thanks for taking the time!
I am trying to get the position of a node based on its value, so that I can then get corresponding entries. Please let me show you with an example, it will be easier to explain.
Here is the source XML:
<?xml version="1.0" encoding="UTF-8"?>
<sampleSourceXML>
<Table>
<Header>
<Column>Name</Column>
<Column>Surname</Column>
<Column>Title</Column>
</Header>
<Body>
<Row>
<Entry>James</Entry>
<Entry>Bond</Entry>
<Entry>Mr</Entry>
</Row>
<Row>
<Entry>Harry</Entry>
<Entry>Potter</Entry>
<Entry>Mr</Entry>
</Row>
</Body>
</Table>
</sampleSourceXML>
This is the resulting XML that I would like to achieve:
<?xml version="1.0" encoding="UTF-8"?>
<sampleResultXML>
<Person>
<FirstName>James</FirstName>
<LastName>Bond</LastName>
<Title>Mr</Title>
</Person>
<Person>
<FirstName>Harry</FirstName>
<LastName>Potter</LastName>
<Title>Mr</Title>
</Person>
</sampleResultXML>
I tried it with this XSLT:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:template match="/">
<xsl:element name="sampleResultXML">
<xsl:for-each select="sampleSourceXML/Table/Rows/Row">
<xsl:element name="Person">
<xsl:element name="FirstName">
<xsl:value-of select="./Entry[1]/text()"></xsl:value-of>
</xsl:element>
<xsl:element name="LastName">
<xsl:value-of select="./Entry[2]/text()"></xsl:value-of>
</xsl:element>
<xsl:element name="Title">
<xsl:value-of select="./Entry[3]/text()"></xsl:value-of>
</xsl:element>
</xsl:element>
</xsl:for-each>
</xsl:element>
</xsl:template>
</xsl:stylesheet>
This works.
But! The source XML can have a different order. For example the Title element can be above the Name element. So the hardcoded position in my XSLT (e.g. Entry[3]) will not work any more.
The header order and the entry order are always corresponding. So if the Column Title is in position 3, so will be the corresponding row.
So I need a way to get the position of, let's say, the Title element dynamically. So I have to go through the Column elements until I reach the one with value "Title". This position I thought I'd save in a variable (e.g. Position_Title) so that I can fill the value later like so:
<xsl:element name="Title">
<xsl:value-of select="./Entry[$Position_Title]/text()"></xsl:value-of>
</xsl:element>
However I haven't been able to find a way to do this...
Do you have any ideas how I can achieve this?
Thanks!
Nick
EDIT: Thanks to Michael for the help! Here is the final XSLT I'm using:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="utf-8" indent="yes"/>
<xsl:template match="/sampleSourceXML">
<xsl:variable name="cols" select="Table/Header/Column"/>
<sampleResultXML>
<xsl:for-each select="Table/Body/Row">
<Person>
<xsl:for-each select="Entry">
<xsl:variable name="i" select="position()"/>
<xsl:variable name="elementName">
<xsl:choose>
<xsl:when test="$cols[$i]='Name'">
<xsl:value-of select="'FirstName'"/>
</xsl:when>
<xsl:when test="$cols[$i]='Surname'">
<xsl:value-of select="'LastName'"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$cols[$i]"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:element name="{$elementName}">
<xsl:value-of select="."/>
</xsl:element>
</xsl:for-each>
</Person>
</xsl:for-each>
</sampleResultXML>
</xsl:template>
</xsl:stylesheet>
So I need a way to get the position of, let's say, the Title element dynamically. So I have to go through the Column elements until I reach the one with value "Title". This position I thought I'd save in a variable (e.g. Position_Title) so that I can fill the value later like so:
I think it could be much simpler if you do it from the opposite direction. Try:
XSLT 1.0
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="utf-8" indent="yes"/>
<xsl:template match="/sampleSourceXML">
<xsl:variable name="cols" select="Table/Header/Column" />
<sampleResultXML>
<xsl:for-each select="Table/Body/Row">
<Person>
<xsl:for-each select="Entry">
<xsl:variable name="i" select="position()" />
<xsl:element name="{$cols[$i]}">
<xsl:value-of select="."/>
</xsl:element>
</xsl:for-each>
</Person>
</xsl:for-each>
</sampleResultXML>
</xsl:template>
</xsl:stylesheet>
Related
I need to list all the INST names but only if the "onlyTesters" node don´t exists in the "inst/idef" part of XML body above.
