filteringfeaturewriter.html

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<B>Method Detail</B></FONT></TD>
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<A NAME="getFeatureType()"><!-- --></A><H3>
getFeatureType</H3>
<PRE>
public <A HREF="../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A> <B>getFeatureType</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../org/geotools/data/FeatureWriter.html" title="interface in org.geotools.data">FeatureWriter</A></CODE></B></DD>
<DD>FeatureType this reader has been configured to create.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/data/FeatureWriter.html#getFeatureType()">getFeatureType</A></CODE> in interface <CODE><A HREF="../../../org/geotools/data/FeatureWriter.html" title="interface in org.geotools.data">FeatureWriter</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>FeatureType this writer has been configured to create.</DL>
</DD>
</DL>
<HR>

<A NAME="next()"><!-- --></A><H3>
next</H3>
<PRE>
public <A HREF="../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A> <B>next</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/FeatureWriter.html" title="interface in org.geotools.data">FeatureWriter</A></CODE></B></DD>
<DD>Reads a Feature from the underlying AttributeReader.

 <p>
 This method may return a Feature even though hasNext() returns
 <code>false</code>, this allows FeatureWriters to provide an ability to
 append content.
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/data/FeatureWriter.html#next()">next</A></CODE> in interface <CODE><A HREF="../../../org/geotools/data/FeatureWriter.html" title="interface in org.geotools.data">FeatureWriter</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>Feature from Query, or newly appended Feature
<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!</DL>
</DD>
</DL>
<HR>

<A NAME="remove()"><!-- --></A><H3>
remove</H3>
<PRE>
public void <B>remove</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/FeatureWriter.html" title="interface in org.geotools.data">FeatureWriter</A></CODE></B></DD>
<DD>Removes current Feature, must be called before hasNext.

 <p>
 FeatureWriters will need to allow all FeatureSources of the same
 typeName to issue a FeatureEvent event of type
 <code>FeatureEvent.FEATURES_REMOVED</code> when this method is called.
 </p>

 <p>
 If this FeatureWriter is opperating against a Transaction
 FEATURES_REMOVED events should only be sent to FeatureSources operating
 on the same Transaction. When Transaction commit() is called other
 FeatureSources will be informed of the modifications.
 </p>

 <p>
 When the current Feature has been provided as new content, this method
 "cancels" the add opperation (and notification needed).
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/data/FeatureWriter.html#remove()">remove</A></CODE> in interface <CODE><A HREF="../../../org/geotools/data/FeatureWriter.html" title="interface in org.geotools.data">FeatureWriter</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> - DOCUMENT ME!</DL>
</DD>
</DL>
<HR>

<A NAME="write()"><!-- --></A><H3>
write</H3>
<PRE>
public void <B>write</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/FeatureWriter.html" title="interface in org.geotools.data">FeatureWriter</A></CODE></B></DD>
<DD>Wrties the current Feature, must be called before hasNext.

 <p>
 FeautreWriters will need to allow FeatureSources of the same typeName to
 issue a FeatureEvent:
 </p>

 <ul>
 <li>
 FeatureEvent.FEATURES_ADDED: when next() has been called with hasNext()
 equal to <code>false</code>.
 </li>
 <li>
 FeatureEvent.FEATURES_MODIFIED: when next has been called with hasNext()
 equal to <code>true</code> and the resulting Feature has indeed been
 modified.
 </li>
 </ul>

 <p>
 If this FeatureWriter is opperating against a Transaction the
 FEATURES_MODIFIED or FEATURES_ADDED events should only be sent to
 FeatureSources opperating on the same Transaction. When Transaction
 commit() is called other FeatureSources will be informed of the
 modifications.
 </p>

 <p>
 If you have not called write() when you call hasNext() or next(), no
 modification will occur().
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/data/FeatureWriter.html#write()">write</A></CODE> in interface <CODE><A HREF="../../../org/geotools/data/FeatureWriter.html" title="interface in org.geotools.data">FeatureWriter</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>
<HR>

<A NAME="hasNext()"><!-- --></A><H3>
hasNext</H3>
<PRE>
public boolean <B>hasNext</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>Query if we have more content.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/data/FeatureWriter.html#hasNext()">hasNext</A></CODE> in interface <CODE><A HREF="../../../org/geotools/data/FeatureWriter.html" title="interface in org.geotools.data">FeatureWriter</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>true if writer has additional content
<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 writer we are filtering encounters a problem</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><B>Description copied from interface: <CODE><A HREF="../../../org/geotools/data/FeatureWriter.html" title="interface in org.geotools.data">FeatureWriter</A></CODE></B></DD>
<DD>Release the underlying resources.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/data/FeatureWriter.html#close()">close</A></CODE> in interface <CODE><A HREF="../../../org/geotools/data/FeatureWriter.html" title="interface in org.geotools.data">FeatureWriter</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 there there are problems releasing underlying resources, or
 possibly if close has been called (up to the implementation).</DL>
</DD>
</DL>
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