Examples of nexj.core.persistence.Query$MultiArgOperatorFactory

nexj.core.persistence.Query
Base class for creating a multi-arg operator.

      {
         writer.write(" ?");
      }
      else
      {
         Query query = m_source.getQuery();


         if (query == null)
         {
            writer.write(" ?"); 
         }
         else
         {
            if (query.isInverse())
            {
               writer.write("@ ");
               writer.write(query.getMetaclass().getName());
            }


            printAssoc(query, writer);
         }

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    * @param writer The destination writer.
    * @throws IOException if the writer encounters an error.
    */
   private static void printAssoc(Query query, PrintWriter writer) throws IOException
   {
      Query root = (writer.getWriter() instanceof QueryHolder) ?
         ((QueryHolder)writer.getWriter()).getQuery() : null;


      if (query != root)
      {
         Query parent = query.getParent();


         if (parent == null)
         {
            writer.write("@ ");
            writer.write(query.getMetaclass().getName());
         }
         else
         {
            if (parent != root && !query.isInverse())
            {
               printAssoc(parent, writer);
            }


            writer.write(' ');
            writer.write(query.getAttribute().getName());


            if (parent != root && query.isInverse() &&
               (root != null || parent.getParent() != root))
            {
               printAssoc(parent, writer);
            }
         }
      }

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    */
   private static Pair getWhereAssoc(Query root, Query query, Pair path)
   {
      if (query != root)
      {
         Query parent = query.getParent();


         if (parent == null)
         {
            path.setHead(Symbol.ATAT);
            path = new Pair(query.getMetaclass().getSymbol(), path);
         }
         else
         {
            if (parent != root && !query.isInverse())
            {
               path = getWhereAssoc(root, parent, path);
            }


            path = new Pair(query.getAttribute().getSymbol(), path);


            if (parent != root && query.isInverse() &&
               (root != null || parent.getParent() != root))
            {
               getWhereAssoc(root, parent, path);
            }
         }
      }

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    * @see nexj.core.persistence.Operator#getExpression(nexj.core.persistence.Query)
    */
   public Object getExpression(Query root)
   {
      Pair path = new Pair(Symbol.AT);
      Query query = m_source.getQuery();


      if (query.isInverse())
      {
         path.setHead(Symbol.ATAT);
         path = new Pair(query.getMetaclass().getSymbol(), path);
      }


      path = getWhereAssoc(root, query, path);


      if (m_source instanceof Field)

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                     throw new IllegalArgumentException("Too many query arguments");
                  }
               }
            }
            
            Query query = Query.createRead(m_context.getMetadata().getMetaclass(classSymbol.getName()),
               attributes, where, null, -1, 0, false, Query.SEC_NONE, m_context);


            resultList.addAll((List)RPCUtil.transfer(query.read(), attributes, identityMap, RPCUtil.TF_ALL));
         }


         writer = new OutputStreamWriter(new BufferedOutputStream(new FileOutputStream(file)), XMLUtil.ENCODING);


         new SOAPMarshaller(m_context).serialize(resultList, writer);

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   {
      InvocationContext context = new InvocationContext(Repository.getMetadata());
      MatchOperator op = new MatchOperator(context);
      Metaclass metaclass = context.getMetadata().getMetaclass("Contact");
      AttributeOperator attribOp = new AttributeOperator(
         new Field(new Query(metaclass, context), metaclass.getAttribute("firstName")));


      context.setLocale(Locale.ENGLISH);
      op.setAttribute(attribOp);
      attribOp.setConstant(true);
      attribOp.setValue("a abc def ghi");

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         aop = null;
      }


      if (aop != null && aop.getSource() instanceof Query)
      {
         Query query = (Query)aop.getSource();


         if (query.getConstraint() == null)
         {
            query.setConstraint(this);
         }
      }
   }

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         }
      }


      for (int nQuery = 1; nQuery < query.getOutputQueryCount(); nQuery++)
      {
         Query subQuery = query.getOutputQuery(nQuery);
         Object subMap = mapping.findComposition(map, subQuery.getAttribute());


         if (!(subMap instanceof Lookup) || !isComposition(subQuery, mapping, (Lookup)subMap))
         {
            return false;
         }

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         {
            attrSet.set(((Field)source).getAttribute().getOrdinal());
         }
         else
         {
            Query assoc = source.getQuery();


            if (assoc.getParent() == query)
            {
               attrSet.set(assoc.getAttribute().getOrdinal());
            }
         }
      }


      if (!attrSet.isEmpty())

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      assert query.isRoot();


      for (int nQuery = 1; nQuery < query.getOutputQueryCount(); nQuery++)
      {
         Query subQuery = query.getOutputQuery(nQuery);


         if (!subQuery.isRoot())
         {
            Object attr = subQuery.getAttribute().getSymbol();


            if ((subQuery = subQuery.getParent()) != query)
            {
               attr = new Pair(attr);


               do
               {
                  attr = new Pair(subQuery.getAttribute().getSymbol(), attr);
                  subQuery = subQuery.getParent();
               }
               while (subQuery != query);
            }


            compAttrs = new Pair(attr, compAttrs);

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nexj.core.admin.etl.DataLoader

nexj.core.meta.Attribute

nexj.core.meta.Metaclass

nexj.core.meta.persistence.AttributeMapping

nexj.core.meta.persistence.Key

nexj.core.meta.persistence.virtual.ReadMapping

nexj.core.persistence.file.FileAdapterTest

nexj.core.persistence.operator.AggregateOperator

nexj.core.persistence.operator.AndOperator

nexj.core.persistence.operator.AttributeOperator

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