How to use

putIfAbsent

method

in

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

  @Override public Boolean call() throws Exception {
    return cache.putIfAbsent(key, true);
  }
});

/** {@inheritDoc} */
@Override public boolean putIfAbsent(K key, V val) {
  IgniteInternalCache<K, V> delegate = getDelegateSafe();
  try {
    if (isAsync()) {
      setFuture(delegate.putIfAbsentAsync(key, val));
      return false;
    }
    else
      return delegate.putIfAbsent(key, val);
  }
  catch (IgniteCheckedException | IgniteException e) {
    throw cacheException(e);
  }
}

/** {@inheritDoc} */
@Override public boolean putIfAbsent(K key, V val) {
  try {
    if (isAsync()) {
      setFuture(delegate.putIfAbsentAsync(key, val));
      return false;
    }
    else
      return delegate.putIfAbsent(key, val);
  }
  catch (IgniteCheckedException | IgniteException e) {
    throw cacheException(e);
  }
}

/** {@inheritDoc} */
@Override public boolean putIfAbsent(Object key, Object val) throws IgniteCheckedException {
  return delegate.get().putIfAbsent(keyTransformer.transform(key), val);
}

/** {@inheritDoc} */
@Override public boolean putIfAbsent(K key, V val) throws IgniteCheckedException {
  CacheOperationContext prev = gate.enter(opCtx);
  try {
    return delegate.putIfAbsent(key, val);
  }
  finally {
    gate.leave(prev);
  }
}

/**
 * Put new entry to meta cache immediately linking it to parent.
 *
 * @param info Info to put.
 * @param parentId Parent ID.
 * @param name Name in parent.
 * @throws IgniteCheckedException If failed.
 */
private void createNewEntry(IgfsEntryInfo info, IgniteUuid parentId, String name) throws IgniteCheckedException {
  validTxState(true);
  if (!id2InfoPrj.putIfAbsent(info.id(), info))
    throw fsException("Failed to create new metadata entry due to ID conflict: " + info.id());
  if (parentId != null)
    id2InfoPrj.invoke(parentId, new IgfsMetaDirectoryListingAddProcessor(name, new IgfsListingEntry(info)));
}

  @Override public Boolean call() throws Exception {
    return cache.putIfAbsent(key, true);
  }
});

/** {@inheritDoc} */
@Override public boolean putIfAbsent(K key, V val) throws IgniteCheckedException {
  CacheOperationContext prev = gate.enter(opCtx);
  try {
    return delegate.putIfAbsent(key, val);
  }
  finally {
    gate.leave(prev);
  }
}

/**
 * Put new entry to meta cache immediately linking it to parent.
 *
 * @param info Info to put.
 * @param parentId Parent ID.
 * @param name Name in parent.
 * @throws IgniteCheckedException If failed.
 */
private void createNewEntry(IgfsEntryInfo info, IgniteUuid parentId, String name) throws IgniteCheckedException {
  validTxState(true);
  if (!id2InfoPrj.putIfAbsent(info.id(), info))
    throw fsException("Failed to create new metadata entry due to ID conflict: " + info.id());
  if (parentId != null)
    id2InfoPrj.invoke(parentId, new IgfsMetaDirectoryListingAddProcessor(name, new IgfsListingEntry(info)));
}