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:com.buaa.cfs.fs.AbstractFileSystem.java

/**
 * The specification of this method matches that of {@link FileContext#listStatus(Path)} except that Path f must be
 * for this file system.//from   w  w  w  .  j  a  va2s.  co  m
 */
public RemoteIterator<FileStatus> listStatusIterator(final Path f)
        throws AccessControlException, FileNotFoundException, UnresolvedLinkException, IOException {
    return new RemoteIterator<FileStatus>() {
        private int i = 0;
        private FileStatus[] statusList = listStatus(f);

        @Override
        public boolean hasNext() {
            return i < statusList.length;
        }

        @Override
        public FileStatus next() {
            if (!hasNext()) {
                throw new NoSuchElementException();
            }
            return statusList[i++];
        }
    };
}

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From source file:com.cloudbees.plugins.credentials.CredentialsProvider.java

/**
 * Returns a lazy {@link Iterable} of all the {@link CredentialsStore} instances contributing credentials to the
 * supplied object.//from   w ww  .j  a va2 s  .  co m
 *
 * @param context the {@link Item} or {@link ItemGroup} or {@link User} to get the {@link CredentialsStore}s of.
 * @return a lazy {@link Iterable} of all {@link CredentialsStore} instances.
 * @since 1.8
 */
public static Iterable<CredentialsStore> lookupStores(final ModelObject context) {
    final ExtensionList<CredentialsProvider> providers = all();
    return new Iterable<CredentialsStore>() {
        public Iterator<CredentialsStore> iterator() {
            return new Iterator<CredentialsStore>() {
                private ModelObject current = context;
                private Iterator<CredentialsProvider> iterator = providers.iterator();
                private CredentialsStore next;

                public boolean hasNext() {
                    if (next != null) {
                        return true;
                    }
                    while (current != null) {
                        while (iterator.hasNext()) {
                            CredentialsProvider p = iterator.next();
                            if (!p.isEnabled(context)) {
                                continue;
                            }
                            next = p.getStore(current);
                            if (next != null) {
                                return true;
                            }
                        }
                        // now walk up the model object tree
                        // TODO make this an extension point perhaps ContextResolver could help
                        if (current instanceof Item) {
                            current = ((Item) current).getParent();
                            iterator = providers.iterator();
                        } else if (current instanceof User) {
                            Jenkins jenkins = Jenkins.getActiveInstance();
                            Authentication a;
                            if (jenkins.hasPermission(USE_ITEM) && current == User.current()) {
                                // this is the fast path for the 99% of cases
                                a = Jenkins.getAuthentication();
                            } else {
                                try {
                                    a = ((User) current).impersonate();
                                } catch (UsernameNotFoundException e) {
                                    a = null;
                                }
                            }
                            if (current == User.current() && jenkins.getACL().hasPermission(a, USE_ITEM)) {
                                current = jenkins;
                                iterator = providers.iterator();
                            } else {
                                current = null;
                            }
                        } else if (current instanceof Jenkins) {
                            // escape
                            current = null;
                        } else if (current instanceof ComputerSet) {
                            current = Jenkins.getActiveInstance();
                            iterator = providers.iterator();
                        } else if (current instanceof Computer) {
                            current = Jenkins.getActiveInstance();
                            iterator = providers.iterator();
                        } else if (current instanceof Node) {
                            current = Jenkins.getActiveInstance();
                            iterator = providers.iterator();
                        } else {
                            // fall back to Jenkins as the ultimate parent of everything else
                            current = Jenkins.getActiveInstance();
                            iterator = providers.iterator();
                        }
                    }
                    return false;
                }

                public CredentialsStore next() {
                    if (!hasNext()) {
                        throw new NoSuchElementException();
                    }
                    try {
                        return next;
                    } finally {
                        next = null;
                    }
                }

                public void remove() {
                    throw new UnsupportedOperationException();
                }
            };
        }
    };
}

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From source file:jp.terasoluna.fw.file.dao.standard.AbstractFileLineIterator.java

/**
 * ???<br>//from w  w  w . jav  a2s  .c om
 * ?????????? ?????????<br>
 * ????????????????<br>
 * ??????????<br>
 * ??????????<br>
 * @throws FileException ???????
 */
private void buildTrailerQueue() {
    if (0 < trailerLineCount) {
        // ??
        trailerQueue = new ArrayBlockingQueue<String>(trailerLineCount);

        // ???
        for (int i = 0; i < trailerLineCount; i++) {
            if (!hasNext()) {
                throw new FileException("The data which can be acquired doesn't exist.",
                        new NoSuchElementException(), fileName);
            }
            try {
                trailerQueue.add(lineReader.readLine());
            } catch (FileException e) {
                throw new FileException("Error occurred by reading processing of a File.", e, fileName);
            }
        }
    }
}

---

From source file:jp.terasoluna.fw.file.dao.standard.AbstractFileLineIterator.java

