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--><H2><FONT SIZE="-1">org.geotools.coverage.io</FONT><BR>Class MetadataBuilder</H2><PRE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><B>MetadataBuilder</B></PRE><HR><DL><DT>public class <B>MetadataBuilder</B><DT>extends <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></DL><P>Helper class for creating OpenGIS's object from a set of metadata. Metadata are <cite>key-value</cite> pairs, for example . There is a wide variety of ways to contruct OpenGIS's objects from <cite>key-value</cite> pairs, and supporting them is not always straightforward. The class tries to make the work easier. It defines a set of format-neutral keys (i.e. keys not related to any specific file format). Before parsing a file, the mapping between format-neutral keys and "real" keys used in a particuler file format <strong>must</strong> be specified. This mapping is constructed with calls to <A HREF="../../../../org/geotools/coverage/io/MetadataBuilder.html#addAlias(org.geotools.coverage.io.MetadataBuilder.Key, java.lang.String)"><CODE>addAlias(org.geotools.coverage.io.MetadataBuilder.Key, java.lang.String)</CODE></A>. For example, one may want to parse the following informations: <blockquote><pre> XMinimum = 217904.31 YMaximum = 5663495.1 XResolution = 1000.0000 YResolution = 1000.0000 Units = meters Projection = Mercator_1SP Central meridian = -15.2167 Latitude of origin = 28.0667 False easting = 0.00000000 False northing = 0.00000000 Ellipsoid = Clarke 1866 Datum = Clarke 1866 </pre></blockquote> Before to be used for parsing such informations, a object must be setup using the following code: <blockquote><pre> addAlias(<A HREF="../../../../org/geotools/coverage/io/MetadataBuilder.html#X_MINIMUM"><CODE>X_MINIMUM</CODE></A>, "XMinimum"); addAlias(<A HREF="../../../../org/geotools/coverage/io/MetadataBuilder.html#Y_MAXIMUM"><CODE>Y_MAXIMUM</CODE></A>, "YMaximum"); addAlias(<A HREF="../../../../org/geotools/coverage/io/MetadataBuilder.html#X_RESOLUTION"><CODE>X_RESOLUTION</CODE></A>, "XResolution"); addAlias(<A HREF="../../../../org/geotools/coverage/io/MetadataBuilder.html#Y_RESOLUTION"><CODE>Y_RESOLUTION</CODE></A>, "YResolution"); // etc... </pre></blockquote> Once the mapping is etablished, provides a set of methods for constructing various objects from those informations. For example, the <A HREF="../../../../org/geotools/coverage/io/MetadataBuilder.html#getCoordinateReferenceSystem()"><CODE>getCoordinateReferenceSystem()</CODE></A> method constructs a <CODE>CoordinateReferenceSystem</CODE> object using available informations.<P><P><DL><DT><B>Since:</B></DT> <DD>2.2</DD><DT><B>Author:</B></DT> <DD>Martin Desruisseaux</DD><DT><B>Module:</B></DT><DD><CODE><B>module/coverage</B></CODE> (<A HREF="http://maven.geotools.fr/repository/org/geotools/gt2-coverage/"><CODE>gt2-coverage.jar</CODE></A>) (<A HREF="http://maven.geotools.fr/reports/coverage/index.html">Maven report</A>) (<A HREF="http://svn.geotools.org/geotools/tags/2.3.2/module/coverage/src/org/geotools/coverage/io/MetadataBuilder.java">SVN head</A>)</DD></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><A NAME="nested_class_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Nested Class Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static class</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/coverage/io/MetadataBuilder.Key.html" title="class in org.geotools.coverage.io">MetadataBuilder.Key</A></B></CODE><BR> A key for fetching metadata in a format independent way. </TD>⌨️ 快捷键说明
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