shapefiledatastore.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

<A NAME="getFeatureReader(java.lang.String, org.geotools.data.Query)"><!-- --></A><H3>
getFeatureReader</H3>
<PRE>
protected <A HREF="../../../../org/geotools/data/FeatureReader.html" title="interface in org.geotools.data">FeatureReader</A> <B>getFeatureReader</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)
                                  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>Just like the basic version, but adds a small optimization: if no
 attributes are going to be read, don't uselessly open and read the dbf
 file. Makes sure to consider also attributes in the query.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/geotools/data/AbstractDataStore.html#getFeatureReader(java.lang.String, org.geotools.data.Query)">getFeatureReader</A></CODE> in class <CODE><A HREF="../../../../org/geotools/data/AbstractDataStore.html" title="class in org.geotools.data">AbstractDataStore</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><DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/data/AbstractDataStore.html#getFeatureReader(java.lang.String, org.geotools.data.Query)"><CODE>AbstractDataStore.getFeatureReader(java.lang.String,
      org.geotools.data.Query)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="createFeatureReader(java.lang.String, org.geotools.data.shapefile.ShapefileDataStore.Reader, org.geotools.feature.FeatureType)"><!-- --></A><H3>
createFeatureReader</H3>
<PRE>
protected <A HREF="../../../../org/geotools/data/FeatureReader.html" title="interface in org.geotools.data">FeatureReader</A> <B>createFeatureReader</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/shapefile/ShapefileDataStore.Reader.html" title="class in org.geotools.data.shapefile">ShapefileDataStore.Reader</A>&nbsp;r,
                                            <A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A>&nbsp;readerSchema)
                                     throws <A HREF="../../../../org/geotools/feature/SchemaException.html" title="class in org.geotools.feature">SchemaException</A></PRE>
<DL>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/geotools/feature/SchemaException.html" title="class in org.geotools.feature">SchemaException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getAttributesReader(boolean)"><!-- --></A><H3>
getAttributesReader</H3>
<PRE>
protected <A HREF="../../../../org/geotools/data/shapefile/ShapefileDataStore.Reader.html" title="class in org.geotools.data.shapefile">ShapefileDataStore.Reader</A> <B>getAttributesReader</B>(boolean&nbsp;readDbf)
                                                 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>Returns the attribute reader, allowing for a pure shapefile reader, or a
 combined dbf/shp reader.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>readDbf</CODE> - - if true, the dbf fill will be opened and read
<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="openShapeReader()"><!-- --></A><H3>
openShapeReader</H3>
<PRE>
protected <A HREF="../../../../org/geotools/data/shapefile/shp/ShapefileReader.html" title="class in org.geotools.data.shapefile.shp">ShapefileReader</A> <B>openShapeReader</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>Convenience method for opening a ShapefileReader.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>A new ShapefileReader.
<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 an error occurs during creation.
<DD><CODE><A HREF="../../../../org/geotools/data/DataSourceException.html" title="class in org.geotools.data">DataSourceException</A></CODE> - DOCUMENT ME!</DL>
</DD>
</DL>
<HR>

<A NAME="openDbfReader()"><!-- --></A><H3>
openDbfReader</H3>
<PRE>
protected <A HREF="../../../../org/geotools/data/shapefile/dbf/DbaseFileReader.html" title="class in org.geotools.data.shapefile.dbf">DbaseFileReader</A> <B>openDbfReader</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>Convenience method for opening a DbaseFileReader.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>A new DbaseFileReader
<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 an error occurs during creation.</DL>
</DD>
</DL>
<HR>

