How to use

txStartEx

method

in

org.apache.ignite.internal.processors.cache.IgniteInternalCache

/**
 * Start transaction on meta cache.
 *
 * @return Transaction.
 */
private GridNearTxLocal startTx() {
  return metaCache.txStartEx(TransactionConcurrency.PESSIMISTIC, TransactionIsolation.REPEATABLE_READ);
}

/** {@inheritDoc} */
@Override public GridNearTxLocal txStartEx(
  TransactionConcurrency concurrency,
  TransactionIsolation isolation
) {
  return delegate.get().txStartEx(concurrency, isolation);
}

/** {@inheritDoc} */
@Override public GridNearTxLocal txStartEx(TransactionConcurrency concurrency, TransactionIsolation isolation) {
  CacheOperationContext prev = gate.enter(opCtx);
  try {
    return delegate.txStartEx(concurrency, isolation);
  }
  finally {
    gate.leave(prev);
  }
}

/**
 * @param ctx Context.
 * @param prj Projection.
 * @param concurrency Concurrency.
 * @param isolation Isolation.
 * @return New transaction.
 */
public static GridNearTxLocal txStartInternal(GridCacheContext ctx, IgniteInternalCache prj,
  TransactionConcurrency concurrency, TransactionIsolation isolation) {
  assert ctx != null;
  assert prj != null;
  ctx.tm().resetContext();
  return prj.txStartEx(concurrency, isolation);
}

/**
 * Execute closure inside cache transaction.
 *
 * @param cache Cache.
 * @param concurrency Concurrency.
 * @param isolation Isolation.
 * @param clo Closure.
 * @throws IgniteCheckedException If failed.
 */
public static <K, V> void inTx(IgniteInternalCache<K, V> cache, TransactionConcurrency concurrency,
  TransactionIsolation isolation, IgniteInClosureX<IgniteInternalCache<K ,V>> clo) throws IgniteCheckedException {
  try (GridNearTxLocal tx = cache.txStartEx(concurrency, isolation)) {
    clo.applyx(cache);
    tx.commit();
  }
}

  nodes = null;
try (GridNearTxLocal tx = cache.txStartEx(PESSIMISTIC, REPEATABLE_READ)) {
  GridServiceAssignmentsKey key = new GridServiceAssignmentsKey(cfg.getName());

while(true) {
  try {
    try (GridNearTxLocal tx = cache.txStartEx(PESSIMISTIC, REPEATABLE_READ)) {
      AtomicDataStructureValue val = cache.get(key);

/**
 * @throws Exception If failed.
 */
@Test
public void testGridNearTxLocalDuplicateAsyncCommit() throws Exception {
  IgniteKernal ignite = (IgniteKernal)grid(0);
  IgniteInternalCache<Object, Object> utilityCache = ignite.context().cache().utilityCache();
  try (GridNearTxLocal itx = MvccFeatureChecker.forcedMvcc() ?
    utilityCache.txStartEx(PESSIMISTIC, REPEATABLE_READ) :
    utilityCache.txStartEx(OPTIMISTIC, SERIALIZABLE)) {
    utilityCache.put("1", "1");
    itx.commitNearTxLocalAsync();
    itx.commitNearTxLocalAsync().get();
  }
}

  colocatedKey.evictExclude(), colocatedKey.blockId());
try (GridNearTxLocal tx = dataCachePrj.txStartEx(PESSIMISTIC, REPEATABLE_READ)) {

@Override public T applyx() throws IgniteCheckedException {
  cache.context().gate().enter();
  try (GridNearTxLocal tx = cache.txStartEx(PESSIMISTIC, REPEATABLE_READ)) {
    AtomicDataStructureValue val = cache.get(key);

try (GridNearTxLocal tx = dataCachePrj.txStartEx(PESSIMISTIC, REPEATABLE_READ)) {
  Map<IgfsBlockKey, byte[]> vals = dataCachePrj.getAll(F.asList(colocatedKey, key));

