问题描述
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我放弃了,问社区...
在我的项目中,我使用的是Hibernate 3.6.4.Final和自定义的sql方言:
public class ServiceAppMysqL5InnoDBDialect extends MysqL5InnoDBDialect {
public ServiceAppMysqL5InnoDBDialect() {
super();
registerFunction(\"bitwise_and\",new sqlFunctionTemplate(StandardBasicTypes.INTEGER,\"(?1 & ?2)\"));
registerFunction(\"hasflags\",new sqlFunctionTemplate(StandardBasicTypes.BOOLEAN,\"?1 & ?2 = ?2\"));
}
}
在HQL查询中使用hasflags
方法失败。
这是查询:
Query q = em
.createquery(
\"SELECT o FROM \"
+ entityClass.getName()
+ \" o WHERE hasflags(o.status,:status) AND o.email = :email\")
.setParameter(\"email\",username)
.setParameter(\"status\",status.getBitmask());
错误:
Caused by: org.hibernate.hql.ast.QuerySyntaxException: unexpected AST node: ( near line 1,column 50 [SELECT o FROM tv.px.domain.Owner o WHERE hasflags(o.status,:status) AND o.email = :email]
at org.hibernate.hql.ast.QuerySyntaxException.convert(QuerySyntaxException.java:54)
at org.hibernate.hql.ast.QuerySyntaxException.convert(QuerySyntaxException.java:47)
at org.hibernate.hql.ast.ErrorCounter.throwQueryException(ErrorCounter.java:82)
at org.hibernate.hql.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:261)
at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:185)
at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:136)
at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:101)
at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:80)
at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:124)
at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:156)
at org.hibernate.impl.AbstractSessionImpl.createquery(AbstractSessionImpl.java:135)
at org.hibernate.impl.SessionImpl.createquery(SessionImpl.java:1770)
at org.hibernate.ejb.AbstractEntityManagerImpl.createquery(AbstractEntityManagerImpl.java:272)
因此,似乎该功能未正确注册。我已经使用较旧的Hibernate版本完成了几次,并且一直都以这种方式工作。
以防万一有人问:是的,我将Hibernate配置为使用方言:
<persistence-unit name=\"persistenceUnit\"
transaction-type=\"RESOURCE_LOCAL\">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties>
<property name=\"hibernate.dialect\" value=\"tv.px.persistence.hibernate.ServiceAppMysqL5InnoDBDialect\" />
<!-- and so on -->
</properties>
</persistence-unit>
编辑:在SELECT子句中,我可以使用已注册的函数而不会出现问题,但不能在WHERE子句中使用。
解决方法
我有一个类似的问题。如果将where子句修改为:
hasflags(o.status,:status) = true
我需要它在没有它的情况下工作,而对它的搜索将我带到了这里。