Examples of IRObject

com.dtrules.interpreter.IRObject
Every Rules Engine object implements the IRObject interface. This interface is used by the Interpreter to execute objects, and by the implementation of operators to manipulate objects.

This interface implements the necessary methods for doing the data conversions necessary when extracting data from the Rules Engine state after having executed a set of rules. @author Paul Snow
org.omg.CORBA.IRObject

Examples of com.dtrules.interpreter.IRObject

    
    if ((attr = (String) attribs.get("set attribute"))!=null){        
      // Look and see if we have an attribute name defined.
        {  
          RName a = RName.getRName(attr);                 
          IRObject value;
                     
                    IREntity enclosingEntity = session.getState().findEntity(a);
                    if(enclosingEntity!=null){

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Examples of com.dtrules.interpreter.IRObject

    }
        // First add this entity to any list found on the entity stack.
        for(int i=0; i< state.edepth(); i++){
            // Look for all Array Lists on the Entity Stack that look like lists of this Entity
            IREntity entity = state.getes(i);
            IRObject elist = entity.get(listname);
            if(elist!=null && elist.type()==IRObject.iArray){
                // If not a member of this list, then add it.
                if(!((RArray)elist).contains(e)){
                   ((RArray)elist).add(e);
                }
            }

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Examples of com.dtrules.interpreter.IRObject

       */
    static class Req extends ROperator {
      Req(){super("req");}


      public void execute(DTState state) throws RulesException {
        IRObject value2 = state.datapop();
        IRObject value1 = state.datapop();
        state.datapush(RBoolean.getRBoolean(value1.equals(value2)));
      }

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Examples of com.dtrules.interpreter.IRObject

       */
    static class Newdate extends ROperator {
      Newdate(){super("newdate");}


      public void execute(DTState state) throws RulesException {
          IRObject obj   = state.datapop();
          String   date  = obj.stringValue();
        try{
          RTime rdate = RTime.getRDate(state.getSession(), date);
          state.datapush(rdate);
        }catch(RulesException e){
          state.datapush(RNull.getRNull());

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Examples of com.dtrules.interpreter.IRObject

   */
  public IRObject datapop() throws RulesException {
    if(datastkptr<=0) {
      throw new RulesException( "Data Stack Underflow", "datapop()", "Data Stack underflow.");
    }
        IRObject rval = datastk[--datastkptr];
        datastk[datastkptr]=null;
        if(testState(VERBOSE)){
            traceInfo("datapop",rval.stringValue());
        }
    return(rval);
  }

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Examples of com.dtrules.interpreter.IRObject

    /**
     * Pop the top element from the control stack and return it.
     * @return
     */
    public IRObject cpop(){
        IRObject r = ctrlstk[--ctrlstkptr];
        ctrlstk[ctrlstkptr]= null;
        return r;
    }

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Examples of com.dtrules.interpreter.IRObject

      if(output  == null)output  = "";
      
      boolean  writeable = true;   // We need to convert access to a boolean
      boolean  readable  = true;    // Make an assumption of r/w
      int      itype     = -1;      // We need to convert the type to an int.
      IRObject defaultO  = null;    // We need to convert the default into a Rules Engine Object.
      
      writeable = access.toLowerCase().indexOf("w")>=0;
      readable  = access.toLowerCase().indexOf("r")>=0;
      if(!writeable && !readable){
          errorMsgs +="\nThe attribute "+attribute+" has to be either readable or writable\r\n";

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Examples of com.dtrules.interpreter.IRObject

        } catch (RulesException e1) {
          errorMsgs+= e1.getMessage()+"\n";
          succeeded = false;
        }
                
        IRObject defaultO = EntityFactory.computeDefaultValue(session, ef, default_value, itype) ;
        
        RName  entityRName = RName.getRName(entityname.trim(),false);
        RName  attributeRName = RName.getRName(attrib_name.trim(),false);
        REntity entity = ef.findcreateRefEntity(false,entityRName);
        int    intType = -1;

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Examples of com.dtrules.interpreter.IRObject

     */
    static class  Def extends ROperator {
        Def(){super("def");}


        public void execute(DTState state) throws RulesException {
            IRObject value = state.datapop();
            RName    name  = state.datapop().rNameValue();
            boolean f = state.def(name, value, true);
            if(!f)throw new RulesException("Undefined",
                    "def", 
                    name+" is undefined");

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Examples of com.dtrules.interpreter.IRObject

    static class  Find   extends ROperator {
        Find(){super("find");}


        public void execute(DTState state) throws RulesException {
            RName    name = state.datapop().rNameValue();
            IRObject v    = state.find(name);
            if(v==null)throw new RulesException("Undefined",
                    "find", 
                    name+" is undefined");
        }

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