/**
 * ??????<br>/*w w w  .  jav  a2  s . c om*/
 * @param skipLines ???
 */
@Override
public void skip(int skipLines) {
    for (int i = 0; i < skipLines; i++) {
        if (!hasNext()) {
            throw new FileLineException("The data which can be acquired doesn't exist.",
                    new NoSuchElementException(), fileName, currentLineCount + 1);
        }
        readLine();
        currentLineCount++;
    }
}

---

From source file:com.aliyun.odps.local.common.WareHouse.java

public Iterator<Object[]> readResourceTable(String project, String resource, final char inputColumnSeperator)
        throws IOException, OdpsException {
    if (!existsResource(project, resource)) {
        DownloadUtils.downloadResource(WareHouse.getInstance().getOdps(), getOdps().getDefaultProject(),
                resource, Constants.DEFAULT_DOWNLOAD_RECORD, inputColumnSeperator);
    }//from   w ww  .jav a 2s . c  om

    File tableResourceDir = getReourceFile(project, resource);
    if (!tableResourceDir.isDirectory()) {
        throw new OdpsException("Resource " + project + "." + resource
                + " is not a valid file Resource, because it is not a direcotry");
    }

    // LOG.info("Reading resource table from " +
    // tableResourceDir.getAbsolutePath());
    TableInfo tableInfo = getReferencedTable(project, resource);
    PartitionSpec partitionSpec = PartitionUtils.convert(tableInfo.getPartSpec());

    final List<File> datafiles = getDataFiles(project, tableInfo.getTableName(), partitionSpec,
            inputColumnSeperator);

    final Column[] schema = SchemaUtils.readSchema(getTableDir(project, tableInfo.getTableName())).getCols();

    return new Iterator<Object[]>() {
        CsvReader reader;
        Object[] current;
        boolean fetched;

        @Override
        public boolean hasNext() {
            if (fetched) {
                return current != null;
            }
            // Fetch new one
            try {
                fetch();
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
            return current != null;

        }

        private void fetch() throws IOException {

            // first time
            if (reader == null) {
                if (datafiles.isEmpty()) {
                    current = null;
                    fetched = true;
                    return;
                }

                File f = datafiles.remove(0);
                reader = DownloadUtils.newCsvReader(f.getAbsolutePath(), inputColumnSeperator, encoding);
                reader.setSafetySwitch(false);
                current = read();
                fetched = true;
                return;
            }

            current = read();

            if (current == null && !datafiles.isEmpty()) {
                File f = datafiles.remove(0);
                reader = DownloadUtils.newCsvReader(f.getAbsolutePath(), inputColumnSeperator, encoding);
                reader.setSafetySwitch(false);

                current = read();

                fetched = true;
                return;
            }

            fetched = true;
        }

        @Override
        public Object[] next() {
            if (!hasNext()) {
                throw new NoSuchElementException();
            }
            fetched = false;
            return current;
        }

        @Override
        public void remove() {
            throw new UnsupportedOperationException();
        }

        private Object[] read() throws IOException {
            Object[] result;
            if (!reader.readRecord()) {
                return null;
            }
            String[] vals = reader.getValues();
            if (vals == null || vals.length == 0) {
                result = null;
            } else {
                result = new Object[vals.length];
                for (int i = 0; i < vals.length; i++) {
                    result[i] = LocalRunUtils.fromString(schema[i].getType(), vals[i], "\\N");
                }
            }
            return result;
        }

    };
}

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From source file:jef.tools.XMLUtils.java

/**
 * n(?)/*from  ww  w  .ja v  a 2 s. c  o  m*/
 * 
 * @param parent
 *            
 * @param elementName
 *            ??
 * @param index
 *            ??
 * @return DOM
 */
public static Element nthElement(Element parent, String elementName, int index) {
    NodeList nds = parent.getElementsByTagName(elementName);
    if (nds.getLength() < index)
        throw new NoSuchElementException();
    Element node = (Element) nds.item(index - 1);
    return node;
}

---

From source file:io.minio.MinioClient.java

/**
 * Lists object information as {@code Iterable<Result><Item>>} in given bucket, prefix and recursive flag.
 *
 * </p><b>Example:</b><br>
 * <pre>{@code Iterable<Result<Item>> myObjects = minioClient.listObjects("my-bucketname");
 * for (Result<Item> result : myObjects) {
 *   Item item = result.get();/*from   ww  w .  java 2s.co m*/
 *   System.out.println(item.lastModified() + ", " + item.size() + ", " + item.objectName());
 * } }</pre>
 *
 * @param bucketName Bucket name.
 * @param prefix     Prefix string.  List objects whose name starts with `prefix`.
 * @param recursive when false, emulates a directory structure where each listing returned is either a full object
 *                  or part of the object's key up to the first '/'. All objects wit the same prefix up to the first
 *                  '/' will be merged into one entry.
 *
 * @return an iterator of Result Items.
 *
 * @see #listObjects(String bucketName)
 * @see #listObjects(String bucketName, String prefix)
 */
public Iterable<Result<Item>> listObjects(final String bucketName, final String prefix,
        final boolean recursive) {
    return new Iterable<Result<Item>>() {
        @Override
        public Iterator<Result<Item>> iterator() {
            return new Iterator<Result<Item>>() {
                private String lastObjectName;
                private ListBucketResult listBucketResult;
                private Result<Item> error;
                private Iterator<Item> itemIterator;
                private Iterator<Prefix> prefixIterator;
                private boolean completed = false;

                private synchronized void populate() {
                    String delimiter = "/";
                    if (recursive) {
                        delimiter = null;
                    }

