Example usage for org.hibernate Session buildLockRequest

Introduction

In this page you can find the example usage for org.hibernate Session buildLockRequest.

Prototype

LockRequest buildLockRequest(LockOptions lockOptions);

Source Link

Document

Build a LockRequest that specifies the LockMode, pessimistic lock timeout and lock scope.

Usage

From source file:ca.mcgill.cs.swevo.qualyzer.model.PersistenceManager.java

License:Open Source License

/**
 * //from  w  w w  .j  av  a  2 s . co  m
 * Does something.
 * 
 * @param project
 * @return
 */
public void initializeDocument(IAnnotatedDocument document) {
    HibernateDBManager dbManager = fActivator.getHibernateDBManagers()
            .get(document.getProject().getFolderName());

    Session session = dbManager.openSession();
    try {
        // Reattach
        session.buildLockRequest(LockOptions.NONE).lock(document);
        Hibernate.initialize(document.getParticipants());
        Hibernate.initialize(document.getFragments());
    } finally {
        HibernateUtil.quietClose(session);
    }
}

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From source file:ch.algotrader.dao.AbstractDao.java

License:Open Source License

public void lock(final E entity, final LockOptions lockOptions) {

    Session currentSession = getCurrentSession();
    Session.LockRequest lockRequest = currentSession.buildLockRequest(lockOptions);
    lockRequest.lock(entity);/*  w ww  . ja  v  a2  s .  c om*/
}

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From source file:com.algoTrader.service.TransactionServiceImpl.java

License:Open Source License

protected void handleCreateTransaction(Fill fill) throws Exception {

    Strategy strategy = fill.getParentOrder().getStrategy();
    Security security = fill.getParentOrder().getSecurity();

    // lock and initialize the security & strategy
    Session session = this.getSessionFactory().getCurrentSession();
    session.buildLockRequest(LockOptions.NONE).lock(security);
    session.buildLockRequest(LockOptions.NONE).lock(strategy);
    Hibernate.initialize(security);//from  w  w w.  ja  v a  2  s  . c  om
    Hibernate.initialize(strategy);

    TransactionType transactionType = Side.BUY.equals(fill.getSide()) ? TransactionType.BUY
            : TransactionType.SELL;
    long quantity = Side.BUY.equals(fill.getSide()) ? fill.getQuantity() : -fill.getQuantity();

    Transaction transaction = new TransactionImpl();
    transaction.setDateTime(fill.getDateTime());
    transaction.setQuantity(quantity);
    transaction.setPrice(fill.getPrice());
    transaction.setType(transactionType);
    transaction.setSecurity(security);
    transaction.setStrategy(strategy);
    transaction.setCurrency(security.getSecurityFamily().getCurrency());
    transaction.setCommission(fill.getCommission());

    // Strategy
    strategy.getTransactions().add(transaction);

    // Position
    Position position = getPositionDao().findBySecurityAndStrategy(security.getId(), strategy.getName());
    if (position == null) {

        position = new PositionImpl();
        position.setQuantity(transaction.getQuantity());

        position.setExitValue(null);
        position.setMaintenanceMargin(null);

        position.setSecurity(security);
        security.getPositions().add(position);

        position.getTransactions().add(transaction);
        transaction.setPosition(position);

        position.setStrategy(strategy);
        strategy.getPositions().add(position);

        getPositionDao().create(position);

    } else {

        position.setQuantity(position.getQuantity() + transaction.getQuantity());

        if (!position.isOpen()) {
            position.setExitValue(null);
            position.setMaintenanceMargin(null);
        }

        position.getTransactions().add(transaction);
        transaction.setPosition(position);

        getPositionDao().update(position);
    }

    getTransactionDao().create(transaction);
    getStrategyDao().update(strategy);
    getSecurityDao().update(security);

    // progapate the order to all corresponding esper engines
    propagateTransaction(transaction);

    String logMessage = "executed transaction type: " + transactionType + " quantity: "
            + transaction.getQuantity() + " of " + security.getSymbol() + " price: " + transaction.getPrice()
            + " commission: " + transaction.getCommission();

    logger.info(logMessage);
}

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From source file:com.algoTrader.util.HibernateUtil.java

License:Open Source License

public static boolean lock(SessionFactory sessionFactory, Object target) {

    Session session = sessionFactory.getCurrentSession();

    try {/*  w  w w.j a  v a 2s  . c om*/
        session.buildLockRequest(LockOptions.NONE).lock(target);
        return true;
    } catch (NonUniqueObjectException e) {
        //  different object with the same identifier value was already associated with the session
        return false;
    }
}

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From source file:de.tudarmstadt.ukp.wikipedia.api.Page.java

License:Apache License

/**
 * Returns a set of categories that this page belongs to.
 *
 * @return The a set of categories that this page belongs to.
 *///  w w  w  .  j a v a  2 s .c  om
public Set<Category> getCategories() {
    Session session = this.wiki.__getHibernateSession();
    session.beginTransaction();
    session.buildLockRequest(LockOptions.NONE).lock(hibernatePage);
    Set<Integer> tmp = new UnmodifiableArraySet<Integer>(hibernatePage.getCategories());
    session.getTransaction().commit();

