abstractdatastore.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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<!-- ========= CONSTRUCTOR DETAIL ======== -->

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<B>Constructor Detail</B></FONT></TD>
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<A NAME="AbstractDataStore()"><!-- --></A><H3>
AbstractDataStore</H3>
<PRE>
public <B>AbstractDataStore</B>()</PRE>
<DL>
<DD>Default (Writeable) DataStore
<P>
</DL>
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<A NAME="AbstractDataStore(boolean)"><!-- --></A><H3>
AbstractDataStore</H3>
<PRE>
public <B>AbstractDataStore</B>(boolean&nbsp;isWriteable)</PRE>
<DL>
<DD>AbstractDataStore creation.
<P>
<DT><B>Parameters:</B><DD><CODE>isWriteable</CODE> - true for writeable DataStore.</DL>

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

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<B>Method Detail</B></FONT></TD>
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<A NAME="createLockingManager()"><!-- --></A><H3>
createLockingManager</H3>
<PRE>
protected <A HREF="../../../org/geotools/data/InProcessLockingManager.html" title="class in org.geotools.data">InProcessLockingManager</A> <B>createLockingManager</B>()</PRE>
<DL>
<DD>Currently returns an InProcessLockingManager.

 <p>
 Subclasses that implement real locking may override this method to
 return <code>null</code>.
 </p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>InProcessLockingManager or null.</DL>
</DD>
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<A NAME="createMetadata(java.lang.String)"><!-- --></A><H3>
createMetadata</H3>
<PRE>
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>
<DL>
<DD>Subclass override to provide access to metadata.
 <p>
 CreateTypeEntry uses this method to aquire metadata information,
 if available.
 </p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
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<A NAME="getTypeNames()"><!-- --></A><H3>
getTypeNames</H3>
<PRE>
public abstract <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>()
                               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>Convience method for retriving all the names from the Catalog Entires
<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></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>typeNames for available FeatureTypes.
<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>
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<A NAME="getSchema(java.lang.String)"><!-- --></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>(<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>Retrive schema information for typeName
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/data/DataStore.html#getSchema(java.lang.String)">getSchema</A></CODE> in interface <CODE><A HREF="../../../org/geotools/data/DataStore.html" title="interface in org.geotools.data">DataStore</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>typeName</CODE> - typeName of requested FeatureType
<DT><B>Returns:</B><DD>FeatureType for the provided typeName
<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 typeName cannot be found</DL>
</DD>
</DL>
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<A NAME="getFeatureReader(java.lang.String)"><!-- --></A><H3>
getFeatureReader</H3>
<PRE>
protected abstract <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>
<DL>
<DD>Subclass must implement.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>typeName</CODE> - 
<DT><B>Returns:</B><DD>FeatureReader over contents of typeName
<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>
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<A NAME="getFeatureWriter(java.lang.String)"><!-- --></A><H3>
getFeatureWriter</H3>
<PRE>
protected <A HREF="../../../org/geotools/data/FeatureWriter.html" title="interface in org.geotools.data">FeatureWriter</A> <B>getFeatureWriter</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><B>Deprecated.</B>&nbsp;<I></I>&nbsp;
<P>
<DD>Subclass can implement this to provide writing support.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>typeName</CODE> - 
<DT><B>Returns:</B><DD>FeatureWriter over contents of typeName
<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>
<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> - Subclass may throw IOException
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/UnsupportedOperationException.html" title="class or interface in java.lang">UnsupportedOperationException</A></CODE> - Subclass may implement</DL>
</DD>
</DL>
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<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>Subclass should implement this to provide writing support.
 <p>A feature writer writes to the resource so it should considered to always be committing.
 The transaction is passed in so that it can be known what FeatureListeners should be notified of the
 changes.  If the Transaction is AUTOCOMMIT then all listeners should be notified.  If not
 all listeners that are NOT registered with that transaction should be notified.<p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>typeName</CODE> - <DD><CODE>transaction</CODE> - a feature writer
<DT><B>Returns:</B><DD>FeatureWriter over contents of typeName
<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>
<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> - Subclass may throw IOException
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/UnsupportedOperationException.html" title="class or interface in java.lang">UnsupportedOperationException</A></CODE> - Subclass may implement</DL>
</DD>
</DL>
<HR>

<A NAME="createSchema(org.geotools.feature.FeatureType)"><!-- --></A><H3>
createSchema</H3>
<PRE>
public void <B>createSchema</B>(<A HREF="../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A>&nbsp;featureType)
                  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>Subclass should implement to provide writing support.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/data/DataStore.html#createSchema(org.geotools.feature.FeatureType)">createSchema</A></CODE> in interface <CODE><A HREF="../../../org/geotools/data/DataStore.html" title="interface in org.geotools.data">DataStore</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>featureType</CODE> - Requested FeatureType
<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>
<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> - Subclass may throw IOException
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/UnsupportedOperationException.html" title="class or interface in java.lang">UnsupportedOperationException</A></CODE> - Subclass may implement</DL>
</DD>
</DL>
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<A NAME="updateSchema(java.lang.String, org.geotools.feature.FeatureType)"><!-- --></A><H3>
updateSchema</H3>
<PRE>
public void <B>updateSchema</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/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A>&nbsp;featureType)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../org/geotools/data/DataStore.html" title="interface in org.geotools.data">DataStore</A></CODE></B></DD>
<DD>Used to force namespace and CS info into a persistent change.
 <p>
 The provided featureType should completely cover the existing schema.
 All attributes should be accounted for and the typeName should match.
 </p>
 <p>
 Suggestions:
 </p>
 <ul>
 <li>Sean - don't do this</li>
 <li>Jody - Just allow changes to metadata: CS, namespace, and others</li>
 <li>James - Allow change/addition of attribtues</li>
 </ul>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/data/DataStore.html#updateSchema(java.lang.String, org.geotools.feature.FeatureType)">updateSchema</A></CODE> in interface <CODE><A HREF="../../../org/geotools/data/DataStore.html" title="interface in org.geotools.data">DataStore</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>typeName</CODE> - </DL>
</DD>
</DL>
<HR>

<A NAME="getView(org.geotools.data.Query)"><!-- --></A><H3>
getView</H3>
<PRE>
public <A HREF="../../../org/geotools/data/FeatureSource.html" title="interface in org.geotools.data">FeatureSource</A> <B>getView</B>(<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>,