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Ash  
#1 Posted : Saturday, February 23, 2019 7:41:23 AM(UTC)
Ash

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Hi

I have an XML document with a large number of fields.

I want to select a block of data using 'position' eg


<?xml version="1.0" encoding="UTF-8"?>
<Main>
<Data>
<Field no="1">Name1</Field>
<Field no="2">Name2</Field>
.....
.....

</Data?
</Main>

I used //Field[5 <= position() and position() <= 10] which gives me a result using https://www.freeformatte...th-tester.html#ad-output

<Field no="1">Name1</Field>
<Field no="2">Name2</Field>
<Field no="3">Name3</Field>
<Field no="4">Name4</Field>
<Field no="5">Name5</Field>

ok good, so i plugged that into vMixx and get

|no|#text
|5|name1
|6|name2
|7|name3
|8|name4
|9|name5

So I don't want the "no" column just the name data. [EDIT it's returning the attribute 'no' ? ]

I tried //Field[position() <= 5 and position() <= 10]/text() in https://www.freeformatte...th-tester.html#ad-output

and it returns

name1
name2
name3
name4
name5

Plug that into Xpath in Data Sources and I get an "ERROR: Object reference not set to an instance of an object"

Sorta stumped, has anyone some advice?

Regards
Ash
kjones9999  
#2 Posted : Saturday, February 23, 2019 3:30:52 PM(UTC)
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I am not getting the same based on the post BUT

try this:
//Field [position() >=2 and position() <= 10]

If that doesn't work try this
//Field [position() >=1 and position() <= 10]
Ash  
#3 Posted : Sunday, February 24, 2019 4:51:52 AM(UTC)
Ash

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Originally Posted by: kjones9999 Go to Quoted Post
I am not getting the same based on the post BUT

try this:
//Field [position() >=2 and position() <= 10]

If that doesn't work try this
//Field [position() >=1 and position() <= 10]


Thanks kjones9999, tried both and it still returns the "no" attribute as a column.

Seems I am getting an error when ever I try to use the /text() to extrat the inner text value of "Field", maybe text() is not installed in XML version in vMix or I am not understanding the usage correctly

In any case I have used a work around in vMix Data Source by assigning the Column for each text place holder in the GT title and that works.

Incidently I do not have control over the XML file as that is generated from a 3rd party app from the scoreboard source.

Ash




kjones9999  
#4 Posted : Sunday, February 24, 2019 4:27:11 PM(UTC)
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I see-- you must be leaving something out of the feed because I posted what you had and it worked in the validator.
kjones9999  
#5 Posted : Monday, February 25, 2019 2:16:16 AM(UTC)
kjones9999

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Actually I loaded in to vmix and that first row is treated as a column label and vmix does not use it.
thanks 1 user thanked kjones9999 for this useful post.
Ash on 2/25/2019(UTC)
admin  
#6 Posted : Monday, February 25, 2019 12:16:04 PM(UTC)
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Hi,

Based on the XML shown, using //Field by itself should work just fine or //Field[5 <= position() and position() <= 10]
There will be a column for the attribute no, but you can ignore that and just assign the title fields to the #Text column without issue..

Regards,

Martin
vMix
thanks 1 user thanked admin for this useful post.
Ash on 2/25/2019(UTC)
Ash  
#7 Posted : Monday, February 25, 2019 4:50:59 PM(UTC)
Ash

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Originally Posted by: admin Go to Quoted Post
Hi,

Based on the XML shown, using //Field by itself should work just fine or //Field[5 <= position() and position() <= 10]
There will be a column for the attribute no, but you can ignore that and just assign the title fields to the #Text column without issue..

Regards,

Martin
vMix


Hi Martin

Thanks for the input and your suggestion is exactly what I did.

Regards
Ash

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