Example usage for java.lang Iterable iterator

Introduction

In this page you can find the example usage for java.lang Iterable iterator.

Prototype

Iterator<T> iterator();

Source Link

Document

Returns an iterator over elements of type T .

Usage

From source file:org.dasein.cloud.openstack.nova.os.NovaOpenStack.java

public synchronized @Nonnull AuthenticationContext getAuthenticationContext()
        throws CloudException, InternalException {
    APITrace.begin(this, "Cloud.getAuthenticationContext");
    try {/*from  ww  w . j  av  a2 s.  c  om*/
        Cache<AuthenticationContext> cache = Cache.getInstance(this, "authenticationContext",
                AuthenticationContext.class, CacheLevel.REGION_ACCOUNT, new TimePeriod<Day>(1, TimePeriod.DAY));
        ProviderContext ctx = getContext();

        if (ctx == null) {
            throw new CloudException("No context was set for this request");
        }
        Iterable<AuthenticationContext> current = cache.get(ctx);
        AuthenticationContext authenticationContext = null;

        NovaMethod method = new NovaMethod(this);

        if (current != null) {
            authenticationContext = current.iterator().next();
        } else {
            try {
                authenticationContext = method.authenticate();
            } finally {
                if (authenticationContext == null) {
                    NovaException.ExceptionItems items = new NovaException.ExceptionItems();

                    items.code = HttpStatus.SC_UNAUTHORIZED;
                    items.type = CloudErrorType.AUTHENTICATION;
                    items.message = "unauthorized";
                    items.details = "The API keys failed to authenticate with the specified endpoint.";
                    throw new NovaException(items);
                }
                cache.put(ctx, Collections.singletonList(authenticationContext));
                return authenticationContext;
            }
        }
        return authenticationContext;
    } finally {
        APITrace.end();
    }
}

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From source file:org.dasein.cloud.qingcloud.network.QingCloudIpAddress.java

private String getProviderDataCenterId() throws InternalException, CloudException {
    String regionId = getContext().getRegionId();
    if (regionId == null) {
        throw new InternalException("No region was set for this request");
    }/* w  ww . jav  a  2 s .  com*/

    Iterable<DataCenter> dataCenters = getProvider().getDataCenterServices().listDataCenters(regionId);
    return dataCenters.iterator().next().getProviderDataCenterId();//each account has one DC in each region
}

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From source file:com.sludev.commons.vfs2.provider.azure.AzFileObject.java

/**
 * Callback for checking the type of the current FileObject.  Typically can
 * be of type.../*w w w .ja  va  2  s  .com*/
 * FILE for regular remote files
 * FOLDER for regular remote containers
 * IMAGINARY for a path that does not exist remotely.
 * 
 * @return
 * @throws Exception 
 */
@Override
protected FileType doGetType() throws Exception {
    FileType res;

    Pair<String, String> path = getContainerAndPath();

    if (currBlob.exists()) {
        res = FileType.FILE;
    } else {
        // Blob Service does not have folders.  Just files with path separators in
        // their names.

        // Here's the trick for folders.
        //
        // Do a listing on that prefix.  If it returns anything, after not
        // existing, then it's a folder.
        String prefix = path.getRight();
        if (prefix.endsWith("/") == false) {
            // We need folders ( prefixes ) to end with a slash
            prefix += "/";
        }

        Iterable<ListBlobItem> blobs = null;
        if (prefix.equals("/")) {
            // Special root path case. List the root blobs with no prefix
            blobs = currContainer.listBlobs();
        } else {
            blobs = currContainer.listBlobs(prefix);
        }

        if (blobs.iterator().hasNext()) {
            res = FileType.FOLDER;
        } else {
            res = FileType.IMAGINARY;
        }
    }

    return res;
}

---

From source file:org.dasein.cloud.google.compute.server.GoogleDiskSupport.java

private @Nullable Volume toVolume(JSONObject json) throws CloudException, JSONException {
    if (json == null) {
        return null;
    }/*from   w  w w  .jav  a  2s.co  m*/
    Volume vol = new Volume();

    vol.setProviderRegionId(provider.getContext().getRegionId());
    vol.setType(VolumeType.HDD);

    if (json.has("name")) {
        vol.setProviderVolumeId(json.getString("name"));
        vol.setName(json.getString("name"));
    }

    if (json.has("description")) {
        vol.setDescription(json.getString("description"));
    }
    if (json.has("sizeGb")) {
        int size = Integer.parseInt(json.getString("sizeGb"));
        vol.setSize(new Storage<Gigabyte>(size, Storage.GIGABYTE));
    }
    if (json.has("sourceSnapshot")) {
        vol.setProviderSnapshotId(
                GoogleMethod.getResourceName(json.getString("sourceSnapshot"), GoogleMethod.SNAPSHOT));
    }
    if (json.has("zone")) {
        vol.setProviderDataCenterId(GoogleMethod.getResourceName(json.getString("zone"), GoogleMethod.ZONE));
    }

