I have a number for example 123, this is stored in an element let's say
<Number>123</Number>. I am looking for a solution written in XSLT 1.0 which can do something like: 1*2*3 and provide me the result as 6. The value in Number element can be in any length. I know i can do this through substring function and by storing the values one by one in variables but the problem is, i dont know the length of this field.
I could not write any xslt for this.
Can anyone help or suggest a solution for this?
You can do this by calling a recursive named template:
<xsl:template name="digit-product">
<xsl:param name="digits"/>
<xsl:param name="prev-product" select="1"/>
<xsl:variable name="product" select="$prev-product * substring($digits, 1, 1)" />
<xsl:choose>
<xsl:when test="string-length($digits) > 1">
<!-- recursive call -->
<xsl:call-template name="digit-product">
<xsl:with-param name="digits" select="substring($digits, 2)"/>
<xsl:with-param name="prev-product" select="$product"/>
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$product"/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
Working example: http://xsltransform.net/3NJ38YJ
Note that this assumes the value of the passed digits parameter is an integer.
Related
Background info. I'm writing an XSL file to take an XML sent to the server by an analytical instrument and translate that file into an XML file accepted by our LIMS system.
Here is a Simple XML file coming from the instrument:
<dataRoot>
<dataRow>
<a0>2020-05-29 10:48:09 UTC-4</a0>
<a1>MSA - Conc.(Bench)</a1>
<a2>WHC202005270038</a2>
<a3>00251832</a3>
<a4>1.15966</a4>
<a5>MSA</a5>
<a6>101.067</a6>
</dataRow>
</dataRoot>
Here is what I have so far for the XSL File:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0"/>
<xsl:template match="/dataRoot">
<INBOUND>
<xsl:call-template name="A"/>
<xsl:copy-of select="A" />
</INBOUND>
</xsl:template>
<xsl:template match="/dataRow" name="A">
<xsl:for-each select="dataRow">
<xsl:variable name="sSampleID" select="normalize-space(a2)" />
<xsl:variable name="sSubmitter">AutoT_EQ00004</xsl:variable>
<xsl:variable name="sEnteredBy">EQ00004</xsl:variable>
<!-- Use a variable for OWNER, so that only one spot needs changing if a different value is desired -->
<xsl:variable name="sOwner">WHC</xsl:variable>
<xsl:variable name="sParameter" select="normalize-space(a5)" />
<xsl:variable name="sParamName"> <!-- Parameter names mapping for import to LIMS-->
<xsl:call-template name="ConvertPaName">
<xsl:with-param name="sPaName" select="$sParameter" />
</xsl:call-template>
</xsl:variable>
<xsl:variable name="sResult" select="normalize-space(a6)" />
<xsl:for-each select="$sParamName">
<INBOX_SAMPLE>
<EVENT>1</EVENT>
<SAMPLE_ID><xsl:value-of select="$sSampleID"/></SAMPLE_ID>
<SUBMITTER><xsl:value-of select="$sSubmitter" /></SUBMITTER>
<ENTERED_BY><xsl:value-of select="$sEnteredBy" /></ENTERED_BY>
<OWNER><xsl:value-of select="$sOwner" /></OWNER>
<PARAMETER_NAME><xsl:value-of select="$sParamName"/></PARAMETER_NAME>
<SRESULT><xsl:value-of select="$sResult"/></SRESULT>
</INBOX_SAMPLE>
</xsl:for-each>
</xsl:for-each>
</xsl:template>
<!-- Convert PaNames as needed, and skip processing certain values that are not actual Parameters (ie: 'Application') -->
<xsl:template name="ConvertPaName">
<xsl:param name="sPaName" />
<xsl:choose>
<xsl:when test="$sPaName='MSA'">MSA - Conc.(Bench)</xsl:when>
<xsl:when test="$sPaName='MSA'">Free MSA</xsl:when>
