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019package org.apache.james.mailbox.jpa.migrator.command;
020
021import javax.persistence.EntityManager;
022
023import org.apache.james.mailbox.jpa.migrator.exception.JpaMigrateException;
024
025/**
026 * JIRA IMAP-165 is "Add index annotation on frequently used columns".
027 * 
028 * Add 3 indexes for the DELETED, SEEN and RECENT columns of MEMBERSHIP table.
029 * 
030 * @link https://issues.apache.org/jira/browse/IMAP-165
031 * 
032 */
033public class IMAP165JpaMigrateCommand implements JpaMigrateCommand {
034
035    /**
036     * @see org.apache.james.mailbox.jpa.migrator.command#migrate(javax.persistence.EntityManager)
037     */
038    public void migrate(EntityManager em) throws JpaMigrateException {
039        JpaMigrateQuery.executeUpdate(em, "CREATE INDEX I_MMBRSHP_SEEN ON MEMBERSHIP (SEEN)");
040        JpaMigrateQuery.executeUpdate(em, "CREATE INDEX I_MMBRSHP_RECENT ON MEMBERSHIP (RECENT)");
041        JpaMigrateQuery.executeUpdate(em, "CREATE INDEX I_MMBRSHP_DELETED ON MEMBERSHIP (DELETED)");
042    }
043
044}