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Please help me on using EJB-QL with JBoss 4.0

James Zhang
Ranch Hand

Joined: Sep 06, 2002
Posts: 30
I am trying to follow the CMP example code from book "Teach yourself EJB in 21 days", but my JBoss server always give me the following deploy error:

org.jboss.deployment.DeploymentException: Error compiling EJB-QL statement 'SELECT OBJECT(o) FROM Order AS o
WHERE o.status = ?1'; - nested throwable: (org.jboss.ejb.plugins.cmp.ejbql.ParseException: Encountered "Order" at line 1, column 23.
Was expecting one of:
"IN" ...
<ABSTRACT_SCHEMA> ...
)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCEJBQLQuery.<init>(JDBCEJBQLQuery.java:52)
...

I checked the configuration files and am quite sure that the schema name is correct. Here is related potion of my ejb-jar.xml file:

...
<entity>
<ejb-name>OrderEJB</ejb-name>
<home>day11.OrderHome</home>
<remote>day11.Order</remote>
<ejb-class>day11.OrderEJB</ejb-class>
<persistence-type>Container</persistence-type>
<prim-key-class>java.lang.String</prim-key-class>
<reentrant>False</reentrant>
<cmp-version>2.x</cmp-version>
<abstract-schema-name>Order</abstract-schema-name>
<cmp-field>
<field-name>orderId</field-name>
</cmp-field>
<cmp-field>
<field-name>studentId</field-name>
</cmp-field>
<cmp-field>
<field-name>orderDate</field-name>
</cmp-field>
<cmp-field>
<field-name>status</field-name>
</cmp-field>
<cmp-field>
<field-name>amount</field-name>
</cmp-field>
<primkey-field>orderId</primkey-field>
<query>
<query-method>
<method-name>findByStatus</method-name>
<method-params>
<method-param>java.lang.String</method-param>
</method-params>
</query-method>
<ejb-ql>
<![CDATA[SELECT OBJECT(o) FROM Order AS o
WHERE o.status = ?1]]>
</ejb-ql>
</query>
<query>
<query-method>
<method-name>ejbSelectAllOrderAmounts</method-name>
<method-params>
</method-params>
</query-method>
<ejb-ql>
<![CDATA[SELECT o.amount FROM Order AS o
WHERE o.orderId IS NOT NULL]]>
</ejb-ql>
</query>
</entity>
...

And the jbosscmp-jdbc.xml:

...
<defaults>
<datasource>java:/DefaultDS</datasource>
<datasource-mapping>mySQL</datasource-mapping>
<create-table>true</create-table>
<remove-table>false</remove-table>
<pk-constraint>true</pk-constraint>
<preferred-relation-mapping>foreign-key</preferred-relation-mapping>
</defaults>
...

Anybody has similar problem before? Any suggestion would be greatly appreciated!

Thanks!
 
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