I know thats strange but I can´t change the XML I receive.
XML:
<river>
<station num="699">
<inst name="FLU(m)" num="1">
<idef></idef>
</inst>
<inst name="Battery(V)" num="18">
<idef>
<onlyTesters/>
</idef>
</inst>
</station>
<INST name="PLU(mm)" num="0" hasData="1" virtual="0"/>
<INST name="FLU(m)" num="1" hasData="1" virtual="0"/>
<INST name="Q(m3/s)" num="3" hasData="1" virtual="1"/>
<INST name="Battery(V)" num="18" hasData="1" virtual="0"/>
</river>
XSL:
<xsl:template match="/">
<xsl:apply-templates select="//INST[#hasData = 1 and not(//inst[#num=(current()/#num)]/idef/onlyTesters)]/#name"/>
</xsl:template>
<xsl:template match="//INST[#hasData = 1 and not(//inst[#num=(current()/#num)]/idef/onlyTesters)]/#name">
<xsl:value-of select="#name"/>,
</xsl:template>
I´m having no match.
This is the result I expect:
PLU(mm),FLU(m),Q(m3/s)
You can achieve this with only one template:
<xsl:template match="/">
<xsl:for-each select="//INST[#hasData='1' and not(#name=//inst[idef/onlyTesters]/#name)]">
<xsl:value-of select="#name"/>
<xsl:if test="position() != last()">, </xsl:if>
</xsl:for-each>
</xsl:template>
Output is:
PLU(mm), FLU(m), Q(m3/s)
Cross-references are best resolved using a key - for example:
XSLT 1.0
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="text" encoding="UTF-8" />
<xsl:key name="inst" match="inst" use="#name" />
<xsl:template match="/river">
<xsl:for-each select="INST[#hasData = 1 and not(key('inst', #name)/idef/onlyTesters)]">
<xsl:value-of select="#name"/>
<xsl:if test="position() != last()">,</xsl:if>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
Or even simpler:
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="text" encoding="UTF-8" />
<xsl:key name="exclude" match="onlyTesters" use="ancestor::inst/#name" />
<xsl:template match="/river">
<xsl:for-each select="INST[#hasData = 1 and not(key('exclude', #name))]">
<xsl:value-of select="#name"/>
<xsl:if test="position() != last()">, </xsl:if>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
I am learning XSLT and trying to transform below xml. But couldn't achieve the task
<sample id="7">
<land1 id="8">
<owner>TOMMY</owner>
<type>INDIVIDUAL</type>
<hint>TOM_INDIVIDUAL</hint>
<date>12.02.2014</date>
<text>land details</text>
<number>1</number>
<cost>WIDERRUFLICH</cost>
</land1>
</sample>
and trying to convert above into
<table name="sample">
<tablename="land1">
<rel name="owner" value="TOMMY"/>
<rel name="type" value="INDIVIDUAL"/>
<rel name="<hint" value="TOM_INDIVIDUAL"/>
<rel name="date" value="12.02.2014"/>
<rel name="details" value="land details"/>
<rel name="number" value="1"/>
<rel name="cost" value="25%"/>
</table>
</table>
I tried below to generate the same, but it's not working.
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:template match="/">
<xsl:for-each select="*">
<xsl:if test="current().count(*)>0">
<xsl:element name="table">
<xsl:attribute name="name">
<xsl:value-of select="name(.)"/>
</xsl:attribute>
<xsl:apply-templates select="/"
</xsl:element>
</xsl:if>
<xsl:if test="current().count(*)=0">
<xsl:element name="rel">
<xsl:attribute name="name">
<xsl:value-of select="name(.)"/>
</xsl:attribute>
<xsl:attribute name="value">
<xsl:value-of select="current()"/>
</xsl:attribute>
</xsl:element>
</xsl:if>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
Can someone please let me know where I am doing wrong?
Can someone please let me know where I am doing wrong?
Well, for one thing, current().count(*)>0 is not a valid expression.
And you have <xsl:apply-templates select="/" without closing the tag. Which may be a good thing - because if it worked, it would have created an infinite loop.
