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

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<A NAME="readWriteLock"><!-- --></A><H3>
readWriteLock</H3>
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protected <A HREF="../../../../org/geotools/data/shapefile/Lock.html" title="class in org.geotools.data.shapefile">Lock</A> <B>readWriteLock</B></PRE>
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<A NAME="namespace"><!-- --></A><H3>
namespace</H3>
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protected <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/net/URI.html" title="class or interface in java.net">URI</A> <B>namespace</B></PRE>
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<A NAME="schema"><!-- --></A><H3>
schema</H3>
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protected <A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A> <B>schema</B></PRE>
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<A NAME="useMemoryMappedBuffer"><!-- --></A><H3>
useMemoryMappedBuffer</H3>
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protected boolean <B>useMemoryMappedBuffer</B></PRE>
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<!-- ========= CONSTRUCTOR DETAIL ======== -->

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<B>Constructor Detail</B></FONT></TD>
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<A NAME="ShapefileDataStore(java.net.URL)"><!-- --></A><H3>
ShapefileDataStore</H3>
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public <B>ShapefileDataStore</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;url)
                   throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/net/MalformedURLException.html" title="class or interface in java.net">MalformedURLException</A></PRE>
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<DD>Creates a new instance of ShapefileDataStore.
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<DT><B>Parameters:</B><DD><CODE>url</CODE> - The URL of the shp file to use for this DataSource.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/NullPointerException.html" title="class or interface in java.lang">NullPointerException</A></CODE> - DOCUMENT ME!
<DD><CODE>.</CODE> - If computation of related URLs (dbf,shx) fails.
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/net/MalformedURLException.html" title="class or interface in java.net">MalformedURLException</A></CODE></DL>
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<A NAME="ShapefileDataStore(java.net.URL, java.net.URI)"><!-- --></A><H3>
ShapefileDataStore</H3>
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public <B>ShapefileDataStore</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;url,
                          <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/net/URI.html" title="class or interface in java.net">URI</A>&nbsp;namespace)
                   throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/net/MalformedURLException.html" title="class or interface in java.net">MalformedURLException</A></PRE>
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<DD>this sets the datastore's namespace during construction (so the schema -
 FeatureType - will have the correct value) You can call this with
 namespace = null, but I suggest you give it an actual namespace.
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<DT><B>Parameters:</B><DD><CODE>url</CODE> - <DD><CODE>namespace</CODE> - </DL>
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<A NAME="ShapefileDataStore(java.net.URL, java.net.URI, boolean)"><!-- --></A><H3>
ShapefileDataStore</H3>
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public <B>ShapefileDataStore</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;url,
                          <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/net/URI.html" title="class or interface in java.net">URI</A>&nbsp;namespace,
                          boolean&nbsp;useMemoryMapped)
                   throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/net/MalformedURLException.html" title="class or interface in java.net">MalformedURLException</A></PRE>
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<DD>this sets the datastore's namespace during construction (so the schema -
 FeatureType - will have the correct value) You can call this with
 namespace = null, but I suggest you give it an actual namespace.
<P>
<DT><B>Parameters:</B><DD><CODE>url</CODE> - <DD><CODE>namespace</CODE> - <DD><CODE>useMemoryMapped</CODE> - </DL>

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<A NAME="createMetadata(java.lang.String)"><!-- --></A><H3>
createMetadata</H3>
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protected <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Map.html" title="class or interface in java.util">Map</A> <B>createMetadata</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)</PRE>
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<DD>Latch onto xmlURL if it is there, we may be able to get out of
 calculating the bounding box!
 
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 This method is called by the createTypeEntry anonymous inner class
 DefaultTypeEntry.
 </p>
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<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/geotools/data/AbstractDataStore.html#createMetadata(java.lang.String)">createMetadata</A></CODE> in class <CODE><A HREF="../../../../org/geotools/data/AbstractDataStore.html" title="class in org.geotools.data">AbstractDataStore</A></CODE></DL>
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<DT><B>Parameters:</B><DD><CODE>typeName</CODE> - DOCUMENT ME!
<DT><B>Returns:</B><DD>Map with xmlURL parsed, or an EMPTY_MAP.</DL>
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<A NAME="isLocal()"><!-- --></A><H3>
isLocal</H3>
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public boolean <B>isLocal</B>()</PRE>
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<DD>Determine if the location of this shapefile is local or remote.
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<DT><B>Returns:</B><DD>true if local, false if remote</DL>
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<A NAME="getReadChannel(java.net.URL)"><!-- --></A><H3>
getReadChannel</H3>
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protected <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/nio/channels/ReadableByteChannel.html" title="class or interface in java.nio.channels">ReadableByteChannel</A> <B>getReadChannel</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;url)
                                      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>
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<DD>Obtain a ReadableByteChannel from the given URL. If the url protocol is
 file, a FileChannel will be returned. Otherwise a generic channel will
 be obtained from the urls input stream.
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<DT><B>Parameters:</B><DD><CODE>url</CODE> - DOCUMENT ME!
<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!</DL>
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<A NAME="getWriteChannel(java.net.URL)"><!-- --></A><H3>
getWriteChannel</H3>
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protected <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/nio/channels/WritableByteChannel.html" title="class or interface in java.nio.channels">WritableByteChannel</A> <B>getWriteChannel</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;url)
                                       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>
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<DD>Obtain a WritableByteChannel from the given URL. If the url protocol is
 file, a FileChannel will be returned. Currently, this method will
 return a generic channel for remote urls, however both shape and dbf
 writing can only occur with a local FileChannel channel.
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<DT><B>Parameters:</B><DD><CODE>url</CODE> - DOCUMENT ME!
<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!</DL>
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<A NAME="getFeatureReader(java.lang.String)"><!-- --></A><H3>
getFeatureReader</H3>
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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)
                                  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>
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<DD>Create a FeatureReader for the provided type name.
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<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/AbstractDataStore.html#getFeatureReader(java.lang.String)">getFeatureReader</A></CODE> in class <CODE><A HREF="../../../../org/geotools/data/AbstractDataStore.html" title="class in org.geotools.data">AbstractDataStore</A></CODE></DL>
</DD>
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<DT><B>Parameters:</B><DD><CODE>typeName</CODE> - The name of the FeatureType to create a reader for.
<DT><B>Returns:</B><DD>A new FeatureReader.
<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>
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<A NAME="getFeatureReader()"><!-- --></A><H3>
getFeatureReader</H3>
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protected <A HREF="../../../../org/geotools/data/FeatureReader.html" title="interface in org.geotools.data">FeatureReader</A> <B>getFeatureReader</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>
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<DD><B>Description copied from class: <CODE><A HREF="../../../../org/geotools/data/AbstractFileDataStore.html" title="class in org.geotools.data">AbstractFileDataStore</A></CODE></B></DD>
<DD>Singular version, which must be implemented to represent a Reader  for
 the url being read.
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<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/AbstractFileDataStore.html#getFeatureReader()">getFeatureReader</A></CODE> in class <CODE><A HREF="../../../../org/geotools/data/AbstractFileDataStore.html" title="class in org.geotools.data">AbstractFileDataStore</A></CODE></DL>
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<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><CODE>org.geotools.data.DataStore#getFeatureReader(java.lang.String)</CODE></DL>
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