<xsl:otherwise>Halt_Import</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
Here is the output of current translation:
<INBOUND>
<INBOX_SAMPLE>
<EVENT>1</EVENT>
<SAMPLE_ID>WHC202005270038</SAMPLE_ID>
<SUBMITTER>AutoT_EQ00004</SUBMITTER>
<ENTERED_BY>EQ00004</ENTERED_BY>
<OWNER>WHC</OWNER>
<PARAMETER_NAME>MSA - Conc.(Bench)</PARAMETER_NAME>
<SRESULT>101.067</SRESULT>
</INBOX_SAMPLE>
</INBOUND>
What I need to do is to duplicate this node for both parameter names:
<xsl:when test="$sPaName='MSA'">MSA - Conc.(Bench)</xsl:when>
<xsl:when test="$sPaName='MSA'">Free MSA</xsl:when>
So that my output becomes:
<INBOUND>
<INBOX_SAMPLE>
<EVENT>1</EVENT>
<SAMPLE_ID>WHC202005270038</SAMPLE_ID>
<SUBMITTER>AutoT_EQ00004</SUBMITTER>
<ENTERED_BY>EQ00004</ENTERED_BY>
<OWNER>WHC</OWNER>
<PARAMETER_NAME>MSA - Conc.(Bench)</PARAMETER_NAME>
<SRESULT>101.067</SRESULT>
</INBOX_SAMPLE>
<INBOX_SAMPLE>
<EVENT>1</EVENT>
<SAMPLE_ID>WHC202005270038</SAMPLE_ID>
<SUBMITTER>AutoT_EQ00004</SUBMITTER>
<ENTERED_BY>EQ00004</ENTERED_BY>
<OWNER>WHC</OWNER>
<PARAMETER_NAME>Free MSA</PARAMETER_NAME>
<SRESULT>101.067</SRESULT>
</INBOX_SAMPLE>
</INBOUND>
This is because instrument sends one parameter name like "MSA" but in our LIMS we have it under either "Free MSA" or "MSA - Conc.(Bench)" and I need to be able to provide the result for both possible parameter names and LIMS will insert the one that it find a match for.
Thank you so much in advanced :)
Add parm elements to template.
<xsl:template name="ConvertPaName">
<xsl:param name="sPaName" />
<xsl:choose>
<xsl:when test="$sPaName='MSA'">
<parm>MSA - Conc.(Bench)</parm>
<parm>Free MSA</parm>
</xsl:when>
<xsl:otherwise>
<parm>Halt_Import</parm>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
Call your template
<xsl:variable name="sParamName">
<xsl:call-template name="ConvertPaName">
<xsl:with-param name="sPaName" select="$sParameter" />
</xsl:call-template>
</xsl:variable>
Convert to node set: (However you do it. You currently don't have the msxml namespace set up.)
<xsl:variable name="sParamNameList" select="msxml:node-set($sParamName)">
Then use the parm list in your for-each loop.
<xsl:for-each select="$sParamNameList/parm">
I am in need to create a element five times in xslt 1.0
so that output would be
<element1></element1>
<element1></element1>
<element1></element1>
<element1></element1>
<element1></element1>
Is there any loop like for(int i=1;i<=5;i++) in xslt. Many pages suggest array but in xslt 2.0
If you have a variable but not-too-large number, you can use simple recursion
<xsl:template name="doelements">
<xsl:param name="howmany" select="0"/>
<xsl:if test="$howmany > 0">
<element1/>
<xsl:call-template name="doelements">
<xsl:with-param name="howmany">
<xsl:value-of select="$howmany - 1"/>
</xsl:with-param>
</xsl:call-template>
</xsl:if>
</xsl:template>
so where you want 5 of them you would call
<xsl:call-template name="doelements">
<xsl:with-param name="howmany">
<xsl:value-of select="5"/>
</xsl:with-param>
</xsl:call-template>
(didn't check, might be off-by-one, left as an excercise to the reader ;-)
I need to replace values of multiple elements of an input xml. The input file has around 300 elements of which I need to replace around 100 elements. I have used identity template before, but I think it would require me to write 100 different templates each for replacing a single element value. I am not very good at xslts, so, am I thinking it right, or is there a better an elegant approach? Please advice.
