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RTree: Class PageFile
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SUMMARY: INNER | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD>
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rtree</FONT>
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Class PageFile</H2>
<PRE>
java.lang.Object
|
+--<B>rtree.PageFile</B>
</PRE>
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<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../rtree/MemoryPageFile.html">MemoryPageFile</A>, <A HREF="../rtree/PersistentPageFile.html">PersistentPageFile</A></DD>
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<DT>public abstract class <B>PageFile</B><DT>extends java.lang.Object</DL>
<P>
Abstract class for all classes implementing a storage manager for the RTree. Every node should be stored in a unique page. The root node is always stored in page 0. The storage manager should have the control over the page numbers where each node should be stored. <p> Created: Tue May 18 16:24:00 1999 <p>
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<DT><B>Version: </B><DD>1.003</DD>
<DT><B>Author: </B><DD>Hadjieleftheriou Marios</DD>
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<CODE>protected int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/PageFile.html#dimension">dimension</A></B></CODE>
<BR>
Dimension of data inserted into the tree.</TD>
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<CODE>protected float</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/PageFile.html#fillFactor">fillFactor</A></B></CODE>
<BR>
fillFactor specifies minimum node entries present in each node. </TD>
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<CODE>protected int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/PageFile.html#nodeCapacity">nodeCapacity</A></B></CODE>
<BR>
Maximum node capacity. </TD>
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<CODE>protected int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/PageFile.html#pageSize">pageSize</A></B></CODE>
<BR>
The page size needed in bytes to store a full node. </TD>
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<CODE>protected <A HREF="../rtree/RTree.html">RTree</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/PageFile.html#tree">tree</A></B></CODE>
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<CODE>protected int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/PageFile.html#treeType">treeType</A></B></CODE>
<BR>
RTree variant used. </TD>
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<B>Constructor Summary</B></FONT></TD>
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<TD><CODE><B><A HREF="../rtree/PageFile.html#PageFile()">PageFile</A></B>()</CODE>
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<CODE>protected abstract <A HREF="../rtree/AbstractNode.html">AbstractNode</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/PageFile.html#deletePage(int)">deletePage</A></B>(int page)</CODE>
<BR>
Marks a specific page as empty.</TD>
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<CODE>protected void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/PageFile.html#finalize()">finalize</A></B>()</CODE>
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<CODE>protected void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/PageFile.html#initialize(rtree.RTree, int, float, int, int)">initialize</A></B>(<A HREF="../rtree/RTree.html">RTree</A> tree, int dimension, float fillFactor, int capacity, int treeType)</CODE>
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<CODE>protected abstract <A HREF="../rtree/AbstractNode.html">AbstractNode</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/PageFile.html#readNode(int)">readNode</A></B>(int page)</CODE>
<BR>
Returns the node stored in the requested page.</TD>
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<CODE>protected abstract int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/PageFile.html#writeNode(rtree.AbstractNode)">writeNode</A></B>(<A HREF="../rtree/AbstractNode.html">AbstractNode</A> o)</CODE>
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