I also don't understand the overall logic of your approach. Couldn't you do simply:
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:template match="*[*]">
<table name="{name()}">
<xsl:apply-templates/>
</table>
</xsl:template>
<xsl:template match="*">
<rel name="{name()}" value="{.}"/>
</xsl:template>
</xsl:stylesheet>
Added:
every element with an attribute should also be a table. For example,
in the above xml, <land1 id="8"> has children and your logic works
fine. But my inout can also contain <land1 id="8"/>. Now even though
it doesn't have any child elements, still element name has to be
considered as Table
Then use:
<xsl:template match="*[#*]">
instead of:
<xsl:template match="*[*]">
With in an xslt 1.0. I am calling a java function getTierByBundleId which returns below xml. I want to iterate through each Tier using for each. How can i do that
<xsl:variable name="varTierList" select="testclass:getTierByBundleId($bid,$ApplicationId)"/>
Xml returned by function getTierByBundleId
<TierList>
<Tier>
<TierId>1</TierId>
<Name>test</Name>
<Type>2</Type>
<Price>10</Price>
</Tier>
<Tier>
<TierId>2</TierId>
<Name>test</Name>
<Type>3</Type>
<Price>11</Price>
</Tier>
</TierList>
Here when I am trying to do xsl:for each on the variable which has the xml I am getting compilation error. How can I access each Tier from variable $varTierList
<xsl:for-each select="$varTierList/TierList/Tier">
<TierId><xsl:for each"Tierid"/>
</xsl:for-each
Below is the xslt which is generation the above TierList xml
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:foxtelclass="test.GetOrderQuote" exclude-result-prefixes="foxtelclass" extension-element-prefixes="testclass">
<xsl:output method="xml" omit-xml-declaration="yes" indent="yes"/>
<xsl:template match="/">
<xsl:if test="count(/ROWSET/ROW) > 0">
<TierList>
<xsl:for-each select="/ROWSET/ROW">
<Tier>
<TierId><xsl:value-of select="TIER_ID" /></TierId>
<Name><xsl:value-of select="NAME" /></Name>
<Type><xsl:value-of select="TIER_TYPE" /></Type>
<Price><xsl:value-of select="PRICE" /></Price>
</Tier>
</xsl:for-each>
</TierList>
</xsl:if>
</xsl:template>
</xsl:stylesheet>
<xsl:for-each select="$varTierList/TierList/Tier"> is throwing the error message
Here is the full xslt
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:testclass="test.GetOrderQuote"
xmlns:ext="http://exslt.org/common" exclude-result-prefixes="testclass" extension-
element-prefixes="testclass">
<xsl:output method="xml" omit-xml-declaration="yes"/>
<xsl:param name="ApplicationId"/>
<xsl:template match="/">
<ServiceList>
<xsl:variable name="unique-list" select="//ROWSET/ROW/SERVICE_ID
[not(.=following::SERVICE_ID)]"/>
<xsl:for-each select="$unique-list">
<xsl:if test=".!=0">
<Service>
<xsl:variable name="Sid" select="."/>
<ServiceInternalId>
<xsl:value-of select="."/>
</ServiceInternalId>
<BundleList>
<xsl:variable name="unique-
bundle" select="//SERVICE_ID/../BUNDLE_ID[not(.=following::BUNDLE_ID)]"/>
<xsl:for-each
select="$unique-bundle">
<xsl:variable
name="bid" select="."/>
<xsl:if
test="count(/ROWSET/ROW/SERVICE_ID[text()=$Sid]/../BUNDLE_ID[text()=$bid])> 0">
<Bundle>
<Bundle_Id>
<xsl:value-of select="$bid"/>
</Bundle_Id>
<Type>
<xsl:value-of select="../BUNDLE_TYPE"/>
</Type>
<Name>
<xsl:value-of select="../BUNDLE_NAME"/>
</Name>
<Price>
<xsl:value-of select="../BUNDLE_PRICE"/>
</Price>
<xsl:variable name="varTierList" select="testclass:getTierByBundleId
($bid,$ApplicationId)"/>
