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Hi there,

I got a XML file looking like that:

<Entries>
<Entry Id=1>
<First></First>
<Second></Second>
<Third></Third>
</Entry>
<Entry Id=2>
<First></First>
<Second></Second>
<Third></Third>
<Fourth></Fourth>
</Entry>.
[...]

<Entries>


I would like to check whether there exists a tag inside one of the
"Entry"s e.g. "Fourth".

I tried something like:

<xsl:template match="First">

<xsl:when test="..//Fourth">
<xsl:text>Found it</xsl:text>
</xsl:when>

<xsltherwise>
<xsl:text>Didn't find it</xsl:text>
</xsltherwise>

</xsl:template>

But it somehow doesn't work - I don't know why - probably, because I am
quite new to this . Any idea?

Greetings,
- Tassilo -

Tassilo J. Klein <> wrote:
> Hi there,
>
> I got a XML file looking like that:
>
> <Entries>
> <Entry Id=1>
> <First></First>
> <Second></Second>
> <Third></Third>
> </Entry>
> <Entry Id=2>
> <First></First>
> <Second></Second>
> <Third></Third>
> <Fourth></Fourth>
> </Entry>.
> [...]
>
> <Entries>
>
>
> I would like to check whether there exists a tag inside one of the
> "Entry"s e.g. "Fourth".

To test if 'Entry' is right above 'Fourth',

start () { # Usage: start tag att=value ...
if [[ $1 == Fourth ]]; then
n=$XML_ELEMENT_STACK
if [[ ${XML_ELEMENT_STACK[n+1+1]} == Entry ]]; then
echo found Entry/Fourth
fi
fi
}
xml -s start "<Entries>...</Entries>"

To test if 'Entry' is anywhere above 'Fourth',

start () { # Usage: start tag att=value ...
if [[ $1 == Fourth ]]; then
n=$XML_ELEMENT_STACK
if [[ ${XML_ELEMENT_STACK[*]|/Entry} }}; then
echo found Entry/.../Fourth
fi
fi
}
xml -s start "<Entries>...</Entries>"

Ref:
http://freshmeat.net/projects/bashdiff/
http://home.eol.ca/~parkw/index.html#xml
help xml

>
> I tried something like:
>
> <xsl:template match="First">
>
> <xsl:when test="..//Fourth">
> <xsl:text>Found it</xsl:text>
> </xsl:when>
>
> <xsltherwise>
> <xsl:text>Didn't find it</xsl:text>
> </xsltherwise>
>
> </xsl:template>
>
> But it somehow doesn't work - I don't know why - probably, because I am
> quite new to this . Any idea?
>
> Greetings,
> - Tassilo -

--
William Park <>
Open Geometry Consulting, Toronto, Canada

Ooops, I forgot to mention, that I am using XLST to produce HTML and
therefore want to make those checks using XLS.

> Tassilo J. Klein <> wrote:
>
>>Hi there,
>>
>>I got a XML file looking like that:
>>
>><Entries>
>> <Entry Id=1>
>> <First></First>
>> <Second></Second>
>> <Third></Third>
>> </Entry>
>> <Entry Id=2>
>> <First></First>
>> <Second></Second>
>> <Third></Third>
>> <Fourth></Fourth>
>> </Entry>.
>> [...]
>>
>><Entries>
>>
>>
>>I would like to check whether there exists a tag inside one of the
>>"Entry"s e.g. "Fourth".
>
>
> To test if 'Entry' is right above 'Fourth',
>
> start () { # Usage: start tag att=value ...
> if [[ $1 == Fourth ]]; then
> n=$XML_ELEMENT_STACK
> if [[ ${XML_ELEMENT_STACK[n+1+1]} == Entry ]]; then
> echo found Entry/Fourth
> fi
> fi
> }
> xml -s start "<Entries>...</Entries>"
>
> To test if 'Entry' is anywhere above 'Fourth',
>
> start () { # Usage: start tag att=value ...
> if [[ $1 == Fourth ]]; then
> n=$XML_ELEMENT_STACK
> if [[ ${XML_ELEMENT_STACK[*]|/Entry} }}; then
> echo found Entry/.../Fourth
> fi
> fi
> }
> xml -s start "<Entries>...</Entries>"
>
> Ref:
> http://freshmeat.net/projects/bashdiff/
> http://home.eol.ca/~parkw/index.html#xml
> help xml
>
>
>>I tried something like:
>>
>><xsl:template match="First">
>>
>> <xsl:when test="..//Fourth">
>> <xsl:text>Found it</xsl:text>
>> </xsl:when>
>>
>> <xsltherwise>
>> <xsl:text>Didn't find it</xsl:text>
>> </xsltherwise>
>>
>></xsl:template>
>>
>>But it somehow doesn't work - I don't know why - probably, because I am
>>quite new to this . Any idea?
>>
>>Greetings,
>> - Tassilo -
>
>

