ACG 4401 XSLT Extensible Stylesheet Language for Transformations Presenting XML and XBRL.
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ACG 4401 XSLT Extensible Stylesheet Language for Transformations Presenting XML and XBRL
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Transcript of ACG 4401 XSLT Extensible Stylesheet Language for Transformations Presenting XML and XBRL.
ACG 4401
XSLT
Extensible Stylesheet Language for Transformations
Presenting XML and XBRL
XSLT
Extensible Hey it’s based on XML
Stylesheet What the data will look like
Language Scripting
Transformations Reuse, Repurpose, calculate, sort, etc.
XSLT Parts
XSL Transform Instance Document to different
Form HTML, XHTML, XML (new), PDF
XSLFO For formatting data
Re-Purpose
The main benefit of XML / XBRL Reusability of Data contained in Instance
Document We need a method of presenting the data
Presentation Linkbase XSLT
A UBL Catalogue Node Tree
Catalogue
ID NameIssueDate
+Provider
Party
+Receiver
Party
+Catalogue
Line
Leaf NodesBranch Nodes
Party PartyName Name
Transformation Requires xml code in Two Documents
Instance Document 2nd Prolog line linking instance document to
XSLT document XSLT Document
Contains script for selecting elements to be displayed
XSLTXSLT
• 2 Inputs:2 Inputs:• Instance & XSLTInstance & XSLT
• ProcessingProcessing• BrowserBrowser
XML Processor
XMLInstance
document
XSLTInstructions
XMLResult
document
Must have 2nd prolog linking to .xsl
Transforming your Instance Document
Contain elements and data but.. Do NOT contain formatting information
Add an additional prolog statement Connects your .xml to your .xsl document<?xml-stylesheet type=“text/xsl” href=“name.xsl”?>
xml-stylesheet Tells the processor to use the stylesheet file to transform the
data in the .xml document href=
Points to location of .xsl document.
XSLT (the XML code)
Root Element namespace declaration <xsl:stylesheet xmlns:xsl=“
http://www.w3.org/1999/XSL/Transform” version="1.0"> All other namespaces used in the instance document (MUST
MATCH) Default namespaces (e.g. without the prefix) are not
allowed in XSLT v 1.0 Need to make up a prefix
Don’t forget this!
XSLT Scripting Code
Elements used: templates for-each value-of Functions
FormattingFormat-number
SumMathematical Operations
+, -, *, div
Templates
Line that follows root element What elements from .xml are being
used? Templates provide answer Processing Elements from Instance
against Template created in XSLT <xsl:template match=“/”>
/ = Look in entire source document
How to transform data
<HTML> container Tells processor transformation will use html
tags. Remaining code between <HTML> and
</HTML> code is the data to be transformed and the formatting code for the transformation
<?xml version="1.0"?>
<Inventory> <InventoryItem>
<Name>Basketball</Name><IdNumber>12345</IdNumber>
<Cost units="USD">12.50</Cost><RetailPrice units="USD">25.00</RetailPrice>
</InventoryItem>
</Inventory>
value-of Selects and transforms/formats Displays the value of the selected element
At the end of the node Based on select attribute
You must point to the “node” you want displayed “Full node path”
“Inventory/InventoryItem/IdNumber” = 12345 “//elementname”
Used when one and only one element has the name Start at root and look for element name.
<xsl:value-of select=“NodeName”/> Value-of select can use a function.....
Functions
Numeric ceiling() floor() number() round() sum()
String concat() contains() normalize-space() starts-with() string() string-length() substring() substring-after() substring-before() translate()
format() function
format-number attribute has two arguments Number Pattern (see formatting patterns)
<xsl:value-of select =“format-number(Inventory/InventoryItem/Cost,’$#.00’)”/>
Numberpattern
Formatting Numbers
0 A digit. # A digit, zero shows as absent. $ prefix . (period) Placeholder for decimal separator. , Placeholder for grouping separator. ; Separate formats. - Default prefix for negative. % Multiply by 100 and show as a percentage. X Any other characters can be used in the prefix or suffix. ‘ Used to quote special characters in a prefix or suffix.
for-each loop
Selects All elements contained in a node-set
Node-set is declared with select attribute
Additional .xsl code provide instructions for what to do with selected data What transformations to make HTML, and XSL tags combined.
<xsl:for-each select=“Inventory/InventoryItem>
Accessing Remote Instance Docs
document() function
<xsl:value-of select=“document(‘URI.xml’)/xpath”/>
Output (HTML)
<HTML> Transformation will be to an HTML doc.
<Center> All tags must be closed!
Defining Tables in HTML
<Table Border=“n”> Tells browser to begin making a tabl
<TR> Tells browser to insert a new row
<TH> Tells browser to use text as heading (1st row)
<TD> Tells browser to insert a new column in the
new row Close all tags
</TD>, </TR>, </Table>
Table with 2 rows and 3 columns
<TABLE BORDER=“1”>
<TR>
<TD>r1c1</TD>
<TD>r1c2</TD>
<TD>r1c3</TD></TR>
<TR>
<TD>r2c1</TD>
<TD>r2c2</TD>
<TD>r2c3</TD></TR>
