gov.nasa.arc.brahms.vm.data
Class VMThoughtframe

java.lang.Object
  gov.nasa.arc.brahms.common.data.BrahmsObject
      gov.nasa.arc.brahms.common.data.ModelElement
          gov.nasa.arc.brahms.common.data.NamedModelElement
              gov.nasa.arc.brahms.common.data.BFrame
                  gov.nasa.arc.brahms.common.data.Thoughtframe
                      gov.nasa.arc.brahms.vm.data.VMThoughtframe

All Implemented Interfaces:

gov.nasa.arc.brahms.common.IConstants, java.io.Serializable

public class VMThoughtframe
extends Thoughtframe

A VMThoughtframe is a Thoughtframe with extensions for use in the Brahms virtual machine. A Thoughtframe is a production rule. A Thoughtframe allows for the deduction of new beliefs from existing beliefs allowing for reasoning behavior for agents and objects.

A thoughtframe consists of Precondition(s) defining the conditions under which the thoughtframe can be activated and a Body which is executed when the thoughtframe is active. The body of a thoughtframe can only consist of Consequences.

As part of a thoughtframe definition variables can be defined. The variables get their values assigned through the preconditions matching with beliefs.

Version:

8 November 1999

Author:

Ron van Hoof

See Also:

Thoughtframe, Precondition, Variable, Consequence, Serialized Form

Field Summary

Fields inherited from class gov.nasa.arc.brahms.common.data.BFrame

BODY_PROPERTY

Fields inherited from class gov.nasa.arc.brahms.common.data.NamedModelElement

NAME_PROPERTY

Fields inherited from interface gov.nasa.arc.brahms.common.IConstants

ABORT, ACTIVECLASS, ACTIVECONCEPT, ACTIVEINSTANCE, AGENT, ANONYMOUS, ANYAGENT, AREA, AREADEF, ASSIGNED, ATTRIBUTE, BASEAREADEF, BASECLASS, BASECONCEPTUALCLASS, BASEGROUP, BASELIBRARY, BOOLEAN, BROADCAST, BUILDING, BYTE, CCLOCK, CDATE, CHAR, CITY, CLASS, CLOCK, COLLECTALL, COMMUNICATE, COMPLETE, COMPOSITE, COMPUTER, CONCEPT, CONCEPTUALCLASS, CONCEPTUALCONCEPT, CONCEPTUALOBJECT, CONTINUE, COPY, CREATEAGENT, CREATEAREA, CREATEOBJECT, current, CURRENT, DATAFRAME, DATE, DB, DETECTABLE, DIV, DOUBLE, EMAIL, EMPTY_STRING, END, ENDACTIVITY, ENTAGENT, EQ, EXCEPTION, EXPR, FACE2FACE, FACTFRAME, FALSE, FAX, FLOAT, FOREACH, FORONE, G2, GE, GEOGRAPHYCONCEPT, GESTURE, GET, GROUP, GT, IMPASSE, INT, INVALID, JAVA, JAVA_TYPE, KNOWN_MODIFIER, KNOWNVAL_MODIFIER, LE, LOCAL, LONG, LT, MAP, MINUS, MOD, MOVE, MULT, NE, NEW, NONE, NOT_MODIFIER, NOWORK, O, OA, OBJECT, ONTOLOGY, PAGER, PARAMETER, PATH, PHONE, PLUS, PRIMITIVE, PRIVATE, PROAGENT, PROTECTED, PRSAGENT, PUBLIC, PUT, RECEIVE, RELATION, sACTIVECLASS, sACTIVECONCEPT, sACTIVEINSTANCE, sAGENT, sARCHIVE, sAREA, sAREADEF, sBOOLEAN, sBYTE, sBYTECODEEXT, sCHAR, sCLASS, sCOMPUTER, sCONCEPT, sCONCEPTUALCLASS, sCONCEPTUALCONCEPT, sCONCEPTUALOBJECT, sCOPY, sCURRENT, sDETECTABLE, sDOUBLE, sEMAIL, sEND, SEND, sFACE2FACE, sFAX, sFILEEXT, sFLOAT, sGEOGRAPHYCONCEPT, sGROUP, SHORT, SIMAGENT, sINT, sJAVA_TYPE, sLONG, sMAP, sNEW, sNONE, sNOWORK, sOBJECT, SOURCECODE, sPAGER, sPARAMETER, sPATH, sPHONE, sPRIVATE, sPROJECTEXT, sPROTECTED, sPUBLIC, sSHORT, sSTART, sSTRING, sSYMBOL, START, STRING, sUNKNOWN, sVOID, SYMBOL, TRUE, UDT, UML, UNASSIGNED, UNDEFINED, unknown, UNKNOWN, UNKNOWN_MODIFIER, V, VARIABLE, VOID, WHENEVER, WORKFRAME, WORLD, XML