<A NAME="openIndexFile(java.net.URL)"><!-- --></A><H3>
openIndexFile</H3>
<PRE>
protected <A HREF="../../../../org/geotools/data/shapefile/shp/IndexFile.html" title="class in org.geotools.data.shapefile.shp">IndexFile</A> <B>openIndexFile</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/net/URL.html" title="class or interface in java.net">URL</A>&nbsp;shxURL)
                           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>Convenience method for opening an index file.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>shxURL</CODE> - TODO
<DT><B>Returns:</B><DD>An IndexFile
<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="openPrjReader()"><!-- --></A><H3>
openPrjReader</H3>
<PRE>
protected <A HREF="../../../../org/geotools/data/shapefile/prj/PrjFileReader.html" title="class in org.geotools.data.shapefile.prj">PrjFileReader</A> <B>openPrjReader</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>,
                                      FactoryException</PRE>
<DL>
<DD>Convenience method for opening a DbaseFileReader.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>A new DbaseFileReader
<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 an error occurs during creation.
<DD><CODE>FactoryException</CODE> - DOCUMENT ME!</DL>
</DD>
</DL>
<HR>

<A NAME="getTypeNames()"><!-- --></A><H3>
getTypeNames</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>[] <B>getTypeNames</B>()</PRE>
<DL>
<DD>Get an array of type names this DataStore holds.<BR/>ShapefileDataStore
 will always return a single name.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/DataStore.html#getTypeNames()">getTypeNames</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/data/DataStore.html" title="interface in org.geotools.data">DataStore</A></CODE><DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/AbstractDataStore.html#getTypeNames()">getTypeNames</A></CODE> in class <CODE><A HREF="../../../../org/geotools/data/AbstractDataStore.html" title="class in org.geotools.data">AbstractDataStore</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>An array of length one containing the single type held.</DL>
</DD>
</DL>
<HR>

<A NAME="createFeatureTypeName()"><!-- --></A><H3>
createFeatureTypeName</H3>
<PRE>
protected <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>createFeatureTypeName</B>()</PRE>
<DL>
<DD>Create the type name of the single FeatureType this DataStore
 represents.<BR/> For example, if the urls path is
 file:///home/billy/mytheme.shp, the type name will be mytheme.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>A name based upon the last path component of the url minus the
         extension.</DL>
</DD>
</DL>
<HR>

<A NAME="getCurrentTypeName()"><!-- --></A><H3>
getCurrentTypeName</H3>
<PRE>
protected <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>getCurrentTypeName</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="typeCheck(java.lang.String)"><!-- --></A><H3>
typeCheck</H3>
<PRE>
protected void <B>typeCheck</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;requested)
                  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>A convenience method to check if a type name is correct.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>requested</CODE> - The type name requested.
<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 the type name is not available</DL>
</DD>
</DL>
<HR>

<A NAME="createFeatureWriter(java.lang.String, org.geotools.data.Transaction)"><!-- --></A><H3>
createFeatureWriter</H3>
<PRE>
protected <A HREF="../../../../org/geotools/data/FeatureWriter.html" title="interface in org.geotools.data">FeatureWriter</A> <B>createFeatureWriter</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/Transaction.html" title="interface in org.geotools.data">Transaction</A>&nbsp;transaction)
                                     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>Create a FeatureWriter for the given type name.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/geotools/data/AbstractDataStore.html#createFeatureWriter(java.lang.String, org.geotools.data.Transaction)">createFeatureWriter</A></CODE> in class <CODE><A HREF="../../../../org/geotools/data/AbstractDataStore.html" title="class in org.geotools.data">AbstractDataStore</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>typeName</CODE> - The typeName of the FeatureType to write<DD><CODE>transaction</CODE> - DOCUMENT ME!
<DT><B>Returns:</B><DD>A new FeatureWriter.
<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 the typeName is not available or some other error
         occurs.</DL>
</DD>
</DL>
<HR>

<A NAME="getSchema(java.lang.String)"><!-- --></A><H3>
getSchema</H3>
<PRE>
public <A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A> <B>getSchema</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)
                      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>Obtain the FeatureType of the given name. ShapefileDataStore contains
 only one FeatureType.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/DataStore.html#getSchema(java.lang.S