indexfile.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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<B>Constructor Detail</B></FONT></TD>
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<A NAME="IndexFile(java.nio.channels.ReadableByteChannel)"><!-- --></A><H3>
IndexFile</H3>
<PRE>
public <B>IndexFile</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/nio/channels/ReadableByteChannel.html" title="class or interface in java.nio.channels">ReadableByteChannel</A>&nbsp;channel)
          throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD>Load the index file from the given channel.
<P>
<DT><B>Parameters:</B><DD><CODE>channel</CODE> - The channel to read from.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - If an error occurs.</DL>
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<A NAME="IndexFile(java.nio.channels.ReadableByteChannel, boolean)"><!-- --></A><H3>
IndexFile</H3>
<PRE>
public <B>IndexFile</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/nio/channels/ReadableByteChannel.html" title="class or interface in java.nio.channels">ReadableByteChannel</A>&nbsp;channel,
                 boolean&nbsp;useMemoryMappedBuffer)
          throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD>Load the index file from the given channel.
<P>
<DT><B>Parameters:</B><DD><CODE>channel</CODE> - The channel to read from.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - If an error occurs.</DL>

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<B>Method Detail</B></FONT></TD>
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<A NAME="getHeader()"><!-- --></A><H3>
getHeader</H3>
<PRE>
public <A HREF="../../../../../org/geotools/data/shapefile/shp/ShapefileHeader.html" title="class in org.geotools.data.shapefile.shp">ShapefileHeader</A> <B>getHeader</B>()</PRE>
<DL>
<DD>Get the header of this index file.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>The header of the index file.</DL>
</DD>
</DL>
<HR>

<A NAME="close()"><!-- --></A><H3>
close</H3>
<PRE>
public void <B>close</B>()
           throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE></DL>
</DD>
</DL>
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<A NAME="finalize()"><!-- --></A><H3>
finalize</H3>
<PRE>
protected void <B>finalize</B>()
                 throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Throwable.html" title="class or interface in java.lang">Throwable</A></PRE>
<DL>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Throwable.html" title="class or interface in java.lang">Throwable</A></CODE><DT><B>See Also:</B><DD><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#finalize()" title="class or interface in java.lang"><CODE>Object.finalize()</CODE></A></DL>
</DD>
</DL>
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<A NAME="getRecordCount()"><!-- --></A><H3>
getRecordCount</H3>
<PRE>
public int <B>getRecordCount</B>()</PRE>
<DL>
<DD>Get the number of records in this index.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>The number of records.</DL>
</DD>
</DL>
<HR>

<A NAME="getOffset(int)"><!-- --></A><H3>
getOffset</H3>
<PRE>
public int <B>getOffset</B>(int&nbsp;index)
              throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD>Get the offset of the record (in 16-bit words).
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>index</CODE> - The index, from 0 to getRecordCount - 1
<DT><B>Returns:</B><DD>The offset in 16-bit words.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getOffsetInBytes(int)"><!-- --></A><H3>
getOffsetInBytes</H3>
<PRE>
public int <B>getOffsetInBytes</B>(int&nbsp;index)
                     throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD>Get the offset of the record (in real bytes, not 16-bit words).
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>index</CODE> - The index, from 0 to getRecordCount - 1
<DT><B>Returns:</B><DD>The offset in bytes.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getContentLength(int)"><!-- --></A><H3>
getContentLength</H3>
<PRE>
public int <B>getContentLength</B>(int&nbsp;index)
                     throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD>Get the content length of the given record in bytes, not 16 bit words.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>index</CODE> - The index, from 0 to getRecordCount - 1
<DT><B>Returns:</B><DD>The lengh in bytes of the record.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE></DL>
</DD>
</DL>
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