Example usage for java.util Collection clear

Introduction

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

Prototype

void clear();

Source Link

Document

Removes all of the elements from this collection (optional operation).

Usage

From source file:org.nuclos.common.collection.CollectionUtils.java

/**
 * splits <code>iterable</code> into the objects that satisfy or don't satisfy the given predicate, respectively.
 * @param iterable is not changed./*  ww w. ja v  a  2 s .  c o m*/
 * @param predicate
 * @param collTrue on exit, contains the objects from <code>iterable</code> that satisfy the <code>predicate</code>.
 * @param collFalse on exit, contains the objects from <code>iterable</code> that don't satisfy the <code>predicate</code>.
 * @precondition iterable != null
 * @precondition predicate != null
 * @precondition collTrue != null
 * @precondition collFalse != null
 */
public static <E> void split(Iterable<E> iterable, Predicate<? super E> predicate,
        Collection<? super E> collTrue, Collection<? super E> collFalse) {
    collTrue.clear();
    collFalse.clear();
    for (E e : iterable) {
        // Unfortunately, the compiler complains about this one:
        // (predicate.evaluate(e) ? collTrue : collFalse).add(e);

        if (predicate.evaluate(e)) {
            collTrue.add(e);
        } else {
            collFalse.add(e);
        }
    }
}

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From source file:org.apache.ode.bpel.engine.cron.CronScheduler.java

public void cancelProcessCronJobs(QName pid, boolean undeployed) {
    assert pid != null;

    if (__log.isDebugEnabled())
        __log.debug("Cancelling PROCESS CRON jobs for: " + pid);
    Collection<TerminationListener> listenersToTerminate = new ArrayList<TerminationListener>();

    synchronized (_terminationListenersByPid) {
        Collection<TerminationListener> listeners = _terminationListenersByPid.get(pid);
        if (listeners != null) {
            listenersToTerminate.addAll(listeners);
            listeners.clear();
        }/*w w  w  . ja  v a  2 s . com*/
        if (undeployed) {
            _terminationListenersByPid.remove(pid);
        }
    }

    // terminate existing cron jobs if there are
    synchronized (pid) {
        for (TerminationListener listener : listenersToTerminate) {
            listener.terminate();
        }
    }
}

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From source file:org.ohmage.request.clazz.ClassSearchRequest.java

@Override
public void service() {
    LOGGER.info("Servicing the class search request.");

    if (!authenticate(AllowNewAccount.NEW_ACCOUNT_DISALLOWED)) {
        return;//from   w w w  . j av  a 2s.  c  o  m
    }

    try {
        LOGGER.info("Checking that the user is an admin.");
        UserServices.instance().verifyUserIsAdmin(getUser().getUsername());

        LOGGER.info("Searching for the classes that satisfy the parameters.");
        Collection<String> classIds = ClassServices.instance().classIdSearch(classId, className,
                classDescription);
        totalNumResults = classIds.size();

        if (numToSkip >= classIds.size()) {
            classIds.clear();
        } else if (numToReturn >= 0) {
            List<String> sortedClassIds = new ArrayList<String>(classIds);
            Collections.sort(sortedClassIds);

            int lastIndex = numToSkip + numToReturn;
            if (lastIndex > totalNumResults) {
                lastIndex = totalNumResults;
            }

            classIds = sortedClassIds.subList(numToSkip, lastIndex);
        }

        LOGGER.info("Gathering the detailed information about the classes.");
        classes.putAll(ClassServices.instance().getClassesInformation(getUser().getUsername(), classIds, null,
                null, null, true));

        LOGGER.info("Gathering the IDs for the campaigns associated with each class.");
        for (Clazz clazz : classes.keySet()) {
            classToCampaignIdsMap.put(clazz,
                    CampaignClassServices.instance().getCampaignIdsForClass(clazz.getId()));
        }
    } catch (ServiceException e) {
        e.failRequest(this);
        e.logException(LOGGER);
    }
}

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From source file:mitm.djigzo.web.pages.crl.CRLImport.java

public void onSuccess() throws CertificateException, NoSuchProviderException, SecurityFactoryFactoryException,
        CRLException, IOException, WebServiceCheckedException {
    importCount = new Integer(0);

    /*//  ww  w.  jav a2  s . c  o m
     * It should already be checked that the file contains certificates.
     */
    Collection<X509CRL> crls = CRLUtils.readX509CRLs(file.getStream());

    totalCount = crls.size();

