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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>TermVariable</TITLE><META NAME="keywords" CONTENT="JSHOP2.TermVariable class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="TermVariable";}</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 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CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../index.html?JSHOP2/TermVariable.html" target="_top"><B>FRAMES</B></A> <A HREF="TermVariable.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 TermVariable</H2><PRE>java.lang.Object <IMG SRC="../resources/inherit.gif" ALT="extended by "><A HREF="../JSHOP2/CompileTimeObject.html" title="class in JSHOP2">JSHOP2.CompileTimeObject</A> <IMG SRC="../resources/inherit.gif" ALT="extended by "><A HREF="../JSHOP2/Term.html" title="class in JSHOP2">JSHOP2.Term</A> <IMG SRC="../resources/inherit.gif" ALT="extended by "><B>JSHOP2.TermVariable</B></PRE><HR><DL><DT><PRE>public class <B>TermVariable</B><DT>extends <A HREF="../JSHOP2/Term.html" title="class in JSHOP2">Term</A></DL></PRE><P>Each variable symbol both at compile time and at run time, is an instance of this class.<P><P><DL><DT><B>Version:</B></DT> <DD>1.0.3</DD><DT><B>Author:</B></DT> <DD>Okhtay Ilghami, <a href="http://www.cs.umd.edu/~okhtay">http://www.cs.umd.edu/~okhtay</a></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>private int</CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/TermVariable.html#index">index</A></B></CODE><BR> Variable symbols are mapped to integers at compile time, and these integers are used thereafter to represent the variable symbols.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>private static <A HREF="../JSHOP2/TermVariable.html" title="class in JSHOP2">TermVariable</A>[]</CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/TermVariable.html#variables">variables</A></B></CODE><BR> To represent the variable symbols that we know occur in the domain description, so that there will be no duplicate copies of those symbols.</TD></TR></TABLE> <A NAME="fields_inherited_from_class_JSHOP2.CompileTimeObject"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Fields inherited from class JSHOP2.<A HREF="../JSHOP2/CompileTimeObject.html" title="class in JSHOP2">CompileTimeObject</A></B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../JSHOP2/CompileTimeObject.html#endl">endl</A></CODE></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/TermVariable.html#TermVariable(int)">TermVariable</A></B>(int indexIn)</CODE><BR> To initialize this variable symbol.</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_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>Method Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../JSHOP2/Term.html" title="class in JSHOP2">Term</A></CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/TermVariable.html#bind(JSHOP2.Term[])">bind</A></B>(<A HREF="../JSHOP2/Term.html" title="class in JSHOP2">Term</A>[] binding)</CODE><BR> Since this term is a variable symbol, binding it basically means finding out whether or not this variable is already mapped to something in the input, and if so, returning the value this variable is mapped to.</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/TermVariable.html#equals(JSHOP2.Term)">equals</A></B>(<A HREF="../JSHOP2/Term.html" title="class in JSHOP2">Term</A> t)</CODE><BR> This function returns <code>false</code>.</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/TermVariable.html#findUnifier(JSHOP2.Term, JSHOP2.Term[])">findUnifier</A></B>(<A HREF="../JSHOP2/Term.html" title="class in JSHOP2">Term</A> t, <A HREF="../JSHOP2/Term.html" title="class in JSHOP2">Term</A>[] binding)</CODE><BR> Find a unifier between this variable symbol and another given term.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/TermVariable.html#getIndex()">getIndex</A></B>()</CODE><BR> To get the index for this variable symbol.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../JSHOP2/TermVariable.html" title="class in JSHOP2">TermVariable</A></CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/TermVariable.html#getVariable(int)">getVariable</A></B>(int index)</CODE><BR> To return the correponding existing variable symbol.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static void</CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/TermVariable.html#initialize(int)">initialize</A></B>(int size)</CODE><BR> To initialize an array of variable symbols that we know occur in the domain description, so that there will be no duplicate copies of those symbols.</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/TermVariable.html#isGround()">isGround</A></B>()</CODE><BR> This function always returns <code>false</code> because a variable symbol is never ground by definition.</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/TermVariable.html#toCode()">toCode</A></B>()</CODE><BR> This function produces Java code to create this variable symbol as a term.</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/TermVariable.html#toString()">toString</A></B>()</CODE><BR> This function is used to print this variable symbol.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_JSHOP2.Term"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Methods inherited from class JSHOP2.<A HREF="../JSHOP2/Term.html" title="class in JSHOP2">Term</A></B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../JSHOP2/Term.html#isNil()">isNil</A>, <A HREF="../JSHOP2/Term.html#merge(JSHOP2.Term[][], int)">merge</A>, <A HREF="../JSHOP2/Term.html#merge(JSHOP2.Term[], JSHOP2.Term[])">merge</A>, <A HREF="../JSHOP2/Term.html#print()">print</A></CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><A NAME="field_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" 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