package org.andromda.cartridges.ejb.metafacades;
   
   import java.util.Collection;
   import java.util.Iterator;
   import org.andromda.cartridges.ejb.EJBProfile;
   import org.andromda.metafacades.uml.ParameterFacade;
   import org.apache.commons.lang.StringUtils;
   
   /**
   * <p>
   * Represents an EJB finder method. </p> Metaclass facade implementation.
   */
  public class EJBFinderMethodFacadeLogicImpl
          extends EJBFinderMethodFacadeLogic
  {
      private static final long serialVersionUID = 34L;
      // ---------------- constructor -------------------------------
  
      /**
       * @param metaObject
       * @param context
       */
      public EJBFinderMethodFacadeLogicImpl(Object metaObject, String context)
      {
          super(metaObject, context);
      }
  
      /**
       * @see org.andromda.cartridges.ejb.metafacades.EJBFinderMethodFacadeLogic#handleGetQuery()
       */
      protected String handleGetQuery()
      {
  
          // first see if there is a query stored as a constraint
          String queryString = super.getQuery("query.EJB-QL");
  
          // otherwise see if there is a query stored as a tagged value
          if (StringUtils.isEmpty(queryString))
          {
              Object value = this.findTaggedValue(EJBProfile.TAGGEDVALUE_EJB_QUERY);
              queryString = (String)value;
              if (queryString != null)
              {
                  // remove any excess whitespace
                  queryString = queryString.replaceAll("[$\\s]+", " ");
              }
          }
  
          // if there wasn't any stored query, create one by default.
          if (StringUtils.isEmpty(queryString))
          {
              String variableName = StringUtils.uncapitalize(this.getOwner().getName());
              queryString = "SELECT DISTINCT OBJECT(" + variableName + ") FROM " + this.getOwner().getName() + " as " +
                      variableName;
              if (!this.getArguments().isEmpty())
              {
                  queryString = queryString + " WHERE";
                  Collection parameters = this.getArguments();
                  if (parameters != null && !parameters.isEmpty())
                  {
                      Iterator parameterIt = parameters.iterator();
                      for (int ctr = 1; parameterIt.hasNext(); ctr++)
                      {
                          Object test = parameterIt.next();
                          ParameterFacade param = (ParameterFacade)test;
                          queryString = queryString + ' ' + variableName + '.' + param.getName() + " = ?" + ctr;
                          if (parameterIt.hasNext())
                          {
                              queryString = queryString + " AND";
                          }
                      }
                  }
              }
          }
          return queryString;
      }
  
      /**
       * @see org.andromda.cartridges.ejb.metafacades.EJBFinderMethodFacadeLogic#handleGetTransactionType()
       * @see org.andromda.cartridges.ejb.metafacades.EJBFinderMethodFacade#getTransactionType()
       */
      protected String handleGetTransactionType()
      {
          return (String)this.findTaggedValue(EJBProfile.TAGGEDVALUE_EJB_TRANSACTION_TYPE, true);
      }
  }