    Collection<X509CRL> batch = new LinkedList<X509CRL>();

    for (X509CRL crl : crls) {
        if (accept(crl)) {
            batch.add(crl);

            if (batch.size() == maxBatchSize) {
                addCRLs(batch);

                batch.clear();
            }
        }
    }

    /*
     * Check if there are still some certificates left to add (happens when the number
     * of certificates is not a multiple of maxBatchSize)
     */
    if (batch.size() > 0) {
        addCRLs(batch);
    }
}

---

From source file:ubic.gemma.persistence.service.genome.biosequence.BioSequenceDaoImpl.java

@Override
public Map<Gene, Collection<BioSequence>> findByGenes(Collection<Gene> genes) {
    if (genes == null || genes.isEmpty())
        return new HashMap<>();

    Map<Gene, Collection<BioSequence>> results = new HashMap<>();

    int batchSize = 500;

    if (genes.size() <= batchSize) {
        this.findByGenesBatch(genes, results);
        return results;
    }/*  w  w  w  .ja va  2s  .  c  o  m*/

    Collection<Gene> batch = new HashSet<>();

    for (Gene gene : genes) {
        batch.add(gene);
        if (batch.size() == batchSize) {
            this.findByGenesBatch(genes, results);
            batch.clear();
        }
    }

    if (!batch.isEmpty()) {
        this.findByGenesBatch(genes, results);
    }

    return results;
}

---

From source file:ubic.gemma.persistence.service.genome.biosequence.BioSequenceDaoImpl.java

@Override
public Collection<BioSequence> thaw(final Collection<BioSequence> bioSequences) {
    if (bioSequences.isEmpty())
        return new HashSet<>();

    Collection<BioSequence> result = new HashSet<>();
    Collection<BioSequence> batch = new HashSet<>();

    for (BioSequence g : bioSequences) {
        batch.add(g);/*  w  w w.j  a  v a2 s. c  om*/
        if (batch.size() == 100) {
            result.addAll(this.doThawBatch(batch));
            batch.clear();
        }
    }

    if (!batch.isEmpty()) {
        result.addAll(this.doThawBatch(batch));
    }

    return result;
}

---

From source file:org.ambraproject.article.service.IngesterImpl.java

/**
 * Update an existing article by copying properties from the new one over.  Note that we can't call saveOrUpdate,
 * since the new article is not a persistent instance, but has all the properties that we want.
 * <p/>/* w w w  .j av a 2 s  .  c om*/
 * See <a href="http://stackoverflow.com/questions/4779239/update-persistent-object-with-transient-object-using-hibernate">this
 * post on stack overflow</a> for more information
 * <p/>
 * For collections, we clear the old property and add all the new entries, relying on 'delete-orphan' to delete the
 * old objects. The downside of this approach is that it results in a delete statement for each entry in the old
 * collection, and an insert statement for each entry in the new collection.  There a couple of things we could do to
 * optimize this: <ol> <li>Write a sql statement to delete the old entries in one go</li> <li>copy over collection
 * properties recursively instead of clearing the old collection.  e.g. for {@link Article#assets}, instead of
 * clearing out the old list, we would find the matching asset by DOI and Extension, and update its properties</li>
 * </ol>
 * <p/>
 * Option number 2 is messy and a lot of code (I've done it before)
 *
 * @param article         the new article, parsed from the xml
 * @param existingArticle the article pulled up from the database
 * @throws IngestException if there's a problem copying properties or updating
 */
@SuppressWarnings("unchecked")
private void updateArticle(final Article article, final Article existingArticle) throws IngestException {
    log.debug("ReIngesting (force ingest) article: {}", existingArticle.getDoi());
    //Hibernate deletes orphans after inserting the new rows, which violates a unique constraint on (doi, extension) for assets
    //this temporary change gets around the problem, before the old assets are orphaned and deleted
    hibernateTemplate.execute(new HibernateCallback() {
        @Override
        public Object doInHibernate(Session session) throws HibernateException, SQLException {
            session.createSQLQuery("update articleAsset " + "set doi = concat('old-',doi), "
                    + "extension = concat('old-',extension) " + "where articleID = :articleID")
                    .setParameter("articleID", existingArticle.getID()).executeUpdate();
            return null;
        }
    });

    final BeanWrapper source = new BeanWrapperImpl(article);
    final BeanWrapper destination = new BeanWrapperImpl(existingArticle);

