XSLT: how to sum a nodeset in a selected node - xslt

I was blocked and hope someone could guide me ~
My XML is:
<PaymentMethodData>
<PaymentMethodDetails PayMethodName="ZHRX_USP_SOE_OPM_NACHA" PayRelShipNo="955160008183756">
<PayMethodName>ZHRX_USP_SOE_OPM_NACHA</PayMethodName>
<PayRelShipNo>955160008183756</PayRelShipNo>
<PaymentPercentage>50</PaymentPercentage>
<RemainingAmountFlag>N</RemainingAmountFlag>
<BankAccountDetails AccountName="PERSON ZHRX_US_CO_01">
<AccountName>PERSON ZHRX_US_CO_01</AccountName>
<AccountNumber>11111111</AccountNumber>
</BankAccountDetails>
</PaymentMethodDetails>
<PaymentMethodDetails PayMethodName="ZHRX_USP_SOE_OPM_NACHA" PayRelShipNo="955160008183756">
<PayMethodName>ZHRX_USP_SOE_OPM_NACHA</PayMethodName>
<PayRelShipNo>955160008183756</PayRelShipNo>
<PaymentPercentage>40</PaymentPercentage>
<RemainingAmountFlag>N</RemainingAmountFlag>
<BankAccountDetails AccountName="PERSON ZHRX_US_CO_01">
<AccountName>PERSON ZHRX_US_CO_01</AccountName>
<AccountNumber>22222222</AccountNumber>
</BankAccountDetails>
</PaymentMethodDetails>
<PaymentMethodDetails PayMethodName="ZHRX_USP_SOE_OPM_NACHA" PayRelShipNo="955160008183756">
<PayMethodName>ZHRX_USP_SOE_OPM_NACHA</PayMethodName>
<PayRelShipNo>955160008183756</PayRelShipNo>
<BankAccountDetails AccountName="PERSON ZHRX_US_CO_01">
<AccountName>PERSON ZHRX_US_CO_01</AccountName>
<AccountNumber>33333333</AccountNumber>
</BankAccountDetails>
</PaymentMethodDetails>
</PaymentMethodData>
The meaning is, the person "955160008183756" has three bank accounts, 50% of his payment will be made into his 1st bank account 11111111; 40% of his payment will be made into his 2nd bank account 22222222; thus the remaining amount will be made into his 3rd back account. The number of banks is dynamic.
I need to write the XSL to calculate the "remaining percentage" for the 3rd bank. I tried below XSL but it returns 100 because "sum(PaymentPercentage)" returned "false".
Pls kindly help, thank you very much!
<Percentage_Bank>
<xsl:choose>
<xsl:when test="RemainingAmountFlag = 'N'" >
<xsl:value-of select="PaymentPercentage" >
</xsl:when>
<xsl:otherwise >
<xsl:value-of select="100-sum(PaymentPercentage)"/>
</xsl:otherwise>
</xsl:choose>
</Percentage_Bank>
Regards,
Paula

I am assuming your XSLT snippet is in a template matching PaymentMethodDetails. If so, doing <xsl:value-of select="100-sum(PaymentPercentage)"/> will be looking for a PaymentPercentage under this the current node, but such a node does not exist. You need to sum up the PaymentPercentage nodes for all the other PaymentMethodDetails records.
To do this, consider defining a key like so....
<xsl:key name="payments" match="PaymentMethodDetails" use="PayRelShipNo" />
Then, to get the remaining percentage you can do this...
<xsl:value-of select="100-sum(key('payments', PayRelShipNo)/PaymentPercentage)"/>
Note I assumed your XML might have more than one account number in.
See an example of it in action at http://xsltfiddle.liberty-development.net/6qM2e2f/1