<test>
<xsl:value-of select="$varTierList"/>
</test>
<xsl:for-each select="$varTierList/TierList/Tier"><!--line causing error-->
<TierId>
<xsl:value-of select="TierId"/>
</TierId>
</xsl:for-each>
</Bundle>
</xsl:if>
</xsl:for-each>
</BundleList>
</Service>
</xsl:if>
</xsl:for-each>
</ServiceList>
</xsl:template>
</xsl:stylesheet>
Below is the text from test node which what is xml variable varTierList contains
<test><TierList>
<Tier>
<TierId>109</TierId>
<Name>Boxes</Name>
<Type>10</Type>
<Price>10</Price>
</Tier>
</TierList>
</test>
Please find below input xml
<ROWSET>
<ROW>
<SET_ID>0</SET_ID>
<SET_DATE>2014-11-09 00:00:00.0</SET_DATE>
<BUNDLE_NAME>Test</BUNDLE_NAME>
<BUNDLE_ID>131</BUNDLE_ID>
<BUNDLE_PRICE>30</BUNDLE_PRICE>
<BUNDLE_TYPE>3</BUNDLE_TYPE>
<BUNDLECOMPONENT_LIST>101100</BUNDLECOMPONENT_LIST>
<PACKAGE>10015</PACKAGE>
<PACKAGE_TYPE>5</PACKAGE_TYPE>
<COMPONENT>101100</COMPONENT>
<PRODUCT_DESC>World Movies</PRODUCT_DESC>
<RATE_AMOUNT>10</RATE_AMOUNT>
<DISCOUNT_AMOUNT>0</DISCOUNT_AMOUNT>
<SERVICE_ID>98683812</SERVICE_ID>
<CHARGE_TYPE>RC</CHARGE_TYPE>
<GUID_TOKEN>053944D794856E3FE0540010E00D30B8</GUID_TOKEN>
<NRC_LINE_ID>0</NRC_LINE_ID>
<TIERID>11</TIERID>
</ROW>
<ROW>
<SET_ID>0</SET_ID>
<SET_DATE>2014-11-09 00:00:00.0</SET_DATE>
<BUNDLE_NAME>Optional test</BUNDLE_NAME>
<BUNDLE_ID>131</BUNDLE_ID>
<BUNDLE_PRICE>30</BUNDLE_PRICE>
<BUNDLE_TYPE>3</BUNDLE_TYPE>
<BUNDLECOMPONENT_LIST>101100</BUNDLECOMPONENT_LIST>
<PACKAGE>10015</PACKAGE>
<PACKAGE_TYPE>5</PACKAGE_TYPE>
<COMPONENT>101103</COMPONENT>
<PRODUCT_DESC>RAI International</PRODUCT_DESC>
<RATE_AMOUNT>20</RATE_AMOUNT>
<DISCOUNT_AMOUNT>0</DISCOUNT_AMOUNT>
<SERVICE_ID>98683812</SERVICE_ID>
<CHARGE_TYPE>RC</CHARGE_TYPE>
<GUID_TOKEN>053944D794856E3FE0540010E00D30B8</GUID_TOKEN>
<NRC_LINE_ID>0</NRC_LINE_ID>
<TIERID>14</TIERID>
</ROW>
</ROWSET>
Hope this helps,
this is full xslt that doesn't shows any compilation error at my end
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:testclass="test.GetOrderQuote" xmlns:ext="http://exslt.org/common" exclude-result-prefixes="testclass">
<xsl:output method="xml" omit-xml-declaration="yes"/>
<xsl:param name="ApplicationId"/>
<xsl:template match="/">
<ServiceList>
<xsl:variable name="unique-list" select="//ROWSET/ROW/SERVICE_ID[not(.=following::SERVICE_ID)]"/>
<xsl:for-each select="$unique-list">
<xsl:if test=".!=0">
<Service>
<xsl:variable name="Sid" select="."/>
<ServiceInternalId>
<xsl:value-of select="."/>
</ServiceInternalId>
<BundleList>
<xsl:variable name="unique-bundle" select="//SERVICE_ID/../BUNDLE_ID[not(.=following::BUNDLE_ID)]"/>
<xsl:for-each select="$unique-bundle">
<xsl:variable name="bid" select="."/>
<xsl:if test="count(/ROWSET/ROW/SERVICE_ID[text()=$Sid]/../BUNDLE_ID[text()=$bid])> 0">
<Bundle>
<Bundle_Id>
<xsl:value-of select="$bid"/>
</Bundle_Id>
<Type>
<xsl:value-of select="../BUNDLE_TYPE"/>
</Type>
<Name>
<xsl:value-of select="../BUNDLE_NAME"/>
</Name>
<Price>
<xsl:value-of select="../BUNDLE_PRICE"/>
</Price>
<xsl:variable name="varTierList" select="testclass:getTierByBundleId($bid,$ApplicationId)"/>
<test>
<xsl:value-of select="$varTierList"/>
</test>
<xsl:for-each select="$varTierList/TierList/Tier">
<TierId>
<xsl:value-of select="TierId"/>
</TierId>
</xsl:for-each>
</Bundle>
</xsl:if>
</xsl:for-each>
</BundleList>
</Service>
</xsl:if>
</xsl:for-each>
</ServiceList>
</xsl:template>
</xsl:stylesheet>
I am sick of write all the call-template/with-param stuff.
