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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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<B>Method Detail</B></FONT></TD>
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<A NAME="getFeatureSources()"><!-- --></A><H3>
getFeatureSources</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/SortedMap.html" title="class or interface in java.util">SortedMap</A> <B>getFeatureSources</B>()</PRE>
<DL>
<DD>All FeatureSources by typeRef ( aka dataStoreId:typeName)
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getPrefixes()"><!-- --></A><H3>
getPrefixes</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Set.html" title="class or interface in java.util">Set</A> <B>getPrefixes</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>Retrieve Set of Namespaces prefixes registered by DataStores in this
 Catalog.

 <p>
 Namespace seems to be the gml prefix used when writing out GML. We may
 need to promote this to a "first class" object.
 </p>

 <p>
 GeoServer maintains the following information in a  NamespaceInfo
 object:
 </p>

 <ul>
 <li>
 prefix: uml prefix representing the namespace
 </li>
 <li>
 uri: uri used to reference namespace
 </li>
 <li>
 default: true if this is the "Default" namespace for the Catalog
 </li>
 </ul>

 <p>
 GeoServer global.Data implements this interface. You may use the
 namespace strings returned by this method to look up NamespaceInfo
 objets by prefix.
 </p>
<P>
<DD><DL>

<DT><B>Returns:</B><DD>Set of available Namespace prefixes.
<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="source(java.lang.String, java.lang.String)"><!-- --></A><H3>
source</H3>
<PRE>
public <A HREF="../../../org/geotools/data/FeatureSource.html" title="interface in org.geotools.data">FeatureSource</A> <B>source</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;dataStoreId,
                            <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>FeatureSoruce access.
 </p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>dataStoreId</CODE> - <DD><CODE>typeName</CODE> - 
<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="getDataStores()"><!-- --></A><H3>
getDataStores</H3>
<PRE>
public <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>getDataStores</B>()</PRE>
<DL>
<DD>Access to the DataStores registed to this Catalog.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>Map of registered dataStoreId:DataStore</DL>
</DD>
</DL>
<HR>

<A NAME="lockRefresh(java.lang.String, org.geotools.data.Transaction)"><!-- --></A><H3>
lockRefresh</H3>
<PRE>
public boolean <B>lockRefresh</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;lockID,
                           <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>Refresh feature lock as indicated by the WFS locking specification.

 <p>
 Refresh the indicated locks for each each DataStore managed by this
 Catalog.
 </p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>lockID</CODE> - Authorization identifing lock<DD><CODE>transaction</CODE> - Transaction with authorization for lock
<DT><B>Returns:</B><DD>true if lock was found and refreshed
<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 a problem occurs</DL>
</DD>
</DL>
<HR>

<A NAME="lockRelease(java.lang.String, org.geotools.data.Transaction)"><!-- --></A><H3>
lockRelease</H3>
<PRE>
public boolean <B>lockRelease</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;lockID,
                           <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>Release feature lock by lockID.
 <p>
 Release the indicated locks for each each DataStore managed by this
 Catalog.
 </p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>lockID</CODE> - Authorization identifing lock<DD><CODE>transaction</CODE> - Transaction with authorization for lock
<DT><B>Returns:</B><DD>true if lock was found and released
<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 a problem occurs</DL>
</DD>
</DL>
<HR>

<A NAME="lockExists(java.lang.String)"><!-- --></A><H3>
lockExists</H3>
<PRE>
public boolean <B>lockExists</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;lockID)</PRE>
<DL>
<DD>Tests if a lock exists in this Catalog.

 <p>
 This method will search all the DataStores to see if the indicated lock
 exists.
 </p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>lockID</CODE> - Authorization identifing lock
<DT><B>Returns:</B><DD>true if lock was found</DL>
</DD>
</DL>
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