private void testSetting() {
String fileName = getBaseDir() + "/testSetting.h3";
FileUtils.delete(fileName);
MVStore s = MVStore.open(fileName);
assertEquals(0, s.getCurrentVersion());
assertEquals(0, s.getStoreVersion());
s.setStoreVersion(1);
assertEquals(null, s.getSetting("hello"));
s.setSetting("test", "Hello");
assertEquals("Hello", s.getSetting("test"));
s.close();
s = MVStore.open(fileName);
assertEquals(0, s.getCurrentVersion());
assertEquals(0, s.getStoreVersion());
s.setStoreVersion(1);
assertEquals(null, s.getSetting("hello"));
s.setSetting("test", "Hello");
assertEquals("Hello", s.getSetting("test"));
s.store();
s.close();
s = MVStore.open(fileName);
assertEquals(1, s.getCurrentVersion());
assertEquals(1, s.getStoreVersion());
assertEquals("Hello", s.getSetting("test"));
s.close();
}
private void testVersion() {
String fileName = getBaseDir() + "/testVersion.h3";
FileUtils.delete(fileName);
MVStore s;
s = openStore(fileName);
MVMap<String, String> m;
s = openStore(fileName);
m = s.openMap("data", String.class, String.class);
long first = s.getCurrentVersion();
s.incrementVersion();
m.put("1", "Hello");
m.put("2", "World");
for (int i = 10; i < 20; i++) {
m.put("" + i, "data");
}
long old = s.getCurrentVersion();
s.incrementVersion();
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();
s.setRetainChunk(0);
long old2 = s.store();
// the old version is still available
assertEquals("Hello", mOld.get("1"));
assertEquals("World", mOld.get("2"));
m.put("1", "Hi");
assertEquals("Welt", m.remove("2"));
s.store();
s.close();
s = openStore(fileName);
m = s.openMap("data", String.class, String.class);
assertEquals("Hi", m.get("1"));
assertEquals(null, m.get("2"));
mOld = m.openVersion(old2);
assertEquals("Hallo", mOld.get("1"));
assertEquals("Welt", mOld.get("2"));
s.close();
}
private void testIterateOverChanges() {
String fileName = getBaseDir() + "/testIterate.h3";
FileUtils.delete(fileName);
MVStore s = openStore(fileName);
s.setMaxPageSize(6);
MVMap<Integer, String> m = s.openMap("data", Integer.class, String.class);
for (int i = 0; i < 100; i++) {
m.put(i, "Hi");
}
s.incrementVersion();
s.store();
for (int i = 20; i < 40; i++) {
assertEquals("Hi", m.put(i, "Hello"));
}
long old = s.getCurrentVersion();
s.incrementVersion();
for (int i = 10; i < 15; i++) {
m.put(i, "Hallo");
}
m.put(50, "Hallo");
for (int i = 90; i < 93; i++) {
assertEquals("Hi", m.remove(i));
}
assertEquals(null, m.put(100, "Hallo"));
Iterator<Integer> it = m.changeIterator(old);
ArrayList<Integer> list = New.arrayList();
while (it.hasNext()) {
list.add(it.next());
}
assertEquals("[10, 11, 12, 13, 14, 50, 100, 90, 91, 92]", list.toString());
s.close();
}
private void testRollbackInMemory() {
String fileName = getBaseDir() + "/testRollback.h3";
FileUtils.delete(fileName);
MVStore s = openStore(fileName);
assertEquals(0, s.getCurrentVersion());
s.setMaxPageSize(5);
MVMap<String, String> m = s.openMap("data", String.class, String.class);
s.rollbackTo(0);
assertTrue(m.isClosed());
assertEquals(0, s.getCurrentVersion());
m = s.openMap("data", String.class, String.class);
MVMap<String, String> m0 = s.openMap("data0", String.class, String.class);
MVMap<String, String> m2 = s.openMap("data2", String.class, String.class);
m.put("1", "Hello");
for (int i = 0; i < 10; i++) {
m2.put("" + i, "Test");
}
long v1 = s.incrementVersion();
assertEquals(1, v1);
assertEquals(1, s.getCurrentVersion());
MVMap<String, String> m1 = s.openMap("data1", String.class, String.class);
assertEquals("Test", m2.get("1"));
m.put("1", "Hallo");
m0.put("1", "Hallo");
m1.put("1", "Hallo");
m2.clear();
assertEquals("Hallo", m.get("1"));
assertEquals("Hallo", m1.get("1"));
s.rollbackTo(v1);
