@Test
public void delayedUpdate() throws Exception {
View ix = openIndex("foo");
byte[] key = "hello".getBytes();
byte[] value1 = "world".getBytes();
ix.store(null, key, value1);
int i = 0;
Updater u = start(ix, key, ("world-" + (i++)).getBytes());
fastAssertArrayEquals(u.mValue, ix.load(null, key));
u = start(ix, key, ("world-" + (i++)).getBytes());
Transaction txn2 = mDb.newTransaction();
fastAssertArrayEquals(u.mValue, ix.load(txn2, key));
txn2.reset();
u = start(ix, key, ("world-" + (i++)).getBytes());
txn2.lockMode(LockMode.UPGRADABLE_READ);
fastAssertArrayEquals(u.mValue, ix.load(txn2, key));
txn2.reset();
u = start(ix, key, ("world-" + (i++)).getBytes());
txn2.lockMode(LockMode.REPEATABLE_READ);
fastAssertArrayEquals(u.mValue, ix.load(txn2, key));
txn2.reset();
u = start(ix, key, ("world-" + (i++)).getBytes());
txn2.lockMode(LockMode.READ_COMMITTED);
fastAssertArrayEquals(u.mValue, ix.load(txn2, key));
txn2.reset();
}
@Override
public final void store(byte[] value) throws IOException {
byte[] key = mKey;
if (key == null) {
throw new IllegalStateException("Cursor position is undefined");
}
try {
Transaction txn = mTxn;
if (txn == null) {
txn = mTree.mDatabase.newAlwaysRedoTransaction();
try {
if (txn.lockMode() != LockMode.UNSAFE) {
txn.lockExclusive(mTree.mId, key, keyHash());
}
store(txn, leafExclusive(), value, false);
txn.commit();
} catch (Throwable e) {
txn.reset();
throw e;
}
} else {
if (txn.lockMode() != LockMode.UNSAFE) {
txn.lockExclusive(mTree.mId, key, keyHash());
}
store(txn, leafExclusive(), value, false);
}
} catch (Throwable e) {
throw handleException(e, false);
}
}
@Test
public void timedOutUpdate() throws Exception {
View ix = openIndex("foo");
byte[] key = "hello".getBytes();
byte[] value1 = "world".getBytes();
byte[] value2 = "world!!!".getBytes();
ix.store(null, key, value1);
Transaction txn = mDb.newTransaction();
ix.store(txn, key, value2);
fastAssertArrayEquals(value2, ix.load(Transaction.BOGUS, key));
try {
ix.load(null, key);
fail();
} catch (LockTimeoutException e) {
}
Transaction txn2 = mDb.newTransaction();
try {
ix.load(txn2, key);
fail();
} catch (LockTimeoutException e) {
}
txn2.lockMode(LockMode.UPGRADABLE_READ);
try {
ix.load(txn2, key);
fail();
} catch (LockTimeoutException e) {
}
txn2.lockMode(LockMode.REPEATABLE_READ);
try {
ix.load(txn2, key);
fail();
} catch (LockTimeoutException e) {
}
txn2.lockMode(LockMode.READ_COMMITTED);
try {
ix.load(txn2, key);
fail();
} catch (LockTimeoutException e) {
}
txn2.lockMode(LockMode.READ_UNCOMMITTED);
fastAssertArrayEquals(value2, ix.load(txn2, key));
txn2.lockMode(LockMode.UNSAFE);
fastAssertArrayEquals(value2, ix.load(txn2, key));
txn.commit();
fastAssertArrayEquals(value2, ix.load(null, key));
}
private void doCommit(Transaction txn, byte[] key, byte[] value) throws IOException {
if (txn.lockMode() == LockMode.UNSAFE) {
store(txn, leafExclusive(), value, false);
txn.commit();
} else {
txn.lockExclusive(mTree.mId, key, keyHash());
txn.storeCommit(this, value);
}
}
private void delayedDelete(boolean noGhost) throws Exception {
View ix = openIndex("foo");
byte[] key = "hello".getBytes();
byte[] value1 = "world".getBytes();
ix.store(null, key, value1);
Updater u = start(ix, key, null, noGhost);
assertEquals(null, ix.load(null, key));
ix.store(null, key, value1);
u = start(ix, key, null, noGhost);
Transaction txn2 = mDb.newTransaction();
assertEquals(null, ix.load(txn2, key));
txn2.reset();
ix.store(null, key, value1);
u = start(ix, key, null, noGhost);
txn2.lockMode(LockMode.UPGRADABLE_READ);
assertEquals(null, ix.load(txn2, key));
txn2.reset();
ix.store(null, key, value1);
u = start(ix, key, null, noGhost);
txn2.lockMode(LockMode.REPEATABLE_READ);
assertEquals(null, ix.load(txn2, key));
txn2.reset();
ix.store(null, key, value1);
u = start(ix, key, null, noGhost);
txn2.lockMode(LockMode.READ_COMMITTED);
assertEquals(null, ix.load(txn2, key));
txn2.reset();
}