PrepareMessage.java

/**
 * Copyright (C) 2000-2016 Atomikos <info@atomikos.com>
 *
 * LICENSE CONDITIONS
 *
 * See http://www.atomikos.com/Main/WhichLicenseApplies for details.
 */

package com.atomikos.icatch.imp;

import com.atomikos.icatch.HeurHazardException;
import com.atomikos.icatch.Participant;
import com.atomikos.icatch.RollbackException;

/**
 * A prepare message implementation.
 */

class PrepareMessage extends PropagationMessage
{

    public PrepareMessage ( Participant participant , Result result )
    {
        super ( participant , result );
    }

    /**
     * A prepare message.
     *
     * @return Boolean True if YES vote, False if NO vote, null if
     *         readonly vote.
     */

    protected Boolean send () throws PropagationException
    {
        Participant part = getParticipant ();
        int ret = 0;
        Boolean result = null;
        try {
            ret = part.prepare ();
            if ( ret == Participant.READ_ONLY )
                result = null;
            else
                result = new Boolean ( true );
        } catch ( HeurHazardException heurh ) {
            throw new PropagationException ( heurh, false );
        } catch ( RollbackException jtr ) {
            // NO vote.
            result = new Boolean ( false );
        } catch ( Exception e ) {
            // here, participant might be indoubt!
            HeurHazardException heurh = new HeurHazardException ();
            throw new PropagationException ( heurh, false );

        }
        return result;
    }

    public String toString ()
    {
        return ("PrepareMessage to " + getParticipant ());
    }

}