org.hsqldb.test.TestHashStructures Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of hsqldb Show documentation
Show all versions of hsqldb Show documentation
HSQLDB - Lightweight 100% Java SQL Database Engine
/* Copyright (c) 2001-2019, The HSQL Development Group
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the HSQL Development Group nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.hsqldb.test;
import java.util.Random;
import org.hsqldb.lib.DoubleIntIndex;
import org.hsqldb.lib.StopWatch;
import junit.framework.TestCase;
/**
* @author Fred Toussi (fredt@users dot sourceforge.net)
*/
public class TestHashStructures extends TestCase {
public TestHashStructures(String s) {
super(s);
}
Random randomgen = new java.util.Random();
public void testHashMap() throws Exception {
boolean failed = false;
int testSize = 33;
org.hsqldb.lib.HashMap hMap = new org.hsqldb.lib.HashMap();
org.hsqldb.lib.IntKeyHashMap hIntMap =
new org.hsqldb.lib.IntKeyHashMap();
java.util.HashMap uMap = new java.util.HashMap();
try {
populateBySerialIntKeys(uMap, hMap, testSize);
compareByUIterator(uMap, hMap);
compareByHIterator(uMap, hMap);
// -
populateByRandomIntKeys(uMap, hMap, testSize);
compareByUIterator(uMap, hMap);
compareByHIterator(uMap, hMap);
//
depopulateRandomly(uMap, hMap, 20);
compareByUIterator(uMap, hMap);
compareByHIterator(uMap, hMap);
// -
populateBySerialIntKeys(uMap, hMap, testSize);
compareByUIterator(uMap, hMap);
compareByHIterator(uMap, hMap);
//
depopulateByIterator(uMap, hMap, 20);
compareByUIterator(uMap, hMap);
compareByHIterator(uMap, hMap);
} catch (Exception e) {
failed = true;
}
assertTrue(!failed);
}
public void testIntKeyHashMap() throws Exception {
boolean failed = false;
int testSize = 33;
org.hsqldb.lib.IntKeyHashMap hIntMap =
new org.hsqldb.lib.IntKeyHashMap();
java.util.HashMap uMap = new java.util.HashMap();
try {
populateBySerialIntKeysInt(uMap, hIntMap, testSize);
compareByUIteratorInt(uMap, hIntMap);
populateByRandomIntKeysInt(uMap, hIntMap, testSize);
compareByUIteratorInt(uMap, hIntMap);
compareByHIteratorInt(uMap, hIntMap);
//
depopulateByIntIterator(uMap, hIntMap, 20);
compareByUIteratorInt(uMap, hIntMap);
compareByHIteratorInt(uMap, hIntMap);
//
clearByIntIterator(uMap, hIntMap);
compareByUIteratorInt(uMap, hIntMap);
compareByHIteratorInt(uMap, hIntMap);
// -
populateBySerialIntKeysInt(uMap, hIntMap, testSize);
compareByUIteratorInt(uMap, hIntMap);
compareByHIteratorInt(uMap, hIntMap);
//
clearByIntIterator(uMap, hIntMap);
compareByUIteratorInt(uMap, hIntMap);
compareByHIteratorInt(uMap, hIntMap);
} catch (Exception e) {
failed = true;
}
assertTrue(!failed);
}
public void testHashMappedList() throws Exception {
boolean failed = false;
int testSize = 33;
org.hsqldb.lib.HashMappedList hMap =
new org.hsqldb.lib.HashMappedList();
java.util.HashMap uMap = new java.util.HashMap();
try {
populateBySerialIntKeys(uMap, hMap, testSize);
compareByUIterator(uMap, hMap);
compareByHIterator(uMap, hMap);
populateByRandomIntKeys(uMap, hMap, testSize);
compareByUIterator(uMap, hMap);