/**
 * @throws Exception If failed.
 */
@Test
public void testSystemTxInsideUserTx() throws Exception {
  Assume.assumeFalse("https://issues.apache.org/jira/browse/IGNITE-10473", MvccFeatureChecker.forcedMvcc());
  IgniteKernal ignite = (IgniteKernal)grid(0);
  IgniteCache<Object, Object> jcache = ignite.cache(DEFAULT_CACHE_NAME);
  try (Transaction tx = ignite.transactions().txStart(PESSIMISTIC, REPEATABLE_READ)) {
    jcache.get("1");
    jcache.put("1", "11");
    IgniteInternalCache<Object, Object> utilityCache = ignite.context().cache().utilityCache();
    utilityCache.getAndPutIfAbsent("2", "2");
    try (GridNearTxLocal itx = utilityCache.txStartEx(PESSIMISTIC, REPEATABLE_READ)) {
      assertEquals(null, utilityCache.get("1"));
      assertEquals("2", utilityCache.get("2"));
      assertEquals(null, utilityCache.get("3"));
      utilityCache.getAndPut("3", "3");
      itx.commit();
    }
    jcache.put("2", "22");
    tx.commit();
  }
  checkTransactionsCommitted();
  checkEntries(DEFAULT_CACHE_NAME, "1", "11", "2", "22", "3", null);
  checkEntries(CU.UTILITY_CACHE_NAME, "1", null, "2", "2", "3", "3");
}

/**
 * Start transaction on meta cache.
 *
 * @return Transaction.
 */
private GridNearTxLocal startTx() {
  return metaCache.txStartEx(TransactionConcurrency.PESSIMISTIC, TransactionIsolation.REPEATABLE_READ);
}

/** {@inheritDoc} */
@Override public GridNearTxLocal txStartEx(TransactionConcurrency concurrency, TransactionIsolation isolation) {
  CacheOperationContext prev = gate.enter(opCtx);
  try {
    return delegate.txStartEx(concurrency, isolation);
  }
  finally {
    gate.leave(prev);
  }
}

/**
 * @param ctx Context.
 * @param prj Projection.
 * @param concurrency Concurrency.
 * @param isolation Isolation.
 * @return New transaction.
 */
public static GridNearTxLocal txStartInternal(GridCacheContext ctx, IgniteInternalCache prj,
  TransactionConcurrency concurrency, TransactionIsolation isolation) {
  assert ctx != null;
  assert prj != null;
  ctx.tm().resetContext();
  return prj.txStartEx(concurrency, isolation);
}

/**
 * Execute closure inside cache transaction.
 *
 * @param cache Cache.
 * @param concurrency Concurrency.
 * @param isolation Isolation.
 * @param clo Closure.
 * @throws IgniteCheckedException If failed.
 */
public static <K, V> void inTx(IgniteInternalCache<K, V> cache, TransactionConcurrency concurrency,
  TransactionIsolation isolation, IgniteInClosureX<IgniteInternalCache<K ,V>> clo) throws IgniteCheckedException {
  try (GridNearTxLocal tx = cache.txStartEx(concurrency, isolation)) {
    clo.applyx(cache);
    tx.commit();
  }
}

while(true) {
  try {
    try (GridNearTxLocal tx = cache.txStartEx(PESSIMISTIC, REPEATABLE_READ)) {
      AtomicDataStructureValue val = cache.get(key);

  colocatedKey.evictExclude(), colocatedKey.blockId());
try (GridNearTxLocal tx = dataCachePrj.txStartEx(PESSIMISTIC, REPEATABLE_READ)) {

@Override public T applyx() throws IgniteCheckedException {
  cache.context().gate().enter();
  try (GridNearTxLocal tx = cache.txStartEx(PESSIMISTIC, REPEATABLE_READ)) {
    AtomicDataStructureValue val = cache.get(key);

try (GridNearTxLocal tx = dataCachePrj.txStartEx(PESSIMISTIC, REPEATABLE_READ)) {
  Map<IgfsBlockKey, byte[]> vals = dataCachePrj.getAll(F.asList(colocatedKey, key));