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package org.apache.james.imap.jpa.migrator.command;

import javax.persistence.EntityManager;

import org.apache.james.imap.jpa.migrator.exception.JpaMigrateException;

/**
 * JIRA IMAP-172 is "Cleanup JPAMailbox".
 * 
 * Simply drop the MAILBOX.MESSAGECOUNT and MAILBOX.SIZE columns.
 * 
 * @link https://issues.apache.org/jira/browse/IMAP-172
 * 
 */
public class IMAP172JpaMigrateCommand implements JpaMigrateCommand {

    /* (non-Javadoc)
     * @see org.apache.james.imap.jpa.migrator.command.JpaMigrateCommand#migrate(javax.persistence.EntityManager)
     */
    public void migrate(EntityManager em) throws JpaMigrateException {
        JpaMigrateQuery.executeUpdate(em, "ALTER TABLE MAILBOX DROP COLUMN MESSAGECOUNT");
        JpaMigrateQuery.executeUpdate(em, "ALTER TABLE MAILBOX DROP COLUMN SIZE");
    }

}
