EDIT

import eu.etaxonomy.cdm.model.common.GrantedAuthorityImpl.Role;

        //initialize user and metaData for new databases

        int userCount = getUserService().count(User.class);

        if (userCount == 0 ){

            progressMonitor.subTask("Creating Admin User");

            createAdminUser();

        }

        progressMonitor.worked(1);

        //CDM Meta Data

        int metaDataCount = getCommonService().getCdmMetaData().size();

        if (metaDataCount == 0){

            progressMonitor.subTask("Creating Meta Data");

            createMetadata();

        }

        progressMonitor.worked(1);

    protected void createAdminUser(){

        User firstUser = User.NewInstance("admin", "00000");

        GrantedAuthorityImpl role_admin = GrantedAuthorityImpl.NewInstance();

        role_admin.setAuthority(Role.ROLE_ADMIN.name());

        Set<GrantedAuthority> authorities = new HashSet<GrantedAuthority>();

        authorities.add(role_admin);

        firstUser.setGrantedAuthorities(authorities);

        getUserService().save(firstUser);

        logger.info("Admin user created.");

    }

    protected void createMetadata(){

        List<CdmMetaData> metaData = CdmMetaData.defaultMetaData();

        getCommonService().saveAllMetaData(metaData);

        logger.info("Metadata created.");

    }