Edit
Here is the Link of sample input xml.
The output will have almost the same structure, but different values for some of the elements.
Well, something I did similar before before so I am happy to share ... modified to your example BUT does not do the value mapping, it does name mapping.
First create a simple mapping file like this (NOTE: you would need the namespaces to do this right
<env:map xmlns:env="http://www.w3.org/2003/05/soap-envelope">
<elem old="CardCode" new="CodeCardNEW"/>
<elem old="CardName" new="IAMNew"/>
</env:map>
Then one template will do you with a lookup. There are likely better ways to do the mapping, I am just for-each looping over them all ... a key would be better. But this gets you there.
Output from your file with above:
<env:Envelope xmlns:env="http://www.w3.org/2003/05/soap-envelope">
<env:Body>
<GetByKeyResponse>
<BOM>
<BO>
<AdmInfo>
<Object>oBusinessPartners</Object>
</AdmInfo>
<BusinessPartners>
<row>
<CodeCardNEW>CR43WEB</CodeCardNEW>
<IAMNew>Zack Burns</IAMNew>
<CardType>cCustomer</CardType>
...
And here's the XSL:
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:env="http://www.w3.org/2003/05/soap-envelope"
version="1.0">
<xsl:param name="map" select="document('map.xml')/env:map"></xsl:param>
<xsl:template match="text()" priority="1">
<xsl:value-of select="."/>
</xsl:template>
<xsl:template match="#*|node()">
<xsl:variable name="newname">
<xsl:call-template name="namesub">
<xsl:with-param name="name" select="name()"/>
</xsl:call-template>
</xsl:variable>
<xsl:element name="{$newname}">
<xsl:apply-templates select="#*|node()"/>
</xsl:element>
</xsl:template>
<xsl:template name="namesub">
<xsl:param name="name"/>
<xsl:variable name="newname">
<xsl:for-each select="$map/elem">
<xsl:choose>
<xsl:when test="#old = $name">
<xsl:value-of select="#new"/>
</xsl:when>
</xsl:choose>
</xsl:for-each>
</xsl:variable>
<xsl:choose>
<xsl:when test="string-length($newname) > 0">
<xsl:value-of select="$newname"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$name"/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
You should be able to adapt this as long as you have a match on name ... if the name is the same in different hierarchies of the XML, you would need more work.
<xsl:for-each select="$script/startWith">
<xsl:variable name = "i" >
<xsl:value-of select="$script/startWith[position()]"/>
</xsl:variable>
<xsl:for-each select="JeuxDeMots/Element">
<xsl:variable name = "A" >
<xsl:value-of select="eName"/>
</xsl:variable>
<xsl:if test="starts-with($A,$i)= true()">
<xsl:variable name="stringReplace">
<xsl:value-of select="substring($i,0,3)"/>
</xsl:variable>
<xsl:value-of select="$stringReplace"/>
</xsl:if>
</xsl:for-each>
</xsl:for-each>
Problem : variable $i, can not pass in an xsl for-each.
Please help me.
Try replacing the declaration of i with
<xsl:variable name="i" select="string(.)"/>
The context item (i.e. ".") is different for each evaluation of the for-each instruction, but the value of the expression $script/startWith[position()] does not change. (Here, you are making a sequence of startWith elements, and testing each one for the effective boolean value of the expression position(). The expression position() returns a positive integer, so its effective boolean value is always true. So the predicate [position()] is doing no work at all here.
Also, you'll want to replace the declaration of stringReplace with
<xsl:variable name="stringReplace" select="substring($i,1,3)"/>
(String offsets begin with 1 in XPath, not with 0.)
