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 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 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();
}