package org.kuali.rice.kew.impl.extension;
   
   import org.apache.commons.lang.StringUtils;
   import org.kuali.rice.core.api.exception.RiceIllegalArgumentException;
   import org.kuali.rice.kew.api.extension.ExtensionDefinition;
   import org.kuali.rice.kew.api.extension.ExtensionRepositoryService;
   import org.kuali.rice.kew.rule.bo.RuleAttribute;
   import org.kuali.rice.kew.rule.service.RuleAttributeService;
   
  /**
   * Reference implementation of the {@code ExtensionRepositoryService}.  This implementation
   * essentially sits on top of the legacy "RuleAttribute" service.
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public class ExtensionRepositoryServiceImpl implements ExtensionRepositoryService {
  
      private RuleAttributeService ruleAttributeService;
  
      @Override
      public ExtensionDefinition getExtensionById(String id) throws RiceIllegalArgumentException {
          if (StringUtils.isBlank(id)) {
              throw new RiceIllegalArgumentException("id was null or blank");
          }
          RuleAttribute ruleAttribute = ruleAttributeService.findByRuleAttributeId(id);
          return translateFromRuleAttribute(ruleAttribute);
      }
  
      @Override
      public ExtensionDefinition getExtensionByName(String name) throws RiceIllegalArgumentException {
          if (StringUtils.isBlank(name)) {
              throw new RiceIllegalArgumentException("name was null or blank");
          }
          RuleAttribute ruleAttribute = ruleAttributeService.findByName(name);
          return translateFromRuleAttribute(ruleAttribute);
      }
  
      private ExtensionDefinition translateFromRuleAttribute(RuleAttribute ruleAttribute) {
          return RuleAttribute.to(ruleAttribute);
      }
  
      public void setRuleAttributeService(RuleAttributeService ruleAttributeService) {
          this.ruleAttributeService = ruleAttributeService;
      }
  
  }