I am guessing that you want to process all of the startWith children of $script, and for each one emit the first three characters of the startWith value once, for each startWith/JeuxDeMots/Element whose eName child begins with the value of startWith.
Actually, the whole thing might be a little easier to read if it were briefer and more direct:
<xsl:for-each select="$script/startWith">
<xsl:variable name = "i" select="string()"/>
<xsl:for-each select="JeuxDeMots/Element">
<xsl:if test="starts-with(eName,$i)">
<xsl:value-of select="substring($i,1,3)"/>
</xsl:if>
</xsl:for-each>
</xsl:for-each>
It makes perfect sense to create the variables $A and $stringReplace if they are used several times in code you're not showing us, but if not, ...
I think the problem is that you change context in first for-each. Then the element JeuxDeMots is not "visible" for second for-each. You can for example try to store it in variable and use this variable in second for-each (there are also another ways how to figure out this problem).
<xsl:template match="/">
<xsl:variable name="doc" select="JeuxDeMots"/>
<xsl:choose>
<xsl:when test="$script/startWith">
<xsl:for-each select="$script/startWith">
<xsl:variable name="i">
<xsl:value-of select="."/>
</xsl:variable>
<xsl:for-each select="$doc/Element">
<xsl:variable name="A">
<xsl:value-of select="eName"/>
</xsl:variable>
<xsl:if test="starts-with($A,$i) = true()">
<xsl:variable name="stringReplace">
<xsl:value-of select="substring($i,0,3)"/>
</xsl:variable>
<xsl:value-of select="$stringReplace"/>
</xsl:if>
</xsl:for-each>
</xsl:for-each>
</xsl:when>
</xsl:choose>
</xsl:template>
Although I'm not sure what exactly you are dealing with it seems to output desired value AsAt.
You could also consider C.M.Sperberg-McQueen post about string offset in XPath.
I would like to create a variable that contains a text value that is a number of space characters but the number of characters is not known until runtime. This needs to be done a great many times so i would like to use something that will perform very well.
One option is substring() function on a previously declared node, but this limits the length to no more than that of the original text.
Another would be to use a recursive template with concat() function, but not sure about the performance implications.
What is a way to do this that will perform very well?
I would create a global variable of length say 4000 spaces. Then if the desired string is less than 4000 spaces, use substring(); if greater, use a recursive approach as outlined by Durkin. In 2.0 of course the code is much simpler to write but choosing an approach that performs well is still an interesting little problem.
You can use recursion and divide and conquer. This will give you run-time cost of order (log N). Alternatively, if your XSLT processor implements tail-end recursion optimisation, then you can use a tail-end recursion solution for better safety at scale. Here are the two solutions...
For non tail-end recursion optimising XSLT processors...
<xsl:template name="spaces">
<xsl:param name="count" />
<xsl:choose>
<xsl:when test="$count <= 10">
<xsl:value-of select="substring(' ',1,$count)" />
</xsl:when>
<xsl:otherwise>
<xsl:call-template name="spaces">
<xsl:with-param name="count" select="$count idiv 2" />
</xsl:call-template>
<xsl:call-template name="spaces">
<xsl:with-param name="count" select="$count - ($count idiv 2)" />
</xsl:call-template>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
For tail-end recursion optimising XSLT processors...
<xsl:template name="spaces">
<xsl:param name="count" />
<xsl:choose>
<xsl:when test="$count <= 10">
<xsl:value-of select="substring(' ',1,$count)" />
</xsl:when>
<xsl:otherwise>
<xsl:text> </xsl:text>
<xsl:call-template name="spaces">
<xsl:with-param name="count" select="$count - 10" />
</xsl:call-template>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
For an efficient (both time and space) XSLT 1.0 solution, see this:
http://www.sourceware.org/ml/xsl-list/2001-07/msg01040.html