wfsfeaturesource.wfsfeatureresults.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

<A NAME="reader()"><!-- --></A><H3>
reader</H3>
<PRE>
public <A HREF="../../../../org/geotools/data/FeatureReader.html" title="interface in org.geotools.data">FeatureReader</A> <B>reader</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><B>Description copied from interface: <CODE><A HREF="../../../../org/geotools/data/FeatureResults.html" title="interface in org.geotools.data">FeatureResults</A></CODE></B></DD>
<DD>Provides access to the Features, please note that FeatureReader is a
 blocking api.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/FeatureResults.html#reader()">reader</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/data/FeatureResults.html" title="interface in org.geotools.data">FeatureResults</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/geotools/data/DefaultFeatureResults.html#reader()">reader</A></CODE> in class <CODE><A HREF="../../../../org/geotools/data/DefaultFeatureResults.html" title="class in org.geotools.data">DefaultFeatureResults</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>FeatureReader for this Query
<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 results could not be obtained<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/data/FeatureResults.html#reader()"><CODE>FeatureResults.reader()</CODE></A></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>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/geotools/data/FeatureResults.html" title="interface in org.geotools.data">FeatureResults</A></CODE></B></DD>
<DD>Returns the bounding box of this FeatureResults.

 <p>
 This opperation may be expensive. Consider
 <code>FeatureSource.getBounds( Query )</code> as an alternative.
 </p>
 This method is logically the same as:
 <pre>
 <code>
 <b>public</b> Envelope getBounds() <b>throws</b> IOException {
     Envelope newBBox = <b>new</b> Envelope();
     Envelope internal;
     Feature feature;

     <b>for</b> (FeatureReader r = reader(); r.hasNext();) {
         feature = r.next();
         internal = feature.getDefaultGeometry().getEnvelopeInternal();
         newBBox.expandToInclude(internal);
     }
     <b>return</b> newBBox;
 }
 </code>
 </pre>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/FeatureResults.html#getBounds()">getBounds</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/data/FeatureResults.html" title="interface in org.geotools.data">FeatureResults</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/geotools/data/DefaultFeatureResults.html#getBounds()">getBounds</A></CODE> in class <CODE><A HREF="../../../../org/geotools/data/DefaultFeatureResults.html" title="class in org.geotools.data">DefaultFeatureResults</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/data/FeatureResults.html#getBounds()"><CODE>FeatureResults.getBounds()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getCount()"><!-- --></A><H3>
getCount</H3>
<PRE>
public int <B>getCount</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><B>Description copied from interface: <CODE><A HREF="../../../../org/geotools/data/FeatureResults.html" title="interface in org.geotools.data">FeatureResults</A></CODE></B></DD>
<DD>Returns the number of Features in this FeatureResults.

 <p>
 This opperation may be expensive. Consider <code>FeatureSource.getCount(
 Query )</code> as an alternative.
 </p>
 This method is logically the same as:
 <pre>
 <code>
 <b>public</b> int getCount() <b>throws</b> IOException {
     <b>int</b> count = 0;
     <b>for</b> (FeatureReader r = reader(); r.hasNext(); count++) {
         r.next();
     }
     <b>return</b> count;
 }
 </code>
 </pre>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/FeatureResults.html#getCount()">getCount</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/data/FeatureResults.html" title="interface in org.geotools.data">FeatureResults</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/geotools/data/DefaultFeatureResults.html#getCount()">getCount</A></CODE> in class <CODE><A HREF="../../../../org/geotools/data/DefaultFeatureResults.html" title="class in org.geotools.data">DefaultFeatureResults</A></CODE></DL>
</DD>
<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> - If feature could not be read<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/data/FeatureResults.html#getCount()"><CODE>FeatureResults.getCount()</CODE></A></DL>
</DD>
</DL>
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