.entrySet()) {
OSBTreeBucket.SBTreeEntry<Long, OIdentifiable> entry = treeBucket.getEntry(keyIndexEntry.getValue());
Assert.assertEquals(
entry,
new OSBTreeBucket.SBTreeEntry<Long, OIdentifiable>(keyIndexEntry.getValue(), keyIndexEntry.getValue() + 1, keyIndexEntry
.getKey(), null));
}
Assert.assertEquals(treeBucket.size(), originalSize);
Assert.assertEquals(addedKeys, keysToAdd);
cachePointer.decrementReferrer();
}
}