rolapdimension.html

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RolapDimension (Mondrian OLAP Server, version 3.0.4.11371)
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  SUMMARY:&nbsp;NESTED&nbsp;|&nbsp;<A HREF="#fields_inherited_from_class_mondrian.olap.DimensionBase">FIELD</A>&nbsp;|&nbsp;<A HREF="#constructor_summary">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_summary">METHOD</A></FONT></TD>
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mondrian.rolap</FONT>
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Class RolapDimension</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 "><A HREF="../../mondrian/olap/OlapElementBase.html" title="class in mondrian.olap">mondrian.olap.OlapElementBase</A>
      <IMG SRC="../../resources/inherit.gif" ALT="extended by "><A HREF="../../mondrian/olap/DimensionBase.html" title="class in mondrian.olap">mondrian.olap.DimensionBase</A>
          <IMG SRC="../../resources/inherit.gif" ALT="extended by "><B>mondrian.rolap.RolapDimension</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../mondrian/olap/Dimension.html" title="interface in mondrian.olap">Dimension</A>, <A HREF="../../mondrian/olap/OlapElement.html" title="interface in mondrian.olap">OlapElement</A></DD>
</DL>
<DL>
<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../mondrian/rolap/RolapCubeDimension.html" title="class in mondrian.rolap">RolapCubeDimension</A></DD>
</DL>
<HR>
<DL>
<DT><PRE> class <B>RolapDimension</B><DT>extends <A HREF="../../mondrian/olap/DimensionBase.html" title="class in mondrian.olap">DimensionBase</A></DL>
</PRE>

<P>
<code>RolapDimension</code> implements <A HREF="../../mondrian/olap/Dimension.html" title="interface in mondrian.olap"><CODE>Dimension</CODE></A>for a ROLAP
 database.

 <h2><a name="topic_ordinals">Topic: Dimension ordinals </a></h2>

 <A HREF="../../mondrian/rolap/RolapEvaluator.html" title="class in mondrian.rolap"><CODE>RolapEvaluator</CODE></A> needs each dimension to have an ordinal, so that it
 can store the evaluation context as an array of members.

 <p>
 The ordinal of a dimension <em>within a particular cube</em> is found by
 calling <A HREF="../../mondrian/rolap/RolapDimension.html#getOrdinal(mondrian.olap.Cube)"><CODE>getOrdinal(Cube)</CODE></A>. Ordinals
 are contiguous and zero-based. Zero is always the <code>[Measures]</code>
 dimension.

 <p>
 A dimension may be either shared or private to a particular cube. The
 dimension object doesn't actually know which; <A HREF="../../mondrian/olap/Schema.html" title="interface in mondrian.olap"><CODE>Schema</CODE></A> has a list of
 shared hierarchies (<A HREF="../../mondrian/olap/Schema.html#getSharedHierarchies()"><CODE>Schema.getSharedHierarchies()</CODE></A>), and <A HREF="../../mondrian/olap/Cube.html" title="interface in mondrian.olap"><CODE>Cube</CODE></A>
 has a list of dimensions (<A HREF="../../mondrian/olap/Cube.html#getDimensions()"><CODE>Cube.getDimensions()</CODE></A>).

 <p>
 If a dimension is shared between several cubes, the <A HREF="../../mondrian/olap/Dimension.html" title="interface in mondrian.olap"><CODE>Dimension</CODE></A>objects
 which represent them may (or may not be) the same. (That's why there's no
 <code>getCube()</code> method.)

 <p>
 Furthermore, since members are created by a <A HREF="../../mondrian/rolap/MemberReader.html" title="interface in mondrian.rolap"><CODE>MemberReader</CODE></A>which
 belongs to the <A HREF="../../mondrian/rolap/RolapHierarchy.html" title="class in mondrian.rolap"><CODE>RolapHierarchy</CODE></A>, you will the members will be the same
 too. For example, if you query <code>[Product].[Beer]</code> from the
 <code>Sales</code> and <code>Warehouse</code> cubes, you will get the
 same <A HREF="../../mondrian/rolap/RolapMember.html" title="class in mondrian.rolap"><CODE>RolapMember</CODE></A>object.
 (<A HREF="../../mondrian/rolap/RolapSchema.html#mapSharedHierarchyToReader"><CODE>RolapSchema.mapSharedHierarchyToReader</CODE></A> holds the mapping. I don't
 know whether it's still necessary.)
<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/RolapDimension.java#3 $</DD>
<DT><B>Author:</B></DT>
  <DD>jhyde</DD>
</DL>
<HR>

