📄 planstepinfo.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.5.0_07) on Tue Oct 16 12:57:45 EDT 2007 --><TITLE>PlanStepInfo</TITLE><META NAME="keywords" CONTENT="JSHOP2.PlanStepInfo class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="PlanStepInfo";}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../JSHOP2/package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../JSHOP2/Plan.html" title="class in JSHOP2"><B>PREV CLASS</B></A> <A HREF="../JSHOP2/Plus.html" title="class in JSHOP2"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../index.html?JSHOP2/PlanStepInfo.html" target="_top"><B>FRAMES</B></A> <A HREF="PlanStepInfo.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">JSHOP2</FONT><BR>Class PlanStepInfo</H2><PRE>java.lang.Object <IMG SRC="../resources/inherit.gif" ALT="extended by "><B>JSHOP2.PlanStepInfo</B></PRE><HR><DL><DT><PRE>public class <B>PlanStepInfo</B><DT>extends java.lang.Object</DL></PRE><P>This object encapsulates the information pertaining to a single step in the planning process. A sequence of these objects stored in a list represents the steps taken during the process of finding a plan. The step represented by this object is determined by the type of action that is being performed. There are 6 types of actions: SETGOALTASKS, TRYING, REDUCED, STATECHANGED, BACKTRACKING, and PLANFOUND. Depending on which action is being performed, a different subset of the fields in PlanStepInfo must be set as follows: During a "SETGOALTASKS" step: - children: set to represent the goal task list - ordered: set to true if goal task list is ordered; false otherwise During a "TRYING" step: - taskAtom: set to the current task atom (and its bindings) being tried (or !!INOP) - action: set to "TRYING" - state: set to a list of strings representing the current state of the world During a "REDUCED" step: - taskAtom: set to the current task atom (and its bindings) being reduced - action: set to "REDUCED" - method: set to method being used to reduce current task atom - preconditions: set to the preconditions that need to be satisfied to use method - children: set to a list of strings representing the task atoms that are the children - ordered: set to false if the current task atom is unordered. True otherwise. During a "STATECHANGED" step: - taskAtom: set to the top task that is changing the state - delAdd: set to a vector of 4 vectors that represent added & deleted atoms & protections - operatorInstance: set to the string representing 'taskAtom' after it's variables are instantiated During a "BACKTRACKING" step: - taskAtom: set to the task atom that you are currently bactracking from During a "PLANFOUND" step: - planFound: set to true<P><P><DL><DT><B>Author:</B></DT> <DD>John Shin</DD></DL><HR><P><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Field Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/PlanStepInfo.html#action">action</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../JSHOP2/TaskList.html" title="class in JSHOP2">TaskList</A>[]</CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/PlanStepInfo.html#children">children</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.util.Vector[]</CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/PlanStepInfo.html#delAdd">delAdd</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/PlanStepInfo.html#method">method</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/PlanStepInfo.html#operatorInstance">operatorInstance</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/PlanStepInfo.html#ordered">ordered</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/PlanStepInfo.html#planFound">planFound</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/PlanStepInfo.html#preconditions">preconditions</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.util.ArrayList<java.lang.String></CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/PlanStepInfo.html#state">state</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../JSHOP2/TaskAtom.html" title="class in JSHOP2">TaskAtom</A></CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/PlanStepInfo.html#taskAtom">taskAtom</A></B></CODE><BR> </TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../JSHOP2/PlanStepInfo.html#PlanStepInfo()">PlanStepInfo</A></B>()</CODE>⌨️ 快捷键说明
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