datafeaturecollection.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

<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/data/store/DataFeatureCollection.html#removeAll(java.util.Collection)">removeAll</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Collection.html" title="class or interface in java.util">Collection</A>&nbsp;arg0)</CODE>

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<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/data/store/DataFeatureCollection.html#removeListener(org.geotools.feature.CollectionListener)">removeListener</A></B>(<A HREF="../../../../org/geotools/feature/CollectionListener.html" title="interface in org.geotools.feature">CollectionListener</A>&nbsp;listener)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Removes a listener for collection events.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/data/store/DataFeatureCollection.html#retainAll(java.util.Collection)">retainAll</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Collection.html" title="class or interface in java.util">Collection</A>&nbsp;arg0)</CODE>

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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/data/store/DataFeatureCollection.html#setAttribute(int, java.lang.Object)">setAttribute</A></B>(int&nbsp;position,
             <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;val)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets an attribute by the given zero-based index. </TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/data/store/DataFeatureCollection.html#setAttribute(java.lang.String, java.lang.Object)">setAttribute</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;xPath,
             <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;attribute)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets a single attribute for this feature, passed as a complex object. </TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/data/store/DataFeatureCollection.html#setDefaultGeometry(com.vividsolutions.jts.geom.Geometry)">setDefaultGeometry</A></B>(<A HREF="http://www.jump-project.org/docs/jts/1.7/api/com/vividsolutions/jts/geom/Geometry.html" title="class or interface in com.vividsolutions.jts.geom">Geometry</A>&nbsp;geometry)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the default geometry for this feature.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/data/store/DataFeatureCollection.html#setParent(org.geotools.feature.FeatureCollection)">setParent</A></B>(<A HREF="../../../../org/geotools/feature/FeatureCollection.html" title="interface in org.geotools.feature">FeatureCollection</A>&nbsp;collection)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the parent collection this feature is stored in, if it is not
 already set.  </TD>
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<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/store/DataFeatureCollection.html#size()">size</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Default implementation based on getCount() - this may be expensive</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/geotools/feature/FeatureList.html" title="interface in org.geotools.feature">FeatureList</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/data/store/DataFeatureCollection.html#sort(org.geotools.filter.SortBy)">sort</A></B>(<A HREF="../../../../org/geotools/filter/SortBy.html" title="interface in org.geotools.filter">SortBy</A>&nbsp;order)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Construct a sorted view of this content.
 </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/geotools/feature/FeatureList.html" title="interface in org.geotools.feature">FeatureList</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/data/store/DataFeatureCollection.html#sort(org.geotools.filter.SortBy2)">sort</A></B>(<A HREF="../../../../org/geotools/filter/SortBy2.html" title="interface in org.geotools.filter">SortBy2</A>&nbsp;order)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Allows for "Advanced" sort capabilities specific to the
 GeoTools platform!
 </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/store/DataFeatureCollection.html#subCollection(org.geotools.filter.Filter)">subCollection</A></B>(<A HREF="../../../../org/geotools/filter/Filter.html" title="interface in org.geotools.filter">Filter</A>&nbsp;filter)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Will return an optimized subCollection based on access
 to the origional FeatureSource.
 </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/data/store/DataFeatureCollection.html#toArray()">toArray</A></B>()</CODE>

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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/data/store/DataFeatureCollection.html#toArray(java.lang.Object[])">toArray</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>[]&nbsp;arg0)</CODE>

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

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Subclass may provide an implementation of this method to indicate
 that read/write support is provided.
 </TD>
</TR>
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&nbsp;<A NAME="methods_inherited_from_class_Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<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>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_Collection"><!-- --></A>
<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>
</TR>
</TABLE>
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<!-- ========= CONSTRUCTOR DETAIL ======== -->

<A NAME="constructor_detail"><!-- --></A>
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<TD COLSPAN=1><FONT SIZE="+2">
<B>Constructor Detail</B></FONT></TD>
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</TABLE>

<A NAME="DataFeatureCollection()"><!-- --></A><H3>
DataFeatureCollection</H3>
<PRE>
protected <B>DataFeatureCollection</B>()</PRE>
<DL>
<DD>Collection based on a generic collection
<P>
</DL>
<HR>

<A NAME="DataFeatureCollection(java.lang.String)"><!-- --></A><H3>
DataFeatureCollection</H3>
<PRE>
protected <B>DataFeatureCollection</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;id)</PRE>
<DL>
<DD>Collection based on a generic collection
<P>
</DL>
<HR>

<A NAME="DataFeatureCollection(java.lang.String, org.geotools.feature.FeatureType)"><!-- --></A><H3>
DataFeatureCollection</H3>
<PRE>
protected <B>DataFeatureCollection</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;id,
                                <A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A>&nbsp;featureType)</PRE>
<DL>
<DD>Subclass must think about what consitructors it needs.
<P>
</DL>

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

<A NAME="method_detail"><!-- --></A>
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<TD COLSPAN=1><FONT SIZE="+2">
<B>Method Detail</B></FONT></TD>
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</TABLE>

<A NAME="fireChange(org.geotools.feature.Feature[], int)"><!-- --></A><H3>
fireChange</H3>
<PRE>
protected void <B>fireChange</B>(<A HREF="../../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A>[]&nbsp;features,
                          int&nbsp;type)</PRE>
<DL>
<DD>To let listeners know that something has changed.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="fireChange(org.geotools.feature.Feature, int)"><!-- --></A><H3>
fireChange</H3>
<PRE>
protected void <B>fireChange</B>(<A HREF="../../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A>&nbsp;feature,
                          int&nbsp;type)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="fireChange(java.util.Collection, int)"><!-- --></A><H3>
fireChange</H3>
<PRE>
protected void <B>fireChange</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Collection.html" title="class or interface in java.util">Collection</A>&nbsp;coll,
                          int&nbsp;type)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getSchema()"><!-- --></A><H3>
getSchema</H3>
<PRE>
public abstract <A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A> <B>getSchema</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/geotools/feature/FeatureCollection.html" title="interface in org.geotools.feature">FeatureCollection</A></CODE></B></DD>
<DD>The schema for the child features of this collection.
 <p>
 There is a difference between getFeatureType() and getSchema()represents the LCD
 FeatureType that best represents the contents of this collection.
 <ul>
 <li>The degenerate case returns the "_Feature" FeatureType, where the
 onlything known is that the contents are Features.
 <li>For a collection backed by a shapefiles (or database tables) the FeatureType returned by getSchema() will
 complete describe each and every child in the collection.
 <li>For mixed content FeatureCollections you will need to check the FeatureType of each Feature as it
 is retrived from the collection
 </ul>
 </p>