本文整理汇总了Java中org.h2.mvstore.MVMap.openVersion方法的典型用法代码示例。如果您正苦于以下问题：Java MVMap.openVersion方法的具体用法？Java MVMap.openVersion怎么用？Java MVMap.openVersion使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.h2.mvstore.MVMap的用法示例。
在下文中一共展示了MVMap.openVersion方法的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: testVersionsToKeep
import org.h2.mvstore.MVMap; //导入方法依赖的package包/类
private void testVersionsToKeep() throws Exception {
MVStore s = new MVStore.Builder().open();
MVMap<Integer, Integer> map;
map = s.openMap("data");
for (int i = 0; i < 20; i++) {
long version = s.getCurrentVersion();
map.put(i, i);
s.commit();
if (version >= 6) {
map.openVersion(version - 5);
try {
map.openVersion(version - 6);
fail();
} catch (IllegalArgumentException e) {
// expected
}
}
}
}
示例2: testVersionsToKeep2
import org.h2.mvstore.MVMap; //导入方法依赖的package包/类
private void testVersionsToKeep2() {
MVStore s = new MVStore.Builder().autoCommitDisabled().open();
s.setVersionsToKeep(2);
final MVMap<Integer, String> m = s.openMap("data");
s.commit();
assertEquals(1, s.getCurrentVersion());
m.put(1, "version 1");
s.commit();
assertEquals(2, s.getCurrentVersion());
m.put(1, "version 2");
s.commit();
assertEquals(3, s.getCurrentVersion());
m.put(1, "version 3");
s.commit();
m.put(1, "version 4");
assertEquals("version 4", m.openVersion(4).get(1));
assertEquals("version 3", m.openVersion(3).get(1));
assertEquals("version 2", m.openVersion(2).get(1));
new AssertThrows(IllegalArgumentException.class) {
@Override
public void test() throws Exception {
m.openVersion(1);
}
};
s.close();
}
示例3: testOldVersion
import org.h2.mvstore.MVMap; //导入方法依赖的package包/类
private void testOldVersion() {
MVStore s;
for (int op = 0; op <= 1; op++) {
for (int i = 0; i < 5; i++) {
s = openStore(null);
s.setVersionsToKeep(Integer.MAX_VALUE);
MVMap<String, String> m;
m = s.openMap("data");
for (int j = 0; j < 5; j++) {
if (op == 1) {
m.put("1", "" + s.getCurrentVersion());
}
s.commit();
}
for (int j = 0; j < s.getCurrentVersion(); j++) {
MVMap<String, String> old = m.openVersion(j);
if (op == 1) {
assertEquals("" + j, old.get("1"));
}
}
s.close();
}
}
}
示例4: testConcurrentChangeAndGetVersion
import org.h2.mvstore.MVMap; //导入方法依赖的package包/类
private void testConcurrentChangeAndGetVersion() throws InterruptedException {
for (int test = 0; test < 10; test++) {
final MVStore s = new MVStore.Builder().
autoCommitDisabled().open();
s.setVersionsToKeep(10);
final MVMap<Integer, Integer> m = s.openMap("data");
m.put(1, 1);
Task task = new Task() {
@Override
public void call() throws Exception {
while (!stop) {
m.put(1, 1);
s.commit();
}
}
};
task.execute();
Thread.sleep(1);
for (int i = 0; i < 10000; i++) {
if (task.isFinished()) {
break;
}
for (int j = 0; j < 20; j++) {
m.put(1, 1);
s.commit();
}
s.setVersionsToKeep(15);
long version = s.getCurrentVersion() - 1;
try {
m.openVersion(version);
} catch (IllegalArgumentException e) {
// ignore
}
s.setVersionsToKeep(20);
}
task.get();
s.commit();
s.close();
}
FileUtils.deleteRecursive("memFS:", false);
}
示例5: testExampleMvcc
import org.h2.mvstore.MVMap; //导入方法依赖的package包/类
private void testExampleMvcc() {
String fileName = getBaseDir() + "/testExampleMvcc.h3";
FileUtils.delete(fileName);
// open the store (in-memory if fileName is null)
MVStore s = MVStore.open(fileName);
// create/get the map named "data"
MVMap<Integer, String> map = s.openMap("data");
// add some data
map.put(1, "Hello");
map.put(2, "World");
// get the current version, for later use
long oldVersion = s.getCurrentVersion();
// from now on, the old version is read-only
s.commit();
// more changes, in the new version
// changes can be rolled back if required
// changes always go into "head" (the newest version)
map.put(1, "Hi");
map.remove(2);
// access the old data (before the commit)
MVMap<Integer, String> oldMap =
map.openVersion(oldVersion);
// print the old version (can be done
// concurrently with further modifications)
// this will print "Hello" and "World":
// System.out.println(oldMap.get(1));
assertEquals("Hello", oldMap.get(1));
// System.out.println(oldMap.get(2));
assertEquals("World", oldMap.get(2));
// print the newest version ("Hi")
// System.out.println(map.get(1));
assertEquals("Hi", map.get(1));
// close the store
s.close();
}
示例6: testVersion
import org.h2.mvstore.MVMap; //导入方法依赖的package包/类
private void testVersion() {
String fileName = getBaseDir() + "/testVersion.h3";
FileUtils.delete(fileName);
MVStore s;
s = openStore(fileName);
s.setVersionsToKeep(100);
s.setAutoCommitDelay(0);
s.setRetentionTime(Integer.MAX_VALUE);
MVMap<String, String> m = s.openMap("data");
s.commit();
long first = s.getCurrentVersion();
m.put("0", "test");
s.commit();
m.put("1", "Hello");
m.put("2", "World");
for (int i = 10; i < 20; i++) {
m.put("" + i, "data");
}
long old = s.getCurrentVersion();
s.commit();
m.put("1", "Hallo");
m.put("2", "Welt");
MVMap<String, String> mFirst;
mFirst = m.openVersion(first);
assertEquals(0, mFirst.size());
MVMap<String, String> mOld;
assertEquals("Hallo", m.get("1"));
assertEquals("Welt", m.get("2"));
mOld = m.openVersion(old);
assertEquals("Hello", mOld.get("1"));
assertEquals("World", mOld.get("2"));
assertTrue(mOld.isReadOnly());
s.getCurrentVersion();
long old3 = s.commit();
// the old version is still available
assertEquals("Hello", mOld.get("1"));
assertEquals("World", mOld.get("2"));
mOld = m.openVersion(old3);
assertEquals("Hallo", mOld.get("1"));
assertEquals("Welt", mOld.get("2"));
m.put("1", "Hi");
assertEquals("Welt", m.remove("2"));
s.close();
s = openStore(fileName);
m = s.openMap("data");
assertEquals("Hi", m.get("1"));
assertEquals(null, m.get("2"));
mOld = m.openVersion(old3);
assertEquals("Hallo", mOld.get("1"));
assertEquals("Welt", mOld.get("2"));
try {
m.openVersion(-3);
fail();
} catch (IllegalArgumentException e) {
// expected
}
s.close();
}