CODEWITHSUNDEEP
javahibernate
dannail
dannail

Reputation: 455

HibernateQueryException: Unable to locate class

In the hbm.xml, after an enhancement, I have 2 mapping entry for the class ABC, both are mapped to the table ABC_TABLE

<class entity-name="ABC" name="model.ABC" table="ABC_TABLE">
<!-- property tags and id tag -->
</class>

<class entity-name="LazyABC" name="model.ABC" table="ABC_TABLE">
<!-- property tags and id tag -->
</class>

Before the enhancement, the hbm.xml only have the entity-name="ABC" mapping for the ABC class.

After such enhancement, the original HQL query code 

select new ABC(a.abcId, a.abcContent, a.abcEnding) from ABC a where....

throws exception when executed.

The exception is 

org.springframework.orm.hibernate3.HibernateQueryException: Unable to locate class [ABC]

caused by

org.hibernate.hql.ast.QuerySyntaxException: Unable to locate class [ABC]

Then I found solution on internet, just to change the ABC constructor name to full path of the class, like

select new model.ABC(a.abcId, a.abcContent, a.abcEnding) from ABC a where....

Then the problem is fixed and no exception is thrown in executing the query!

But, I just don't know why the hibernate handling is like that.

Can somebody tell me the underlying reason why it would be the solution?

Thanks. :)

Upvotes: 0

Views: 1932

Answers (1)

Viswanath Lekshmanan
Viswanath Lekshmanan

Reputation: 10083

First of all if you need object based results. Use Criteria API.

You may have a valid import for ABC class. But HQL doesn't know the package name of the class, Because it is String. So you should provide the complete path including package name.

Upvotes: 1

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