pagestore.html

Geotools是一个开源的Java GIS工具包,可利用它来开发符合标准的地理信息系统。Geotools提供了OGC(Open Geospatial Consortium)规范的一个实现来作为他们的

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<CODE>abstract &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/index/rtree/PageStore.html#free(org.geotools.index.rtree.Node)">free</A></B>(<A HREF="../../../../org/geotools/index/rtree/Node.html" title="class in org.geotools.index.rtree">Node</A>&nbsp;node)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Frees resources used by this <code>Node</code></TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/geotools/index/DataDefinition.html" title="class in org.geotools.index">DataDefinition</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/index/rtree/PageStore.html#getDataDefinition()">getDataDefinition</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;DOCUMENT ME!</TD>
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<CODE>abstract &nbsp;<A HREF="../../../../org/geotools/index/rtree/Node.html" title="class in org.geotools.index.rtree">Node</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/index/rtree/PageStore.html#getEmptyNode(boolean)">getEmptyNode</A></B>(boolean&nbsp;isLeaf)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;DOCUMENT ME!</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/index/rtree/PageStore.html#getMaxNodeEntries()">getMaxNodeEntries</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;DOCUMENT ME!</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/index/rtree/PageStore.html#getMinNodeEntries()">getMinNodeEntries</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;DOCUMENT ME!</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract &nbsp;<A HREF="../../../../org/geotools/index/rtree/Node.html" title="class in org.geotools.index.rtree">Node</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/index/rtree/PageStore.html#getNode(org.geotools.index.rtree.Entry, org.geotools.index.rtree.Node)">getNode</A></B>(<A HREF="../../../../org/geotools/index/rtree/Entry.html" title="class in org.geotools.index.rtree">Entry</A>&nbsp;parentEntry,
        <A HREF="../../../../org/geotools/index/rtree/Node.html" title="class in org.geotools.index.rtree">Node</A>&nbsp;parent)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the Node pointed by this entry and having this Node as parent</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/geotools/index/Lock.html" title="interface in org.geotools.index">Lock</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/index/rtree/PageStore.html#getReadLock()">getReadLock</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Aquires a read lock to the store</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract &nbsp;<A HREF="../../../../org/geotools/index/rtree/Node.html" title="class in org.geotools.index.rtree">Node</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/index/rtree/PageStore.html#getRoot()">getRoot</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;DOCUMENT ME!</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;short</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/index/rtree/PageStore.html#getSplitAlgorithm()">getSplitAlgorithm</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;DOCUMENT ME!</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/geotools/index/Lock.html" title="interface in org.geotools.index">Lock</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/index/rtree/PageStore.html#getWriteLock()">getWriteLock</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Aquires a write lock to the store</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/index/rtree/PageStore.html#releaseLock(org.geotools.index.Lock)">releaseLock</A></B>(<A HREF="../../../../org/geotools/index/Lock.html" title="interface in org.geotools.index">Lock</A>&nbsp;lock)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;DOCUMENT ME!</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/index/rtree/PageStore.html#setRoot(org.geotools.index.rtree.Node)">setRoot</A></B>(<A HREF="../../../../org/geotools/index/rtree/Node.html" title="class in org.geotools.index.rtree">Node</A>&nbsp;node)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;DOCUMENT ME!</TD>
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&nbsp;<A NAME="methods_inherited_from_class_Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TD><B>Methods inherited from class <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></B></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
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<!-- ============ FIELD DETAIL =========== -->

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<TD COLSPAN=1><FONT SIZE="+2">
<B>Field Detail</B></FONT></TD>
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<A NAME="SPLIT_QUADRATIC"><!-- --></A><H3>
SPLIT_QUADRATIC</H3>
<PRE>
public static final short <B>SPLIT_QUADRATIC</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.geotools.index.rtree.PageStore.SPLIT_QUADRATIC">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="SPLIT_LINEAR"><!-- --></A><H3>
SPLIT_LINEAR</H3>
<PRE>
public static final short <B>SPLIT_LINEAR</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.geotools.index.rtree.PageStore.SPLIT_LINEAR">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="def"><!-- --></A><H3>
def</H3>
<PRE>
protected <A HREF="../../../../org/geotools/index/DataDefinition.html" title="class in org.geotools.index">DataDefinition</A> <B>def</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="maxNodeEntries"><!-- --></A><H3>
maxNodeEntries</H3>
<PRE>
protected int <B>maxNodeEntries</B></PRE>
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<DL>
</DL>
</DL>
<HR>

<A NAME="minNodeEntries"><!-- --></A><H3>
minNodeEntries</H3>
<PRE>
protected int <B>minNodeEntries</B></PRE>
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<DL>
</DL>
</DL>
<HR>

<A NAME="splitAlg"><!-- --></A><H3>
splitAlg</H3>
<PRE>
protected short <B>splitAlg</B></PRE>
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<DL>
</DL>
</DL>

<!-- ========= CONSTRUCTOR DETAIL ======== -->

<A NAME="constructor_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Constructor Detail</B></FONT></TD>
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<A NAME="PageStore()"><!-- --></A><H3>
PageStore</H3>
<PRE>
public <B>PageStore</B>()</PRE>
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</DL>
<HR>

<A NAME="PageStore(org.geotools.index.DataDefinition, int, int, short)"><!-- --></A><H3>
PageStore</H3>
<PRE>
public <B>PageStore</B>(<A HREF="../../../../org/geotools/index/DataDefinition.html" title="class in org.geotools.index">DataDefinition</A>&nbsp;def,
                 int&nbsp;maxNodeEntries,
                 int&nbsp;minNodeEntries,
                 short&nbsp;splitAlg)
          throws <A HREF="../../../../org/geotools/index/TreeException.html" title="class in org.geotools.index">TreeException</A></PRE>
<DL>
<DD>DOCUMENT ME!
<P>
<DT><B>Parameters:</B><DD><CODE>def</CODE> - <DD><CODE>maxNodeEntries</CODE> - <DD><CODE>minNodeEntries</CODE> - <DD><CODE>splitAlg</CODE> - 
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/geotools/index/TreeException.html" title="class in org.geotools.index">TreeException</A></CODE>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/UnsupportedOperationException.html" title="class or interface in java.lang">UnsupportedOperationException</A></CODE> - DOCUMENT ME!</DL>

<!-- ============ METHOD DETAIL ========== -->

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<B>Method Detail</B></FONT></TD>
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<A NAME="getRoot()"><!-- --></A><H3>
getRoot</H3>
<PRE>
public abstract <A HREF="../../../../org/geotools/index/rtree/Node.html" title="class in org.geotools.index.rtree">Node</A> <B>getRoot</B>()</PRE>
<DL>
<DD>DOCUMENT ME!
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setRoot(org.geotools.index.rtree.Node)"><!-- --></A><H3>
setRoot</H3>
<PRE>
public abstract void <B>setRoot</B>(<A HREF="../../../../org/geotools/index/rtree/Node.html" title="class in org.geotools.index.rtree">Node</A>&nbsp;node)
                      throws <A HREF="../../../../org/geotools/index/TreeException.html" title="class in org.geotools.index">TreeException</A></PRE>
<DL>
<DD>DOCUMENT ME!
<P>