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HeapFile
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SUMMARY: NESTED | <A HREF="#fields_inherited_from_class_neustore.base.DBIndex">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD>
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neustore.heapfile</FONT>
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Class HeapFile</H2>
<PRE>
java.lang.Object
<IMG SRC="../../resources/inherit.gif" ALT="extended by"><A HREF="../../neustore/base/DBIndex.html" title="class in neustore.base">neustore.base.DBIndex</A>
<IMG SRC="../../resources/inherit.gif" ALT="extended by"><B>neustore.heapfile.HeapFile</B>
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<DT>public class <B>HeapFile</B><DT>extends <A HREF="../../neustore/base/DBIndex.html" title="class in neustore.base">DBIndex</A></DL>
<P>
A generic heap file that stores a list of (key, data) pairs. <ul> <li> It is generic in the sense that the user can implement her own classes for the key and the data. To enable this generic feature, the constructor of the HeapFile takes as parameter a sample key and a sample data. <li> The user may <A HREF="../../neustore/heapfile/HeapFile.html#insert(neustore.base.Key, neustore.base.Data)"><CODE>insert(neustore.base.Key, neustore.base.Data)</CODE></A>, <A HREF="../../neustore/heapfile/HeapFile.html#delete(neustore.base.Key)"><CODE>delete(neustore.base.Key)</CODE></A>, and <A HREF="../../neustore/heapfile/HeapFile.html#search(neustore.base.Key)"><CODE>search(neustore.base.Key)</CODE></A> a record. </ul>
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<DT><B>Author:</B></DT> <DD>Donghui Zhang <donghui@ccs.neu.edu></DD><DT><B>See Also:</B><DD><A HREF="../../neustore/heapfile/HeapFilePage.html" title="class in neustore.heapfile"><CODE>HeapFilePage</CODE></A></DL>
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<TD><B>Fields inherited from class neustore.base.<A HREF="../../neustore/base/DBIndex.html" title="class in neustore.base">DBIndex</A></B></TD>
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<TD><CODE><A HREF="../../neustore/base/DBIndex.html#buffer">buffer</A>, <A HREF="../../neustore/base/DBIndex.html#CREATE">CREATE</A>, <A HREF="../../neustore/base/DBIndex.html#OPEN">OPEN</A></CODE></TD>
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<B>Constructor Summary</B></FONT></TD>
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<TD><CODE><B><A HREF="../../neustore/heapfile/HeapFile.html#HeapFile(neustore.base.DBBuffer, java.lang.String, boolean, neustore.base.Key, neustore.base.Data)">HeapFile</A></B>(<A HREF="../../neustore/base/DBBuffer.html" title="class in neustore.base">DBBuffer</A> _buffer, java.lang.String filename, boolean isCreate, <A HREF="../../neustore/base/Key.html" title="interface in neustore.base">Key</A> _sampleKey, <A HREF="../../neustore/base/Data.html" title="interface in neustore.base">Data</A> _sampleData)</CODE>
<BR>
The HeapFile constructor. </TD>
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<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../neustore/heapfile/HeapFile.html#delete(neustore.base.Key)">delete</A></B>(<A HREF="../../neustore/base/Key.html" title="interface in neustore.base">Key</A> key)</CODE>
<BR>
Deletes the record by the given key. </TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../neustore/heapfile/HeapFile.html#insert(neustore.base.Key, neustore.base.Data)">insert</A></B>(<A HREF="../../neustore/base/Key.html" title="interface in neustore.base">Key</A> key, <A HREF="../../neustore/base/Data.html" title="interface in neustore.base">Data</A> data)</CODE>
<BR>
Inserts a new record into the heap file. </TD>
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<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../neustore/heapfile/HeapFile.html#numRecs()">numRecs</A></B>()</CODE>
<BR>
Returns the number of records.</TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../neustore/heapfile/HeapFile.html#printInformation()">printInformation</A></B>()</CODE>
<BR>
Prints some information about the index.</TD>
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<CODE> <A HREF="../../neustore/base/Data.html" title="interface in neustore.base">Data</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../neustore/heapfile/HeapFile.html#search(neustore.base.Key)">search</A></B>(<A HREF="../../neustore/base/Key.html" title="interface in neustore.base">Key</A> key)</CODE>
<BR>
Searches the record by the given key.</TD>
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