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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_15) on Thu Jul 31 17:20:12 EDT 2008 --><TITLE>RolapEvaluator (Mondrian OLAP Server, version 3.0.4.11371)</TITLE><META NAME="keywords" CONTENT="mondrian.rolap.RolapEvaluator class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="RolapEvaluator (Mondrian OLAP Server, version 3.0.4.11371)";}</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="../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="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="../../mondrian/rolap/RolapDimension.html" title="class in mondrian.rolap"><B>PREV CLASS</B></A> <A HREF="../../mondrian/rolap/RolapEvaluator.RolapEvaluatorRoot.html" title="class in mondrian.rolap"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../index.html?mondrian/rolap/RolapEvaluator.html" target="_top"><B>FRAMES</B></A> <A HREF="RolapEvaluator.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: <A HREF="#nested_class_summary">NESTED</A> | <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">mondrian.rolap</FONT><BR>Class RolapEvaluator</H2><PRE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A> <IMG SRC="../../resources/inherit.gif" ALT="extended by "><B>mondrian.rolap.RolapEvaluator</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../mondrian/olap/Evaluator.html" title="interface in mondrian.olap">Evaluator</A></DD></DL><DL><DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../mondrian/rolap/RolapDependencyTestingEvaluator.html" title="class in mondrian.rolap">RolapDependencyTestingEvaluator</A></DD></DL><HR><DL><DT><PRE>public class <B>RolapEvaluator</B><DT>extends <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A><DT>implements <A HREF="../../mondrian/olap/Evaluator.html" title="interface in mondrian.olap">Evaluator</A></DL></PRE><P><code>RolapEvaluator</code> evaluates expressions in a dimensional environment. <p>The context contains a member (which may be the default member) for every dimension in the current cube. Certain operations, such as evaluating a calculated member or a tuple, change the current context. The evaluator's <A HREF="../../mondrian/rolap/RolapEvaluator.html#push(mondrian.olap.Member[])"><CODE>push(mondrian.olap.Member[])</CODE></A> method creates a clone of the current evaluator so that you can revert to the original context once the operation has completed. <h3>Developers note</h3> <p>Many of the methods in this class are performance-critical. Where possible they are declared 'final' so that the JVM can optimize calls to these methods. If future functionality requires it, the 'final' modifier can be removed and these methods can be overridden.<P><P><DL><DT><B>Since:</B></DT> <DD>10 August, 2001</DD><DT><B>Version:</B></DT> <DD>$Id: //open/mondrian-release/3.0/src/main/mondrian/rolap/RolapEvaluator.java#4 $</DD><DT><B>Author:</B></DT> <DD>jhyde</DD></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><A NAME="nested_class_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>Nested Class Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected static class</CODE></FONT></TD><TD><CODE><B><A HREF="../../mondrian/rolap/RolapEvaluator.RolapEvaluatorRoot.html" title="class in mondrian.rolap">RolapEvaluator.RolapEvaluatorRoot</A></B></CODE><BR> </TD></TR></TABLE> <!-- =========== 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>protected <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html" title="class or interface in java.util">List</A><<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html" title="class or interface in java.util">List</A><<A HREF="../../mondrian/rolap/RolapMember.html" title="class in mondrian.rolap">RolapMember</A>>></CODE></FONT></TD><TD><CODE><B><A HREF="../../mondrian/rolap/RolapEvaluator.html#aggregationLists">aggregationLists</A></B></CODE><BR> List of lists of tuples or members, rarely used, but overrides the ordinary dimensional context if set when a cell value comes to be evaluated.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../mondrian/rolap/CellReader.html" title="interface in mondrian.rolap">CellReader</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../mondrian/rolap/RolapEvaluator.html#cellReader">cellReader</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../mondrian/rolap/RolapEvaluator.RolapEvaluatorRoot.html" title="class in mondrian.rolap">RolapEvaluator.RolapEvaluatorRoot</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../mondrian/rolap/RolapEvaluator.html#root">root</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 ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> </CODE></FONT></TD><TD><CODE><B><A HREF="../../mondrian/rolap/RolapEvaluator.html#RolapEvaluator(mondrian.rolap.RolapEvaluator.RolapEvaluatorRoot)">RolapEvaluator</A></B>(<A HREF="../../mondrian/rolap/RolapEvaluator.RolapEvaluatorRoot.html" title="class in mondrian.rolap">RolapEvaluator.RolapEvaluatorRoot</A> root)</CODE><BR> Creates an evaluator with no parent.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected </CODE></FONT></TD><TD><CODE><B><A HREF="../../mondrian/rolap/RolapEvaluator.html#RolapEvaluator(mondrian.rolap.RolapEvaluator.RolapEvaluatorRoot, mondrian.rolap.RolapEvaluator)">RolapEvaluator</A></B>(<A HREF="../../mondrian/rolap/RolapEvaluator.RolapEvaluatorRoot.html" title="class in mondrian.rolap">RolapEvaluator.RolapEvaluatorRoot</A> root, <A HREF="../../mondrian/rolap/RolapEvaluator.html" title="class in mondrian.rolap">RolapEvaluator</A> parent)</CODE><BR> Creates an evaluator.</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>protected <A HREF="../../mondrian/rolap/RolapEvaluator.html" title="class in mondrian.rolap">RolapEvaluator</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../mondrian/rolap/RolapEvaluator.html#_push()">_push</A></B>()</CODE><BR> Creates a clone of the current validator.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>(package private) void</CODE></FONT></TD><TD><CODE><B><A HREF="../../mondrian/rolap/RolapEvaluator.html#addCalcMember(mondrian.olap.Member)">addCalcMember</A></B>(<A HREF="../../mondrian/olap/Member.html" title="interface in mondrian.olap">Member</A> member)</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../mondrian/rolap/RolapEvaluator.html#clearExpResultCache(boolean)">clearExpResultCache</A></B>(boolean clearValidResult)</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../mondrian/olap/Evaluator.html" title="interface in mondrian.olap">Evaluator</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../mondrian/rolap/RolapEvaluator.html#create(mondrian.olap.Query)">create</A></B>(<A HREF="../../mondrian/olap/Query.html" title="class in mondrian.olap">Query</A> query)</CODE><BR> Creates an evaluator.</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="../../mondrian/rolap/RolapEvaluator.html#equals(java.lang.Object)">equals</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> obj)</CODE><BR> Returns true if the other object is a <A HREF="../../mondrian/rolap/RolapEvaluator.html" title="class in mondrian.rolap"><CODE>RolapEvaluator</CODE></A> with identical context.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../mondrian/rolap/RolapEvaluator.html#evaluateCurrent()">evaluateCurrent</A></B>()</CODE>⌨️ 快捷键说明
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