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FileHdr
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SUMMARY: NESTED | <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 FileHdr</H2>
<PRE>
java.lang.Object
<IMG SRC="../resources/inherit.gif" ALT="extended by"><B>rtree.FileHdr</B>
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<DL>
<DT>public class <B>FileHdr</B><DT>extends java.lang.Object</DL>
<P>
This class is the handler for the file.
<P>
<P>
<DL>
<DT><B>Author:</B></DT> <DD>Prachuryya Barua</DD></DL>
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<!-- ======== NESTED CLASS SUMMARY ======== -->
<!-- =========== FIELD SUMMARY =========== -->
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<B>Field Summary</B></FONT></TD>
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<CODE>private boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#dirty">dirty</A></B></CODE>
<BR>
</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>private java.io.RandomAccessFile</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#file">file</A></B></CODE>
<BR>
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<CODE>private boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#interested">interested</A></B></CODE>
<BR>
If any write thread is interested then increment this.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>(package private) long</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#rootIndex">rootIndex</A></B></CODE>
<BR>
the index of the root</TD>
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<CODE>private int[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#S">S</A></B></CODE>
<BR>
The stack data.</TD>
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<CODE>(package private) int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#stkLimit">stkLimit</A></B></CODE>
<BR>
Overflow limit</TD>
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<CODE>private int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#topIdx">topIdx</A></B></CODE>
<BR>
Index of the top most element</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>(package private) int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#totalNodes">totalNodes</A></B></CODE>
<BR>
total no.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>private java.util.Vector</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#waiters">waiters</A></B></CODE>
<BR>
The wait thread queue</TD>
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<CODE>protected boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#writeThr">writeThr</A></B></CODE>
<BR>
------------local variables--------------------------------------</TD>
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<CODE>(package private)</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#FileHdr(int, java.lang.String)">FileHdr</A></B>(int stkLimit, java.lang.String fileName)</CODE>
<BR>
Although this 'stack' is part of the file header but it acts totally independently of the rest of the file header.</TD>
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<B>Method Summary</B></FONT></TD>
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<CODE>protected void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#finalize()">finalize</A></B>()</CODE>
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<CODE>private int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#firstWriter()">firstWriter</A></B>()</CODE>
<BR>
retuns the index of the first WRITE thread in the queue</TD>
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<CODE>(package private) void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#flush()">flush</A></B>()</CODE>
<BR>
Will flush the file header if it is dirty.</TD>
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<CODE> java.io.RandomAccessFile</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#getFile()">getFile</A></B>()</CODE>
<BR>
Returns the <code>RandomAccessFile</code> object</TD>
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<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="../rtree/FileHdr.html#getIndex(java.lang.Thread)">getIndex</A></B>(java.lang.Thread t)</CODE>
<BR>
</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> long</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#getRootIndex()">getRootIndex</A></B>()</CODE>
<BR>
</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static long</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#getRootIndex(java.lang.String)">getRootIndex</A></B>(java.lang.String fileName)</CODE>
<BR>
<B>Deprecated.</B> <I>Use the non static one.</I></TD>
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<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="../rtree/FileHdr.html#getTotalNodes()">getTotalNodes</A></B>()</CODE>
<BR>
Will return the total nodes in the tree.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>(package private) java.util.Vector</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#getWaiters()">getWaiters</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="../rtree/FileHdr.html#isWriteThr()">isWriteThr</A></B>()</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="../rtree/FileHdr.html#lockRead()">lockRead</A></B>()</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="../rtree/FileHdr.html#lockWrite()">lockWrite</A></B>()</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>(package private) int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#peep(int)">peep</A></B>(int index)</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>(package private) int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../rtree/FileHdr.html#pop()">pop</A></B>()</CODE>
<BR>
</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>(package private) void</CODE></FONT></TD>
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