Related

Looping through an xpath getting the right iteration each time in xslt 2

I have a condition where I need to loop atleast once and so I have the following xsl code. However, this doesnt work as it always gets the last iterations value. How can I tweak this so it gets the right iteration on each loop?
<xsl:variable name='count0'>
<xsl:choose>
<xsl:when test='count($_BoolCheck/BoolCheck[1]/CheckBoolType) = 0'>
<xsl:value-of select="1"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select='count($_BoolCheck/BoolCheck[1]/CheckBoolType)'/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:for-each select="1 to $count0">
<xsl:variable name='_LoopVar_2_0' select='$_BoolCheck/BoolCheck[1]/CheckBoolType[position()=$count0]'/>
<e>
<xsl:attribute name="n">ValueIsTrue</xsl:attribute>
<xsl:attribute name="m">f</xsl:attribute>
<xsl:attribute name="d">f</xsl:attribute>
<xsl:if test="(ctvf:isTrue($_LoopVar_2_0/CheckBoolType[1]))">
<xsl:value-of select=""Value True""/>
</xsl:if>
</e>
</xsl:for-each>
The xml file is as follows:
<BoolCheck>
<CheckBoolType>true</CheckBoolType>
<CheckBoolType>false</CheckBoolType>
<CheckBoolType>1</CheckBoolType>
<CheckBoolType>0</CheckBoolType>
<CheckBoolType>True</CheckBoolType>
<CheckBoolType>False</CheckBoolType>
<CheckBoolType>TRUE</CheckBoolType>
<CheckBoolType>FALSE</CheckBoolType>
</BoolCheck>
In this case I need to iterate through each iteration of CheckBoolType and produce a corresponding number of values. However, in the above example if there were no CheckBoolType iterations I would still like the iterations to enter the for-each loop atleast once. i hope that clarifies it a little more.
First observation: your declaration of $count0 can be replaced by
<xsl:variable name="temp" select="count($_BoolCheck/BoolCheck[1]/CheckBoolType)"/>
<xsl:variable name="count0" select="if ($temp=0) then 1 else $temp"/>
(Sorry if that seems irrelevant, but my first step in debugging code is always to simplify it. It makes the bugs much easier to find).
When you do this you can safely replace the predicate [position()=$count0] by [$count0], because $count0 is now an integer rather than a document node. (Even better, declare it as an integer using as='xs:integer' on the xsl:variable declaration.)
But hang on, $count0 is the number of elements being processed, so CheckBoolType[$count] will always select the last one. That's surely not what you want.
This brings us to another bug in your code. The value of the variable $_LoopVar_2_0 is an element node named CheckBoolType. The expression $_LoopVar_2_0/CheckBoolType[1] is looking for children of this element that are also named CheckBoolType. There are no such children, so the expression selects an empty sequence, so the boolean test is always false.
At this stage I would like to show you some correct code to achieve your desired output. Unfortunately you haven't shown us the desired output. I can't reverse engineer the requirement from (a) your incorrect code, and (b) your prose description of the algorithm you are trying to implement.

convert <xsl:variable> string value , to the value which I can select with <xsl:value-of select>

I have a variable from which I need to dynamically generate nodes
<xsl:template match="banner_discount_1 | banner_discount_2 | banner_discount_3">
<xsl:variable name="link">banner_discount_<xsl:value-of select="substring-after(name(.) ,'banner_discount_')" />_link</xsl:variable>
<xsl:value-of select="$link" />
</xsl:template>
<xsl:value-of> selects the string, but I want to be able to select the node which name matches the name of a variable.
In my case the node looks something like this:
<banner_discount_1_link />
<banner_discount_2_link />
...
Here is the xml I'm using
<banner_discount_1> 12 </banner_discount_1>
<banner_discount_2> 21 </banner_discount_2>
<banner_discount_3> 32 </banner_discount_3>
<banner_discount_1_link> link1 </banner_discount_1_link>
<banner_discount_2_link> link2 </banner_discount_2_link>
<banner_discount_3_link> link3 </banner_discount_3_link>
#MartinHonnen is on the right track, but you need to set the selection context as well.
Since you're in a template that's selecting the banner_discount_ nodes, that is your context. From your XML sample, it looks like the nodes you want to select are siblings, so this should work:
<xsl:value-of select="../*[local-name() = $link]"/>
It is preferable to target the nodes directly, but if they could be anywhere in the document, then you may resort to
<xsl:value-of select="//*[local-name() = $link]"/>
This is a last resort because it is potentially O(n) with respect to the number of nodes in the document.
Use <xsl:value-of select="*[local-name() = $link]"/>. If that does not help then consider to show a sample of the XML.

Creating a variable number of nodes on target document without corresponding data on source document

