package org.alfresco.repo.transfer;

import org.alfresco.service.cmr.transfer.TransferVersion;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * This is an implementation of TransferVersionChecker.
 * 
 * It allows transfer to the same edition/major/minor but ignores revision.
 */
public class TransferVersionCheckerImpl implements TransferVersionChecker
{
    private static Log logger = LogFactory.getLog(TransferVersionCheckerImpl.class);
    
    public boolean checkTransferVersions(TransferVersion from, TransferVersion to)
    {
        logger.debug("checkTransferVersions from:" + from + ", to:" + to);
        
        if(from == null || to == null || to.getEdition() == null || to.getVersionMajor() == null || to.getVersionMinor() == null)
        {
            return false;
        }
        
        if(!from.getEdition().equalsIgnoreCase(to.getEdition()))
        {
            return false;
        }
        
        if(!from.getVersionMajor().equalsIgnoreCase(to.getVersionMajor()))
        {
            return false;
        }
        
        if(!from.getVersionMinor().equalsIgnoreCase(to.getVersionMinor()))
        {
            return false;
        }
        
        // ignore revisions
        
        return true;
    }

}