Example usage for javax.persistence EntityManager isOpen

Introduction

In this page you can find the example usage for javax.persistence EntityManager isOpen.

Prototype

public boolean isOpen();

Source Link

Document

Determine whether the entity manager is open.

Usage

From source file:org.apache.airavata.persistance.registry.jpa.ResourceUtils.java

public static Resource getGateway(String gatewayName) throws RegistryException {
    EntityManager em = null;
    try {// ww w  .  j  a va2 s .c  om
        if (isGatewayExist(gatewayName)) {
            em = getEntityManager();
            Gateway gateway = em.find(Gateway.class, gatewayName);
            GatewayResource gatewayResource = (GatewayResource) Utils.getResource(ResourceType.GATEWAY,
                    gateway);
            em.close();
            return gatewayResource;
        }
    } catch (Exception e) {
        logger.error(e.getMessage(), e);
        throw new RegistryException(e);
    } finally {
        if (em != null && em.isOpen()) {
            if (em.getTransaction().isActive()) {
                em.getTransaction().rollback();
            }
            em.close();
        }
    }
    return null;
}

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From source file:org.apache.airavata.persistance.registry.jpa.ResourceUtils.java

public static boolean isUserExist(String username) throws RegistryException {
    EntityManager em = null;
    try {//  w ww .  ja  v  a  2 s . co  m
        em = getEntityManager();
        em.getTransaction().begin();
        QueryGenerator generator = new QueryGenerator(AbstractResource.USERS);
        generator.setParameter(AbstractResource.UserConstants.USERNAME, username);
        Query q = generator.selectQuery(em);
        int size = q.getResultList().size();
        em.getTransaction().commit();
        em.close();
        return size > 0;
    } catch (Exception e) {
        logger.error(e.getMessage(), e);
        throw new RegistryException(e);
    } finally {
        if (em != null && em.isOpen()) {
            if (em.getTransaction().isActive()) {
                em.getTransaction().rollback();
            }
            em.close();
        }
    }
}

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From source file:org.apache.airavata.persistance.registry.jpa.ResourceUtils.java

public static Resource getUser(String userName) throws RegistryException {
    EntityManager em = null;
    try {//from  w w  w.  j a v a  2 s .  c  o  m
        if (isUserExist(userName)) {
            em = getEntityManager();
            Users user = em.find(Users.class, userName);
            UserResource userResource = (UserResource) Utils.getResource(ResourceType.USER, user);
            em.close();
            return userResource;
        }
    } catch (Exception e) {
        logger.error(e.getMessage(), e);
        throw new RegistryException(e);
    } finally {
        if (em != null && em.isOpen()) {
            if (em.getTransaction().isActive()) {
                em.getTransaction().rollback();
            }
            em.close();
        }
    }
    return null;

}

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From source file:org.apache.airavata.persistance.registry.jpa.ResourceUtils.java

public static Resource getWorker(String gatewayName, String userName) throws RegistryException {
    EntityManager em = null;
    try {//from w  ww. j  a  va 2  s  .co m
        em = getEntityManager();
        Gateway_Worker gatewayWorker = em.find(Gateway_Worker.class,
                new Gateway_Worker_PK(gatewayName, userName));
        WorkerResource workerResource = (WorkerResource) Utils.getResource(ResourceType.GATEWAY_WORKER,
                gatewayWorker);
        em.close();
        return workerResource;
    } catch (Exception e) {
        logger.error(e.getMessage(), e);
        throw new RegistryException(e);
    } finally {
        if (em != null && em.isOpen()) {
            if (em.getTransaction().isActive()) {
                em.getTransaction().rollback();
            }
            em.close();
        }
    }

}

---

From source file:org.apache.airavata.persistance.registry.jpa.ResourceUtils.java

/**
 * @param gatewayName//from  w  w w.j  a  v a 2s.c o m
 * @return
 */
public static boolean isGatewayExist(String gatewayName) throws RegistryException {
    EntityManager em = null;
    try {
        em = getEntityManager();
        em.getTransaction().begin();
        QueryGenerator generator = new QueryGenerator(AbstractResource.GATEWAY);
        generator.setParameter(AbstractResource.GatewayConstants.GATEWAY_NAME, gatewayName);
        Query q = generator.selectQuery(em);
        int size = q.getResultList().size();
        em.getTransaction().commit();
        em.close();
        return size > 0;
    } catch (Exception e) {
        logger.error(e.getMessage(), e);
        throw new RegistryException(e);
    } finally {
        if (em != null && em.isOpen()) {
            if (em.getTransaction().isActive()) {
                em.getTransaction().rollback();
            }
            em.close();
        }
    }

}

---

From source file:org.apache.airavata.persistance.registry.jpa.ResourceUtils.java

/**
 * @param gatewayName/*w w  w  . j av  a  2s  .c  o  m*/
 * @return
 */
public static boolean removeGateway(String gatewayName) {
    EntityManager em = null;
    try {
        em = getEntityManager();
        em.getTransaction().begin();
        QueryGenerator generator = new QueryGenerator(AbstractResource.GATEWAY);
        generator.setParameter(AbstractResource.GatewayConstants.GATEWAY_NAME, gatewayName);
        Query q = generator.deleteQuery(em);
        q.executeUpdate();
        em.getTransaction().commit();
        em.close();
        return true;
    } catch (Exception e) {
        logger.error(e.getMessage(), e);
        return false;
    } finally {
        if (em != null && em.isOpen()) {
            if (em.getTransaction().isActive()) {
                em.getTransaction().rollback();
            }
            em.close();
        }
    }
}

