Re: How to store a sequence into an element ... andma

  > Dimitre, I am trying to avoid the overhead of markup. In matrices I
don't want the overhead that markup incurs. Instead, I want plain old
sequences. Liam talked about this in a post last week.

Great. Then just use arrays or maps. I was under the impression that you
wanted to **store** permanently the list and this is why you had to make it
part of an XML document.

So, the question is: how would the permanent storage representation of the
list/matrice data be chosen.



On Sun, Jul 19, 2020 at 3:21 PM Dr. Roger L Costello costello@xxxxxxxxx <
xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:

> Michael, upon further reflection I realized that what you are saying is to
> replace this markup:
>
>    <Document>
>        <Greeting>My List</Greeting>
>        <List><xsl:sequence select="$list" /></List>
>        <Ending>The End</Ending>
>    </Document>
>
> with a map:
>
> <xsl:variable name="Document" as="map(xs:string, item()*)">
>     <xsl:map>
>         <xsl:map-entry key="'Greeting'" select="('My List')"/>
>         <xsl:map-entry key="'List'" select="(1,2,3)"/>
>         <xsl:map-entry key="'Ending'" select="('The End')"/>
>     </xsl:map>
> </xsl:variable>
>
> My application will process the map rather than markup. Neat!
>
> Dimitre, I am trying to avoid the overhead of markup. In matrices I don't
> want the overhead that markup incurs. Instead, I want plain old sequences.
> Liam talked about this in a post last week.
>
> /Roger
>
> -----Original Message-----
> From: Dr. Roger L Costello costello@xxxxxxxxx <
> xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
> Sent: Sunday, July 19, 2020 5:26 PM
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: [EXT] Re:  How to store a sequence into an element ...
> andmaintainthe sequence inside the element?
>
> Hello Michael,
>
> Ah, so I think what you are saying is that I could store the sequence in a
> map and then overwrite the sequence that is in the map. Something like this:
>
> <xsl:variable name="list" as="map(xs:string, xs:integer*)">
>     <xsl:map>
>         <xsl:map-entry key="'li'" select="(1,2,3)"/>
>     </xsl:map>
> </xsl:variable>
> ... do some processing and then update the list ...
> <xsl:variable name="list" select="map:put($list, 'li', (4,1,5))"/>
> ... do some more processing and then update the list ...
> <xsl:variable name="list" select="map:put($list, 'li', (9,9,0))"/>
> ... do some more processing and then update the list ...
>
> Right?
>
> /Roger
>
> From: Michael Kay mike@xxxxxxxxxxxx <
> xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
> Sent: Sunday, July 19, 2020 4:58 PM
> To: xsl-list <xsl-list@xxxxxxxxxxxxxxxxxxxxxx>
> Subject: [EXT] Re:  How to store a sequence into an element ... and
> maintainthe sequence inside the element?
>
> That's the point Liam was making last week - XML is very text-oriented.
> When you add a list of numbers to a document it gets serialized as a
> string. As Martin says, you can turn it back into a sequence of numbers by
> validating against a list type defined in a schema. But that's very
> limiting, which is why XSLT 3.0 introduced maps and arrays.
>
> Michael Kay
> Saxonica
>
>
> On 19 Jul 2020, at 20:14, Dr. Roger L Costello mailto:costello@xxxxxxxxx
> <mailto:xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> Hi Folks,
>
> I created a sequence (1, 2, 3) as follows:
>
> <xsl:variable name="list" select="(1, 2, 3)" as="xs:integer*" />
>
> I checked that $list contains 3 integers:
>
> <xsl:message>count($list) = <xsl:value-of
> select="count($list)"/></xsl:message>
>
> Sure enough, the output shows that there are 3 items:
>
> count($list) = 3
>
> Next, I want to store that sequence of integers in an element, along with
> other elements:
>
> <xsl:variable name="document" as="element(Document)">
>    <Document>
>        <Greeting>My List</Greeting>
>        <List><xsl:sequence select="$list" /></List>
>        <Ending>The End</Ending>
>    </Document>
> </xsl:variable>
>
> Does the <List> element contain a sequence of 3 integers:
>
> <xsl:message>count($document/List) = <xsl:value-of
> select="count($document/List)"/></xsl:message>
>
> Yikes! No it doesn't:
>
> count($document/List) = 1
>
> How to do what I want to do? That is, how to store the sequence of
> integers in an element, along with other elements, such that I can pull the
> sequence out of the element and immediately operate on the sequence? If
> that can't be done, then what's the right way to do what I want to do?
>
> Here is my XSLT program:
>
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
>    xmlns:xs="http://www.w3.org/2001/XMLSchema"
>    version="3.0">
>
>    <xsl:template match="/">
>        <xsl:variable name="list" select="(1, 2, 3)" as="xs:integer*" />
>        <xsl:message>count($list) = <xsl:value-of
> select="count($list)"/></xsl:message>
>        <xsl:variable name="document" as="element(Document)">
>            <Document>
>                <Greeting>My List</Greeting>
>                <List><xsl:sequence select="$list" /></List>
>                <Ending>The End</Ending>
>            </Document>
>        </xsl:variable>
>        <xsl:message>count($document/List) = <xsl:value-of
> select="count($document/List)"/></xsl:message>
>    </xsl:template>
> </xsl:stylesheet>
>
> /Roger
>
> http://www.mulberrytech.com/xsl/xsl-list
> http://lists.mulberrytech.com/unsub/xsl-list/673357 ()
> 
>


-- 
Cheers,
Dimitre Novatchev
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Truly great madness cannot be achieved without significant intelligence.
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To invent, you need a good imagination and a pile of junk
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Never fight an inanimate object
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To avoid situations in which you might make mistakes may be the
biggest mistake of all
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Quality means doing it right when no one is looking.
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You've achieved success in your field when you don't know whether what
you're doing is work or play
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To achieve the impossible dream, try going to sleep.
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Typing monkeys will write all Shakespeare's works in 200yrs.Will they write
all patents, too? :)
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Sanity is madness put to good use.
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I finally figured out the only reason to be alive is to enjoy it.