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

<TD COLSPAN=2><FONT SIZE="+2">
<B>Method Summary</B></FONT></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;<A HREF="../../../org/geotools/data/FeatureReader.html" title="interface in org.geotools.data">FeatureReader</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/data/DefaultFeatureResults.html#boundsReader()">boundsReader</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Retrieve a FeatureReader for the geometry attributes only, designed for bounds computation</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../org/geotools/feature/FeatureCollection.html" title="interface in org.geotools.feature">FeatureCollection</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/data/DefaultFeatureResults.html#collection()">collection</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Convert this set of results to a FeatureCollection.

 </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<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></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/data/DefaultFeatureResults.html#getBounds()">getBounds</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the bounding box of this FeatureResults

 
 This implementation will generate the correct results from reader() if
 the provided FeatureSource does not provide an optimized result via
 FeatureSource.getBounds( Query ).
 </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/data/DefaultFeatureResults.html#getCount()">getCount</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Number of Features in this query.

 </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/data/DefaultFeatureResults.html#getSchema()">getSchema</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;FeatureSchema for provided query.

 </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;<A HREF="../../../org/geotools/data/Transaction.html" title="interface in org.geotools.data">Transaction</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/data/DefaultFeatureResults.html#getTransaction()">getTransaction</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns transaction from featureSource (if it is a FeatureStore), or
 Transaction.AUTO_COMMIT if it is not.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../org/geotools/data/FeatureReader.html" title="interface in org.geotools.data">FeatureReader</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/data/DefaultFeatureResults.html#reader()">reader</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Retrieve a FeatureReader for this Query</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_DataFeatureCollection"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html" title="class in org.geotools.data.store">DataFeatureCollection</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#accepts(org.geotools.feature.visitor.FeatureVisitor, org.geotools.util.ProgressListener)">accepts</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#add(java.lang.Object)">add</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#addAll(java.util.Collection)">addAll</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#addListener(org.geotools.feature.CollectionListener)">addListener</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#clear()">clear</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#close(org.geotools.feature.FeatureIterator)">close</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#close(java.util.Iterator)">close</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#closeIterator(java.util.Iterator)">closeIterator</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#contains(java.lang.Object)">contains</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#containsAll(java.util.Collection)">containsAll</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#features()">features</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#fireChange(java.util.Collection, int)">fireChange</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#fireChange(org.geotools.feature.Feature[], int)">fireChange</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#fireChange(org.geotools.feature.Feature, int)">fireChange</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#getAttribute(int)">getAttribute</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#getAttribute(java.lang.String)">getAttribute</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#getAttributes(java.lang.Object[])">getAttributes</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#getDefaultGeometry()">getDefaultGeometry</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#getFeatureType()">getFeatureType</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#getID()">getID</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#getNumberOfAttributes()">getNumberOfAttributes</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#getParent()">getParent</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#isEmpty()">isEmpty</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#iterator()">iterator</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#openIterator()">openIterator</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#purge()">purge</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#remove(java.lang.Object)">remove</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#removeAll(java.util.Collection)">removeAll</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#removeListener(org.geotools.feature.CollectionListener)">removeListener</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#retainAll(java.util.Collection)">retainAll</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#setAttribute(int, java.lang.Object)">setAttribute</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#setAttribute(java.lang.String, java.lang.Object)">setAttribute</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#setDefaultGeometry(com.vividsolutions.jts.geom.Geometry)">setDefaultGeometry</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#setParent(org.geotools.feature.FeatureCollection)">setParent</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#size()">size</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#sort(org.geotools.filter.SortBy)">sort</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#sort(org.geotools.filter.SortBy2)">sort</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#subCollection(org.geotools.filter.Filter)">subCollection</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#toArray()">toArray</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#toArray(java.lang.Object[])">toArray</A>, <A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#writer()">writer</A></CODE></TD>
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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>
</TR>
<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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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from interface <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Collection.html" title="class or interface in java.util">Collection</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Collection.html#equals(java.lang.Object)" title="class or interface in java.util">equals</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Collection.html#hashCode()" title="class or interface in java.util">hashCode</A></CODE></TD>
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&nbsp;
<P>

<!-- ============ FIELD DETAIL =========== -->

<A NAME="field_detail"><!-- --></A>
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Field Detail</B></FONT></TD>
</TR>
</TABLE>

<A NAME="query"><!-- --></A><H3>
query</H3>
<PRE>
protected <A HREF="../../../org/geotools/data/Query.html" title="interface in org.geotools.data">Query</A> <B>query</B></PRE>
<DL>
<DD>Query used to define this subset of features from the feature source
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="featureSource"><!-- --></A><H3>
featureSource</H3>
<PRE>
protected <A HREF="../../../org/geotools/data/FeatureSource.html" title="interface in org.geotools.data">FeatureSource</A> <B>featureSource</B></PRE>
<DL>
<DD>Feature source used to aquire features, note we are only a
 "view" of this FeatureSource, its contents, transaction and events
 need to be forwarded through this collection api to simplier code
 such as renderers.
<P>
<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>
</TR>
</TABLE>

<A NAME="DefaultFeatureResults(org.geotools.data.FeatureSource, org.geotools.data.Query)"><!-- --></A><H3>
DefaultFeatureResults</H3>
<PRE>
public <B>DefaultFeatureResults</B>(<A HREF="../../../org/geotools/data/FeatureSource.html" title="interface in org.geotools.data">FeatureSource</A>&nbsp;source,
                             <A HREF="../../../org/geotools/data/Query.html" title="interface in org.geotools.data">Query</A>&nbsp;query)</PRE>
<DL>
<DD>FeatureResults query against featureSource.
 <p>
 Please note that is object will not be valid
 after the transaction has closed.
 </p>
 <p>
 Really? I think it would be, it would just reflect the
 same query against the featuresource using AUTO_COMMIT.
 </p>
<P>
<DT><B>Parameters:</B><DD><CODE>source</CODE> - <DD><CODE>query</CODE> - </DL>

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

<A NAME="method_detail"><!-- --></A>
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Method Detail</B></FONT></TD>
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</TABLE>

<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>FeatureSchema for provided query.

 <p>
 If query.retrieveAllProperties() is <code>true</code> the FeatureSource
 getSchema() will be returned.
 </p>

 <p>
 If query.getPropertyNames() is used to limit the result of the Query a
 sub type will be returned based on FeatureSource.getSchema().
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/feature/FeatureCollection.html#getSchema()">getSchema</A></CODE> in interface <CODE><A HREF="../../../org/geotools/feature/FeatureCollection.html" title="interface in org.geotools.feature">FeatureCollection</A></CODE><DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/data/store/DataFeatureCollection.html#getSchema()">getSchema</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>DOCUMENT ME!
<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> - DOCUMENT ME!
<DD><CODE><A HREF="../../../org/geotools/data/DataSourceException.html" title="class in org.geotools.data">DataSourceException</A></CODE> - DOCUMENT ME!</DL>