6:59 p.m.
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-5225?page=c...
]
Gail Badner resolved HHH-5225.
------------------------------
Resolution: Fixed
Fixed in trunk and Branch_3_5.
This is kind of complicated, but here is how it works...
Hibernate will interpret order-by="current_date" as follows:
1) if current_date is NOT registered as a function with the dialect, then Hibernate will
assume current_date refers to a column name;
2) if current_date is registered as a function that must be followed by parentheses
(SQLFunction.hasParenthesesIfNoArguments() == true), then Hibernate will assume
current_date refers to a column (since the order-by fragment does not have
"()")
3) if current_date is registered as a function without parentheses (i.e.,
SQLFunction.hasParenthesesIfNoArguments() == false), then Hibernate will assume
current_date refers to the no-arg function, not a column.
If the fragment is order-by="`current_date`" (i.e., back-quotes surround the
string), then Hibernate will assume that it refers to a column, even if a function with
the same name is registered. You can use back-quotes to override 3).
Cannot parse order-by fragment if it contains a registered function
without parentheses
---------------------------------------------------------------------------------------
Key: HHH-5225
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5225
Project: Hibernate Core
Issue Type: Bug
Affects Versions: 3.5.1, 3.5.2, 3.6.0.Beta2
Environment: Hibernate 3.5.1-Final
MySQL 5.0
Spring 2.5
Reporter: Vladimir Kobetic
Assignee: Gail Badner
Priority: Critical
Fix For: 3.6.0.Beta4, 3.5.6
Attachments: TestOrderBy.tgz
When upgrading from Hibernate 3.2.5.ga to the newest Hibernate 3.5.1-Final with the
newest build-with dependent libraries an error occurs during initial phase of launching
application.
I tried to build and run with all libraries from lib directory from Hibernate zip
download.
The order-by clause is configured in hbm.xml:
<hibernate-mapping>
<class name="com.test.Object" table="err">
<id name="id" type="java.lang.Long">
<generator class="native" />
</id>
<set name="history" table="history" lazy="true"
order-by="timestamp desc" cascade="all-delete-orphan">
<key column="object_id" />
<one-to-many class="com.test.Event" />
</set>
</class>
</hibernate-mapping>
The exception is:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name
'sessionFactory' defined in class path resource
[applicationContext-dao-hibernate.xml]: Invocation of init method failed; nested exception
is org.hibernate.HibernateException: Unable to parse order-by fragment
Caused by: org.hibernate.HibernateException: Unable to parse order-by fragment
at
org.hibernate.sql.ordering.antlr.OrderByFragmentTranslator.render(OrderByFragmentTranslator.java:66)
at org.hibernate.sql.Template.renderOrderByStringTemplate(Template.java:310)
at
org.hibernate.persister.collection.AbstractCollectionPersister.<init>(AbstractCollectionPersister.java:557)
at
org.hibernate.persister.collection.OneToManyPersister.<init>(OneToManyPersister.java:84)
at
org.hibernate.persister.PersisterFactory.createCollectionPersister(PersisterFactory.java:104)
and more...
Caused by: java.lang.NullPointerException
at
org.hibernate.sql.ordering.antlr.OrderByFragmentParser.resolveFunction(OrderByFragmentParser.java:115)
at
org.hibernate.sql.ordering.antlr.GeneratedOrderByFragmentParser.expression(GeneratedOrderByFragmentParser.java:619)
at
org.hibernate.sql.ordering.antlr.GeneratedOrderByFragmentParser.sortKey(GeneratedOrderByFragmentParser.java:337)
at
org.hibernate.sql.ordering.antlr.GeneratedOrderByFragmentParser.sortSpecification(GeneratedOrderByFragmentParser.java:248)
at
org.hibernate.sql.ordering.antlr.GeneratedOrderByFragmentParser.orderByFragment(GeneratedOrderByFragmentParser.java:192)
at
org.hibernate.sql.ordering.antlr.OrderByFragmentTranslator.render(OrderByFragmentTranslator.java:60)
... 38 more
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