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    XSL, XSLT and Xpath

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    XSL, XSLT and Xpath

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    alleyboss30
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    Xsl, Xslt and Xpath

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    6 views19 pages

    XSL, XSLT and Xpath

    Uploaded by

    alleyboss30

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    © All Rights Reserved
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    of 19

    XSL, XSLT and XPATH

     is a family of standards that specifies how to define Extensible Markup


    Language (XML) document transformation and presentation. The
    standards are published by the World Wide Web Consortium (W3C), an
    international community that develops specifications related to web
    architecture, design, applications and other web technologies.

     is a style sheet language that is used for transforming and presenting


    What is XSL? XML documents. XSL is formalized as a specification World Wide Web
    (Enter name Consortium (W3C).

    here)  In fact, the XSL standard was based in part on CSS, level 1, as well as
    on the Document Style Semantics and Specification
    Language standard. The W3C published the first working draft of the
    XSL standard in August 1998.
     Design to send, store, receive, and display data.
    What is XSL?
     Is platform and programming language independent.
    (Enter name
    here)
    1. Creating XSL files
    An XSL file is a style sheet that can be used to transform
    XML documents into other document types and to format
    the output.
    2. Editing XSL files
    You can edit XSL files manually, using content assist, and
    automatically, using various XSL editor wizards. Editing
    your XSL file enables you to determine what kind of
    output is created when your XSL file is run.
    3. Validating XSL files
    The XSL validator ensures that the XSL file is well-
    formed. It tries to detect any static errors, that is, an error
    that can be detected in a style sheet before execution
    starts.
    Working with 4.Associating XSL files with XML files
    You can associate an XSL file with an XML file, so that, in
    XSL files certain circumstances, the XML file is automatically called
    by the XSL file.
    5.Working with XSL templates
    When using content assist in the XSL editor, or when you
    are creating a new XSL file, you can insert predefined
    XSL code from a template file into your XSL file You might
    find it helpful to use templates if you want to reuse XSL
    code multiple times.
    6.Generating compiled XSL
    To increase the speed of runtime processing of XSL
    stylesheets, you can precompile and integrate XSL 1.0 or
    2.0 stylesheet documents into Java projects.
     XSLT: It is a language for transforming XML documents into
    various other types of documents.
     XPath: It is a language for navigating in XML documents. Main parts of
     XQuery: It is a language for querying XML documents. XSL
     XSL-FO: It is a language for formatting XML documents.
    Document
     Extensible Stylesheet Language Transformations, provides
    the ability to transform XML data from one format to another
    automatically. What is XSLT?
     One of the easiest ways to understand what is XSLT
    (extensible stylesheet language transformations) is that it's
    simply a template for displaying specific information from
    more complex XML data sets.
     An XSLT stylesheet is used to define the
    transformation rules to be applied on the target XML
    document. XSLT stylesheet is written in XML format.

     XSLT Processor takes the XSLT stylesheet and applies


    the transformation rules on the target XML document
    How XSLT and then it generates a formatted document in the
    Works? form of XML, HTML, or text format.

     This formatted document is then utilized by XSLT


    formatter to generate the actual output which is to
    be displayed to the end-user.
    Advantages using XSLTschool

    • Independent of programming. Transformations are written in a separate xsl


    file which is again an XML document.

    • Output can be altered by simply modifying the transformations in xsl file. No


    need to change any code. So Web designers can edit the stylesheet and
    can see the change in the output quickly.
    DisAdvantages using XSLTschool

    • Memory intensive and suffers a performance penalty


    • Difficult to implement complicated business rules
    • Have to learn a new language (if not already familiar)
    • Can't change the value of variables (require recursions)
    What is
    XPATH?  is defined as XML path. It is a syntax or language for finding any element
    on the web page using the XML path expression. XPath is used to find the
    location of any element on a webpage using HTML DOM structure.

     stands for XML Path Language. It uses a non-XML syntax to provide a


    flexible way of addressing (pointing to) different parts of an XML document.
    It can also be used to test addressed nodes within a document to
    determine whether they match a pattern or not.
     Path contains the path of the element situated on the web page. The
    standard syntax for creating XPath is as follows:
     XPath=//tagname[@attribute='value']
     // : Select the current node.
     Tagname: Tagname of the particular node.
     @: Select attribute.
    Syntax for
     Attribute: Attribute the name of the node.
    XPath  Value: Value of the attribute.
    XPath Locators Find different elements on a web page.

    To find the element by the ID of the


    ID
    element.
    To find the element by the class name of
    Classname
    the element.

    Name To find the element by name of the element.

    Link Text To find the element by the text of the link.


    Types of
    XPath XPath
    XPath is required for finding the dynamic
    element and traversing between various
    Locators elements of the web page.

    CSS path also locates elements having no


    CSS path
    name, class, or ID.
     Absolute XPath
     Relative XPath
    two types of
    XPath
    Absolute Xpath

     is the direct way to find the element. But the disadvantage of the absolute
    XPath is that if there are any changes made in the path of the element then
    that XPath fails.
     The key characteristic of XPath is that it begins with the single forward
    slash(/), which means you can select the element from the root node.
    two types of Below is an example of an absolute XPath expression of the element
    XPath shown in the below screen.
    Relative Xpath

     A relative path, or a double slash search, begins with double slashes. The
    double slashes signify a break in the absolute path. Here is how to select
    two types of the same business email field using a relative path.
    XPath
    Relative Xpath

     A relative path, or a double slash search, begins with double slashes. The
    double slashes signify a break in the absolute path. Here is how to select
    the same business email field using a relative path.
     is defined as a type of XPath used to search an element node anywhere
    that exist on the web page. It is specified by the double forward slash
    notation (//) which starts from the middle of the DOM Structure and it is not
    Syntax necessary to add a long XPath. No need to start from the root node could
    start with the node that we have selected and relative path can have
    children as well. And This Relative Path is preferred due to no direct
    access from the root node.
    Syntax

    The general format used to search an element is given below:

    // tagname[@ attribute=’value’]

    Here

    Syntax // is the current node element


    Tag: is the element node like < p> , <div > etc.
    @: It denotes an attribute.s
    // *[@class= ‘value ‘]
    ACTIVITYY

     What are the differences between XSL and CSS?


     List down the capabilities of the XSL.
     Is XSL similar to XML?
     Is XSL user friendly?

    Submission thru google drive


    Deadline:April 3, 2024
    Thank You!

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