/**
* Find all News entities with a specific property value.
*
* @param propertyName the name of the News property to query
* @param value the property value to match
* @param rowStartIdxAndCount Optional int varargs. rowStartIdxAndCount[0] specifies the the row
* index in the query result-set to begin collecting the results. rowStartIdxAndCount[1]
* specifies the the maximum number of results to return.
* @return List<News> found by query
*/
@SuppressWarnings("unchecked")
public List<News> findByProperty(
String propertyName, final Object value, final int... rowStartIdxAndCount) {
LogUtil.log(
"finding News instance with property: " + propertyName + ", value: " + value,
Level.INFO,
null);
try {
final String queryString =
"select model from News model where model." + propertyName + "= :propertyValue";
Query query = entityManager.createQuery(queryString);
query.setParameter("propertyValue", value);
if (rowStartIdxAndCount != null && rowStartIdxAndCount.length > 0) {
int rowStartIdx = Math.max(0, rowStartIdxAndCount[0]);
if (rowStartIdx > 0) {
query.setFirstResult(rowStartIdx);
}
if (rowStartIdxAndCount.length > 1) {
int rowCount = Math.max(0, rowStartIdxAndCount[1]);
if (rowCount > 0) {
query.setMaxResults(rowCount);
}
}
}
return query.getResultList();
} catch (RuntimeException re) {
LogUtil.log("find by property name failed", Level.SEVERE, re);
throw re;
}
}
/**
* Find all News entities.
*
* @param rowStartIdxAndCount Optional int varargs. rowStartIdxAndCount[0] specifies the the row
* index in the query result-set to begin collecting the results. rowStartIdxAndCount[1]
* specifies the the maximum count of results to return.
* @return List<News> all News entities
*/
@SuppressWarnings("unchecked")
public List<News> findAll(final int... rowStartIdxAndCount) {
LogUtil.log("finding all News instances", Level.INFO, null);
try {
final String queryString = "select model from News model";
Query query = entityManager.createQuery(queryString);
if (rowStartIdxAndCount != null && rowStartIdxAndCount.length > 0) {
int rowStartIdx = Math.max(0, rowStartIdxAndCount[0]);
if (rowStartIdx > 0) {
query.setFirstResult(rowStartIdx);
}
if (rowStartIdxAndCount.length > 1) {
int rowCount = Math.max(0, rowStartIdxAndCount[1]);
if (rowCount > 0) {
query.setMaxResults(rowCount);
}
}
}
return query.getResultList();
} catch (RuntimeException re) {
LogUtil.log("find all failed", Level.SEVERE, re);
throw re;
}
}
/**
* Perform an initial save of a previously unsaved News entity. All subsequent persist actions of
* this entity should use the #update() method.
*
* @param entity News entity to persist
* @throws RuntimeException when the operation fails
*/
public void save(News entity) {
LogUtil.log("saving News instance", Level.INFO, null);
try {
entityManager.persist(entity);
LogUtil.log("save successful", Level.INFO, null);
} catch (RuntimeException re) {
LogUtil.log("save failed", Level.SEVERE, re);
throw re;
}
}
public News findById(Integer id) {
LogUtil.log("finding News instance with id: " + id, Level.INFO, null);
try {
News instance = entityManager.find(News.class, id);
return instance;
} catch (RuntimeException re) {
LogUtil.log("find failed", Level.SEVERE, re);
throw re;
}
}
public UserCart findById(UserCartId id) {
LogUtil.log("finding UserCart instance with id: " + id, Level.INFO, null);
try {
UserCart instance = entityManager.find(UserCart.class, id);
return instance;
} catch (RuntimeException re) {
LogUtil.log("find failed", Level.SEVERE, re);
throw re;
}
}
/**
* Persist a previously saved News entity and return it or a copy of it to the sender. A copy of
* the News entity parameter is returned when the JPA persistence mechanism has not previously
* been tracking the updated entity.
*
* @param entity News entity to update
* @returns News the persisted News entity instance, may not be the same
* @throws RuntimeException if the operation fails
*/
public News update(News entity) {
LogUtil.log("updating News instance", Level.INFO, null);
try {
News result = entityManager.merge(entity);
LogUtil.log("update successful", Level.INFO, null);
return result;
} catch (RuntimeException re) {
LogUtil.log("update failed", Level.SEVERE, re);
throw re;
}
}
/**
* Delete a persistent News entity.
*
* @param entity News entity to delete
* @throws RuntimeException when the operation fails
*/
public void delete(News entity) {
LogUtil.log("deleting News instance", Level.INFO, null);
try {
entity = entityManager.getReference(News.class, entity.getId());
entityManager.remove(entity);
LogUtil.log("delete successful", Level.INFO, null);
} catch (RuntimeException re) {
LogUtil.log("delete failed", Level.SEVERE, re);
throw re;
}
}