Example usage for javax.persistence EntityManager createQuery

Introduction

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

Prototype

public Query createQuery(CriteriaDelete deleteQuery);

Source Link

Document

Create an instance of Query for executing a criteria delete query.

Usage

From source file:corner.orm.gae.impl.PaginatedJapEntityService.java

License:asdf

/**
* 
* magic paginate method.//w ww  .ja va  2s  . c om
* eg:
* <code>
*  options.setPage(2);
*
*
*  paginate(Member.class,new Object[]{"email=?","asdf@asdf.net"},"userName desc",options)
        
*  paginate(Member.class,"email='asdf@asdf.net'","userName desc",options)
*
*  List conditions = new ArrayList();
*  conditions.add("userName=? and password=?");
*  conditions.add(userName);
*  conditions.add(password);
*  paginate(Member.class,conditions,"userName desc",options)
* 
* </code>
* Magic conditions query criteria
* @param persistClass persistence class
* @param conditions query criteria
* @param order order by sql
* @param options pagination options.
* @return include result and totalRecord.
*/
public PaginationList paginate(final Class<?> persistClass, final Object conditions, final String order,
        final PaginationOptions options) {
    final Iterable con = typeCoercer.coerce(conditions, Iterable.class);

    return (PaginationList) this.template.execute(new JpaCallback() {
        @Override
        public Object doInJpa(EntityManager entityManager) throws PersistenceException {

            final Iterator it = con == null ? null : con.iterator();

            String conditionJPQL = buildConditionJPQL(persistClass, it).toString();

            //query list
            final StringBuffer queryJPQL = new StringBuffer(conditionJPQL);
            appendOrder(queryJPQL, order);
            queryJPQL.insert(0, "select root." + EntityConstants.ID_PROPERTY_NAME);
            Query query = entityManager.createQuery(queryJPQL.toString());

            //count query
            final StringBuffer countJPQL = new StringBuffer(conditionJPQL);
            countJPQL.insert(0, "select count(root) ");
            Query countQuery = entityManager.createQuery(countJPQL.toString());

            if (it != null) {
                int i = 0;
                while (it.hasNext()) {
                    i++;
                    Object obj = it.next();
                    query.setParameter(String.valueOf(i), obj);
                    countQuery.setParameter(String.valueOf(i), obj);
                }
            }
            //get perpage
            int perPage = options.getPerPage();
            int page = options.getPage();
            if (page < 1) {
                page = 1;
            }
            query.setFirstResult((page - 1) * perPage);
            query.setMaxResults(perPage);
            PaginationList list = new PaginationList(query.getResultList().iterator(), options);

            //query total record number
            //beacause jpa rowCount is integer type.so convert as long
            options.setTotalRecord(Long.parseLong(countQuery.getSingleResult().toString()));
            return list;
        }
    });
}

---

From source file:com.espirit.moddev.examples.uxbridge.newsdrilldown.test.CommandITCase.java

/**
 * Test delete.//  www .jav  a 2 s  .  c o  m
 *
 * @throws Exception the exception
 */
@Test
public void testDelete() throws Exception {

    long size = countArticles();

    EntityManager em = emf.createEntityManager();

    String[] ids = new String[] { "132" };

    // insert all items
    for (String id : ids) {
        // item should not be in the db
        Query query = em.createQuery(
                new StringBuilder().append("SELECT x FROM news x WHERE x.fs_id = ").append(id).toString());
        assertEquals(0, query.getResultList().size());

        // load content
        String content = getContent("src/test/resources/inbox/add/pressreleasesdetails_" + id + ".xml",
                "hibernate");
        // send content to jms broker
        template.sendBody("jms:topic:BUS_OUT", content);

        // wait
        Thread.sleep(TimeOuts.LONG);
        query = em.createQuery(
                new StringBuilder().append("SELECT x FROM news x WHERE x.fs_id = ").append(id).toString());
        assertEquals(1, query.getResultList().size());
    }
    // wait
    Thread.sleep(TimeOuts.LONG);

    assertEquals("not all items are present", size + ids.length, countArticles());

    // now send the delete command
    for (String id : ids) {
        // load content
        String content = getContent("src/test/resources/inbox/delete/pressreleasesdetails_" + id + ".xml",
                "hibernate");
        // send content to jms broker
        template.sendBody("jms:topic:BUS_OUT", content);
        // wait
        Thread.sleep(TimeOuts.LONG);

