Example usage for javax.persistence EntityManager getEntityManagerFactory

Introduction

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

Prototype

public EntityManagerFactory getEntityManagerFactory();

Source Link

Document

Return the entity manager factory for the entity manager.

Usage

From source file:cn.guoyukun.spring.jpa.repository.hibernate.HibernateUtils.java

/**
 * ? jpa EntityManager ?hibernate Cache API
 *
 * @param em//from   www  .jav  a  2  s .co m
 * @return
 * @see #getCache(javax.persistence.EntityManagerFactory)
 */
public static Cache getCache(EntityManager em) {
    return getCache(em.getEntityManagerFactory());
}

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From source file:cn.guoyukun.spring.jpa.repository.hibernate.HibernateUtils.java

/**
 * ?jpa EntityManager /*from   www .  ja v  a2 s  .  c  o  m*/
 *
 * @param em
 * @see #evictLevel2Cache(javax.persistence.EntityManagerFactory)
 */
public static void evictLevel2Cache(EntityManager em) {
    evictLevel2Cache(em.getEntityManagerFactory());
}

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From source file:cn.guoyukun.spring.jpa.repository.hibernate.HibernateUtils.java

/**
 * ?jpa EntityManager ? hibernate SessionFactory API
 *
 * @param em//from www . j a v  a2  s .c o m
 * @return
 * @see #getSessionFactory(javax.persistence.EntityManagerFactory)
 */
public static SessionFactory getSessionFactory(EntityManager em) {
    return getSessionFactory(em.getEntityManagerFactory());
}

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From source file:com.impetus.kundera.rest.common.EntityUtils.java

/**
 * @param entityClassName//from ww  w .j  ava2 s  . c  o m
 * @param em
 * @return
 */
public static Class<?> getEntityClass(String entityClassName, EntityManager em) {
    MetamodelImpl metamodel = (MetamodelImpl) em.getEntityManagerFactory().getMetamodel();
    Class<?> entityClass = metamodel.getEntityClass(entityClassName);
    return entityClass;
}

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From source file:com.impetus.kundera.rest.common.EntityUtils.java

/**
 * @param entityClassName/* w  ww .  j av a 2 s.c om*/
 * @param em
 * @return
 */
public static EntityMetadata getEntityMetaData(String entityClassName, EntityManager em) {
    MetamodelImpl metamodel = (MetamodelImpl) em.getEntityManagerFactory().getMetamodel();
    Class<?> entityClass = metamodel.getEntityClass(entityClassName);

    return metamodel.getEntityMetadata(entityClass);
}

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From source file:com.impetus.kundera.rest.common.EntityUtils.java

/**
 * @param entityClassName/*from   w  w  w  .  ja va2s.c o  m*/
 * @param em
 * @return
 */
public static AbstractManagedType getEntityManagedType(String entityClassName, EntityManager em) {
    MetamodelImpl metamodel = (MetamodelImpl) em.getEntityManagerFactory().getMetamodel();
    Class<?> entityClass = metamodel.getEntityClass(entityClassName);
    EntityMetadata entityMetadata = metamodel.getEntityMetadata(entityClass);
    AbstractManagedType managedType = (AbstractManagedType) metamodel.entity(entityMetadata.getEntityClazz());
    return managedType;
}

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From source file:com.impetus.kundera.rest.common.EntityUtils.java

/**
 * @param queryString//w  w  w  . ja  v a  2s  . c om
 * @param q
 * @param em
 */
public static void setObjectQueryParameters(String queryString, String parameterString, Query q,
        EntityManager em, String mediaType) {
    MetamodelImpl metamodel = (MetamodelImpl) em.getEntityManagerFactory().getMetamodel();

    if (parameterString == null || parameterString.isEmpty()) {
        return;
    }

    Map<String, String> paramsMap = new HashMap<String, String>();
    ObjectMapper mapper = new ObjectMapper();

    try {
        paramsMap = mapper.readValue(parameterString, new TypeReference<HashMap<String, String>>() {
        });
        KunderaQuery kq = ((QueryImpl) q).getKunderaQuery();
        Set<Parameter<?>> parameters = kq.getParameters();
        for (String paramName : paramsMap.keySet()) {
            String value = paramsMap.get(paramName);

            if (paramName.equalsIgnoreCase("firstResult")) {
                q.setFirstResult(Integer.parseInt(value));

