Examples with ResultTransformer org.hibernate.transform.ResultTransformer used on opensource projects

Example 1 with ResultTransformer

use of org.hibernate.transform.ResultTransformer in project hibernate-orm by hibernate.

the class QueryKeyTest method doResultTransformerTest.

// Reproduces HHH-5628; commented out because FailureExpected is not working here...
/*
	public void testAliasToBeanConstructorFailureExpected() throws Exception {
		// AliasToBeanConstructorResultTransformer is not Serializable because
		// java.lang.reflect.Constructor is not Serializable;
		doResultTransformerTest(
				new AliasToBeanConstructorResultTransformer( AClass.class.getConstructor( String.class ) ), false
		);
	}
	*/
private void doResultTransformerTest(ResultTransformer transformer, boolean isSingleton) {
    Map transformerMap = new HashMap();
    transformerMap.put(transformer, "");
    assert transformerMap.size() == 1 : "really messed up";
    Object old = transformerMap.put(transformer, "value");
    assert old != null && transformerMap.size() == 1 : "apparent QueryKey equals/hashCode issue";
    // finally, lets serialize it and see what happens
    ResultTransformer transformer2 = (ResultTransformer) SerializationHelper.clone(transformer);
    old = transformerMap.put(transformer2, "new value");
    assert old != null && transformerMap.size() == 1 : "deserialization did not set hashCode or equals properly";
    if (isSingleton) {
        assert transformer == transformer2 : "deserialization issue for singleton transformer";
    } else {
        assert transformer != transformer2 : "deserialization issue for non-singleton transformer";
    }
    assert transformer.equals(transformer2) : "deep copy issue";
}

Example 2 with ResultTransformer

use of org.hibernate.transform.ResultTransformer in project hibernate-orm by hibernate.

the class Loader method listUsingQueryCache.

private List listUsingQueryCache(final SharedSessionContractImplementor session, final QueryParameters queryParameters, final Set<Serializable> querySpaces, final Type[] resultTypes) {
    QueryResultsCache queryCache = factory.getCache().getQueryResultsCache(queryParameters.getCacheRegion());
    QueryKey key = generateQueryKey(session, queryParameters);
    if (querySpaces == null || querySpaces.size() == 0) {
        LOG.tracev("Unexpected querySpaces is {0}", (querySpaces == null ? querySpaces : "empty"));
    } else {
        LOG.tracev("querySpaces is {0}", querySpaces);
    }
    List result = getResultFromQueryCache(session, queryParameters, querySpaces, resultTypes, queryCache, key);
    if (result == null) {
        result = doList(session, queryParameters, key.getResultTransformer());
        putResultInQueryCache(session, queryParameters, resultTypes, queryCache, key, result);
    }
    ResultTransformer resolvedTransformer = resolveResultTransformer(queryParameters.getResultTransformer());
    if (resolvedTransformer != null) {
        result = (areResultSetRowsTransformedImmediately() ? key.getResultTransformer().retransformResults(result, getResultRowAliases(), queryParameters.getResultTransformer(), includeInResultRow()) : key.getResultTransformer().untransformToTuples(result));
    }
    return getResultList(result, queryParameters.getResultTransformer());
}

Example 3 with ResultTransformer

use of org.hibernate.transform.ResultTransformer in project hibernate-orm by hibernate.

the class CustomLoader method scroll.

public ScrollableResultsImplementor scroll(final QueryParameters queryParameters, final SharedSessionContractImplementor session) throws HibernateException {
    ResultTransformer resultTransformer = queryParameters.getResultTransformer();
    HolderInstantiator holderInstantiator = (resultTransformer == null) ? HolderInstantiator.NOOP_INSTANTIATOR : new HolderInstantiator(resultTransformer, this::getReturnAliasesForTransformer);
    return scroll(queryParameters, resultTypes, holderInstantiator, session);
}

Example 4 with ResultTransformer

use of org.hibernate.transform.ResultTransformer in project candlepin by candlepin.

the class AbstractHibernateCurator method listByCriteria.

@SuppressWarnings("unchecked")
@Transactional
public Page<List<E>> listByCriteria(Criteria c, PageRequest pageRequest) {
    Page<List<E>> page = new Page<>();
    if (pageRequest != null) {
        // see https://forum.hibernate.org/viewtopic.php?t=974802
        // Save original Projection and ResultTransformer
        CriteriaImpl cImpl = (CriteriaImpl) c;
        Projection origProjection = cImpl.getProjection();
        ResultTransformer origRt = cImpl.getResultTransformer();
        // Get total number of records by setting a rowCount projection
        page.setMaxRecords(findRowCount(c));
        // Restore original Projection and ResultTransformer
        c.setProjection(origProjection);
        c.setResultTransformer(origRt);
        page.setPageData(loadPageData(c, pageRequest));
        page.setPageRequest(pageRequest);
    } else {
        List<E> pageData = listByCriteria(c);
        page.setMaxRecords(pageData.size());
        page.setPageData(pageData);
    }
    return page;
}

Example 5 with ResultTransformer

use of org.hibernate.transform.ResultTransformer in project ngtesting-platform by aaronchen2k.

the class BaseDaoImpl method findPage.

@Override
public Page findPage(DetachedCriteria dc, int start, int limit) {
    Criteria c = dc.getExecutableCriteria(getSession());
    CriteriaImpl impl = (CriteriaImpl) c;
    Projection projection = impl.getProjection();
    ResultTransformer transformer = impl.getResultTransformer();
    List<CriteriaImpl.OrderEntry> orderEntries = (List<CriteriaImpl.OrderEntry>) ReflectionUtils.getFieldValue(impl, "orderEntries");
    ReflectionUtils.setFieldValue(impl, "orderEntries", new ArrayList<CriteriaImpl.OrderEntry>());
    // 执行Count查询
    c.setResultTransformer(CriteriaImpl.DISTINCT_ROOT_ENTITY);
    long total = (Long) c.setProjection(Projections.countDistinct("id")).uniqueResult();
    // 将之前的Projection和OrderBy条件重新设回去
    c.setProjection(projection);
    c.setResultTransformer(transformer);
    ReflectionUtils.setFieldValue(impl, "orderEntries", orderEntries);
    c.setFirstResult(start);
    c.setMaxResults(limit);
    List list = c.list();
    return new Page(start, limit, Integer.parseInt(String.valueOf(total)), (list == null ? new ArrayList() : list));
}