featurereader.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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<TD COLSPAN=2>Methods in <A HREF="../../../../org/geotools/arcsde/data/package-summary.html">org.geotools.arcsde.data</A> that return <A HREF="../../../../org/geotools/data/FeatureReader.html" title="interface in org.geotools.data">FeatureReader</A></FONT></TD>
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<CODE>protected &nbsp;<A HREF="../../../../org/geotools/data/FeatureReader.html" title="interface in org.geotools.data">FeatureReader</A></CODE></FONT></TD>
<TD><CODE><B>ArcSDEDataStore.</B><B><A HREF="../../../../org/geotools/arcsde/data/ArcSDEDataStore.html#getFeatureReader(java.lang.String)">getFeatureReader</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;typeName)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;DOCUMENT ME!</TD>
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<CODE>protected &nbsp;<A HREF="../../../../org/geotools/data/FeatureReader.html" title="interface in org.geotools.data">FeatureReader</A></CODE></FONT></TD>
<TD><CODE><B>ArcSDEDataStore.</B><B><A HREF="../../../../org/geotools/arcsde/data/ArcSDEDataStore.html#getFeatureReader(java.lang.String, org.geotools.data.Query)">getFeatureReader</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;typeName,
                 <A HREF="../../../../org/geotools/data/Query.html" title="interface in org.geotools.data">Query</A>&nbsp;query)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;GR: this method is called from inside getFeatureReader(Query
 ,Transaction ) to allow subclasses return an optimized FeatureReader
 wich supports the filter and attributes truncation specified in
 <code>query</code>
 
 
 A subclass that supports the creation of such an optimized FeatureReader
 shold override this method. </TD>
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<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>ArcSDEDataStore.</B><B><A HREF="../../../../org/geotools/arcsde/data/ArcSDEDataStore.html#getFeatureReader(org.geotools.data.Query, org.geotools.data.Transaction)">getFeatureReader</A></B>(<A HREF="../../../../org/geotools/data/Query.html" title="interface in org.geotools.data">Query</A>&nbsp;query,
                 <A HREF="../../../../org/geotools/data/Transaction.html" title="interface in org.geotools.data">Transaction</A>&nbsp;transaction)</CODE>

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<A NAME="org.geotools.data"><!-- --></A>
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Uses of <A HREF="../../../../org/geotools/data/FeatureReader.html" title="interface in org.geotools.data">FeatureReader</A> in <A HREF="../../../../org/geotools/data/package-summary.html">org.geotools.data</A></FONT></TD>
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<TD COLSPAN=2>Classes in <A HREF="../../../../org/geotools/data/package-summary.html">org.geotools.data</A> that implement <A HREF="../../../../org/geotools/data/FeatureReader.html" title="interface in org.geotools.data">FeatureReader</A></FONT></TD>
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<CODE>&nbsp;class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/data/CollectionFeatureReader.html" title="class in org.geotools.data">CollectionFeatureReader</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;FeatureReader that reads features from a java.util.collection of features,
 an array of features or a FeatureCollection.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/data/DefaultFeatureReader.html" title="class in org.geotools.data">DefaultFeatureReader</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Basic support for reading Features from an AttributeReader.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/data/DiffFeatureReader.html" title="class in org.geotools.data">DiffFeatureReader</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A FeatureReader that considers differences.
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/data/EmptyFeatureReader.html" title="class in org.geotools.data">EmptyFeatureReader</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Represents an Empty, Typed, FeatureReader.</TD>
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<CODE>&nbsp;class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/data/FIDFeatureReader.html" title="class in org.geotools.data">FIDFeatureReader</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Experimental FeatureReader that always takes the first column of the
 attributeReader as the FeatureID.  </TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/data/FilteringFeatureReader.html" title="class in org.geotools.data">FilteringFeatureReader</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Basic support for a FeatureReader that does filtering.  </TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/data/MaxFeatureReader.html" title="class in org.geotools.data">MaxFeatureReader</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Basic support for a FeatureReader that limits itself to the number of
 features passed in.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/data/ReTypeFeatureReader.html" title="class in org.geotools.data">ReTypeFeatureReader</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Supports on the fly retyping of FeatureReader contents.
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<TD COLSPAN=2>Fields in <A HREF="../../../../org/geotools/data/package-summary.html">org.geotools.data</A> declared as <A HREF="../../../../org/geotools/data/FeatureReader.html" title="interface in org.geotools.data">FeatureReader</A></FONT></TD>
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<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>FilteringFeatureReader.</B><B><A HREF="../../../../org/geotools/data/FilteringFeatureReader.html#featureReader">featureReader</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<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>DiffFeatureWriter.</B><B><A HREF="../../../../org/geotools/data/DiffFeatureWriter.html#reader">reader</A></B></CODE>

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<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>MaxFeatureReader.</B><B><A HREF="../../../../org/geotools/data/MaxFeatureReader.html#featureReader">featureReader</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<TR BGCOLOR="#CCCCFF" CLASS="TableSubHeadingColor">
<TD COLSPAN=2>Methods in <A HREF="../../../../org/geotools/data/package-summary.html">org.geotools.data</A> that return <A HREF="../../../../org/geotools/data/FeatureReader.html" title="interface in org.geotools.data">FeatureReader</A></FONT></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected abstract &nbsp;<A HREF="../../../../org/geotools/data/FeatureReader.html" title="interface in org.geotools.data">FeatureReader</A></CODE></FONT></TD>
<TD><CODE><B>AbstractFileDataStore.</B><B><A HREF="../../../../org/geotools/data/AbstractFileDataStore.html#getFeatureReader()">getFeatureReader</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Singular version, which must be implemented to represent a Reader  for
 the url being read.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected abstract &nbsp;<A HREF="../../../../org/geotools/data/FeatureReader.html" title="interface in org.geotools.data">FeatureReader</A></CODE></FONT></TD>
<TD><CODE><B>AbstractDataStore.</B><B><A HREF="../../../../org/geotools/data/AbstractDataStore.html#getFeatureReader(java.lang.String)">getFeatureReader</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;typeName)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Subclass must implement.</TD>
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<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>AbstractDataStore.</B><B><A HREF="../../../../org/geotools/data/AbstractDataStore.html#getFeatureReader(org.geotools.data.Query, org.geotools.data.Transaction)">getFeatureReader</A></B>(<A HREF="../../../../org/geotools/data/Query.html" title="interface in org.geotools.data">Query</A>&nbsp;query,
                 <A HREF="../../../../org/geotools/data/Transaction.html" title="interface in org.geotools.data">Transaction</A>&nbsp;transaction)</CODE>

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<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>AbstractDataStore.</B><B><A HREF="../../../../org/geotools/data/AbstractDataStore.html#getFeatureReader(java.lang.String, org.geotools.data.Query)">getFeatureReader</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;typeName,
                 <A HREF="../../../../org/geotools/data/Query.html" title="interface in org.geotools.data">Query</A>&nbsp;query)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;GR: this method is called from inside getFeatureReader(Query ,Transaction )
 to allow subclasses return an optimized FeatureReader wich supports the
 filter and attributes truncation specified in <code>query</code>
 
 A subclass that supports the creation of such an optimized FeatureReader
 shold override this method. </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>DefaultFeatureResults.</B><B><A HREF="../../../../org/geotools/data/DefaultFeatureResults.html#reader()">reader</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Retrieve a FeatureReader for this Query</TD>
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