        // item should be deleted
        Query query = em.createQuery(
                new StringBuilder().append("SELECT x FROM news x WHERE x.fs_id = ").append(id).toString());
        assertEquals(0, query.getResultList().size());
    }

    assertEquals("ups, there are items left in the db", size, countArticles());

    em.close();
}

---

From source file:de.iai.ilcd.model.dao.ProcessDao.java

@SuppressWarnings("unchecked")
public List<GeographicalArea> getAllLocations() {
    EntityManager em = PersistenceUtil.getEntityManager();
    return em.createQuery("select distinct area from GeographicalArea area order by area.name").getResultList();
}

---

From source file:de.iai.ilcd.model.dao.ProcessDao.java

@SuppressWarnings("unchecked")
public List<GeographicalArea> getUsedLocations() {
    EntityManager em = PersistenceUtil.getEntityManager();
    return em.createQuery(
            "select distinct area from Process p, GeographicalArea area where p.geography.location=area.areaCode order by area.name")
            .getResultList();/*  ww  w . ja  v  a2  s.  c  o  m*/
}

---

From source file:de.iai.ilcd.model.dao.ProcessDao.java

@SuppressWarnings("unchecked")
public List<Integer> getReferenceYears() {
    EntityManager em = PersistenceUtil.getEntityManager();
    return em.createQuery(
            "select distinct p.timeInformation.referenceYear from Process p order by p.timeInformation.referenceYear asc")
            .getResultList();//w  w  w.j a v  a 2s . c  o  m
}

---

From source file:com.easyjf.core.dao.impl.GenericDAOImpl.java

public T getBy(final String propertyName, final Object value) {
    if (propertyName == null || "".equals(propertyName) || value == null)
        throw new IllegalArgumentException(I18n.getLocaleMessage(
                "ext.Call.parameter.is.not.correct.attribute.names.and.values.are.not.empty"));
    List<T> ret = (List<T>) this.getJpaTemplate().execute(new JpaCallback() {

        public Object doInJpa(EntityManager em) throws PersistenceException {
            String clazzName = clazz.getName();
            StringBuffer sb = new StringBuffer("select obj from ");
            sb.append(clazzName).append(" obj");
            Query query = null;/*  w  w w. j  a v a 2s  .c o m*/
            if (propertyName != null && value != null) {
                sb.append(" where obj.").append(propertyName).append(" = :value");
                query = em.createQuery(sb.toString()).setParameter("value", value);
            } else {
                query = em.createQuery(sb.toString());
            }
            return query.getResultList();
        }
    });
    if (ret != null && ret.size() == 1) {
        return ret.get(0);
    } else if (ret != null && ret.size() > 1) {
        throw new java.lang.IllegalStateException("worning  --more than one object find!!");
    } else {
        return null;
    }
}

---

From source file:net.echinopsii.ariane.community.plugin.rabbitmq.directory.RabbitmqDirectoryBootstrap.java

private void plugDirectoryJPAProvider() {
    Company pivotal = null;/*w  ww  .j  a  v  a 2  s. c om*/
    Application rabbitmq = null;

    directoryJpaProvider.addSubPersistenceBundle(FrameworkUtil.getBundle(RabbitmqDirectoryBootstrap.class));

    EntityManager em = directoryJpaProvider.createEM();
    CriteriaBuilder builder = em.getCriteriaBuilder();

    CriteriaQuery<Company> cmpCriteria = builder.createQuery(Company.class);
    Root<Company> cmpRoot = cmpCriteria.from(Company.class);
    cmpCriteria.select(cmpRoot).where(builder.equal(cmpRoot.<String>get("name"), "Pivotal"));
    TypedQuery<Company> cmpQuery = em.createQuery(cmpCriteria);
    try {
        pivotal = cmpQuery.getSingleResult();
        log.debug("Pivotal company already defined ...");
    } catch (NoResultException e) {
        log.debug("Pivotal company will be defined ...");
    } catch (Exception e) {
        throw e;
    }