I'm trying to map two documents witht the BizTalk Mapper and my target document should look like this:
<root>
<complexType>
<property>example</property>
</complexType>
<filler>
<padding>9999999</padding>
</filler>
<filler>
<padding>9999999</padding>
</filler>
<filler>
<padding>9999999</padding>
</filler>
</root>
The number of <filler> nodes that I should create is variable (from 0 to 9). It is basically the result of a calculation (based on some data provided in the source document).
Is there a way to create those <filler> nodes with some combination of functoids?
I tried to use the Table Looping functoid (created a table with only one column, the padding char '9') but doesn't really work because it creates as many <filler> nodes as rows are defined in the table, which is not what I want since the number of rows would have to be variable (again, based on a calculation).
What I currently do is pass the message (XmlDocument) to a C# method and then I programmatically append the <filler> nodes.
I'm hoping that there is a more "BizTalk-y" way of doing this with the Mapper.
I suspect that you will have to solve this problem by altering the XSLT.
Add some logic to create as many filler nodes as the result of your calculation dictates - you could create a template which you call in a loop perhaps, which would append a new filler section.
Hope this points you in the right direction.
As pointed out, XSLT can create nodes on the target document at will (I didn't know this and this was the key part).
Turns out that what I needed is a simple for-loop in XSLT. Once I realized this, a quick Google search yielded the following results:
http://quomon.com/question-How-to-make-a-for-loop-in-xslt-not-for-each-809.aspx
http://snippets.dzone.com/posts/show/930
Another thing worth noting is that (as pointed out by the first link), XSLT is a functional language, not procedural, so sometimes you do have to resort to using recursion or an extension.
This case is definitely one of those times since I couldn't use a careful selection of nodes using the select attribute on an xsl:for-each (since this filler data wasn't part of the source document).
Specifically, for this case, what I did was:
Add a Scripting functoid.
Add two inputs:
A constant with value "1" (this is the initial value of the i variable)
The length of the loop (number of times to repeat the body of the loop)
Paste the following XSLT template as an "Inline XSLT Call Template" script:
<xsl:template name="ForLoop">
<xsl:param name="i" /> <!-- index counter, 1-based, will be incremented with every recursive call -->
<xsl:param name="length" /> <!-- exit loop when i >= length -->
<!-- Output the desired node(s) if we're still looping -->
<!-- The base case is when i > length (in that case, do nothing) -->
<xsl:if test="$i <= $length">
<Filler>
<Padding>999999</Padding>
</Filler>
</xsl:if>
<!-- Call the ForLoop template recursively, incrementing i -->
<xsl:if test="$i <= $length">
<xsl:call-template name="ForLoop">
<xsl:with-param name="i">
<xsl:value-of select="$i + 1"/>
</xsl:with-param>
<xsl:with-param name="length">
<xsl:value-of select="$length"/>
</xsl:with-param>
</xsl:call-template>
</xsl:if>
</xsl:template>

How Can I Reduce "When" Statement in XSLT

Hello I am writing a XSLT statement where I need to implement 1500 conditional statements like -
<xsl:when test="ID = '51'">
<br>
<xsl:text>background: url('rightcolumn_seniorliv.jpg') no-repeat;</xsl:text>
<br>
</xsl:when>
<br>
<xsl:when test="ID = '52'">
<br>
<xsl:text>background: url('rightcolumn_seniorliv.jpg') no-repeat;</xsl:text>
<br>
</xsl:when>
If i write statement like this way then my pages will be very slow. How can i reduce my code and write this statement in a smart way?
<xsl:variable name="idlist">
<ids>
<id>50</id>
<id>59</id>
<id>66</id>
...
</ids>
</xsl:variable>
<xsl:key name="idk" match="id" use="."/>
<xsl:when test="key('idk', ID, $idlist)">...
This is XSLT 2.0 but can be adapted to work with 1.0.
I can't see all your cases, but if the pattern from your first two continues and you want that same 'rightcolumn_seniorliv.jpg' for IDs 51 thru 1551 then
<xsl: when test="ID>'50' and ID<'1552'">
it sounds like these ID cases are going well beyond logic and into the data realm. i obviously dont know anything about your app, but perhaps an ID to imagename mapping somewhere (probably database) would be in order. depending on what process generates the XML file (the first one, before XSLT transformation), you might want to just set the image name (or lack thereof) explicitly thru this mapping. then lose the when all together

XSLT line counter - is it that hard?

