Example usage for java.util NoSuchElementException NoSuchElementException

Introduction

In this page you can find the example usage for java.util NoSuchElementException NoSuchElementException.

Prototype

public NoSuchElementException()

Source Link

Document

Constructs a NoSuchElementException with null as its error message string.

Usage

From source file:androidx.navigation.NavGraph.java

@NonNull
@Override//www.  j a  va2  s  .c om
public Iterator<NavDestination> iterator() {
    return new Iterator<NavDestination>() {
        private int mIndex = -1;
        private boolean mWentToNext = false;

        @Override
        public boolean hasNext() {
            return mIndex + 1 < mNodes.size();
        }

        @Override
        public NavDestination next() {
            if (!hasNext()) {
                throw new NoSuchElementException();
            }
            mWentToNext = true;
            return mNodes.valueAt(++mIndex);
        }

        @Override
        public void remove() {
            if (!mWentToNext) {
                throw new IllegalStateException("You must call next() before you can remove an element");
            }
            mNodes.valueAt(mIndex).setParent(null);
            mNodes.removeAt(mIndex);
            mIndex--;
            mWentToNext = false;
        }
    };
}

From source file:edu.cornell.med.icb.io.TSVReader.java

/**
 * Ensures we have a next field./*ww  w  .  ja v a  2 s  .  c o m*/
 */
private void ensureNextField() {
    if (currentTokens == null || currentTokenIndex >= currentTokens.length) {
        throw new NoSuchElementException();
    }
}

From source file:com.textocat.textokit.commons.cpe.JdbcCollectionReader.java

/**
 * {@inheritDoc}//from ww w. java2s .c o m
 */
@Override
public void getNext(CAS cas) throws IOException, CollectionException {
    if (!dbIterator.hasNext()) {
        throw new NoSuchElementException();
    }
    DbTuple tuple = dbIterator.next();
    consumedCount++;
    cas.setDocumentText(tuple.text);
    try {
        DocumentMetadata docMeta = new DocumentMetadata(cas.getJCas());
        docMeta.setSourceUri(tuple.url);
        docMeta.addToIndexes();
    } catch (CASException e) {
        throw new CollectionException(e);
    }
}

From source file:io.druid.data.input.impl.prefetch.PrefetchableTextFilesFirehoseFactory.java

@Override
public Firehose connect(StringInputRowParser firehoseParser, File temporaryDirectory) throws IOException {
    if (!cacheManager.isEnabled() && maxFetchCapacityBytes == 0) {
        return super.connect(firehoseParser, temporaryDirectory);
    }//from www .j  a va2  s. c o m

    if (objects == null) {
        objects = ImmutableList.copyOf(Preconditions.checkNotNull(initObjects(), "objects"));
    }

    Preconditions.checkState(temporaryDirectory.exists(), "temporaryDirectory[%s] does not exist",
            temporaryDirectory);
    Preconditions.checkState(temporaryDirectory.isDirectory(), "temporaryDirectory[%s] is not a directory",
            temporaryDirectory);

    LOG.info("Create a new firehose for [%d] objects", objects.size());

    // fetchExecutor is responsible for background data fetching
    final ExecutorService fetchExecutor = Execs.singleThreaded("firehose_fetch_%d");
    final Fetcher<T> fetcher = new Fetcher<>(cacheManager, objects, fetchExecutor, temporaryDirectory,
            maxFetchCapacityBytes, prefetchTriggerBytes, fetchTimeout, maxFetchRetry, this::openObjectStream);

    return new FileIteratingFirehose(new Iterator<LineIterator>() {
        @Override
        public boolean hasNext() {
            return fetcher.hasNext();
        }

        @Override
        public LineIterator next() {
            if (!hasNext()) {
                throw new NoSuchElementException();
            }

            final OpenedObject<T> openedObject = fetcher.next();
            final InputStream stream;
            try {
                stream = wrapObjectStream(openedObject.getObject(), openedObject.getObjectStream());
            } catch (IOException e) {
                throw new RuntimeException(e);
            }

            return new ResourceCloseableLineIterator(new InputStreamReader(stream, StandardCharsets.UTF_8),
                    openedObject.getResourceCloser());
        }
    }, firehoseParser, () -> {
        fetchExecutor.shutdownNow();
        try {
            Preconditions.checkState(fetchExecutor.awaitTermination(fetchTimeout, TimeUnit.MILLISECONDS));
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
            throw new ISE("Failed to shutdown fetch executor during close");
        }
    });
}

