private void testFastDelete() {
String fileName = getBaseDir() + "/testFastDelete.h3";
FileUtils.delete(fileName);
MVStore s;
MVMap<Integer, String> m;
s = openStore(fileName);
s.setMaxPageSize(100);
m = s.openMap("data", Integer.class, String.class);
for (int i = 0; i < 1000; i++) {
m.put(i, "Hello World");
assertEquals(i + 1, m.size());
}
assertEquals(1000, m.size());
s.store();
assertEquals(3, s.getWriteCount());
s.close();
s = openStore(fileName);
m = s.openMap("data", Integer.class, String.class);
m.clear();
assertEquals(0, m.size());
s.store();
// ensure only nodes are read, but not leaves
assertEquals(4, s.getReadCount());
assertEquals(2, s.getWriteCount());
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 testTruncateFile() {
String fileName = getBaseDir() + "/testTruncate.h3";
FileUtils.delete(fileName);
MVStore s;
MVMap<Integer, String> m;
s = openStore(fileName);
m = s.openMap("data", Integer.class, String.class);
for (int i = 0; i < 1000; i++) {
m.put(i, "Hello World");
}
s.store();
s.close();
long len = FileUtils.size(fileName);
s = openStore(fileName);
m = s.openMap("data", Integer.class, String.class);
m.clear();
s.store();
s.compact(100);
s.close();
long len2 = FileUtils.size(fileName);
assertTrue(len2 < len);
}