"tshad" <toms@p...> wrote in message 
news:ulW6EFsFKHA.3932@T......
>
> "Joe Fawcett" <joefawcett@n...> wrote in message 
> news:OzUX2arFKHA.3396@T......
>>
>> "tshad" <toms@p...> wrote in message 
>> news:#j$ftLrFKHA.3396@T......
>>>
>>> "Joe Fawcett" <joefawcett@n...> wrote in message 
>>> news:O5UvQAoFKHA.4732@T......
>>>>
>>>> "tshad" <toms@p...> wrote in message 
>>>> news:OjA0PNgFKHA.4316@T......
>>>>> I figured out how to do this by:
>>>>>
>>>>>   <source>
>>>>>      <xsl:if test="../../FIELDS/HEADER">
>>>>>            <xsl:value-of select="../../FIELDS/HEADER"/>
>>>>>      </xsl:if>
>>>>>      <xsl:if test="../../FIELDS/*[name() = 
>>>>> concat('TITLE',current()/@NUM)]">
>>>>>             <xsl:value-of select="../../FIELDS/*[name() = 
>>>>> concat('TITLE',current()/@NUM)]"/>
>>>>>       </xsl:if>
>>>>>   </source>
>>>>>
>>>>> But what I found that when both exists, it concatenates the 2nd test 
>>>>> with the first so that I end up with:
>>>>>
>>>>>
>>>>> Subject Photo PageThis is Title1
>>>>> Subject Photo Page
>>>>> Subject Photo PageThis is Title3
>>>>>
>>>>> How do you tell it to delete what is there (in the 1st and 3rd case) 
>>>>> and put the new value there.?
>>>>>
>>>>> I could put 2 tests in the first part, but I would prefer to write out 
>>>>> the Headers text and if the 2nd test passes to overwrite what the 
>>>>> Header test put there.  So I would end up with:
>>>>>
>>>>> This is Title1
>>>>> Subject Photo Page
>>>>> This is Title3
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Tom
>>>>>
>>>>> "tshad" <toms@p...> wrote in message 
>>>>> news:uZ9YNkfFKHA.1488@T......
>>>>>> How would you test if something exists?
>>>>>>
>>>>>> If you have:
>>>>>>
>>>>>>    <FORM>
>>>>>>        <FIELDS>
>>>>>>            <HEADER>Subject Photo Page</HEADER>
>>>>>>            <TITLE1>This is Title1</TITLE1>
>>>>>>            <TITLE3>This is Title3</TITLE3>
>>>>>>        </FIELDS>
>>>>>>        <FORMPHOTOS>
>>>>>>            <PHOTO NUM="1">
>>>>>>                <FILENAME>09May001.jpg</FILENAME>
>>>>>>                <FILETYPE>JPEG</FILETYPE>
>>>>>>            </PHOTO>
>>>>>>            <PHOTO NUM="2">
>>>>>>                <FILENAME>09005.jpg</FILENAME>
>>>>>>                <FILETYPE>JPEG</FILETYPE>
>>>>>>            </PHOTO>
>>>>>>            <PHOTO NUM="3">
>>>>>>                <FILENAME>09002.jpg</FILENAME>
>>>>>>                <FILETYPE>JPEG</FILETYPE>
>>>>>>            </PHOTO>
>>>>>>        </FORMPHOTOS>
>>>>>>    </FORM>
>>>>>>
>>>>>> And I want to test if a name exists:
>>>>>>
>>>>>> Something like:
>>>>>>
>>>>>> <xsl:template match="FORMPHOTOS/PHOTO">
>>>>>>  <xsl:choose>
>>>>>>   <xsl:when test=". != ''">
>>>>>>    <attachment>
>>>>>>     <source>
>>>>>>        <xsl:choose>
>>>>>>
>>>>>>         <xsl:when test="name() = concat('TITLE',current()/@NUM) 
>>>>>> exists"> <--------
>>>>>>
>>>>>>                    <xsl:value-of select="../../FIELDS/*[name() = 
>>>>>> concat('TITLE',current()/@NUM)]"/>
>>>>>>         </xsl:when>
>>>>>>         <xsl:otherwise>
>>>>>>                   <xsl:value-of select="../../FIELDS/HEADER"/>
>>>>>>         </xsl:otherwise>
>>>>>>        </xsl:choose>
>>>>>>     </source>
>>>>>>    </attachment>
>>>>>>   </xsl:when>
>>>>>>  </xsl:choose>
>>>>>> </xsl:template>
>>>>>>
>>>>>> What I want to happen here is that for the nodes that have NUM = 1 or 
>>>>>> 3 to use TITLE1 and TITLE3 (since they exist), otherwise use HEADER.
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> Tom
>>>>>>
>>>>>
>>>>>
>>>>
>>>> You could use something like this:
>>>> <?xml version="1.0" encoding="utf-8"?>
>>>> <xsl:stylesheet version="1.0" 
>>>> xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
>>>>    <xsl:output method="xml" indent="yes"/>
>>>>
>>>>    <xsl:template match="/">
>>>>        <photos>
>>>>            <xsl:apply-templates select="FORM/FORMPHOTOS/PHOTO"/>
>>>>        </photos>
>>>>    </xsl:template>
>>>>
>>>>  <xsl:template match="PHOTO">
>>>>    <photo NUM="{@NUM}">
>>>>      <xsl:variable name="titleElementName" select="concat('TITLE', 
>>>> @NUM)" />
>>>>      <xsl:choose>
>>>>        <xsl:when test="/FORM/FIELDS/*[local-name() = 
>>>> $titleElementName]">
>>>>          <xsl:value-of select="/FORM/FIELDS/*[local-name() = 