William Park wrote:

> To test if 'Entry' is anywhere above 'Fourth',
>
> start () { # Usage: start tag att=value ...
> if [[ $1 == Fourth ]]; then
> n=$XML_ELEMENT_STACK
> if [[ ${XML_ELEMENT_STACK[*]|/Entry} }}; then
> echo found Entry/.../Fourth
> fi
> fi
> }
> xml -s start "<Entries>...</Entries>"

Your mechanism for stacking the elements is really useful.
Quite interesting to see how you integrated this into bash.
But (as you might have guessed) I prefer the xmlgawk solution:


XMLSTARTELEM == "Fourth" { found=1 }

END {
if (found)
print "Found it"
else
print "Didn't find it"
}

kahrs <> wrote:
> William Park wrote:
>
> > To test if 'Entry' is anywhere above 'Fourth',
> >
> > start () { # Usage: start tag att=value ...
> > if [[ $1 == Fourth ]]; then
> > n=$XML_ELEMENT_STACK
> > if [[ ${XML_ELEMENT_STACK[*]|/Entry} }}; then
> > echo found Entry/.../Fourth
> > fi
> > fi
> > }
> > xml -s start "<Entries>...</Entries>"
>
> Your mechanism for stacking the elements is really useful.
> Quite interesting to see how you integrated this into bash.
> But (as you might have guessed) I prefer the xmlgawk solution:
>
>
> XMLSTARTELEM == "Fourth" { found=1 }
>
> END {
> if (found)
> print "Found it"
> else
> print "Didn't find it"
> }

Hello. But, how do you check if it's below element 'Entry'? Even if
you do something like
XMLSTARTELEM == "Entry" { foundEntry = 1 }
XMLSTARTELEM == "Fourth" && foundEntry { found = 1 }
it only tells you that Awk has encountered element 'Entry' and then
element 'Fourth'.

--
William Park <>
Open Geometry Consulting, Toronto, Canada

> But it somehow doesn't work - I don't know why - probably, because I am
> quite new to this . Any idea?

1. The provided XML file is not well-formed :

> <Entries>
> <Entry Id=1>
^
Put this into quotes : Id="1" (same thing for Id="2")

> [...]
> <Entries>

Should close the tag : </Entries>

2. xsl:when and xsl;otherwise need to be in a xsl:choose element :

<xsl:choose>
<xsl:when .... > ... </xsl:when>
<xsltherwise> ... </xsltherwise>
</xsl:choose>

When these changes are done, this works perfectly

These typos are easily detectable with a xml editor (as cooktop by example).

Hth

--
Rémi Peyronnet

Well, thanks - but the mistakes you mentioned I just forgot in the
message I posted but I actually had it in my .xsl file.