Constructor Summary

VMThoughtframe()
Constructor, creates a new thoughtframe for use in the virtual machine.

VMThoughtframe(java.lang.String name)
Constructor, creates a new thoughtframe with the specified name for use in the virtual machine.

VMThoughtframe(java.lang.String file, int line)
Constructor, creates a new thoughtframe for use in the virtual machine and for which its specification is stored in the specified file at the specified line number.

VMThoughtframe(java.lang.String name, java.lang.String file, int line)
Constructor, creates a new thoughtframe with the specified name for use in the virtual machine and for which its specification is stored in the specified file at the specified line number.

Method Summary

IFrameCtx

createContext() Creates a new context for this frame for use in a virtual machine.

Methods inherited from class gov.nasa.arc.brahms.common.data.Thoughtframe

delete, setID

Methods inherited from class gov.nasa.arc.brahms.common.data.BFrame

addBodyElement, addConsequence, addPrecondition, addVariable, getBody, getBodyElement, getFullyQualifiedName, getNumberOfBodyElements, getNumberOfPreconditions, getPreconditions, getPriority, getQualifiedName, getVariable, getVariables, hasBody, hasPreconditions, hasVariables, isRepeat, removeBodyElement, removeConsequence, removePrecondition, removeVariable, setOwner, setOwner, setPriority, setRepeat

Methods inherited from class gov.nasa.arc.brahms.common.data.NamedModelElement

getDisplayText, getName, getOwner, setDisplayText, setFullyQualifiedName, setName, setOwner, toString

Methods inherited from class gov.nasa.arc.brahms.common.data.BrahmsObject

export, getFile, getID, getLine, getSerialNumber, isBCC, isDynamic, isLoaded, isResolved, setBCC, setDynamic, setFile, setID, setLine, setLoaded, setResolved, setSerialNumber

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

VMThoughtframe

public VMThoughtframe()

Constructor, creates a new thoughtframe for use in the virtual machine.

VMThoughtframe

public VMThoughtframe(java.lang.String name)

Constructor, creates a new thoughtframe with the specified name for use in the virtual machine.

Parameters:

name - the name of the thoughtframe

VMThoughtframe

public VMThoughtframe(java.lang.String file,
                      int line)

Constructor, creates a new thoughtframe for use in the virtual machine and for which its specification is stored in the specified file at the specified line number.

Parameters:

file - the file in which the thoughtframe is specified

line - the line number at which the thoughtframe's specification starts in the file

VMThoughtframe

public VMThoughtframe(java.lang.String name,
                      java.lang.String file,
                      int line)

Constructor, creates a new thoughtframe with the specified name for use in the virtual machine and for which its specification is stored in the specified file at the specified line number.

Parameters:

name - the name of the thoughtframe

file - the file in which the thoughtframe is specified

line - the line number at which the thoughtframe's specification starts in the file

Method Detail

createContext

public IFrameCtx createContext()

Creates a new context for this frame for use in a virtual machine.

Note: This method always returns a new instance and does not verify whether one is already created.

Overrides:

createContext in class Thoughtframe

Returns:

IFrameCtx a context for the frame