compareByHIterator(uMap, hMap);
depopulateRandomly(uMap, hMap, 20);
compareByUIterator(uMap, hMap);
compareByHIterator(uMap, hMap);
populateByRandomIntKeys(uMap, hMap, testSize);
compareByUIterator(uMap, hMap);
compareByHIterator(uMap, hMap);
depopulateRandomly(uMap, hMap, 20);
populateBySerialIntKeys(uMap, hMap, testSize);
compareByUIterator(uMap, hMap);
compareByHIterator(uMap, hMap);
} catch (Exception e) {
failed = true;
}
assertTrue(!failed);
}
public void testDoubleIntLookup() throws Exception {
boolean failed = false;
int testSize = 512;
org.hsqldb.lib.IntKeyHashMap hIntMap =
new org.hsqldb.lib.IntKeyHashMap();
DoubleIntIndex intLookup = new DoubleIntIndex(12, false);
try {
intLookup.setKeysSearchTarget();
populateBySerialIntKeysInt(intLookup, hIntMap, testSize);
compareByHIteratorInt(intLookup, hIntMap);
populateByRandomIntKeysInt(intLookup, hIntMap, testSize);
compareByHIteratorInt(intLookup, hIntMap);
} catch (Exception e) {
failed = true;
}
assertTrue(!failed);
}
public void testDoubleIntSpeed() throws Exception {
boolean failed = false;
int testSize = 500;
org.hsqldb.lib.IntKeyHashMap hIntMap =
new org.hsqldb.lib.IntKeyHashMap();
DoubleIntIndex intLookup = new DoubleIntIndex(testSize, false);
intLookup.setKeysSearchTarget();
populateByRandomIntKeysInt(intLookup, hIntMap, testSize);
compareByHIteratorInt(intLookup, hIntMap);
int[] sample = getSampleIntArray(intLookup, 100);
int[] sampleVals = new int[sample.length];
int i = 0;
int j = 0;
StopWatch sw = new StopWatch();
try {
for (j = 0; j < 10000; j++) {
for (i = 0; i < sample.length; i++) {
int pos = intLookup.findFirstEqualKeyIndex(sample[i]);
sampleVals[i] = intLookup.getValue(pos);
intLookup.remove(pos);
}
for (i = 0; i < sample.length; i++) {
intLookup.addUnique(sample[i], sampleVals[i]);
}
}
System.out.println(
sw.elapsedTimeToMessage("Double int table times"));
intLookup.findFirstEqualKeyIndex(0); // sort
compareByHIteratorInt(intLookup, hIntMap);
} catch (Exception e) {
System.out.println(
sw.elapsedTimeToMessage("Double int table error: i =" + i));
failed = true;
}
assertTrue(!failed);
}
int[] getSampleIntArray(org.hsqldb.lib.DoubleIntIndex index, int size) {
int[] array = new int[size];
org.hsqldb.lib.IntKeyHashMap map = new org.hsqldb.lib.IntKeyHashMap();
for (; map.size() < size; ) {
int pos = nextIntRandom(randomgen, index.size());
map.put(pos, null);
}
org.hsqldb.lib.Iterator it = map.keySet().iterator();
for (int i = 0; i < size; i++) {
int pos = it.nextInt();
array[i] = index.getKey(pos);
}
return array;
}
void populateBySerialIntKeys(java.util.HashMap uMap,
org.hsqldb.lib.HashMap hMap,
int testSize) throws Exception {
for (int i = 0; i < testSize; i++) {
int intValue = randomgen.nextInt();
uMap.put(Integer.valueOf(i), Integer.valueOf(intValue));
hMap.put(Integer.valueOf(i), Integer.valueOf(intValue));
if (uMap.size() != hMap.size()) {
throw new Exception("HashMap size mismatch");
}
}
}
void populateBySerialIntKeysInt(java.util.HashMap uMap,
org.hsqldb.lib.IntKeyHashMap hMap,
int testSize) throws Exception {
for (int i = 0; i < testSize; i++) {