            } else if (paramName.equalsIgnoreCase("maxResult")) {
                q.setMaxResults(Integer.parseInt(value));

            } else if (StringUtils.isNumeric(paramName)) {
                for (Parameter param : parameters) {
                    if (param.getPosition() == Integer.parseInt(paramName)) {

                        Class<?> paramClass = param.getParameterType();
                        Object paramValue = null;
                        if (metamodel.isEmbeddable(paramClass)) {
                            paramValue = JAXBUtils.toObject(StreamUtils.toInputStream(value), paramClass,
                                    mediaType);

                        } else {
                            PropertyAccessor accessor = PropertyAccessorFactory.getPropertyAccessor(paramClass);
                            paramValue = accessor.fromString(paramClass, value);
                        }

                        q.setParameter(Integer.parseInt(paramName), paramValue);
                        break;
                    }
                }
            } else {
                for (Parameter param : parameters) {
                    if (param.getName().equals(paramName)) {

                        Class<?> paramClass = param.getParameterType();
                        Object paramValue = null;

                        if (metamodel.isEmbeddable(paramClass)) {
                            paramValue = JAXBUtils.toObject(StreamUtils.toInputStream(value), paramClass,
                                    mediaType);

                        } else {
                            PropertyAccessor accessor = PropertyAccessorFactory.getPropertyAccessor(paramClass);
                            paramValue = accessor.fromString(paramClass, value);
                        }
                        q.setParameter(paramName, paramValue);
                        break;
                    }
                }

            }
        }

    } catch (JsonParseException e) {
        log.error(e.getMessage());
    } catch (JsonMappingException e) {
        log.error(e.getMessage());
    } catch (IOException e) {
        log.error(e.getMessage());
    }
}

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From source file:org.jdal.dao.jpa.JpaUtils.java

/** 
 * Initialize entity attribute/*from   w ww  . jav a 2  s .c  o m*/
 * @param em
 * @param entity
 * @param a
 * @param depth
 */
@SuppressWarnings("rawtypes")
private static void intialize(EntityManager em, Object entity, Object attached, Attribute a, int depth) {
    Object value = PropertyAccessorFactory.forDirectFieldAccess(attached).getPropertyValue(a.getName());
    if (!em.getEntityManagerFactory().getPersistenceUnitUtil().isLoaded(value)) {
        em.refresh(value);
    }

    PropertyAccessorFactory.forDirectFieldAccess(entity).setPropertyValue(a.getName(), value);

    initialize(em, value, depth - 1);
}

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From source file:org.jdal.dao.jpa.JpaUtils.java

/**
 * Initialize a entity. //from  w  ww . j a va  2  s  .c om
 * @param em entity manager to use
 * @param entity entity to initialize
 * @param depth max depth on recursion
 */
@SuppressWarnings({ "rawtypes", "unchecked" })
public static void initialize(EntityManager em, Object entity, int depth) {
    // return on nulls, depth = 0 or already initialized objects
    if (entity == null || depth == 0) {
        return;
    }

    PersistenceUnitUtil unitUtil = em.getEntityManagerFactory().getPersistenceUnitUtil();
    EntityType entityType = em.getMetamodel().entity(entity.getClass());
    Set<Attribute> attributes = entityType.getDeclaredAttributes();

    Object id = unitUtil.getIdentifier(entity);

    if (id != null) {
        Object attached = em.find(entity.getClass(), unitUtil.getIdentifier(entity));

        for (Attribute a : attributes) {
            if (!unitUtil.isLoaded(entity, a.getName())) {
                if (a.isCollection()) {
                    intializeCollection(em, entity, attached, a, depth);
                } else if (a.isAssociation()) {
                    intialize(em, entity, attached, a, depth);
                }
            }
        }
    }
}

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From source file:com.seer.datacruncher.utils.generic.CommonUtils.java

/**
 * Checks whether current persistence unit is SQL SERVER (MS SQL).
 * // www.  java2 s .c  o  m
 * @param em
 * @return
 */
public synchronized static boolean isMsSql(EntityManager em) {
    return em == null ? false
            : em.getEntityManagerFactory() == null ? false
                    : em.getEntityManagerFactory().getProperties()
                            .get("hibernate.connection.driver_class") == null
                                    ? false
                                    : !em.getEntityManagerFactory().getProperties()
                                            .get("hibernate.connection.driver_class")
                                            .equals("net.sourceforge.jtds.jdbc.Driver") ? false : true;
}

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