I have cheated every time I've needed to do a line count in XSLT by using JScript, but in this case I can't do that. I simply want to write out a line counter throughout an output file. This basic example has a simple solution:
<xsl:for-each select="Records/Record">
<xsl:value-of select="position()"/>
</xsl:for-each>
Output would be:
1
2
3
4
etc...
But what if the structure is more complex with nested foreach's :
<xsl:for-each select="Records/Record">
<xsl:value-of select="position()"/>
<xsl:for-each select="Records/Record">
<xsl:value-of select="position()"/>
</xsl:for-each>
</xsl:for-each>
Here, the inner foreach would just reset the counter (so you get 1, 1, 2, 3, 2, 1, 2, 3, 1, 2 etc). Does anyone know how I can output the position in the file (ie. a line count)?
While it is quite impossible to mark the line numbers for the serialization of an XML document (because this serialization per se is ambiguous), it is perfectly possible, and easy, to number the lines of regular text.
This transformation:
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="text"/>
<xsl:template match="/">
<xsl:call-template name="numberLines"/>
</xsl:template>
<xsl:template name="numberLines">
<xsl:param name="pLastLineNum" select="0"/>
<xsl:param name="pText" select="."/>
<xsl:if test="string-length($pText)">
<xsl:value-of select="concat($pLastLineNum+1, ' ')"/>
<xsl:value-of select="substring-before($pText, '
')"/>
<xsl:text>
</xsl:text>
<xsl:call-template name="numberLines">
<xsl:with-param name="pLastLineNum"
select="$pLastLineNum+1"/>
<xsl:with-param name="pText"
select="substring-after($pText, '
')"/>
</xsl:call-template>
</xsl:if>
</xsl:template>
</xsl:stylesheet>
when applied on this XML document:
<t>The biggest airlines are imposing "peak travel surcharges"
this summer. In other words, they're going to raise fees
without admitting they're raising fees: Hey, it's not a $30
price hike. It's a surcharge! This comes on the heels of
checked-baggage fees, blanket fees, extra fees for window
and aisle seats, and "snack packs" priced at exorbitant
markups. Hotels in Las Vegas and elsewhere, meanwhile, are
imposing "resort fees" for the use of facilities (in other
words, raising room rates without admitting they're
raising room rates). The chiseling dishonesty of these
tactics rankles, and every one feels like another nail in
the coffin of travel as something liberating and
pleasurable.
</t>
produces the desired line-numbering:
1 The biggest airlines are imposing "peak travel surcharges"
2 this summer. In other words, they're going to raise fees
3 without admitting they're raising fees: Hey, it's not a $30
4 price hike. It's a surcharge! This comes on the heels of
5 checked-baggage fees, blanket fees, extra fees for window
6 and aisle seats, and "snack packs" priced at exorbitant
7 markups. Hotels in Las Vegas and elsewhere, meanwhile, are
8 imposing "resort fees" for the use of facilities (in other
9 words, raising room rates without admitting they're
10 raising room rates). The chiseling dishonesty of these
11 tactics rankles, and every one feels like another nail in
12 the coffin of travel as something liberating and
13 pleasurable.
A line in an XML file is not really the same as an element. In your first example you don't really count the lines - but the number of elements.
An XML file could look like this:
<cheeseCollection>
<cheese country="Cyprus">Gbejna</cheese><cheese>Liptauer</cheese><cheese>Anari</cheese>
</cheeseCollection>
Or the exact same XML file can look like this:
<cheeseCollection>
<cheese
country="Cyprus">Gbejna</cheese>
<cheese>Liptauer</cheese>
<cheese>Anari</cheese>
</cheeseCollection>
which the XSLT will interpet exactly the same - it will not really bother with the line breaks.
Therefore it's hard to show line numbers in the way you want using XSLT - it's not really meant for for that kind of parsing.
Someone correct me if I'm wrong, but I'd say you would need Javascript or some other scripting language to do what you want.
Thanks for the responses guys - yup you're totally correct, some external function is the only way to get this behaviour in XSLT. For those searching, this is how I did this when using a compiled transform in .Net 3.5:
Create a helper class for your function(s)
/// <summary>
/// Provides functional support to XSLT
/// </summary>
public class XslHelper
{
/// <summary>
/// Initialise the line counter value to 1
/// </summary>
Int32 counter = 1;
/// <summary>
/// Increment and return the line count
/// </summary>
/// <returns></returns>
public Int32 IncrementCount()
{
return counter++;
}
}
Add an instance to an args list for XSLT
XslCompiledTransform xslt = new XslCompiledTransform();
xslt.Load(XmlReader.Create(s));
XsltArgumentList xslArg = new XsltArgumentList();
XslHelper helper = new XslHelper();
xslArg.AddExtensionObject("urn:helper", helper);
xslt.Transform(xd.CreateReader(), xslArg, writer);
Use it in you XSLT
Put this in the stylesheet declaration element:
xmlns:helper="urn:helper"
Then use like so:
<xsl:value-of select="helper:IncrementCount()" />
Generally, position() is referring to the number of the current node relative to the entire batch of nodes that is being processed currently.
With your "nested for-each" example, consecutive numbering can easily be achieved when you stop nesting for-each constructs and just select all desired elements at once.
With this XML:
<a><b><c/><c/></b><b><c/></b></a>
a loop construct like this
<xsl:for-each "a/b">
<xsl:value-of select="position()" />
<xsl:for-each "c">
<xsl:value-of select="position()" />
</xsl:for-each>
</xsl:for-each>
will result in
11221
bccbc // referred-to nodes
but you could simply do this instead:
<xsl:for-each "a/b/c">
<xsl:value-of select="position()" />
</xsl:for-each>
and you would get
123
ccc // referred-to nodes