int intValue = randomgen.nextInt();
uMap.put(Integer.valueOf(i), Integer.valueOf(intValue));
hMap.put(i, Integer.valueOf(intValue));
if (uMap.size() != hMap.size()) {
throw new Exception("HashMap size mismatch");
}
}
}
void populateBySerialIntKeysInt(DoubleIntIndex intLookup,
org.hsqldb.lib.IntKeyHashMap hMap,
int testSize) throws Exception {
for (int i = 0; i < testSize; i++) {
int intValue = randomgen.nextInt();
intLookup.addUnique(i, intValue);
hMap.put(i, Integer.valueOf(intValue));
if (intLookup.size() != hMap.size()) {
throw new Exception("HashMap size mismatch");
}
}
}
void populateByRandomIntKeysInt(DoubleIntIndex intLookup,
org.hsqldb.lib.IntKeyHashMap hMap,
int testSize) throws Exception {
for (int i = 0; i < testSize; i++) {
int intValue = randomgen.nextInt();
intLookup.addUnique(intValue, i);
hMap.put(intValue, Integer.valueOf(i));
// actually this can happen as duplicates are allowed in DoubleIntTable
if (intLookup.size() != hMap.size()) {
throw new Exception("Duplicate random in int lookup");
}
}
}
void populateByRandomIntKeys(java.util.HashMap uMap,
org.hsqldb.lib.HashMap hMap,
int testSize) throws Exception {
for (int i = 0; i < testSize; i++) {
int intValue = randomgen.nextInt();
uMap.put(Integer.valueOf(intValue), Integer.valueOf(i));
hMap.put(Integer.valueOf(intValue), Integer.valueOf(i));
if (uMap.size() != hMap.size()) {
throw new Exception("HashMap size mismatch");
}
}
}
void populateByRandomIntKeysInt(java.util.HashMap uMap,
org.hsqldb.lib.IntKeyHashMap hMap,
int testSize) throws Exception {
for (int i = 0; i < testSize; i++) {
int intValue = randomgen.nextInt();
uMap.put(Integer.valueOf(intValue), Integer.valueOf(i));
hMap.put(intValue, Integer.valueOf(i));
if (uMap.size() != hMap.size()) {
throw new Exception("HashMap size mismatch");
}
}
}
void depopulateRandomly(java.util.HashMap uMap,
org.hsqldb.lib.HashMap hMap,
int testCount) throws Exception {
int removeCount = 0;
int size = uMap.size();
if (testCount > size / 2) {
testCount = size / 2;
}
while (removeCount < testCount) {
java.util.Iterator uIt = uMap.keySet().iterator();
for (int i = 0; uIt.hasNext(); i++) {
Object uKey = uIt.next();
int intValue = randomgen.nextInt(size);
if (intValue == i) {
uIt.remove();
hMap.remove(uKey);
removeCount++;
}
if (uMap.size() != hMap.size()) {
throw new Exception("HashMap size mismatch");
}
}
}
}
void depopulateByIterator(java.util.HashMap uMap,
org.hsqldb.lib.HashMap hMap,
int testCount) throws Exception {
org.hsqldb.lib.Iterator hIt = hMap.keySet().iterator();
System.out.println(uMap.size());
for (int i = 0; hIt.hasNext(); i++) {
Object key = hIt.next();
int check = randomgen.nextInt(2);
if (check == i % 2) {
hIt.remove();
uMap.remove(key);
}
if (uMap.size() != hMap.size()) {
throw new Exception("HashMap size mismatch");
}
}
System.out.println(uMap.size());
}
void depopulateByIntIterator(java.util.HashMap uMap,
org.hsqldb.lib.IntKeyHashMap hIntMap,
int testCount) throws Exception {
org.hsqldb.lib.Iterator hIt = hIntMap.keySet().iterator();
System.out.println(uMap.size());
