Java QueryHints类代码示例

本文整理汇总了Java中org.hibernate.annotations.QueryHints类的典型用法代码示例。如果您正苦于以下问题：Java QueryHints类的具体用法？Java QueryHints怎么用？Java QueryHints使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

QueryHints类属于org.hibernate.annotations包，在下文中一共展示了QueryHints类的12个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: queryLatestGreetings

import org.hibernate.annotations.QueryHints; //导入依赖的package包/类
@GET
@Path("greetings/latest")
@Produces(MediaType.TEXT_PLAIN)
public Response queryLatestGreetings(@QueryParam("maxResults") int maxResults) {

    EntityManager em = Hibernate.createEntityManager();
    try {
        final List<Tuple> greetings = em
                .createQuery("SELECT g.id, g.date, g.author.name, g.content FROM Greeting g ORDER by g.date DESC", Tuple.class)
                .setHint(QueryHints.READ_ONLY, "true")
                .setMaxResults(maxResults == 0 ? 500 : maxResults)
                .getResultList();
        em.close();


        return RequestStats.wrap(Response.ok(toString(greetings)));
        
    } catch (QueryTimeoutException e) {
        LOGGER.severe("Caught QueryTimeoutException");
        
        return Response.status(Response.Status.SERVICE_UNAVAILABLE).build();
    }
}

开发者ID:bedatadriven，项目名称:appengine-hibernate，代码行数:24，代码来源:TestResources.java

示例2: getCacheMode

import org.hibernate.annotations.QueryHints; //导入依赖的package包/类
public CacheMode getCacheMode(String query) {
	String hitName = QueryHints.CACHE_MODE;
	String value =(String) hintsMap.get( hitName );
	if ( value == null ) {
		return null;
	}
	try {
		return CacheMode.interpretExternalSetting( value );
	}
	catch ( MappingException e ) {
		throw new AnnotationException( "Unknown CacheMode in hint: " + query + ":" + hitName, e );
	}
}

开发者ID:lamsfoundation，项目名称:lams，代码行数:14，代码来源:QueryHintDefinition.java

示例3: getFlushMode

import org.hibernate.annotations.QueryHints; //导入依赖的package包/类
public FlushMode getFlushMode(String query) {
	String hitName = QueryHints.FLUSH_MODE;
	String value =(String)  hintsMap.get( hitName );
	if ( value == null ) {
		return null;
	}
	try {
		return FlushMode.interpretExternalSetting( value );
	}
	catch ( MappingException e ) {
		throw new AnnotationException( "Unknown FlushMode in hint: " + query + ":" + hitName, e );
	}
}

开发者ID:lamsfoundation，项目名称:lams，代码行数:14，代码来源:QueryHintDefinition.java

示例4: getTimeout

import org.hibernate.annotations.QueryHints; //导入依赖的package包/类
public Integer getTimeout(String queryName) {
	Integer timeout = getInteger( queryName, QueryHints.TIMEOUT_JPA );

	if ( timeout != null ) {
		// convert milliseconds to seconds
		timeout = (int) Math.round( timeout.doubleValue() / 1000.0 );
	}
	else {
		// timeout is already in seconds
		timeout = getInteger( queryName, QueryHints.TIMEOUT_HIBERNATE );
	}
	return timeout;
}

开发者ID:lamsfoundation，项目名称:lams，代码行数:14，代码来源:QueryHintDefinition.java

示例5: bindQuery

import org.hibernate.annotations.QueryHints; //导入依赖的package包/类
public static void bindQuery(NamedQuery queryAnn, Mappings mappings, boolean isDefault) {
	if ( queryAnn == null ) return;
	if ( BinderHelper.isEmptyAnnotationValue( queryAnn.name() ) ) {
		throw new AnnotationException( "A named query must have a name when used in class or package level" );
	}
	//EJBQL Query
	QueryHintDefinition hints = new QueryHintDefinition( queryAnn.hints() );
	String queryName = queryAnn.query();
	NamedQueryDefinition queryDefinition = new NamedQueryDefinitionBuilder( queryAnn.name() )
			.setLockOptions( hints.determineLockOptions( queryAnn ) )
			.setQuery( queryName )
			.setCacheable( hints.getBoolean( queryName, QueryHints.CACHEABLE ) )
			.setCacheRegion( hints.getString( queryName, QueryHints.CACHE_REGION ) )
			.setTimeout( hints.getTimeout( queryName ) )
			.setFetchSize( hints.getInteger( queryName, QueryHints.FETCH_SIZE ) )
			.setFlushMode( hints.getFlushMode( queryName ) )
			.setCacheMode( hints.getCacheMode( queryName ) )
			.setReadOnly( hints.getBoolean( queryName, QueryHints.READ_ONLY ) )
			.setComment( hints.getString( queryName, QueryHints.COMMENT ) )
			.setParameterTypes( null )
			.createNamedQueryDefinition();

