extract-gml.xsl

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:gmi="http://standards.iso.org/iso/19115/-2/gmi/1.0"
xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:gsr="http://www.isotc211.org/2005/gsr" xmlns:gco="http://www.isotc211.org/2005/gco"
xmlns:gts="http://www.isotc211.org/2005/gts" xmlns:gss="http://www.isotc211.org/2005/gss"
xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gml="http://www.opengis.net/gml/3.2"
xmlns:srv="http://www.isotc211.org/2005/srv"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:output method="xml" indent="no"/>
    <xsl:template match="/" priority="2">
        <gml:GeometryCollection >
            <xsl:apply-templates/>
        </gml:GeometryCollection>
    </xsl:template>
    <xsl:template match="*">
        <xsl:apply-templates/>
    </xsl:template>

    <xsl:template match="text()"/>

        <xsl:template match="gmd:EX_BoundingPolygon[string(gmd:extentTypeCode/gco:Boolean) != 'false' and string(gmd:extentTypeCode/gco:Boolean) != '0']" priority="2">
            <xsl:for-each select="gmd:polygon/gml:*">
                <xsl:copy-of select="."/>
            </xsl:for-each>
    </xsl:template>

    <xsl:template match="gmd:EX_GeographicBoundingBox" priority="2">
        <xsl:variable name="w" select="./gmd:westBoundLongitude/gco:Decimal/text()"/>
        <xsl:variable name="e" select="./gmd:eastBoundLongitude/gco:Decimal/text()"/>
        <xsl:variable name="n" select="./gmd:northBoundLatitude/gco:Decimal/text()"/>
        <xsl:variable name="s" select="./gmd:southBoundLatitude/gco:Decimal/text()"/>
            <xsl:if test="$w!='' and $e!='' and $n!='' and $s!=''">
                <gml:Polygon>
                    <gml:exterior>
                        <gml:LinearRing>
                            <gml:posList srsDimension="2">
                                <xsl:value-of select="$w"/>&#160;<xsl:value-of select="$n"/>&#160;<xsl:value-of select="$e"/>&#160;<xsl:value-of select="$n"/>&#160;<xsl:value-of select="$e"/>&#160;<xsl:value-of select="$s"/>&#160;<xsl:value-of select="$w"/>&#160;<xsl:value-of select="$s"/>&#160;<xsl:value-of select="$w"/>&#160;<xsl:value-of select="$n"/>
                            </gml:posList>
                        </gml:LinearRing>
                    </gml:exterior>
                </gml:Polygon>
            </xsl:if>
    </xsl:template>
</xsl:stylesheet>