for (int i = 0; hIt.hasNext(); i++) {
Object key = Integer.valueOf(hIt.nextInt());
int check = randomgen.nextInt(2);
if (check == i % 2) {
hIt.remove();
uMap.remove(key);
}
if (uMap.size() != hIntMap.size()) {
throw new Exception("HashMap size mismatch");
}
}
System.out.println(uMap.size());
}
void clearByIntIterator(java.util.HashMap uMap,
org.hsqldb.lib.IntKeyHashMap hIntMap)
throws Exception {
org.hsqldb.lib.Iterator hIt = hIntMap.keySet().iterator();
System.out.println(uMap.size());
for (int i = 0; hIt.hasNext(); i++) {
Object key = Integer.valueOf(hIt.nextInt());
hIt.remove();
uMap.remove(key);
if (uMap.size() != hIntMap.size()) {
throw new Exception("HashMap size mismatch");
}
}
System.out.println(uMap.size());
}
void compareByUIterator(java.util.HashMap uMap,
org.hsqldb.lib.HashMap hMap) throws Exception {
java.util.Iterator uIt = uMap.keySet().iterator();
for (int i = 0; uIt.hasNext(); i++) {
Object uKey = uIt.next();
Object oU = uMap.get(uKey);
Object hU = hMap.get(uKey);
if (!oU.equals(hU)) {
throw new Exception("HashMap value mismatch");
}
}
}
void compareByHIterator(java.util.HashMap uMap,
org.hsqldb.lib.HashMap hMap) throws Exception {
org.hsqldb.lib.Iterator hIt = hMap.keySet().iterator();
for (int i = 0; hIt.hasNext(); i++) {
Object hKey = hIt.next();
Object oU = uMap.get(hKey);
Object hU = hMap.get(hKey);
if (!oU.equals(hU)) {
throw new Exception("HashMap value mismatch");
}
}
}
void compareByUIteratorInt(java.util.HashMap uMap,
org.hsqldb.lib.IntKeyHashMap hMap)
throws Exception {
java.util.Iterator uIt = uMap.keySet().iterator();
for (int i = 0; uIt.hasNext(); i++) {
Object uKey = uIt.next();
Object oU = uMap.get(uKey);
Object hU = hMap.get(((Integer) uKey).intValue());
if (!oU.equals(hU)) {
throw new Exception("HashMap value mismatch");
}
}
}
void compareByHIteratorInt(java.util.HashMap uMap,
org.hsqldb.lib.IntKeyHashMap hMap)
throws Exception {
org.hsqldb.lib.Iterator hIt = hMap.keySet().iterator();
for (int i = 0; hIt.hasNext(); i++) {
Object hKey = Integer.valueOf(hIt.nextInt());
Object oU = uMap.get(hKey);
Object hU = hMap.get(((Integer) hKey).intValue());
if (!oU.equals(hU)) {
throw new Exception("HashMap value mismatch");
}
}
}
void compareByHIteratorInt(DoubleIntIndex intLookup,
org.hsqldb.lib.IntKeyHashMap hMap)
throws Exception {
org.hsqldb.lib.Iterator hIt = hMap.keySet().iterator();
for (int i = 0; hIt.hasNext(); i++) {
int hK = hIt.nextInt();
int lookup = intLookup.findFirstEqualKeyIndex(hK);
int lV = intLookup.getValue(lookup);
Integer hV = (Integer) hMap.get(hK);
if (hV.intValue() != lV) {
throw new Exception("HashMap value mismatch");
}
}
}
int nextIntRandom(Random r, int range) {
int b = r.nextInt();
if (b == Integer.MIN_VALUE) {
b = Integer.MAX_VALUE;
}
b = Math.abs(b);
return b % range;
}
public static void main(String[] argv) {
try {
TestHashStructures test = new TestHashStructures("testHashMap");
test.testHashMap();
test.testIntKeyHashMap();
test.testHashMappedList();
test.testDoubleIntLookup();
test.testDoubleIntSpeed();
} catch (Exception e) {
e.printStackTrace();
}
}
}