From source file:MiniMap.java

/**
 * @see java.util.Map#entrySet()//from   w ww.j a v  a2  s.  c  o m
 */
public Set<Entry<K, V>> entrySet() {
    return new AbstractSet<Entry<K, V>>() {
        @Override
        public Iterator<Entry<K, V>> iterator() {
            return new Iterator<Entry<K, V>>() {
                public boolean hasNext() {
                    return index < size;
                }

                public Entry<K, V> next() {
                    if (!hasNext()) {
                        throw new NoSuchElementException();
                    }

                    keyIndex = nextKey(nextIndex(keyIndex));

                    index++;

                    return new Map.Entry<K, V>() {
                        public K getKey() {
                            return keys[keyIndex];
                        }

                        public V getValue() {
                            return values[keyIndex];
                        }

                        public V setValue(final V value) {
                            final V oldValue = values[keyIndex];

                            values[keyIndex] = value;

                            return oldValue;
                        }
                    };
                }

                public void remove() {
                    keys[keyIndex] = null;
                    values[keyIndex] = null;
                }

                int keyIndex = -1;

                int index = 0;
            };
        }

        @Override
        public int size() {
            return size;
        }
    };
}

From source file:io.druid.data.input.impl.prefetch.Fetcher.java

@Override
public OpenedObject<T> next() {
    if (!hasNext()) {
        throw new NoSuchElementException();
    }//from   w  w  w .  ja  v a  2  s.  c  om

    // If fetch() fails, hasNext() always returns true and next() is always called. The below method checks that
    // fetch() threw an exception and propagates it if exists.
    checkFetchException(false);

    try {
        final OpenedObject<T> openedObject = prefetchEnabled ? openObjectFromLocal() : openObjectFromRemote();
        numRemainingObjects--;
        return openedObject;
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}

From source file:Utils.java

public E next() {
    if (next == WAITING && !hasNext()) {
        throw new NoSuchElementException();
    }//from   w  ww.ja  va 2 s .co m
    assert next != WAITING;
    @SuppressWarnings("unchecked")
    // type-checking is done by accept()
    E x = (E) next;
    next = WAITING;
    return x;
}

From source file:demo.util.model.BoundedFifoBuffer.java

/**
 * Returns an iterator over this buffer's elements.
 *
 * @return an iterator over this buffer's elements
 *//*from  w ww  . j av a2  s .co  m*/
@Override
public Iterator<T> iterator() {
    return new Iterator<T>() {

        private int index = start;
        private int lastReturnedIndex = -1;
        private boolean isFirst = full;

        @Override
        public boolean hasNext() {
            return isFirst || (index != end);

        }

        @SuppressWarnings("unchecked")
        @Override
        public T next() {
            if (!hasNext()) {
                throw new NoSuchElementException();
            }
            isFirst = false;
            lastReturnedIndex = index;
            index = increment(index);
            return (T) elements[lastReturnedIndex];
        }

        @Override
        public void remove() {
            if (lastReturnedIndex == -1) {
                throw new IllegalStateException();
            }

            // First element can be removed quickly
            if (lastReturnedIndex == start) {
                BoundedFifoBuffer.this.remove();
                lastReturnedIndex = -1;
                return;
            }

            int pos = lastReturnedIndex + 1;
            if (start < lastReturnedIndex && pos < end) {
                // shift in one part
                System.arraycopy(elements, pos, elements, lastReturnedIndex, end - pos);
            } else {
                // Other elements require us to shift the subsequent elements
                while (pos != end) {
                    if (pos >= maxElements) {
                        elements[pos - 1] = elements[0];
                        pos = 0;
                    } else {
                        elements[decrement(pos)] = elements[pos];
                        pos = increment(pos);
                    }
                }
            }

            lastReturnedIndex = -1;
            end = decrement(end);
            elements[end] = null;
            full = false;
            index = decrement(index);
        }

    };
}

From source file:com.predic8.membrane.core.interceptor.authentication.session.LDAPUserDataProvider.java

private String searchUser(String login, HashMap<String, String> userAttrs, DirContext ctx)
        throws NamingException {
    String uid;/*from  w w  w  .  j a  v  a2  s  . c  o  m*/
    SearchControls ctls = new SearchControls();
    ctls.setReturningObjFlag(true);
    ctls.setSearchScope(searchScope);
    String search = searchPattern.replaceAll(Pattern.quote("%LOGIN%"), escapeLDAPSearchFilter(login));
    log.debug("Searching LDAP for " + search);
    NamingEnumeration<SearchResult> answer = ctx.search(base, search, ctls);
    try {
        if (!answer.hasMore())
            throw new NoSuchElementException();
        log.debug("LDAP returned >=1 record.");
        SearchResult result = answer.next();
        uid = result.getName();
        for (Map.Entry<String, String> e : attributeMap.entrySet()) {
            log.debug("found LDAP attribute: " + e.getKey());
            Attribute a = result.getAttributes().get(e.getKey());
            if (a != null)
                userAttrs.put(e.getValue(), a.get().toString());
        }
    } finally {
        answer.close();
    }
    return uid;
}