Is there any shortcut for this in example:
<xsl:call-template name="complexwidget">
<xsl:with-param name="a" select="$bla_213"/>
<xsl:with-param name="b" select="$bla_213"/>
<xsl:with-param name="c" select="$bla_213"/>
<xsl:with-param name="d" select="$bla_213"/>
</xsl:call-template>
A Perfect posibility would be this:
<complex a="{$bla_213}" b="{$bla_213}" c="{$bla_213}" d="{$bla_213}" />
Any idea, maybe a twice-transform-xslt??
If you could switch to xslt 2.0 then user functions would be exactly what you need.
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:fn="http://www.w3.org/2005/xpath-functions" xmlns:my="my-namespace">
<xsl:output method="text" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:template match="/">
<xsl:value-of select="my:complexWidget(1, 2, 3, 4)" />
</xsl:template>
<xsl:function name="my:complexWidget">
<xsl:param name="a" />
<xsl:param name="b" />
<xsl:param name="c" />
<xsl:param name="d" />
<!-- Do something -->
<xsl:value-of select="($a, $b,$c, $d)" separator="-" />
</xsl:function>
</xsl:stylesheet>
In xslt 1.0 I think that preprocessing of xslt stylesheet with another transformation will be the only way (or may be writing some extension functions in language of your processor .
EDIT:
I tried the "preprocess" of xslt and it seems to be working (but probably it is no the most elegant way how to do it).
Input xslt
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:mypp="my-preprocess-namespace">
<xsl:output method="text" />
<xsl:template match="/">
<xsl:variable name="varA" select="1"/>
<xsl:variable name="varB" select="2"/>
<xsl:variable name="varC" select="3"/>
<xsl:variable name="varD" select="4"/>
<mypp:complexWidget a="$varA" b="$varB" c="$varC" d="$varD"/>
</xsl:template>
<xsl:template name="complexWidget">
<xsl:param name="a"/>
<xsl:param name="b"/>
<xsl:param name="c"/>
<xsl:param name="d"/>
<!-- do something-->
<xsl:value-of select="$a"/>
<xsl:text>-</xsl:text>
<xsl:value-of select="$b"/>
<xsl:text>-</xsl:text>
<xsl:value-of select="$c"/>
<xsl:text>-</xsl:text>
<xsl:value-of select="$d"/>
</xsl:template>
</xsl:stylesheet>
I defined here a special namespace for element to be replaced (i.e. xmlns:mypp="my-preprocess-namespace"). Element to be replaced is <mypp:complexWidget a="$varA" b="$varB" c="$varC" d="$varD"/>.
This xslt I preprocess with following xslt.
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:mypp="my-preprocess-namespace">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:template match="node() | #*">
<xsl:copy>
<xsl:apply-templates select="node() | #*" />
</xsl:copy>
</xsl:template>
<xsl:template match="mypp:*">
<xsl:element name="xsl:call-template">
<xsl:attribute name="name">
<xsl:value-of select="local-name()" />
</xsl:attribute>
<xsl:for-each select="#*">
<xsl:element name="xsl:with-param">
<xsl:attribute name="name">
<xsl:value-of select="name()" />
</xsl:attribute>
<xsl:attribute name="select">
<xsl:value-of select="." />
</xsl:attribute>
</xsl:element>
</xsl:for-each>
</xsl:element>
</xsl:template>
</xsl:stylesheet>
It is based on "Identity transform" - copy everything to the output just elements from special namespace transform into the call-template element. I guess this could be done in more nice way than I did.