But thanks even though

Rémi Peyronnet wrote:
>> But it somehow doesn't work - I don't know why - probably, because I
>> am quite new to this . Any idea?
>
>
> 1. The provided XML file is not well-formed :
>
> > <Entries>
> > <Entry Id=1>
> ^
> Put this into quotes : Id="1" (same thing for Id="2")
>
> > [...]
> > <Entries>
>
> Should close the tag : </Entries>
>
> 2. xsl:when and xsl;otherwise need to be in a xsl:choose element :
>
> <xsl:choose>
> <xsl:when .... > ... </xsl:when>
> <xsltherwise> ... </xsltherwise>
> </xsl:choose>
>
> When these changes are done, this works perfectly
>
> These typos are easily detectable with a xml editor (as cooktop by
> example).
>
> Hth
>

William Park wrote:

> Hello. But, how do you check if it's below element 'Entry'? Even if
> you do something like
> XMLSTARTELEM == "Entry" { foundEntry = 1 }
> XMLSTARTELEM == "Fourth" && foundEntry { found = 1 }
> it only tells you that Awk has encountered element 'Entry' and then
> element 'Fourth'.

Correct, your bash solutions uses the bash-internal element
stack and searches in it for "Fourth". In xmlgawk, I have
to emulate the element stack with gawk's associative arrays:

BEGIN { XMLMODE=1 ; found="Didn't find it" }

XMLSTARTELEM { elms[XMLSTARTELEM]=1 }

XMLENDELEM { delete elms[XMLSTARTELEM] }

XMLSTARTELEM == "Fourth" {
found="Found it"
if ("Entry" in elms)
print "'Fourth' is under 'Entry'"
else
print "'Fourth' is not under 'Entry'"
}

END { print found }

kahrs <> wrote:
> William Park wrote:
>
> > Hello. But, how do you check if it's below element 'Entry'? Even if
> > you do something like
> > XMLSTARTELEM == "Entry" { foundEntry = 1 }
> > XMLSTARTELEM == "Fourth" && foundEntry { found = 1 }
> > it only tells you that Awk has encountered element 'Entry' and then
> > element 'Fourth'.
>
> Correct, your bash solutions uses the bash-internal element
> stack and searches in it for "Fourth". In xmlgawk, I have
> to emulate the element stack with gawk's associative arrays:
>
> BEGIN { XMLMODE=1 ; found="Didn't find it" }
>
> XMLSTARTELEM { elms[XMLSTARTELEM]=1 }
>
> XMLENDELEM { delete elms[XMLSTARTELEM] }
>
> XMLSTARTELEM == "Fourth" {
> found="Found it"
> if ("Entry" in elms)

Okey, I got it. Much cleaner than I'd imagined.

> print "'Fourth' is under 'Entry'"
> else
> print "'Fourth' is not under 'Entry'"
> }
>
> END { print found }

--
William Park <>
Open Geometry Consulting, Toronto, Canada

In article <cg5mdm$8nt$04$>,
Tassilo J. Klein <> wrote:
% Ooops, I forgot to mention, that I am using XLST to produce HTML and
% therefore want to make those checks using XLS.

An XPath which matches all Entry elements which contain a Fourth element is

//Entry[Fourth]

You can use this as part of a test, match, or select expression in XSLT. For
instance (you don't need // xsl:template's match attribute)

<xsl:template match='Entry[Fourth]'>
My favourite Entry is number <xsl:value-of select='@Id'/>.
</xsl:template>

or (ok, this isn't quite the same expression)

<xsl:template match='Entry'>
Blah blah blah
<xsl:if test='Fourth'>
This Entry has a Fourth element.
</xsl:if>
</xsl:template>

or how about

<xsl:template match='/'>
We do something with all Entry elements containing fourth:
<xsl:apply-templates mode='withfourth' select='//Entry[Fourth]'/>
Then we do something else with the whole document:
<xsl:apply-templates/>
</xsl:template>

<xsl:template mode='withfourth' match="*">
Blah blah blah.
</xsl:template>

...
--

Patrick TJ McPhee
East York Canada