gistfile1.java

package magnet.support.mail.queue.builder;

import com.google.common.collect.Maps;
import magnet.support.mail.queue.entity.MailQueueEntity;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.Assert;

import java.util.Date;

/**
 * @author nyilmaz
 */
public class MailQueueBuilder {
   
   private static final Logger logger = LoggerFactory.getLogger(MailQueueBuilder.class);

   private MailQueueEntity mailQueueEntity;

   public MailQueueBuilder init() {
     // defaults
      mailQueueEntity = new MailQueueEntity();
      mailQueueEntity.setVariables(Maps.<String, Object>newHashMap());
      mailQueueEntity.setAddedTime(new Date());
      mailQueueEntity.setForced(false);
      return this;
   }

   public MailQueueBuilder userId(Long userId) {
      mailQueueEntity.setUserId(userId);
      return this;
   }

   public MailQueueBuilder toEmail(String email) {
      mailQueueEntity.setEmail(email);
      return this;
   }
   
   public MailQueueBuilder force(Boolean force) {
      mailQueueEntity.setForced(force);
      return this;
   }
   
   public MailQueueBuilder addTemplateVar(String key, Object value) {
      mailQueueEntity.getVariables().put(key, value);
      return this;
   }

   public MailQueueEntity build() {
      Assert.notNull(mailQueueEntity.getEmail(), "email cannot be null.");
      if(mailQueueEntity.getVariables().isEmpty()) {
         logger.warn("Did you forget to add template variables?");
      }
      return mailQueueEntity;
   }

}