The output is
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:mypp="my-preprocess-namespace" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="text" />
<xsl:template match="/">
<xsl:variable name="varA" select="1"/>
<xsl:variable name="varB" select="2"/>
<xsl:variable name="varC" select="3"/>
<xsl:variable name="varD" select="4"/>
<xsl:call-template name="complexWidget">
<xsl:with-param name="a" select="$varA"/>
<xsl:with-param name="b" select="$varB"/>
<xsl:with-param name="c" select="$varC"/>
<xsl:with-param name="d" select="$varD"/>
</xsl:call-template>
</xsl:template>
<xsl:template name="complexWidget">
<xsl:param name="a"/>
<xsl:param name="b"/>
<xsl:param name="c"/>
<xsl:param name="d"/>
<!-- do something-->
<xsl:value-of select="$a"/>
<xsl:text>-</xsl:text>
<xsl:value-of select="$b"/>
<xsl:text>-</xsl:text>
<xsl:value-of select="$c"/>
<xsl:text>-</xsl:text>
<xsl:value-of select="$d"/>
</xsl:template>
</xsl:stylesheet>
When I run the output as xslt stylesheet it produces expected output.
But I don't have any deeper experience with producing xslt stylesheet by another xslt so I don't know much about possible troubles with this approach.
I have the source collection as below.
<SourceCollection>
<Row1>
<Col1>Store1</Col1>
<Col2>Med1</Col2>
<Col3>Val1</Col3>
</Row1>
<Row2>
<Col1>Store1</Col1>
<Col2>Med1</Col2>
<Col3>Val2</Col3>
</Row2>
<Row3>
<Col1>Store1</Col1>
<Col2>Med2</Col2>
<Col3>Val2</Col3>
</Row3>
<Row4>
<Col1>Store2</Col1>
<Col2>Med1</Col2>
<Col3>Val4</Col3>
</Row4>
</SourceCollection>
I want the target collection as below with minimal usage of for each.
<TargetCollection>
<Store value=Store1>
<Dim value=Med1>
<DimCode>Val1</DimCode>
<DimCode>Val2</DimCode>
</Dim>
<Dim value=Med2>
<DimCode>Val3</DimCode>
</Dim>
</Store>
<Store value=Store2>
<Dim value=Med1>
<DimCode>Val4</DimCode>
</Dim>
</Store>
</TargetCollection> `
In my initial design I used 3 for-each loops on the same source collection to form the target xml as required. But,the source collection contains millions of rows, which is making my transformation to traverse the whole list (Rows)to the power of 3 times, which is hitting the system performance.
Please let me know any ideas to avoid this.
Generally, using xsl:key can help speed up transforms. Try something like this:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output indent="yes"/>
<xsl:key name="Col1" match="Col1" use="."/>
<xsl:key name="Col2byCol1" match="Col2" use="concat(../Col1, '-', .)"/>
<xsl:key name="Col3byCol1andCol2"
match="Col3" use="concat(../Col1, '-', ../Col2, '-', .)"/>
<xsl:template match="#*|node()">
<xsl:copy>
<xsl:apply-templates select="#*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="SourceCollection">
<TargetCollection>
<xsl:apply-templates
select="*/Col1[generate-id() =
generate-id(key(local-name(), .)[1])]"/>
</TargetCollection>
</xsl:template>
<xsl:template match="Col1">
<xsl:variable name="Column1" select="."/>
<Store value="{.}">
<xsl:apply-templates select="../../*/Col2[generate-id() =
generate-id(key('Col2byCol1', concat($Column1, '-' ,.))[1])]"/>
</Store>
</xsl:template>
<xsl:template match="Col2">
<xsl:variable name="Column1" select="../Col1"/>
<xsl:variable name="Column2" select="."/>
<Dim value="{.}">
<xsl:apply-templates
select="../../*[Col2=$Column2]/Col3[generate-id() =
generate-id(key('Col3byCol1andCol2',
concat($Column1, '-', $Column2, '-',.)))]"/>
</Dim>
</xsl:template>
<xsl:template match="Col3">
<DimCode value="{.}">
<xsl:apply-templates />
</DimCode>
</xsl:template>
</xsl:stylesheet>