                    String marker = null;
                    if (this.listBucketResult != null) {
                        if (delimiter != null) {
                            marker = listBucketResult.nextMarker();
                        } else {
                            marker = this.lastObjectName;
                        }
                    }

                    this.listBucketResult = null;
                    this.itemIterator = null;
                    this.prefixIterator = null;

                    try {
                        this.listBucketResult = listObjects(bucketName, marker, prefix, delimiter, null);
                    } catch (InvalidBucketNameException | NoSuchAlgorithmException | InsufficientDataException
                            | IOException | InvalidKeyException | NoResponseException | XmlPullParserException
                            | ErrorResponseException | InternalException e) {
                        this.error = new Result<>(null, e);
                    } finally {
                        if (this.listBucketResult != null) {
                            this.itemIterator = this.listBucketResult.contents().iterator();
                            this.prefixIterator = this.listBucketResult.commonPrefixes().iterator();
                        } else {
                            this.itemIterator = new LinkedList<Item>().iterator();
                            this.prefixIterator = new LinkedList<Prefix>().iterator();
                        }
                    }
                }

                @Override
                public boolean hasNext() {
                    if (this.completed) {
                        return false;
                    }

                    if (this.error == null && this.itemIterator == null && this.prefixIterator == null) {
                        populate();
                    }

                    if (this.error == null && !this.itemIterator.hasNext() && !this.prefixIterator.hasNext()
                            && this.listBucketResult.isTruncated()) {
                        populate();
                    }

                    if (this.error != null) {
                        return true;
                    }

                    if (this.itemIterator.hasNext()) {
                        return true;
                    }

                    if (this.prefixIterator.hasNext()) {
                        return true;
                    }

                    this.completed = true;
                    return false;
                }

                @Override
                public Result<Item> next() {
                    if (this.completed) {
                        throw new NoSuchElementException();
                    }

                    if (this.error == null && this.itemIterator == null && this.prefixIterator == null) {
                        populate();
                    }

                    if (this.error == null && !this.itemIterator.hasNext() && !this.prefixIterator.hasNext()
                            && this.listBucketResult.isTruncated()) {
                        populate();
                    }

                    if (this.error != null) {
                        this.completed = true;
                        return this.error;
                    }

                    if (this.itemIterator.hasNext()) {
                        Item item = this.itemIterator.next();
                        this.lastObjectName = item.objectName();
                        return new Result<>(item, null);
                    }

                    if (this.prefixIterator.hasNext()) {
                        Prefix prefix = this.prefixIterator.next();
                        Item item;
                        try {
                            item = new Item(prefix.prefix(), true);
                        } catch (XmlPullParserException e) {
                            // special case: ignore the error as we can't propagate the exception in next()
                            item = null;
                        }

                        return new Result<>(item, null);
                    }

                    this.completed = true;
                    throw new NoSuchElementException();
                }

                @Override
                public void remove() {
                    throw new UnsupportedOperationException();
                }
            };
        }
    };
}

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From source file:de.mrapp.android.preference.activity.PreferenceActivity.java

/**
 * Selects a specific preference header.
 *
 * @param preferenceHeader/*  w ww . ja v  a2 s  .c om*/
 *         The preference header, which should be selected, as an instance of the class {@link
 *         PreferenceHeader}. The preference header may not be null. If the preference header
 *         does not belong to the activity, a {@link NoSuchElementException} will be thrown
 * @param parameters
 *         The parameters, which should be passed to the preference header's fragment, as an
 *         instance of the class {@link Bundle} or null, if the preference header's extras
 *         should be used instead
 */
public final void selectPreferenceHeader(@NonNull final PreferenceHeader preferenceHeader,
        @Nullable final Bundle parameters) {
    ensureNotNull(preferenceHeader, "The preference header may not be null");
    int position = getListAdapter().indexOf(preferenceHeader);

    if (position == -1) {
        throw new NoSuchElementException();
    }

    selectPreferenceHeader(position, parameters);
}

---

From source file:NavigableMap.java

/**
 * Returns the first (lowest) key currently in this map.
 * //from w ww .  j a va2  s  .  c o m
 * @return the first (lowest) key currently in this map.
 * @throws NoSuchElementException
 *           Map is empty.
 */
public K firstKey() {
    Node<K, V> n = findFirst();
    if (n == null)
        throw new NoSuchElementException();
    return n.key;
}

---

From source file:NavigableMap.java

/**
 * Returns the last (highest) key currently in this map.
 * //from   w ww.j  a v a2s . c o m
 * @return the last (highest) key currently in this map.
 * @throws NoSuchElementException
 *           Map is empty.
 */
public K lastKey() {
    Node<K, V> n = findLast();
    if (n == null)
        throw new NoSuchElementException();
    return n.key;
}

---

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