    if (json.has("creationTimestamp")) {
        SimpleDateFormat fmt = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS");
        String value = json.getString("creationTimestamp");
        try {
            vol.setCreationTimestamp(fmt.parse(value).getTime());
        } catch (java.text.ParseException e) {
            logger.error(e);
            e.printStackTrace();
            throw new CloudException(e);
        }
    }

    if (json.has("status")) {
        String s = json.getString("status");
        VolumeState state;

        if (s.equals("CREATING")) {
            state = VolumeState.PENDING;
        } else if (s.equals("READY")) {
            state = VolumeState.AVAILABLE;
        } else {
            state = VolumeState.DELETED;
        }
        vol.setCurrentState(state);
    }

    try {
        Iterable<String> vmIds = provider.getComputeServices().getVirtualMachineSupport()
                .getVirtualMachineWithVolume(vol.getProviderVolumeId());
        if (vmIds != null)
            vol.setProviderVirtualMachineId(vmIds.iterator().next());
    } catch (InternalException e) {
        e.printStackTrace();
        logger.error("Setting virutal machine id for disk failed");
        throw new CloudException(e);
    }

    return vol;
}

---

From source file:com.link_intersystems.lang.reflect.criteria.ClassCriteriaTest.java

@Test
public void innerClassesTraversal() {
    ClassCriteria criteria = new ClassCriteria();
    criteria.setTraverseStrategy(TraverseStrategy.DEPTH_FIRST);
    criteria.setSelection(ClassType.INNER_CLASSES);
    Iterable<Class<?>> iterable = criteria.getIterable(ClassWithInnerClasses.class);
    Iterator<Class<?>> classIterator = iterable.iterator();

    assertEquals(ClassWithInnerClasses.InnerClass.class, classIterator.next());
    assertEquals(ClassWithInnerClasses.InnerInterface.class, classIterator.next());
    assertEquals(ClassWithInnerClasses.StaticInnerClass.class, classIterator.next());
    assertEquals(ClassWithInnerClasses.StaticInnerInterface.class, classIterator.next());
    assertFalse(classIterator.hasNext());
}

---

From source file:org.jahia.services.usermanager.ldap.JahiaLDAPConfig.java

private String transformPropKeyToBeanAttr(String key) {
    Iterable<String> upperStrings = Iterables.transform(Arrays.asList(StringUtils.split(key, '.')),
            new Function<String, String>() {
                public String apply(String input) {
                    return (input == null) ? null : StringUtils.capitalize(input);
                }// ww  w.ja v a2s .  com
            });
    return StringUtils.uncapitalize(StringUtils.join(upperStrings.iterator(), ""));
}

---

From source file:com.uni.dao.etc.UniJpaRepository.java

public void deleteInBatch(Iterable<T> entities) {

    Assert.notNull(entities, "The given Iterable of entities not be null!");

    if (!entities.iterator().hasNext()) {
        return;/*ww  w  . j av  a  2 s  .c  o m*/
    }

    applyAndBind(getQueryString(DELETE_ALL_QUERY_STRING, entityInformation.getEntityName()), entities, em)
            .executeUpdate();
}

---

From source file:com.link_intersystems.lang.reflect.criteria.ClassCriteriaTest.java

@Test
public void innerClassesAndClassesTraversal() {
    ClassCriteria criteria = new ClassCriteria();
    criteria.setTraverseStrategy(TraverseStrategy.DEPTH_FIRST);
    criteria.setSelection(ClassType.INNER_CLASSES, ClassType.CLASSES);
    Iterable<Class<?>> iterable = criteria.getIterable(ClassWithInnerClasses.class);
    Iterator<Class<?>> classIterator = iterable.iterator();

    assertEquals(ClassWithInnerClasses.InnerClass.class, classIterator.next());
    assertEquals(ClassWithInnerClasses.InnerInterface.class, classIterator.next());
    assertEquals(ClassWithInnerClasses.StaticInnerClass.class, classIterator.next());
    assertEquals(ClassWithInnerClasses.StaticInnerInterface.class, classIterator.next());
    assertEquals(ClassWithInnerClasses.class, classIterator.next());
    assertEquals(Object.class, classIterator.next());
    assertEquals(Object.class, classIterator.next());
    assertEquals(Object.class, classIterator.next());
    assertFalse(classIterator.hasNext());
}

---

From source file:com.infinira.aerospike.dataaccess.repository.AerospikeRepository.java

