defaultview.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

public void <B>removeFeatureListener</B>(<A HREF="../../../../org/geotools/data/FeatureListener.html" title="interface in org.geotools.data">FeatureListener</A>&nbsp;listener)</PRE>
<DL>
<DD>Implement removeFeatureListener.
 
 <p>
 Description ...
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/FeatureSource.html#removeFeatureListener(org.geotools.data.FeatureListener)">removeFeatureListener</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/data/FeatureSource.html" title="interface in org.geotools.data">FeatureSource</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>listener</CODE> - <DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/data/FeatureSource.html#removeFeatureListener(org.geotools.data.FeatureListener)"><CODE>FeatureSource.removeFeatureListener(org.geotools.data.FeatureListener)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getFeatures(org.geotools.data.Query)"><!-- --></A><H3>
getFeatures</H3>
<PRE>
public <A HREF="../../../../org/geotools/feature/FeatureCollection.html" title="interface in org.geotools.feature">FeatureCollection</A> <B>getFeatures</B>(<A HREF="../../../../org/geotools/data/Query.html" title="interface in org.geotools.data">Query</A>&nbsp;query)
                              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>Implement getFeatures.
 
 <p>
 Description ...
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/FeatureSource.html#getFeatures(org.geotools.data.Query)">getFeatures</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/data/FeatureSource.html" title="interface in org.geotools.data">FeatureSource</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>query</CODE> - 
<DT><B>Returns:</B><DD>@throws
         IOException
<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> - For all data source errors.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/data/FeatureSource.html#getFeatures(org.geotools.data.Query)"><CODE>FeatureSource.getFeatures(org.geotools.data.Query)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getFeatures(org.geotools.filter.Filter)"><!-- --></A><H3>
getFeatures</H3>
<PRE>
public <A HREF="../../../../org/geotools/feature/FeatureCollection.html" title="interface in org.geotools.feature">FeatureCollection</A> <B>getFeatures</B>(<A HREF="../../../../org/geotools/filter/Filter.html" title="interface in org.geotools.filter">Filter</A>&nbsp;filter)
                              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>Implement getFeatures.
 
 <p>
 Description ...
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/FeatureSource.html#getFeatures(org.geotools.filter.Filter)">getFeatures</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/data/FeatureSource.html" title="interface in org.geotools.data">FeatureSource</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>filter</CODE> - 
<DT><B>Returns:</B><DD>@throws
         IOException
<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> - For all data source errors.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/data/FeatureSource.html#getFeatures(org.geotools.filter.Filter)"><CODE>FeatureSource.getFeatures(org.geotools.filter.Filter)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getFeatures()"><!-- --></A><H3>
getFeatures</H3>
<PRE>
public <A HREF="../../../../org/geotools/feature/FeatureCollection.html" title="interface in org.geotools.feature">FeatureCollection</A> <B>getFeatures</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>Implement getFeatures.
 
 <p>
 Description ...
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/FeatureSource.html#getFeatures()">getFeatures</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/data/FeatureSource.html" title="interface in org.geotools.data">FeatureSource</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>@throws
         IOException
<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> - For all data source errors.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/data/FeatureSource.html#getFeatures()"><CODE>FeatureSource.getFeatures()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getSchema()"><!-- --></A><H3>
getSchema</H3>
<PRE>
public <A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A> <B>getSchema</B>()</PRE>
<DL>
<DD>Implement getSchema.
 
 <p>
 Description ...
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/FeatureSource.html#getSchema()">getSchema</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/data/FeatureSource.html" title="interface in org.geotools.data">FeatureSource</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>@see org.geotools.data.FeatureSource#getSchema()</DL>
</DD>
</DL>
<HR>

<A NAME="getBounds()"><!-- --></A><H3>
getBounds</H3>
<PRE>
public <A HREF="http://www.jump-project.org/docs/jts/1.7/api/com/vividsolutions/jts/geom/Envelope.html" title="class or interface in com.vividsolutions.jts.geom">Envelope</A> <B>getBounds</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>Retrieves the total extent of this FeatureSource.
 
 <p>
 Please note this extent will reflect the provided definitionQuery.
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/FeatureSource.html#getBounds()">getBounds</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/data/FeatureSource.html" title="interface in org.geotools.data">FeatureSource</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>Extent of this FeatureSource, or <code>null</code> if no
         optimizations exist.
<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 bounds of definitionQuery</DL>
</DD>
</DL>
<HR>

<A NAME="getBounds(org.geotools.data.Query)"><!-- --></A><H3>
getBounds</H3>
<PRE>
public <A HREF="http://www.jump-project.org/docs/jts/1.7/api/com/vividsolutions/jts/geom/Envelope.html" title="class or interface in com.vividsolutions.jts.geom">Envelope</A> <B>getBounds</B>(<A HREF="../../../../org/geotools/data/Query.html" title="interface in org.geotools.data">Query</A>&nbsp;query)
                   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>Retrive the extent of the Query.
 
 <p>
 This method provides access to an optimized getBounds opperation. If no
 optimized opperation is available <code>null</code> will be returned.
 </p>
 
 <p>
 You may still make use of getFeatures( Query ).getCount() which will
 return the correct answer (even if it has to itterate through all the
 results to do so.
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/FeatureSource.html#getBounds(org.geotools.data.Query)">getBounds</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/data/FeatureSource.html" title="interface in org.geotools.data">FeatureSource</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>query</CODE> - User's query
<DT><B>Returns:</B><DD>Extend of Query or <code>null</code> if no optimization is
         available
<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 a problem is encountered with source</DL>
</DD>
</DL>
<HR>

<A NAME="getCount(org.geotools.data.Query)"><!-- --></A><H3>
getCount</H3>
<PRE>
public int <B>getCount</B>(<A HREF="../../../../org/geotools/data/Query.html" title="interface in org.geotools.data">Query</A>&nbsp;query)</PRE>
<DL>
<DD>Adjust query and forward to source.
 
 <p>
 This method provides access to an optimized getCount opperation. If no
 optimized opperation is available <code>-1</code> will be returned.
 </p>
 
 <p>
 You may still make use of getFeatures( Query ).getCount() which will
 return the correct answer (even if it has to itterate through all the
 results to do so).
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/FeatureSource.html#getCount(org.geotools.data.Query)">getCount</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/data/FeatureSource.html" title="interface in org.geotools.data">FeatureSource</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>query</CODE> - User's query.
<DT><B>Returns:</B><DD>Number of Features for Query, or -1 if no optimization is
         available.</DL>
</DD>
</DL>
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