    try {
        //copy properties
        for (final PropertyDescriptor property : destination.getPropertyDescriptors()) {
            final String name = property.getName();
            if (!name.equals("ID") && !name.equals("created") && !name.equals("lastModified")
                    && !name.equals("class")) {
                //Collections shouldn't be dereferenced but have elements added
                //See http://www.onkarjoshi.com/blog/188/hibernateexception-a-collection-with-cascade-all-delete-orphan-was-no-longer-referenced-by-the-owning-entity-instance/
                if (Collection.class.isAssignableFrom(property.getPropertyType())) {
                    Collection orig = (Collection) destination.getPropertyValue(name);
                    orig.clear();
                    Collection sourcePropertyValue = (Collection) source.getPropertyValue(name);
                    if (sourcePropertyValue != null) {
                        orig.addAll((Collection) source.getPropertyValue(name));
                    }
                } else {
                    //just set the new value
                    destination.setPropertyValue(name, source.getPropertyValue(name));
                }
            }
        }
        //Circular relationship in related articles
        for (ArticleRelationship articleRelationship : existingArticle.getRelatedArticles()) {
            articleRelationship.setParentArticle(existingArticle);
        }
    } catch (Exception e) {
        throw new IngestException("Error copying properties for article " + article.getDoi(), e);
    }

    hibernateTemplate.update(existingArticle);
}

---

From source file:ubic.gemma.core.analysis.service.GeneMultifunctionalityPopulationServiceImpl.java

@Override
public void updateMultifunctionality(Taxon taxon) {
    Collection<Gene> genes = geneService.loadAll(taxon);

    if (genes.isEmpty()) {
        GeneMultifunctionalityPopulationServiceImpl.log.warn("No genes found for " + taxon);
        return;//w ww  .j  a v  a  2 s . c  om
    }

    Map<Gene, Collection<String>> gomap = this.fetchGoAnnotations(genes);

    Map<Gene, Multifunctionality> mfs = this.computeMultifunctionality(gomap);

    GeneMultifunctionalityPopulationServiceImpl.log
            .info("Saving multifunctionality for " + genes.size() + " genes");

    Collection<Gene> batch = new HashSet<>();

    int batchSize = 200;
    int i = 0;
    for (Gene g : genes) {
        batch.add(g);

        if (batch.size() == batchSize) {
            this.saveBatch(batch, mfs);
            batch.clear();
        }

        if (++i % 1000 == 0) {
            GeneMultifunctionalityPopulationServiceImpl.log.info("Updated " + i + " genes/" + genes.size());
        }
    }

    if (!batch.isEmpty()) {
        this.saveBatch(batch, mfs);
    }

    GeneMultifunctionalityPopulationServiceImpl.log.info("Done");
}

---

From source file:forge.game.mana.ManaPool.java

private void convertManaColor(final byte originalColor, final byte toColor) {
    List<Mana> convert = new ArrayList<Mana>();
    Collection<Mana> cm = floatingMana.get(originalColor);
    for (Mana m : cm) {
        convert.add(new Mana(toColor, m.getSourceCard(), m.getManaAbility()));
    }/*from   w w  w .j  a v a 2  s.  c  om*/
    cm.clear();
    floatingMana.putAll(toColor, convert);
    owner.updateManaForView();
}

---

From source file:ubic.gemma.analysis.service.GeneMultifunctionalityPopulationServiceImpl.java

@Override
public void updateMultifunctionality(Taxon taxon) {
    Collection<Gene> genes = geneService.loadAll(taxon);

    if (genes.isEmpty()) {
        log.warn("No genes found for " + taxon);
        return;/*ww  w. java2  s .  c o  m*/
    }

    Map<Gene, Collection<String>> gomap = fetchGoAnnotations(genes);

    Map<Gene, Multifunctionality> mfs = computeMultifunctionality(gomap);

    log.info("Saving multifunctionality for " + genes.size() + " genes");

    Collection<Gene> batch = new HashSet<Gene>();

    int batchSize = 200;
    int i = 0;
    for (Gene g : genes) {
        batch.add(g);

        if (batch.size() == batchSize) {
            saveBatch(batch, mfs);
            batch.clear();
        }

        if (++i % 1000 == 0) {
            log.info("Updated " + i + " genes/" + genes.size());
        }
    }

    if (!batch.isEmpty()) {
        saveBatch(batch, mfs);
    }

    log.info("Done");
}

---

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