    CriteriaQuery<Application> appCriteria = builder.createQuery(Application.class);
    Root<Application> appRoot = appCriteria.from(Application.class);
    appCriteria.select(appRoot).where(builder.equal(appRoot.<String>get("name"), "RabbitMQ"));
    TypedQuery<Application> appQuery = em.createQuery(appCriteria);
    try {
        rabbitmq = appQuery.getSingleResult();
        log.debug("RabbitMQ application already defined ...");
    } catch (NoResultException e) {
        log.debug("RabbitMQ application will be defined ...");
    } catch (Exception e) {
        throw e;
    }

    em.getTransaction().begin();

    if (pivotal == null) {
        pivotal = new Company().setNameR("Pivotal").setDescriptionR("Pivotal");
        em.persist(pivotal);
    }

    if (rabbitmq == null) {
        rabbitmq = new Application().setNameR("RabbitMQ").setCompanyR(pivotal).setShortNameR("RabbitMQ")
                .setColorCodeR("ff6600").setDescriptionR("Robust messaging for applications");
        em.persist(rabbitmq);
    }

    if (!pivotal.getApplications().contains(rabbitmq)) {
        pivotal.getApplications().add(rabbitmq);
    }

    em.flush();
    em.getTransaction().commit();
}

---

From source file:org.grails.datastore.mapping.jpa.query.JpaQuery.java

Object executeQuery(final PersistentEntity entity, final Junction criteria, EntityManager em,
        boolean singleResult) {

    JpaQueryBuilder queryBuilder = new JpaQueryBuilder(entity, criteria, projections, orderBy);
    queryBuilder.setConversionService(session.getDatastore().getMappingContext().getConversionService());
    JpaQueryInfo jpaQueryInfo = queryBuilder.buildSelect();
    List parameters = jpaQueryInfo.getParameters();
    final String queryToString = jpaQueryInfo.getQuery();

    if (LOG.isDebugEnabled()) {
        LOG.debug("Built JPQL to execute: " + queryToString);
    }/*  www .  ja v  a  2 s.  c  om*/
    final javax.persistence.Query q = em.createQuery(queryToString);

    if (parameters != null) {
        for (int i = 0, count = parameters.size(); i < count; i++) {
            q.setParameter(i + 1, parameters.get(i));
        }
    }
    q.setFirstResult(offset);
    if (max > -1) {
        q.setMaxResults(max);
    }

    if (!singleResult) {
        return q.getResultList();
    }
    return q.getSingleResult();
}

---

From source file:org.ow2.proactive.scheduling.api.graphql.fetchers.DatabaseConnectionFetcher.java

@VisibleForTesting
int getNbEntriesBeforeSlicing(EntityManager entityManager, Class<E> entityClass,
        CriteriaBuilder criteriaBuilder, Predicate[] predicates) {

    CriteriaQuery<Long> counterQuery = criteriaBuilder.createQuery(Long.class);

    CriteriaQuery<Long> select = counterQuery.select(criteriaBuilder.count(counterQuery.from(entityClass)));

    if (predicates.length > 0) {
        select.where(predicates);//from   w  ww.j  a v  a  2  s  .  com
    }

    return entityManager.createQuery(counterQuery).getSingleResult().intValue();
}

---

From source file:com.jada.admin.customAttribute.CustomAttributeGroupMaintAction.java

public ActionMessages validate(CustomAttributeGroupMaintActionForm form, String siteId) throws Exception {
    ActionMessages errors = new ActionMessages();

    boolean insertMode = false;
    if (form.getMode().equals("C")) {
        insertMode = true;//w w  w  .jav a  2 s .com
    }

    if (Format.isNullOrEmpty(form.getCustomAttribGroupName())) {
        errors.add("customAttribName", new ActionMessage("error.string.required"));
    }

    EntityManager em = JpaConnection.getInstance().getCurrentEntityManager();
    String sql = "from   CustomAttributeGroup " + "where  siteId = :siteId "
            + "and    customAttribGroupName = :customAttribGroupName ";
    if (!insertMode) {
        sql += "and   customAttribGroupId != :customAttribGroupId";
    }
    Query query = em.createQuery(sql);
    query.setParameter("siteId", siteId);
    query.setParameter("customAttribGroupName", form.getCustomAttribGroupName());
    if (!insertMode) {
        query.setParameter("customAttribGroupId", Long.valueOf(form.getCustomAttribGroupId()));
    }
    if (query.getResultList().size() > 0) {
        errors.add("customAttribGroupName", new ActionMessage("error.customAttributeGroup.exist"));
    }

    return errors;
}

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