/**
 * Find all entities in the database/*from  w w  w. ja v  a2 s. c o m*/
 * @return ArrayList of entity objects
 */
@Override
public ArrayList<T> findAll() {
    final ArrayList<T> scanList = new ArrayList<T>();
    Iterable<T> results = findAllUsingQuery(null);
    Iterator<T> iterator = results.iterator();
    try {
        while (iterator.hasNext()) {
            scanList.add(iterator.next());
            //System.out.println(iterator.next());
        }
    } finally {
        ((EntityIterator<T>) iterator).close();
    }
    return scanList;
}

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From source file:it.crs4.seal.demux.DemuxReducer.java

public void reduce(SequenceId key, Iterable<SequencedFragment> sequences,
        IMRContext<Text, SequencedFragment> context) throws IOException, InterruptedException {
    // XXX: this function is growing too much.  Consider refactoring.
    //////////////////////////////////////////
    // Fragments should all have non-null Read and Lane, as verified by the Mapper.
    // They should be ordered read 2, read 1, read 3 and over
    //////////////////////////////////////////
    Iterator<SequencedFragment> seqs_it = sequences.iterator();
    SequencedFragment fragment;/*  w  ww .j a v  a  2 s  .  com*/
    String flowcellId = "";
    String indexSeq = ""; // default index is blank
    String sampleId;
    String project;

    fragment = seqs_it.next();

    if (expectIndexRead) {
        // Fetch the first fragment from the list -- it should be the index sequence
        if (fragment.getRead() != 2)
            throw new RuntimeException("Missing read 2 in multiplexed input for location " + key.getLocation()
                    + ".  Record: " + fragment);

        indexSeq = fragment.getSequence().toString();
        // Sequenced tags have an additional 'A' base that separates them from the read. For this
        // reason, when we verify their length we check for BAR_CODE_{MIN,MAX}_LENGTH + 1
        if (indexSeq.length() < (SampleSheet.BAR_CODE_MIN_LENGTH + 1)
                || indexSeq.length() > (SampleSheet.BAR_CODE_MAX_LENGTH + 1)) {
            throw new RuntimeException(
                    String.format("Unexpected barcode sequence of length %d (expected in interval [%d, %d]",
                            indexSeq.length(), (SampleSheet.BAR_CODE_MIN_LENGTH + 1),
                            (SampleSheet.BAR_CODE_MAX_LENGTH + 1) + "])"));
        }

        // We've consumed this index read.  Advance to the next one.
        fragment = seqs_it.next();
    }

    // From here on, they should be all data reads.

    int lane = fragment.getLane();
    BarcodeLookup.Match m = barcodeLookup.getSampleId(lane, indexSeq);
    if (m == null) {
        sampleId = "unknown";
        project = ".";
    } else {
        sampleId = m.getEntry().getSampleId();
        flowcellId = m.getEntry().getFlowcellId();
        project = m.getEntry().getProject();
        if (project == null)
            project = Demux.DEFAULT_PROJECT;
        context.increment("Barcode base mismatches", String.valueOf(m.getMismatches()), 1);
    }

    // Project/sample results in that directory structure. The key is the same for all reads in iterator
    // TODO:  profile!  We're sanitizing and rebuilding the file name for
    // each set of reads.  It may be a significant waste of CPU that could be fixed by a caching mechanism.
    String keyString = Utils.sanitizeFilename(project) + '/' + Utils.sanitizeFilename(sampleId);
    outputKey.set(keyString);
    if (separatesReads) {
        // append a slash and an 'X' (the latter to make a space for the read number)
        outputKey.append(SLASH_X, 0, SLASH_X.length);
    }

    boolean done = false;
    do {
        fragment.setIndexSequence(indexSeq);

        // When we read qseq, the flowcell id isn't set (the file format doesn't include that data.
        // Since we have the chance here, we'l extract the flowcell id from the sample sheet
        // and set it on the outgoing SequencedFragment.
        if (fragment.getFlowcellId() == null)
            fragment.setFlowcellId(flowcellId);

        if (expectIndexRead && fragment.getRead() > 2)
            fragment.setRead(fragment.getRead() - 1);

        if (separatesReads) {
            // Overwrite the last character of the key with the read number.
            // This technique only supports single digit read numbers
            outputKey.getBytes()[outputKey.getLength() - 1] = (byte) (fragment.getRead().byteValue() + '0');
        }

        context.write(outputKey, fragment);
        context.increment("Sample reads", keyString, 1);

        if (seqs_it.hasNext())
            fragment = seqs_it.next();
        else
            done = true;
    } while (!done);

    if (fragment.getRead() > 2) { // although the code above is generic and will handle any number of reads,
                                  // in our current use cases any more than 2 data reads (non-index) indicate
                                  // a problem with the data.
                                  // XXX: if someone removes this check, verify the "separatesReads" section above.
        throw new RuntimeException("Unexpected output read number " + fragment.getRead() + " at location "
                + key.getLocation()
                + " (note that if read number may have been decremented by 1 if an index sequence was present).");
    }
}

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