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Problem with many-to-many relationships with MySQL

 
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Posts: 5
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Hi all,
I'm having some troubles with many-to-many bidirectional relationships in MySQL.
There're two entity beans (OrderBean and ShopBean) wich are related this way.
An order can be placed in many shops and a shop can have many orders.
Everything deploys correctly, but when I try to create an Order I get this exception from JBoss:
2004-02-25 19:51:47,649 ERROR [org.jboss.ejb.plugins.cmp.jdbc.JDBCCreateEntityCommand.Order] Error checking if entity exists
java.sql.SQLException: Syntax error or access violation, message from server: "You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near 'order WHERE idOrder=7' at line 1"
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1651)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:889)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:956)
at com.mysql.jdbc.Connection.execSQL(Connection.java:1874)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1538)
at org.jboss.resource.adapter.jdbc.WrappedPreparedStatement.executeQuery(WrappedPreparedStatement.java:304)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCInsertPKCreateCommand.beforeInsert(JDBCInsertPKCreateCommand.java:83)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCAbstractCreateCommand.execute(JDBCAbstractCreateCommand.java:137)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager.createEntity(JDBCStoreManager.java:554)
at org.jboss.ejb.plugins.CMPPersistenceManager.createEntity(CMPPersistenceManager.java:208)
at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.createEntity(CachedConnectionInterceptor.java:269)
at org.jboss.ejb.EntityContainer.createLocalHome(EntityContainer.java:581)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
....
Order table has idOrder as primary key and Shop table has idShop. There is also a mapping table called order_shop with two fields : idOrder and idShop.
Here's the most important code in both beans :

and the relation in ejb-jar.xml is as follows :



What am I doing wrong? Any help? Any idea to solve this?
Thanks in advance.
Pablo.
 
Pablo Mu�iz
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Never mind. I didn't realize "order" is a reserved word in MySQL, so Ive changed the name of the table.
Pablo.
 
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