assertEquals(1, s.getCurrentVersion());
for (int i = 0; i < 10; i++) {
assertEquals("Test", m2.get("" + i));
}
assertEquals("Hello", m.get("1"));
assertNull(m0.get("1"));
assertTrue(m1.isClosed());
assertFalse(m0.isReadOnly());
assertTrue(m1.isReadOnly());
s.close();
}
private void testExample() {
String fileName = getBaseDir() + "/testExample.h3";
FileUtils.delete(fileName);
// open the store (in-memory if fileName is null)
MVStore s = MVStore.open(fileName);
// create/get the map "data"
// the String.class, String.class will be optional later
MVMap<String, String> map = s.openMap("data", String.class, String.class);
// 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.incrementVersion();
// 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 incrementVersion)
MVMap<String, String> oldMap = map.openVersion(oldVersion);
// store the newest data to disk
s.store();
// print the old version (can be done
// concurrently with further modifications)
// this will print Hello World
// System.out.println(oldMap.get("1"));
// System.out.println(oldMap.get("2"));
oldMap.close();
// print the newest version ("Hi")
// System.out.println(map.get("1"));
// close the store - this doesn't write to disk
s.close();
}
private void testRollbackStored() {
String fileName = getBaseDir() + "/testRollback.h3";
FileUtils.delete(fileName);
MVMap<String, String> meta;
MVStore s = openStore(fileName);
assertEquals(-1, s.getRetainChunk());
s.setRetainChunk(0);
assertEquals(0, s.getRetainChunk());
assertEquals(0, s.getCurrentVersion());
assertFalse(s.hasUnsavedChanges());
MVMap<String, String> m = s.openMap("data", String.class, String.class);
assertTrue(s.hasUnsavedChanges());
MVMap<String, String> m0 = s.openMap("data0", String.class, String.class);
m.put("1", "Hello");
assertEquals(1, s.incrementVersion());
s.rollbackTo(1);
assertEquals("Hello", m.get("1"));
long v2 = s.store();
assertEquals(2, v2);
assertEquals(2, s.getCurrentVersion());
assertFalse(s.hasUnsavedChanges());
s.close();
s = openStore(fileName);
assertEquals(2, s.getCurrentVersion());
s.setRetainChunk(0);
meta = s.getMetaMap();
m = s.openMap("data", String.class, String.class);
m0 = s.openMap("data0", String.class, String.class);
MVMap<String, String> m1 = s.openMap("data1", String.class, String.class);
m.put("1", "Hallo");
m0.put("1", "Hallo");
m1.put("1", "Hallo");
assertEquals("Hallo", m.get("1"));
assertEquals("Hallo", m1.get("1"));
assertTrue(s.hasUnsavedChanges());
s.rollbackTo(v2);
assertFalse(s.hasUnsavedChanges());
assertNull(meta.get("map.data1"));
assertNull(m0.get("1"));
assertEquals("Hello", m.get("1"));
assertEquals(2, s.store());
s.close();
s = openStore(fileName);
s.setRetainChunk(0);
assertEquals(2, s.getCurrentVersion());
meta = s.getMetaMap();
assertTrue(meta.get("map.data") != null);
assertTrue(meta.get("map.data0") != null);
assertNull(meta.get("map.data1"));
m = s.openMap("data", String.class, String.class);
m0 = s.openMap("data0", String.class, String.class);
assertNull(m0.get("1"));
assertEquals("Hello", m.get("1"));
assertFalse(m0.isReadOnly());
m.put("1", "Hallo");
s.incrementVersion();
assertEquals(3, s.getCurrentVersion());
long v4 = s.store();
assertEquals(4, v4);
assertEquals(4, s.getCurrentVersion());
s.close();
s = openStore(fileName);
s.setRetainChunk(0);
m = s.openMap("data", String.class, String.class);
m.put("1", "Hello");
s.store();
s.close();
s = openStore(fileName);
s.setRetainChunk(0);
m = s.openMap("data", String.class, String.class);
assertEquals("Hello", m.get("1"));
s.rollbackTo(v4);
assertEquals("Hallo", m.get("1"));
s.close();
s = openStore(fileName);
s.setRetainChunk(0);
m = s.openMap("data", String.class, String.class);
assertEquals("Hallo", m.get("1"));
s.close();
}