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From source file:org.apache.airavata.persistance.registry.jpa.ResourceUtils.java

/**
 * @param gatewayResource/* w ww .j  a  v a  2  s  .co  m*/
 * @param userResource
 */
public static WorkerResource addGatewayWorker(GatewayResource gatewayResource, UserResource userResource)
        throws RegistryException {
    EntityManager em = null;
    try {
        em = getEntityManager();
        em.getTransaction().begin();
        if (!isGatewayExist(gatewayResource.getGatewayName())) {
            gatewayResource.save();
        }
        if (!isUserExist(userResource.getUserName())) {
            userResource.save();
        }
        Gateway gateway = em.find(Gateway.class, gatewayResource.getGatewayName());
        Users user = em.find(Users.class, userResource.getUserName());
        Gateway_Worker gatewayWorker = new Gateway_Worker();
        gatewayWorker.setGateway(gateway);
        gatewayWorker.setUser(user);
        em.persist(gatewayWorker);
        em.getTransaction().commit();
        em.close();
        return (WorkerResource) Utils.getResource(ResourceType.GATEWAY_WORKER, gatewayWorker);
    } catch (Exception e) {
        logger.error(e.getMessage(), e);
        throw new RegistryException(e);
    } finally {
        if (em != null && em.isOpen()) {
            if (em.getTransaction().isActive()) {
                em.getTransaction().rollback();
            }
            em.close();
        }
    }
}

---

From source file:org.apache.airavata.persistance.registry.jpa.ResourceUtils.java

/**
 * @param gatewayResource/*from ww  w  . ja  va 2 s  .com*/
 * @param userResource
 * @return
 */
public static boolean removeGatewayWorker(GatewayResource gatewayResource, UserResource userResource) {
    EntityManager em = null;
    try {
        em = getEntityManager();
        em.getTransaction().begin();
        QueryGenerator generator = new QueryGenerator(AbstractResource.GATEWAY_WORKER);
        generator.setParameter(AbstractResource.GatewayWorkerConstants.GATEWAY_NAME,
                gatewayResource.getGatewayName());
        generator.setParameter(AbstractResource.UserConstants.USERNAME, userResource.getUserName());
        Query q = generator.deleteQuery(em);
        q.executeUpdate();
        em.getTransaction().commit();
        em.close();
        return true;
    } catch (Exception e) {
        logger.error(e.getMessage(), e);
        return false;
    } finally {
        if (em != null && em.isOpen()) {
            if (em.getTransaction().isActive()) {
                em.getTransaction().rollback();
            }
            em.close();
        }
    }

}

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From source file:org.apache.airavata.persistance.registry.jpa.ResourceUtils.java

/**
 * @param configKey/*from w w w .j a v  a2s .c  o m*/
 * @return
 */
public static List<ConfigurationResource> getConfigurations(String configKey) {
    List<ConfigurationResource> list = new ArrayList<ConfigurationResource>();
    EntityManager em = null;
    try {
        em = getEntityManager();
        em.getTransaction().begin();
        QueryGenerator generator = new QueryGenerator(AbstractResource.CONFIGURATION);
        generator.setParameter(AbstractResource.ConfigurationConstants.CONFIG_KEY, configKey);
        Query q = generator.selectQuery(em);
        List<?> resultList = q.getResultList();
        if (resultList.size() != 0) {
            for (Object result : resultList) {
                ConfigurationResource configurationResource = createConfigurationResourceObject(result);
                list.add(configurationResource);
            }
        }
        em.getTransaction().commit();
        em.close();
    } catch (Exception e) {
        logger.error(e.getMessage(), e);
    } finally {
        if (em != null && em.isOpen()) {
            if (em.getTransaction().isActive()) {
                em.getTransaction().rollback();
            }
            em.close();
        }
    }
    return list;
}

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From source file:org.apache.airavata.persistance.registry.jpa.ResourceUtils.java

/**
 * @param configkey/*from  w w w  . j ava2s .  c om*/
 * @param configValue
 */
public static void removeConfiguration(String configkey, String configValue) throws RegistryException {
    QueryGenerator queryGenerator = new QueryGenerator(AbstractResource.CONFIGURATION);
    queryGenerator.setParameter(AbstractResource.ConfigurationConstants.CONFIG_KEY, configkey);
    queryGenerator.setParameter(AbstractResource.ConfigurationConstants.CONFIG_VAL, configValue);
    EntityManager em = null;
    try {
        if (isConfigurationExists(configkey, configValue)) {
            em = getEntityManager();
            em.getTransaction().begin();
            Query q = queryGenerator.deleteQuery(em);
            q.executeUpdate();
            em.getTransaction().commit();
            em.close();
        }
    } catch (Exception e) {
        logger.error(e.getMessage(), e);
        throw new RegistryException(e);
    } finally {
        if (em != null && em.isOpen()) {
            if (em.getTransaction().isActive()) {
                em.getTransaction().rollback();
            }
            em.close();
        }
    }
}

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