>>>> $titleElementName]" />
>>>>        </xsl:when>
>>>>        <xsl:otherwise>
>>>>          <xsl:value-of select="/FORM/FIELDS/HEADER" />
>>>>        </xsl:otherwise>
>>>>      </xsl:choose>
>>>>    </photo>
>>>>  </xsl:template>
>>>>
>>>> </xsl:stylesheet>
>>>>
>>>> The XML schema is poor, having elements like TITLE1, TITLE2 etc will 
>>>> always make processing difficult, better to use attributes:
>>>> <TITLE number="1" />
>>>> for example.
>>>
>>> That looks good.
>>>
>>> I agree on the TITLE1 and TITLE2 issue but the XML that I am processing 
>>> is not mine so I have no control over the names of the elements.
>>>
>>> I did find another way to solve the checking if a name exists:
>>>
>>>      <xsl:if test="../../FIELDS/HEADER">
>>>       <xsl:value-of select="../../FIELDS/HEADER"/>
>>>      </xsl:if>
>>>      <xsl:if test="../../FIELDS/*[name() = 
>>> concat('TITLE',current()/@NUM)]">
>>>       <xsl:value-of select="../../FIELDS/*[name() = 
>>> concat('TITLE',current()/@NUM)]"/>
>>>      </xsl:if>
>>>
>>> This one works fine but if HEADER exists and TITLEx exists, then they 
>>> will concatenate.
>>>
>>> That was the other question I had, how to get the 2nd test to wipe out 
>>> whatever is in the field instead of concatenating. The above could end 
>>> up with:
>>>
>>> Subject Photo PageThis is Title1
>>>
>>> instead of:
>>>
>>> This is Title1
>>>
>>> Because HEADER existed.
>>>
>>> I solved this problem by using a CHOOSE instead of IF.
>>>
>>>      <xsl:choose>
>>>         <xsl:when test="../../FIELDS/*[name() = 
>>> concat('TITLE',current()/@NUM)]">
>>>            <xsl:value-of select="../../FIELDS/*[name() = 
>>> concat('TITLE',current()/@NUM)]"/>
>>>         </xsl:when>
>>>         <xsl:when test="../../FIELDS/HEADER">
>>>             <xsl:value-of select="../../FIELDS/HEADER"/>
>>>         </xsl:when>
>>>      </xsl:choose>
>>>
>>> In this case Header will not happen if TITLEx is found.
>>>
>>> But is there a way to make the work where by default HEADER will get 
>>> written out and if TITLEx is found, it will overwrite what was in HEADER 
>>> instead of just adding to it.
>>>
>>>      <xsl:value-of select="../../FIELDS/HEADER"/>
>>>      <xsl:if test="../../FIELDS/*[name() = 
>>> concat('TITLE',current()/@NUM)]">
>>>           <xsl:value-of select="../../FIELDS/*[name() = 
>>> concat('TITLE',current()/@NUM)]"/>
>>>      </xsl:if>
>>>
>>> Thanks,
>>>
>>> Tom
>>>>
>>>> Regards
>>>>
>>>> -- 
>>>>
>>>> Joe Fawcett (MVP - XML)
>>>> http://joe.fawcett.name
>>>
>>>
>>
>> I don't quite understand, my stylesheet outputs the relevant TITLEx if 
>> it's there, otherwise the HEADER element.
>>
>
> Not sure why yours is working.  Are you using:
>
>      <xsl:value-of select="../../FIELDS/HEADER"/>
>      <xsl:if test="../../FIELDS/*[name() = 
> concat('TITLE',current()/@NUM)]">
>           <xsl:value-of select="../../FIELDS/*[name() = 
> concat('TITLE',current()/@NUM)]"/>
>      </xsl:if>
>
> This one in my file always puts the 2 together if the TITLEx exists. 
> Otherwise only the HEADER is shown.
>
> Thanks,
>
> Tom
>> -- 
>>
>> Joe Fawcett (MVP - XML)
>> http://joe.fawcett.name
>
>

I don't understand why you can't just read the post...
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:output method="xml" indent="yes"/>

    <xsl:template match="/">
        <photos>
            <xsl:apply-templates select="FORM/FORMPHOTOS/PHOTO"/>
        </photos>
    </xsl:template>

  <xsl:template match="PHOTO">
    <photo NUM="{@NUM}">
      <xsl:variable name="titleElementName" select="concat('TITLE', @NUM)"
/>
      <xsl:choose>
        <xsl:when test="/FORM/FIELDS/*[local-name() = $titleElementName]">
          <xsl:value-of select="/FORM/FIELDS/*[local-name() =
$titleElementName]" />
        </xsl:when>
        <xsl:otherwise>
          <xsl:value-of select="/FORM/FIELDS/HEADER" />
        </xsl:otherwise>
      </xsl:choose>
    </photo>
  </xsl:template>


I use an xsl:choose. xsl:when the TITLEx element exists I show it, 
xsl:otherwise I show the default value.
You can't 'overwrite' in a functional language as the concept of one 
instruction coming after another doesn't apply in the same way as it does 
for procedural code.

-- 

Joe Fawcett (MVP - XML)
http://joe.fawcett.name