Examples of nexj.core.scripting.Pair

nexj.core.scripting.Pair
The Lisp Pair (cons). Also an expression node. The internal representation of the expression is the same as in Lisp, i.e. pairs with symbols for operators. This class provides convenience expression building API for use in Java code. Sample Usage Java-like syntax: (address.city like "A*") and (birthDate >= #1-Jan-1980#) Scheme syntax: (and (like? (@ address city) "A*") (>= birthDate (cast timestamp "1980-01-01 00:00:00"))) Internal representation: (and . ((like? . ((@ . (address . (city . '())) . ("A*" . '())))) . ((>= . (birthdate . ((cast . (timestamp . ("1980-01-01 00:00:00" . '())))) . '()))) Java API for Scheme expressions: Pair.attribute("city").from("address").like("A*") .and(Pair.attribute("birthDate").ge(Primitive.toTimestamp("1980-01-01 00:00:00"));

      if (assoc == null)
      {
         assoc = EMPTY_ASSOC;
      }


      m_functionMap.put(event, assoc, new Pair(code, m_functionMap.get(event, assoc)));
      setPosURLs(code, step.getName());
   }

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      for (Lookup2D.Iterator itr = m_functionMap.valueIterator(); itr.hasNext();)
      {
         itr.next();


         Event event = (Event)itr.getKey1();
         Pair body = (Pair)machine.invoke((Function)machine.getGlobalEnvironment()
            .getVariable(Symbol.SYS_GENERATE_FLOW_FUNCTION), itr.getValue(), (Object[])null);


         itr.setValue(new Pair(new Compiler().compile(m_variables,
            event.getArguments(true), body, m_posMap, m_urlMap, machine)));
         map.put(event.getRoot(), itr.getKey2(), null);
      }


      for (Lookup2D.Iterator itr = map.valueIterator(); itr.hasNext();)

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      Metaclass metaclass = event.getMetaclass();
      
      for (int i = 0, nCount = metaclass.getDerivedCount(); i < nCount; ++i)
      {
         Event derived = metaclass.getDerived(i).findEvent(event.getName(), event.getArgumentCount());
         Pair dpair = (Pair)m_functionMap.get(derived, assoc);
         
         if (pair != null)
         {
            dpair = Pair.append(pair, dpair);
            m_functionMap.put(derived, assoc, dpair);

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       *
       * @see nexj.core.meta.xml.XMLSOAMetadataLoader.SOAObject#getCode()
       */
      public Object getCode()
      {
         Pair interfaces = null;


         for (int i = m_interfaceList.size() - 1; i >= 0; i--)
         {
            interfaces = new Pair(
               Symbol.define(((InterfaceRef)m_interfaceList.get(i)).getInterface().getGlobalName()),
               interfaces
            );
         }


         Pair implementations = null;


         if (m_implementation != null)
         {
            for (Iterator itr = m_implementation.getInterfaceImplementationIterator(); itr.hasNext(); )
            {
               InterfaceImplementation ifaceImpl = (InterfaceImplementation)itr.next();


               implementations = new Pair(Symbol.define(ifaceImpl.getGlobalName()), implementations);
            }
         }


         return Pair.list(
            DEFINE_CLASS,

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       *
       * @see nexj.core.meta.xml.XMLSOAMetadataLoader.SOAObject#getCode()
       */
      public Object getCode()
      {
         Pair methods = null;


         for (Iterator itr = m_methodSet.iterator(); itr.hasNext(); )
         {
            methods = new Pair(((Method)itr.next()).getCode(), methods);
         }


         return new Pair(
            DEFINE_CLASS,
            new Pair(Symbol.define(getGlobalName()),
               new Pair(null,
                  new Pair(getDescription(), methods)
               )
            )
         );
      }

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       *
       * @see nexj.core.meta.xml.XMLSOAMetadataLoader.SOAObject#getCode()
       */
      public Object getCode()
      {
         Pair argList = null;


         for (int i = m_argumentList.size() - 1; i >= 0; i--)
         {
            argList = new Pair(((Argument)m_argumentList.get(i)).getCode(), argList);
         }


         return Pair.list(
            CLASS_METHOD,
            Symbol.define(m_sName),

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    */
   public void generate(Machine machine)
   {
      verifyNotReadOnly();


      Pair body = getBody();


      if (body != null)
      {
         if (m_activity.getFlow().isPrivileged())
         {
            body = Pair.list(new Pair(Symbol.BEGIN_PRIVILEGED, body));
         }


         m_function = compile(ARGUMENTS, body, machine);
      }
   }

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       *
       * @see nexj.core.meta.xml.XMLSOAMetadataLoader.SOAObject#getCode()
       */
      public Object getCode()
      {
         Pair attributes = null;


         for (Iterator itr = m_attributeSet.iterator(); itr.hasNext(); )
         {
            attributes = new Pair(((Attribute)itr.next()).getCode(), attributes);
         }


         Pair bases = null;


         for (int i = m_baseList.size() - 1; i >= 0; i--)
         {
            bases = new Pair(Symbol.define(((ModelType)m_baseList.get(i)).getGlobalName()), bases);
         }


         return new Pair(
            DEFINE_CLASS,
            new Pair(Symbol.define(getGlobalName()),
               new Pair(bases,
                  new Pair(getDescription(), attributes)
               )
            )
         );
      }

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       *
       * @see nexj.core.meta.xml.XMLSOAMetadataLoader.CodeProvider#getCode()
       */
      public Object getCode()
      {
         Pair code = null;


         for (Iterator itr = m_interfaceSet.iterator(); itr.hasNext(); )
         {
            InterfaceImplementation iface = (InterfaceImplementation)itr.next();


            code = new Pair(iface.getCode(), code);
         }


         return new Pair(Symbol.BEGIN, code);
      }

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    * @param sym The argument symbol.
    * @param arg The argument expression.
    */
   protected static Pair addArg(Pair code, Symbol sym, Object arg)
   {
      return new Pair(Pair.list(Symbol.CONS, Pair.quote(sym), arg), code);
   }

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