    Set<Category> categories = new HashSet<Category>();
    for (int pageID : tmp) {
        categories.add(wiki.getCategory(pageID));
    }

    return categories;
}

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From source file:de.tudarmstadt.ukp.wikipedia.api.Page.java

License:Apache License

/**
 * Returns the set of pages that have a link pointing to this page. <b>Warning:</b> Do not use
 * this for getting the number of inlinks with getInlinks().size(). This is too slow. Use
 * getNumberOfInlinks() instead./*from  ww w.ja  va  2  s .com*/
 *
 * @return The set of pages that have a link pointing to this page.
 */
public Set<Page> getInlinks() {
    Session session = wiki.__getHibernateSession();
    session.beginTransaction();
    session.buildLockRequest(LockOptions.NONE).lock(hibernatePage);
    // Have to copy links here since getPage later will close the session.
    Set<Integer> pageIDs = new UnmodifiableArraySet<Integer>(hibernatePage.getInLinks());
    session.getTransaction().commit();

    Set<Page> pages = new HashSet<Page>();
    for (int pageID : pageIDs) {
        try {
            pages.add(wiki.getPage(pageID));
        } catch (WikiApiException e) {
            // Silently ignore if a page could not be found
            // There may be inlinks that do not come from an existing page.
            continue;
        }
    }

    return pages;
}

---

From source file:de.tudarmstadt.ukp.wikipedia.api.Page.java

License:Apache License

/**
 * The result set may also contain links from non-existing pages. It is in the responsibility of
 * the user to check whether the page exists.
 *
 * @return Returns the IDs of the inLinks of this page.
 *///from  w  ww .  j  av a 2 s. co  m
public Set<Integer> getInlinkIDs() {
    Set<Integer> tmpSet = new HashSet<Integer>();

    Session session = wiki.__getHibernateSession();
    session.beginTransaction();
    session.buildLockRequest(LockOptions.NONE).lock(hibernatePage);

    tmpSet.addAll(hibernatePage.getInLinks());

    session.getTransaction().commit();

    return tmpSet;
}

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From source file:de.tudarmstadt.ukp.wikipedia.api.Page.java

License:Apache License

/**
 * Returns the set of pages that are linked from this page. Outlinks in a page might also point
 * to non-existing pages. They are not included in the result set. <b>Warning:</b> Do not use
 * this for getting the number of outlinks with getOutlinks().size(). This is too slow. Use
 * getNumberOfOutlinks() instead./* w  ww .ja  v  a2  s.  c  o m*/
 *
 * @return The set of pages that are linked from this page.
 */
public Set<Page> getOutlinks() {
    Session session = wiki.__getHibernateSession();
    session.beginTransaction();
    //      session.lock(hibernatePage, LockMode.NONE);
    session.buildLockRequest(LockOptions.NONE).lock(hibernatePage);
    // Have to copy links here since getPage later will close the session.
    Set<Integer> tmpSet = new UnmodifiableArraySet<Integer>(hibernatePage.getOutLinks());
    session.getTransaction().commit();

    Set<Page> pages = new HashSet<Page>();
    for (int pageID : tmpSet) {
        try {
            pages.add(wiki.getPage(pageID));
        } catch (WikiApiException e) {
            // Silently ignore if a page could not be found.
            // There may be outlinks pointing to non-existing pages.
        }
    }
    return pages;
}

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From source file:de.tudarmstadt.ukp.wikipedia.api.Page.java

License:Apache License

/**
 * The result set may also contain links from non-existing pages. It is in the responsibility of
 * the user to check whether the page exists.
 *
 * @return Returns the IDs of the outLinks of this page.
 *//*from   w w  w .ja v a2 s .c  om*/
public Set<Integer> getOutlinkIDs() {
    Set<Integer> tmpSet = new HashSet<Integer>();

    Session session = wiki.__getHibernateSession();
    session.beginTransaction();
    session.buildLockRequest(LockOptions.NONE).lock(hibernatePage);

    tmpSet.addAll(hibernatePage.getOutLinks());

    session.getTransaction().commit();
    return tmpSet;
}

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From source file:de.tudarmstadt.ukp.wikipedia.api.Page.java

License:Apache License

/**
 * Returns the set of strings that are redirects to this page.
 *
 * @return The set of redirect strings.//from w  ww  .j  a v  a2  s .c  om
 */
public Set<String> getRedirects() {
    Session session = wiki.__getHibernateSession();
    session.beginTransaction();
    session.buildLockRequest(LockOptions.NONE).lock(hibernatePage);
    Set<String> tmpSet = new HashSet<String>(hibernatePage.getRedirects());
    session.getTransaction().commit();
    return tmpSet;
}

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