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copied!<p>There are two fairly simple ways that come quickly to mind.</p> <p>(1) In your template for <code>test-message</code>, include two <code>test-message</code> output elements, each containing an <code>apply-templates</code> instruction. Give <code>apply-templates</code> a parameter to distinguish the first and second calls.</p> <p>Say, something like (not tested):</p> <pre><code><xsl:template match="test-message"> <test-message> <xsl:apply-templates> <xsl:with-param name="flag" select="1"/> </xsl:apply-templates> </test-message> <test-message> <xsl:apply-templates> <xsl:with-param name="flag" select="2"/> </xsl:apply-templates> </test-message> </xsl:template> </code></pre> <p>In the template for <code>segment</code>, write out a copy of the element if (a) $flag = 1 and neither this segment nor any preceding sibling segment has an id of <code>OBR</code> or <code>ORC</code>, or else if (b) $flag = 2 and this segment or some preceding sibling segment has such an <code>id</code>. Something like</p> <pre><code><xsl:template match="segment"> <xsl:param name="flag"/> <xsl:if test="( $flag = 1 and not(@id = ('ORC', 'OBR')) and not(preceding-sibling::segment [@id=('ORC','OBR')]) ) or ( $flag = 2 and ((@id = ('ORC', 'OBR')) or preceding-sibling::segment [@id=('ORC','OBR')] )"> <xsl:copy-of select="."/> </xsl:if> </code></pre> <p></p> <p>(2) Make the <code>test-message</code> template as above, but add <code>select="./segment[1]"</code> to the two calls to <code>xsl:apply-templates</code>.</p> <p>Then make the template for <code>segment</code> do its work and then recur on its immediately following sibling. To keep the logic simple, we distinguish several cases: first, <code>$flag=1</code> and we haven't seen OBR or ORC yet: copy the current element and keep going.</p> <pre><code><xsl:template match="segment"> <xsl:param name="flag"/> <xsl:choose> <xsl:when test="$flag=1 and not(@id=('OBR', 'ORC'))"> <xsl:copy-of select="."/> <xsl:if test="not(@id=('OBR','ORC'))"> <xsl:apply-templates select="following-sibling::*[1]"> <xsl:with-param name="flag" select="$flag"/> </xsl:apply-templates> </xsl:if> </xsl:when> </code></pre> <p>Second, <code>$flag = 1</code> and we are now encountering OBR or ORC. Don't copy the current element and don't keep going; the first <code>test-message</code> element is now completed.</p> <pre><code> <xsl:when test="$flag=1 and @id=('OBR', 'ORC')">  </xsl:when> </code></pre> <p>Third, <code>$flag = 2</code> and we haven't yet encountered OBR or ORC. Keep going.</p> <pre><code> <xsl:when test="$flag=2 and not(@id=('OBR', 'ORC'))">  <xsl:apply-templates select="following-sibling::*[1]"> <xsl:with-param name="flag" select="$flag"/> </xsl:apply-templates> </xsl:when> </code></pre> <p>Fourth, <code>$flag = 2</code> and we are now encountering OBR or ORC. Copy the current element and keep going; switch the flag to a third value which means we are in the second <code>test-message</code> element and we have seen OBR or ORC:</p> <pre><code> <xsl:when test="$flag=2 and @id=('OBR', 'ORC')"> <xsl:copy-of select="."/> <xsl:apply-templates select="following-sibling::*[1]"> <xsl:with-param name="flag" select="3"/> </xsl:apply-templates> </xsl:when> </code></pre> <p>Finally, if <code>$flag = 3</code> then we just copy the current element and keep going.</p> <pre><code> <xsl:when test="$flag=3"> <xsl:copy-of select="."/> <xsl:apply-templates select="following-sibling::*[1]"> <xsl:with-param name="flag" select="3"/> </xsl:apply-templates> </xsl:when> </xsl:choose> </xsl:template> </code></pre>

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