CODEWITHSUNDEEP
javaspringhibernate
P_M
P_M

Reputation: 2952

Hibernate pass POJO object as parameter, and use it's properties. Is it possible?

I tried to pass POJO as hibernate parameter, but it crashes with Exception, I actually not understand. I tried to find why and not get anything clear. Is it possible to use POJO fields, in where condition?

Here query with its parameter description:

@Query("select jc "
        + "from JobChron jc "
        + "where "
        + "jc.state=:catalogPage.state and "
        + "jc.city=:catalogPage.city and "
        + "jc.vertical=:catalogPage.vertical "
        )
LinkedList<JobChron> selectOpen(
        @Param("catalogPage") CatalogPage catalogPage);

The root exception I see is:

Caused by: java.lang.NullPointerException
    at org.hibernate.hql.internal.ast.HqlSqlWalker.lookupProperty(HqlSqlWalker.java:598)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.addrExpr(HqlSqlBaseWalker.java:4980)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.expr(HqlSqlBaseWalker.java:1263)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.exprOrSubquery(HqlSqlBaseWalker.java:4686)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.comparisonExpr(HqlSqlBaseWalker.java:4159)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:2104)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:2029)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:2029)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.whereClause(HqlSqlBaseWalker.java:796)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:597)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:301)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:249)
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:278)
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:206)
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:158)
    at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:131)
    at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:93)
    at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:167)
    at org.hibernate.internal.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:301)
    at org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:236)
    at org.hibernate.internal.SessionImpl.createQuery(SessionImpl.java:1836)
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:328)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:344)
    at com.sun.proxy.$Proxy67.createQuery(Unknown Source)
    at org.springframework.data.jpa.repository.query.SimpleJpaQuery.validateQuery(SimpleJpaQuery.java:86)
    ... 118 more

Upvotes: 4

Views: 4848

Answers (1)

Alexander
Alexander

Reputation: 2898

In case you are using @org.springframework.data.repository.query.Query and @Param from Spring Data: it is not implemented.

Your parameter name "catalogPage" and parameter value catalogPage eventually go as is to org.hibernate.jpa.internal.QueryImpl.bindValue(catalogPage) -> org.hibernate.internal.AbstractQueryImpl.setParameter("catalogPage", catalogPage) which eventually goes to simple text replacement in AbstractQueryImpl.expandParameterList(...). No parameter pre-processing that support the required feature.

Update: there is a way to do this, via Spring EL! See https://spring.io/blog/2014/07/15/spel-support-in-spring-data-jpa-query-definitions

Upvotes: 5

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