	if ( isDefault ) {
		mappings.addDefaultQuery( queryDefinition.getName(), queryDefinition );
	}
	else {
		mappings.addQuery( queryDefinition.getName(), queryDefinition );
	}
	if ( LOG.isDebugEnabled() ) {
		LOG.debugf( "Binding named query: %s => %s", queryDefinition.getName(), queryDefinition.getQueryString() );
	}
}

开发者ID:lamsfoundation，项目名称:lams，代码行数:33，代码来源:QueryBinder.java

示例6: getTimeout

import org.hibernate.annotations.QueryHints; //导入依赖的package包/类
private static Integer getTimeout(AnnotationInstance[] hints, String query) {
	Integer timeout = getInteger( hints, QueryHints.TIMEOUT_JPA, query );
	if ( timeout == null ) {
		return getInteger( hints, QueryHints.TIMEOUT_HIBERNATE, query ); // timeout is already in seconds
	}
	return ( ( timeout + 500 ) / 1000 ); // convert milliseconds to seconds (rounded)
}

开发者ID:lamsfoundation，项目名称:lams，代码行数:8，代码来源:QueryBinder.java

示例7: getReferences

import org.hibernate.annotations.QueryHints; //导入依赖的package包/类
@Override
public Collection<MCRCategLinkReference> getReferences(String type) {
    EntityManager em = MCREntityManagerProvider.getCurrentEntityManager();
    CriteriaBuilder cb = em.getCriteriaBuilder();
    CriteriaQuery<MCRCategLinkReference> query = cb.createQuery(MCRCategLinkReference.class);
    Root<MCRCategoryLinkImpl> li = query.from(LINK_CLASS);
    Path<MCRCategLinkReference> objectReferencePath = li.get(MCRCategoryLinkImpl_.objectReference);
    return em
        .createQuery(
            query.select(objectReferencePath)
                .where(cb.equal(objectReferencePath.get(MCRCategLinkReference_.type), type)))
        .setHint(QueryHints.READ_ONLY, "true")
        .getResultList();
}

开发者ID:MyCoRe-Org，项目名称:mycore，代码行数:15，代码来源:MCRCategLinkServiceImpl.java

示例8: getTypes

import org.hibernate.annotations.QueryHints; //导入依赖的package包/类
@Override
public Collection<String> getTypes() {
    EntityManager em = MCREntityManagerProvider.getCurrentEntityManager();
    CriteriaBuilder cb = em.getCriteriaBuilder();
    CriteriaQuery<String> query = cb.createQuery(String.class);
    Root<MCRCategoryLinkImpl> li = query.from(LINK_CLASS);
    return em
        .createQuery(
            query
                .distinct(true)
                .select(li.get(MCRCategoryLinkImpl_.objectReference).get(MCRCategLinkReference_.type)))
        .setHint(QueryHints.READ_ONLY, "true")
        .getResultList();
}

开发者ID:MyCoRe-Org，项目名称:mycore，代码行数:15，代码来源:MCRCategLinkServiceImpl.java

示例9: getLinks

import org.hibernate.annotations.QueryHints; //导入依赖的package包/类
@Override
public Collection<MCRCategoryLink> getLinks(String type) {
    EntityManager em = MCREntityManagerProvider.getCurrentEntityManager();
    CriteriaBuilder cb = em.getCriteriaBuilder();
    CriteriaQuery<MCRCategoryLink> query = cb.createQuery(MCRCategoryLink.class);
    Root<MCRCategoryLinkImpl> li = query.from(LINK_CLASS);
    return em
        .createQuery(
            query
                .where(
                    cb.equal(li.get(MCRCategoryLinkImpl_.objectReference).get(MCRCategLinkReference_.type), type)))
        .setHint(QueryHints.READ_ONLY, "true")
        .getResultList();
}

