wmsutils.html

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          Given a CRS and a Set of type String consisting of EPSG CRS codes
 (such as "EPSG:4326"), it will check the transform that exists between
 each EPSG code's CRS and the given CRS. </TD>
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<A NAME="WMSUtils()"><!-- --></A><H3>
WMSUtils</H3>
<PRE>
public <B>WMSUtils</B>()</PRE>
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<A NAME="getNamedLayers(org.geotools.data.ows.WMSCapabilities)"><!-- --></A><H3>
getNamedLayers</H3>
<PRE>
public static <A HREF="../../../../org/geotools/data/ows/Layer.html" title="class in org.geotools.data.ows">Layer</A>[] <B>getNamedLayers</B>(<A HREF="../../../../org/geotools/data/ows/WMSCapabilities.html" title="class in org.geotools.data.ows">WMSCapabilities</A>&nbsp;capabilities)</PRE>
<DL>
<DD>Utility method to return each layer that has a name. This method maintains no hierarchy at all.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>An array of Layers, each value has a it's name property set or an empty array if there are none. It will return null if there is no capabilities document</DL>
</DD>
</DL>
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<A NAME="getQueryableLayers(org.geotools.data.ows.WMSCapabilities)"><!-- --></A><H3>
getQueryableLayers</H3>
<PRE>
public static <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>getQueryableLayers</B>(<A HREF="../../../../org/geotools/data/ows/WMSCapabilities.html" title="class in org.geotools.data.ows">WMSCapabilities</A>&nbsp;capabilities)</PRE>
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<DD><DL>
</DL>
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<A NAME="getSRSs(org.geotools.data.ows.WMSCapabilities)"><!-- --></A><H3>
getSRSs</H3>
<PRE>
public static <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>getSRSs</B>(<A HREF="../../../../org/geotools/data/ows/WMSCapabilities.html" title="class in org.geotools.data.ows">WMSCapabilities</A>&nbsp;capabilities)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
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<A NAME="findCommonEPSGs(java.util.List)"><!-- --></A><H3>
findCommonEPSGs</H3>
<PRE>
public static <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>findCommonEPSGs</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/List.html" title="class or interface in java.util">List</A>&nbsp;layers)</PRE>
<DL>
<DD>Given a list of type Layer, return all EPSG codes that is supported
 by all of the layers. This is an intersection of each layer's SRS set.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>layers</CODE> - A List of type Layer
<DT><B>Returns:</B><DD>a Set of type String, containin EPSG codes, or empty if none found</DL>
</DD>
</DL>
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<A NAME="matchEPSG(org.opengis.referencing.crs.CoordinateReferenceSystem, java.util.Set)"><!-- --></A><H3>
matchEPSG</H3>
<PRE>
public static <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>matchEPSG</B>(CoordinateReferenceSystem&nbsp;crs,
                               <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Set.html" title="class or interface in java.util">Set</A>&nbsp;codes)</PRE>
<DL>
<DD>Given a CRS and a Set of type String consisting of EPSG CRS codes
 (such as "EPSG:4326"), it will check the transform that exists between
 each EPSG code's CRS and the given CRS. If this is the identity
 transform, meaning the CRS is equivalent to the EPSG code, 
 the used EPSG code will be returned. The first valid EPSG code found
 is returned, so it is possibly that multiple valid codes exist.
 
 If no such identity transform can be found, null will be returned.
 
 If this method is succesful, the result is stored in a cache, which is
 called in subsequent calls.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>crs</CODE> - a CRS that is to be compared to each EPSG code in codes<DD><CODE>codes</CODE> - a Set of type String containing EPSG codes
<DT><B>Returns:</B><DD>an EPSG code that correspondes to crs, or null if one can't be found</DL>
</DD>
</DL>
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