<P>
<!-- =========== FIELD SUMMARY =========== -->

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<B>Field Summary</B></FONT></TH>
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</TABLE>
&nbsp;<A NAME="fields_inherited_from_class_mondrian.olap.DimensionBase"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Fields inherited from class mondrian.olap.<A HREF="../../mondrian/olap/DimensionBase.html" title="class in mondrian.olap">DimensionBase</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../mondrian/olap/DimensionBase.html#description">description</A>, <A HREF="../../mondrian/olap/DimensionBase.html#dimensionType">dimensionType</A>, <A HREF="../../mondrian/olap/DimensionBase.html#hierarchies">hierarchies</A>, <A HREF="../../mondrian/olap/DimensionBase.html#name">name</A>, <A HREF="../../mondrian/olap/DimensionBase.html#uniqueName">uniqueName</A></CODE></TD>
</TR>
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&nbsp;<A NAME="fields_inherited_from_class_mondrian.olap.OlapElementBase"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Fields inherited from class mondrian.olap.<A HREF="../../mondrian/olap/OlapElementBase.html" title="class in mondrian.olap">OlapElementBase</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../mondrian/olap/OlapElementBase.html#caption">caption</A></CODE></TD>
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&nbsp;<A NAME="fields_inherited_from_class_mondrian.olap.Dimension"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Fields inherited from interface mondrian.olap.<A HREF="../../mondrian/olap/Dimension.html" title="interface in mondrian.olap">Dimension</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../mondrian/olap/Dimension.html#MEASURES_NAME">MEASURES_NAME</A>, <A HREF="../../mondrian/olap/Dimension.html#MEASURES_UNIQUE_NAME">MEASURES_UNIQUE_NAME</A></CODE></TD>
</TR>
</TABLE>
&nbsp;
<!-- ======== CONSTRUCTOR SUMMARY ======== -->

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<B>Constructor Summary</B></FONT></TH>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../mondrian/rolap/RolapDimension.html#RolapDimension(mondrian.rolap.RolapSchema, mondrian.rolap.RolapCube, mondrian.olap.MondrianDef.Dimension, mondrian.olap.MondrianDef.CubeDimension)">RolapDimension</A></B>(<A HREF="../../mondrian/rolap/RolapSchema.html" title="class in mondrian.rolap">RolapSchema</A>&nbsp;schema,
               <A HREF="../../mondrian/rolap/RolapCube.html" title="class in mondrian.rolap">RolapCube</A>&nbsp;cube,
               <A HREF="../../mondrian/olap/MondrianDef.Dimension.html" title="class in mondrian.olap">MondrianDef.Dimension</A>&nbsp;xmlDimension,
               <A HREF="../../mondrian/olap/MondrianDef.CubeDimension.html" title="class in mondrian.olap">MondrianDef.CubeDimension</A>&nbsp;xmlCubeDimension)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Creates a dimension from an XML definition.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../mondrian/rolap/RolapDimension.html#RolapDimension(mondrian.olap.Schema, java.lang.String, mondrian.olap.DimensionType)">RolapDimension</A></B>(<A HREF="../../mondrian/olap/Schema.html" title="interface in mondrian.olap">Schema</A>&nbsp;schema,
               <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;name,
               <A HREF="../../mondrian/olap/DimensionType.html" title="enum in mondrian.olap">DimensionType</A>&nbsp;dimensionType)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
</TABLE>
&nbsp;
<!-- ========== METHOD SUMMARY =========== -->

<A NAME="method_summary"><!-- --></A>
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<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>&nbsp;<A HREF="../../mondrian/olap/Hierarchy.html" title="interface in mondrian.olap">Hierarchy</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../mondrian/rolap/RolapDimension.html#getHierarchy()">getHierarchy</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the hierarchy of an expression.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;org.apache.log4j.Logger</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../mondrian/rolap/RolapDimension.html#getLogger()">getLogger</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../mondrian/rolap/RolapDimension.html#getOrdinal(mondrian.olap.Cube)">getOrdinal</A></B>(<A HREF="../../mondrian/olap/Cube.html" title="interface in mondrian.olap">Cube</A>&nbsp;cube)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns dimension's ordinal within a given cube.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../mondrian/olap/Schema.html" title="interface in mondrian.olap">Schema</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../mondrian/rolap/RolapDimension.html#getSchema()">getSchema</A></B>()</CODE>