How to send XSLT array to template - arrays

Question

I need to take a data array from one node in XML and then use in XSL template.
Input data look like this:
<InpData>
<period number="1">
<Storage>
<Item weight="10.5" height="5" width="15" length="20"/>
<Item weight="20.75" height="4.5" width="7.3" length="18"/>
<Item weight="10.5" height="5" width="15" length="20"/>
</Storage>
<Transportation>
<Items>
<Item>
<DestRegion value="5"/>
<Sender name="Smith" company="BlueSky" />
<Date day="03" month="03" year="2017" />
<Item/>
<Item>
<DestRegion value="6"/>
<Sender name="Pith" company="BlueSky" />
<Date day="03" month="03" year="2017" />
<Item/>
<Item>
<DestRegion value="5"/>
<Sender name="Bill" company="BlueSky" />
<Date day="03" month="03" year="2017" />
<Item/>
<Items/>
</Transportation>
<period/>
<period number="2">
<period/>
</InpData>
And I need to combine nodes and to have output xml like that:
<period number="1">
<Items>
<Item weight="10.5" senderName="Smith"/>
<Item weight="20.75" senderName="Pith"/>
<Item weight="10.5" senderName="Bill"/>
<Items/>
<period/>
I made XSLT script:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:transform version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="period">
<xsl:variable name="weight" select="Storage/Item/#weight"></xsl:variable>
<period number="{#number}">
<Items>
<xsl:apply-templates select="Transportation/Items/Item">
<xsl:with-param name="weight_1">
<xsl:value-of select="$weight" />
</xsl:with-param>
</xsl:apply-templates>
</Items>
</period>
</xsl:template>
<xsl:template match="Transportation/Items/Item">
<xsl:param name="weight_1"/>
<xsl:variable name="pos" select="position()"></xsl:variable>
<Item weight="{$weight_1[$pos]}" senderName="{Sender/#name}">
</xsl:template>
</xsl:transform>
But it doesn't work properly. I can send to template for example and it works if I will use just $weight_1 without indexes in the template. But I cannot use $weight_1[$pos] in the template.
Please tell me how can I use the array weight in XSLT properly?

Answer 1

Why can't you do simply:
<xsl:template match="period">
<period number="{#number}">
<Items>
<xsl:for-each select="Storage/Item">
<xsl:variable name="i" select="position()" />
<Item weight="{#weight}" senderName="{../../Transportation/Items/Item[$i]/Sender/#name}"/>
</xsl:for-each>
</Items>
</period>
</xsl:template>
(assuming that the only thing that links the items is their position in their parent element).
Added:
To do it the way you have started, you'd need to do something like:
XSLT 1.0
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:template match="/InpData">
<root>
<xsl:apply-templates select="period"/>
</root>
</xsl:template>
<xsl:template match="period">
<period number="{#number}">
<Items>
<xsl:apply-templates select="Transportation/Items/Item">
<xsl:with-param name="weights" select="Storage/Item/#weight"/>
</xsl:apply-templates>
</Items>
</period>
</xsl:template>
<xsl:template match="Item">
<xsl:param name="weights"/>
<xsl:variable name="i" select="position()" />
<Item weight="{$weights[$i]}" senderName="{Sender/#name}"/>
</xsl:template>
</xsl:stylesheet>