btree.html

jxta的api库

 provided BTreeNode's page number.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>root</CODE> - The root to reset<DD><CODE>newRoot</CODE> - the new root node to use
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE>
<DD><CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/filer/BTreeException.html" title="class in net.jxta.impl.xindice.core.filer">BTreeException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="setRootNode(net.jxta.impl.xindice.core.filer.BTree.BTreeNode)"><!-- --></A><H3>
setRootNode</H3>
<PRE>
protected final void <B>setRootNode</B>(net.jxta.impl.xindice.core.filer.BTree.BTreeNode&nbsp;rootNode)
                          throws java.io.IOException,
                                 <A HREF="../../../../../../net/jxta/impl/xindice/core/filer/BTreeException.html" title="class in net.jxta.impl.xindice.core.filer">BTreeException</A></PRE>
<DL>
<DD>setRootNode resets the file's root to the provided
 BTreeNode's page number.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>rootNode</CODE> - the new root node to use
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE>
<DD><CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/filer/BTreeException.html" title="class in net.jxta.impl.xindice.core.filer">BTreeException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getRootNode(net.jxta.impl.xindice.core.filer.BTree.BTreeRootInfo)"><!-- --></A><H3>
getRootNode</H3>
<PRE>
protected final net.jxta.impl.xindice.core.filer.BTree.BTreeNode <B>getRootNode</B>(<A HREF="../../../../../../net/jxta/impl/xindice/core/filer/BTree.BTreeRootInfo.html" title="class in net.jxta.impl.xindice.core.filer">BTree.BTreeRootInfo</A>&nbsp;root)</PRE>
<DL>
<DD>getRootNode retreives the BTree node for the specified
 root object.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>root</CODE> - The root object to retrieve with
<DT><B>Returns:</B><DD>The root node</DL>
</DD>
</DL>
<HR>

<A NAME="getRootNode()"><!-- --></A><H3>
getRootNode</H3>
<PRE>
protected final net.jxta.impl.xindice.core.filer.BTree.BTreeNode <B>getRootNode</B>()</PRE>
<DL>
<DD>getRootNode retreives the BTree node for the file's root.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>The root node</DL>
</DD>
</DL>
<HR>

<A NAME="createFileHeader()"><!-- --></A><H3>
createFileHeader</H3>
<PRE>
public <A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.FileHeader.html" title="class in net.jxta.impl.xindice.core.filer">Paged.FileHeader</A> <B>createFileHeader</B>()</PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.html" title="class in net.jxta.impl.xindice.core.filer">Paged</A></CODE></B></DD>
<DD>createFileHeader must be implemented by a Paged implementation
 in order to create an appropriate subclass instance of a FileHeader.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.html#createFileHeader()">createFileHeader</A></CODE> in class <CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.html" title="class in net.jxta.impl.xindice.core.filer">Paged</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>a new FileHeader</DL>
</DD>
</DL>
<HR>

<A NAME="createFileHeader(boolean)"><!-- --></A><H3>
createFileHeader</H3>
<PRE>
public <A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.FileHeader.html" title="class in net.jxta.impl.xindice.core.filer">Paged.FileHeader</A> <B>createFileHeader</B>(boolean&nbsp;read)
                                  throws java.io.IOException</PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.html" title="class in net.jxta.impl.xindice.core.filer">Paged</A></CODE></B></DD>
<DD>createFileHeader must be implemented by a Paged implementation
 in order to create an appropriate subclass instance of a FileHeader.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.html#createFileHeader(boolean)">createFileHeader</A></CODE> in class <CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.html" title="class in net.jxta.impl.xindice.core.filer">Paged</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>read</CODE> - If true, reads the FileHeader from disk
<DT><B>Returns:</B><DD>a new FileHeader
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if an exception occurs</DL>
</DD>
</DL>
<HR>

<A NAME="createFileHeader(long)"><!-- --></A><H3>
createFileHeader</H3>
<PRE>
public <A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.FileHeader.html" title="class in net.jxta.impl.xindice.core.filer">Paged.FileHeader</A> <B>createFileHeader</B>(long&nbsp;pageCount)</PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.html" title="class in net.jxta.impl.xindice.core.filer">Paged</A></CODE></B></DD>
<DD>createFileHeader must be implemented by a Paged implementation
 in order to create an appropriate subclass instance of a FileHeader.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.html#createFileHeader(long)">createFileHeader</A></CODE> in class <CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.html" title="class in net.jxta.impl.xindice.core.filer">Paged</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>pageCount</CODE> - The number of pages to allocate for primary storage
<DT><B>Returns:</B><DD>a new FileHeader</DL>
</DD>
</DL>
<HR>

<A NAME="createFileHeader(long, int)"><!-- --></A><H3>
createFileHeader</H3>
<PRE>
public <A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.FileHeader.html" title="class in net.jxta.impl.xindice.core.filer">Paged.FileHeader</A> <B>createFileHeader</B>(long&nbsp;pageCount,
                                         int&nbsp;pageSize)</PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.html" title="class in net.jxta.impl.xindice.core.filer">Paged</A></CODE></B></DD>
<DD>createFileHeader must be implemented by a Paged implementation
 in order to create an appropriate subclass instance of a FileHeader.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.html#createFileHeader(long, int)">createFileHeader</A></CODE> in class <CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.html" title="class in net.jxta.impl.xindice.core.filer">Paged</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>pageCount</CODE> - The number of pages to allocate for primary storage<DD><CODE>pageSize</CODE> - The size of a Page (should be a multiple of a FS block)
<DT><B>Returns:</B><DD>a new FileHeader</DL>
</DD>
</DL>
<HR>

<A NAME="createPageHeader()"><!-- --></A><H3>
createPageHeader</H3>
<PRE>
public <A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.PageHeader.html" title="class in net.jxta.impl.xindice.core.filer">Paged.PageHeader</A> <B>createPageHeader</B>()</PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.html" title="class in net.jxta.impl.xindice.core.filer">Paged</A></CODE></B></DD>
<DD>createPageHeader must be implemented by a Paged implementation
 in order to create an appropriate subclass instance of a PageHeader.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.html#createPageHeader()">createPageHeader</A></CODE> in class <CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/filer/Paged.html" title="class in net.jxta.impl.xindice.core.filer">Paged</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>a new PageHeader</DL>
</DD>
</DL>
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