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navigate to my next node or previous node for an attri

Subject: navigate to my next node or previous node for an attribute..
From: "Peter Gibbons-BU" <peter.gibbons.01@xxxxxxxxx>
Date: Mon, 24 Mar 2003 18:02:36 -0000
xml linebreak
Here's the xslt fragment I'm using. I have an xml tree of
'DBI/RESLUTSET/ROW/PAGES/'etc.  I'm interested in processing the 'PAGE'
nodes. I can receive an number of 'DBI/RESLUTSET/ROW/PAGES/' not just
the two highlighted in my example.

 
Whilst processing a Pages node, ie _name="1116"  I need to calculate,
the next Pages nodes value, ie  _name="1115" and my previous value ie
_name="1114".  The problem is complicated slightly by the fact that if
it's the last node, there will not be a next node so I need to get the
first node ie name="1116", and similar for the first node. When I am
processing this one, there will not be a previous node so I need to
return the last node, ie name="1114"  .I have struggled how to do this
in xslt, can some one help me out here. I tried using following &
preceeding but failed to get it working correctly


<xsl:for-each select="/DBI/RESULTSET/ROW/Pages">
    <xsl:variable name="SceneId2">t1_dt_<xsl:value-of
select="@scene_name" /></xsl:variable>
    <xsl:variable name="PreviousSceneId">t1_dt_<xsl:value-of
select="preceding::Pages/@scene_name"/></xsl:variable>
    <xsl:variable name="NextSceneId">t1_dt_<xsl:value-of
select="following::Pages/@scene_name"/></xsl:variable>
</xsl:for-each>

Here's my xml structure:

<DBI>
    <RESULTSET statement="SELECT items.id, items.title FROM items WHERE
items.node_id='0111'" scene_name="T1_dt_News_MainHeadlines">
        <ROW>
            <Pages scene_name="1116" type="story">
                <Page >Mo Mowlam Set To Attend Anti-War
Rally<LineBreak/><Style Colour="16">Former Northern Ireland Secretary Mo
Mowlam has said she is planning to attend next week's Stop the War
rally.<LineBreak/><LineBreak/>Ms Mowlam told Sky TV that she was hoping
to join the 400,000 people due to march to Hyde Park next
Saturday.</Style><LineBreak/></Page>
                <Page>Bid To Protect Coral Reef From
Fishing<LineBreak/><Style Colour="16">Concerns have been growing over
the effects of increased deep-sea trawling by French and Irish
fishermen.<LineBreak/><LineBreak/>New EU rules let states take action to
protect eco-systems, not
just fisheries.</Style><LineBreak/></Page>
            </Pages>
            <title>Bid To Protect Coral Reef From Fishing
</title>
        </ROW>
        <ROW>
            <Pages scene_name="1115">
                <Page>Mo Mowlam Set To Attend Anti-War
Rally<LineBreak/><Style Colour="16">Earlier, Lib Dem leader Charles
Kennedy told BBC1's Breakfast with Frost that he was also willing to
go.<LineBreak/><LineBreak/>The protest, organised by various groups, was
recently given the
go-ahead by Culture Secretary Tessa Jowell.</Style><LineBreak/></Page>
                <Page>Mo Mowlam Set To Attend Anti-War
Rally<LineBreak/><Style Colour="16">Former Northern Ireland Secretary Mo
Mowlam has said she is planning to attend next week's Stop the War
rally.<LineBreak/><LineBreak/>Ms Mowlam told Sky TV that she was hoping
to join the 400,000 people due to march to Hyde Park next
Saturday.</Style><LineBreak/></Page>
            </Pages>
            <title>Mo Mowlam Set To Attend Anti-War Rally
</title>
        </ROW>
        <ROW>
            <Pages scene_name="1114">
                <Page>Mo Mowlam Set To Attend Anti-War
Rally<LineBreak/><Style Colour="16">Earlier, Lib Dem leader Charles
Kennedy told BBC1's Breakfast with Frost that he was also willing to
go.<LineBreak/><LineBreak/>The protest, organised by various groups, was
recently given the
go-ahead by Culture Secretary Tessa Jowell.</Style><LineBreak/></Page>
                <Page>Mo Mowlam Set To Attend Anti-War
Rally<LineBreak/><Style Colour="16">Former Northern Ireland Secretary Mo
Mowlam has said she is planning to attend next week's Stop the War
rally.<LineBreak/><LineBreak/>Ms Mowlam told Sky TV that she was hoping
to join the 400,000 people due to march to Hyde Park next
Saturday.</Style><LineBreak/></Page>
            </Pages>
            <title>Mo Mowlam Set To Attend Anti-War Rally
</title>
        </ROW>
        
</DBI>
    </RESULTSET






Peter Gibbons 



BBCi at http://www.bbc.co.uk/

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