开发者ID:MyCoRe-Org，项目名称:mycore，代码行数:15，代码来源:MCRCategLinkServiceImpl.java

示例10: queryGreetings

import org.hibernate.annotations.QueryHints; //导入依赖的package包/类
@GET
@Path("greetings")
@Produces(MediaType.TEXT_PLAIN)
public Response queryGreetings(@QueryParam("maxResults") int maxResults) {
    EntityManager em = Hibernate.createEntityManager();
    final List<Tuple> greetings = em
            .createQuery("SELECT g.id, g.date, g.author.name, g.content FROM Greeting g ", Tuple.class)
            .setHint(QueryHints.READ_ONLY, "true")
            .setMaxResults(maxResults == 0 ? 500 : maxResults)
            .getResultList();
    em.close();
    
    return RequestStats.wrap(Response.ok(toString(greetings)));
}

开发者ID:bedatadriven，项目名称:appengine-hibernate，代码行数:15，代码来源:TestResources.java

示例11: getById

import org.hibernate.annotations.QueryHints; //导入依赖的package包/类
@Override
@Transactional(readOnly = true)
public T getById(ID id)
{
	if (id == null)
		throw new IllegalArgumentException("Must supply an id to retrieve!");

	Map<String, Object> hints = Collections.singletonMap(QueryHints.FETCHGRAPH, getQEntity().getDefaultGraph(getSession()));

	return getSession().find(clazz, id, hints);
}

开发者ID:petergeneric，项目名称:stdlib，代码行数:12，代码来源:HibernateDao.java

示例12: bindNamedQuery

import org.hibernate.annotations.QueryHints; //导入依赖的package包/类
/**
 * Binds {@link javax.persistence.NamedQuery} as well as {@link org.hibernate.annotations.NamedQuery}.
 *
 * @param metadata the current metadata
 * @param annotation the named query annotation
 */
private static void bindNamedQuery(MetadataImplementor metadata, AnnotationInstance annotation) {
	String name = JandexHelper.getValue( annotation, "name", String.class );
	if ( StringHelper.isEmpty( name ) ) {
		throw new AnnotationException( "A named query must have a name when used in class or package level" );
	}

	String query = JandexHelper.getValue( annotation, "query", String.class );

	AnnotationInstance[] hints = JandexHelper.getValue( annotation, "hints", AnnotationInstance[].class );

	String cacheRegion = getString( hints, QueryHints.CACHE_REGION );
	if ( StringHelper.isEmpty( cacheRegion ) ) {
		cacheRegion = null;
	}

	Integer timeout = getTimeout( hints, query );
	if ( timeout != null && timeout < 0 ) {
		timeout = null;
	}

	Integer fetchSize = getInteger( hints, QueryHints.FETCH_SIZE, name );
	if ( fetchSize != null && fetchSize < 0 ) {
		fetchSize = null;
	}

	String comment = getString( hints, QueryHints.COMMENT );
	if ( StringHelper.isEmpty( comment ) ) {
		comment = null;
	}

	metadata.addNamedQuery(
			new NamedQueryDefinitionBuilder().setName( name ).setQuery( query ).setCacheable(
					getBoolean(
							hints,
							QueryHints.CACHEABLE,
							name
					)
			).setCacheRegion( cacheRegion ).setTimeout( timeout ).setFetchSize( fetchSize ).setFlushMode(
					getFlushMode( hints, QueryHints.FLUSH_MODE, name )
			).setCacheMode( getCacheMode( hints, QueryHints.CACHE_MODE, name ) ).setReadOnly(
					getBoolean(
							hints,
							QueryHints.READ_ONLY,
							name
					)
			).setComment( comment ).setParameterTypes( null ).createNamedQueryDefinition()
	);
	LOG.debugf( "Binding named query: %s => %s", name, query );
}

开发者ID:lamsfoundation，项目名称:lams，代码行数:56，代码来源:QueryBinder.java

注：本文中的org.hibernate.annotations.QueryHints类示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。