defaultfeatureresults.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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<A NAME="getTransaction()"><!-- --></A><H3>
getTransaction</H3>
<PRE>
protected <A HREF="../../../org/geotools/data/Transaction.html" title="interface in org.geotools.data">Transaction</A> <B>getTransaction</B>()</PRE>
<DL>
<DD>Returns transaction from featureSource (if it is a FeatureStore), or
 Transaction.AUTO_COMMIT if it is not.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>Transacstion this FeatureResults opperates against</DL>
</DD>
</DL>
<HR>

<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>Retrieve a FeatureReader for this Query
<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>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#reader()">reader</A></CODE> in class <CODE><A HREF="../../../org/geotools/data/store/DataFeatureCollection.html" title="class in org.geotools.data.store">DataFeatureCollection</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</DL>
</DD>
</DL>
<HR>

<A NAME="boundsReader()"><!-- --></A><H3>
boundsReader</H3>
<PRE>
protected <A HREF="../../../org/geotools/data/FeatureReader.html" title="interface in org.geotools.data">FeatureReader</A> <B>boundsReader</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>Retrieve a FeatureReader for the geometry attributes only, designed for bounds computation
<P>
<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>
<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>Returns the bounding box of this FeatureResults

 <p>
 This implementation will generate the correct results from reader() if
 the provided FeatureSource does not provide an optimized result via
 FeatureSource.getBounds( Query ).
 </p>
 If the feature has no geometry, then an empty envelope is returned.
<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>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#getBounds()">getBounds</A></CODE> in class <CODE><A HREF="../../../org/geotools/data/store/DataFeatureCollection.html" title="class in org.geotools.data.store">DataFeatureCollection</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../org/geotools/data/DataSourceException.html" title="class in org.geotools.data">DataSourceException</A></CODE> - See IOException<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>Number of Features in this query.

 <p>
 This implementation will generate the correct results from reader() if
 the provided FeatureSource does not provide an optimized result via
 FeatureSource.getCount( Query ).
 </p>
<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>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#getCount()">getCount</A></CODE> in class <CODE><A HREF="../../../org/geotools/data/store/DataFeatureCollection.html" title="class in org.geotools.data.store">DataFeatureCollection</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
<DD><CODE><A HREF="../../../org/geotools/data/DataSourceException.html" title="class in org.geotools.data">DataSourceException</A></CODE> - See IOException<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/data/FeatureResults.html#getCount()"><CODE>FeatureResults.getCount()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="collection()"><!-- --></A><H3>
collection</H3>
<PRE>
public <A HREF="../../../org/geotools/feature/FeatureCollection.html" title="interface in org.geotools.feature">FeatureCollection</A> <B>collection</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>Convert this set of results to a FeatureCollection.

 <p>
 This method is logically the same as:
 <pre><code>
 <b>public</b> FeatureCollection collection() <b>throws</b> IOException {
     FeatureCollection collection = FeatureCollections.newCollection()
     <b>for</b> (FeatureReader r = reader(); r.hasNext();) {
         collection.add( r.next() );
     }
     <b>return</b> collection;
 }
 </code></pre>
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/data/FeatureResults.html#collection()">collection</A></CODE> in interface <CODE><A HREF="../../../org/geotools/data/FeatureResults.html" title="interface in org.geotools.data">FeatureResults</A></CODE><DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#collection()">collection</A></CODE> in class <CODE><A HREF="../../../org/geotools/data/store/DataFeatureCollection.html" title="class in org.geotools.data.store">DataFeatureCollection</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></DL>
</DD>
</DL>
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