This means you dont have to deal with xml as string objects, you deal with it as xml objects. To produce a pdf file from a xml file, first step is that we need an xslt stylesheet that converts the xml to xslfo. You want to write xml data to a file in a scala application, such as saving application data or configuration information to a file. Home scala scala xml processing literals, serialization, parsing, save and load examples xml is a form of semi structured data which is organized in the form of trees. This tutorial has been prepared for beginners to help them in understanding the. Pdf examples with sources dec, 2019 renderx provides examples of pdf documents with source data xml, xslt, xslfo to help you in evaluation of formatting tools and assist in development. For example, use xslt to produce html from xml document. You will learn how to build a simple pipeline that converts xml documents onthefly to html or pdf using. This is a trivial example, that creates some xml and prints out some information about it.
In the search box of the popup, type the library name scala xml and click the search icon. Community standards have had a very important role. Furthermore, variable bindings and nested subqueries were added. First you need to transform your xml file to xslfo using xslt. Im not going to take any time to describe the following scala xmlxpath example, other than to say that when its run, it produces the following output, which is a simulated receipt for an order at a pizza store.
Pdf examples with sources transformations previously we used dom and sax to extract data from an xml document and present that information as plain text, as html, or organized in a new xml document. Generate pdf from xml in java using apache fop knpcode. Ive posted about some features of scala s xml library that i like before. The root element that declares the document to be an xsl style sheet is xsl. In principle we could write this xml file by hand but, looking from figure 5. What to do and not do with xslt slide 30 business uses xslt because xml is everywhere c xslt was designed to process xml c takes full advantage of the tree c xml constructs are built in no special programming c solves problems with c order of the material. Here is the basic pattern to render an xslfo file to pdf. To make this article easier to read, i didnt include the complete contents of the xslt stylesheet used. Publishing xml data in html and pdf using a single xslt stylesheet. Some time ago i made a web application, where scala code generated xml that was lately transformed to html using xslt. The \ method returns all matching elements directly under the current node, and \\ returns all matching elements from all nodes under the current node all descendant. Viewing xml files in ie, chrome, firefox, safari, and opera.
Well, if you havent seen the scala xml syntax before, at first sight it might look like we are defined a string of xml, but look more closely and youll see that it isnt a string there are no quotation marks around it. The xsl code is written within the xml document with the extension of. When writing a scala application, you want to search an xml tree for the data you need using xpath expressions. Short tutorial video about apache fop for generating pdf xsl transformation fo file for more informatin just visit. Scala xml processing literals, serialization, parsing, save. It defines a transformation from xml into some other format. Xml processing with scala nov 3 rd, 20 given scalas builtin support for xml and its more concise syntax for dealing with iterables and collections i was interested to see what some of our java xml parsing code written using dom4j could look like in the scala world. Because the output of an xslfo instance document is processed by another program to get the final pdf output, it is a bit difficult to grasp the processing involved in the xslfo workflow. You can also rearrange and sort elements, perform tests and make. This tutorial will teach you how to use xslt to transform xml documents into other formats like transforming xml into html.
Semi structured data is helpful when you serialize the program data for saving in a file or shipping across a network. Xsl extensible stylesheet language is a styling language for xml. How to publish xml documents in html and pdf apache cocoon. Xml to rdf transformation processes using xslt rdf and xml. Thirdparty libraries can give you better support for actual xpath expressions, including. Code issues 29 pull requests 7 actions wiki security insights. You want to write xml data to a file in a scala application, such as saving application data or configuration information to a file solution. The result of applying xslt to xml document could be an another xml document, html, text or any another document from technology prespective. Major maintenance issues of xslt todo recommendations for future progress. These examples are extracted from open source projects. Given scalas builtin support for xml and its more concise syntax for dealing with iterables and collections i was interested to see what some of our java xml parsing code written using dom4j could look like in the scala world.
Xslt extensible stylesheet language transformations is the recommended style sheet language for xml. Xml namespace is used to avoid the name conflicts in the xml. With xslt you can transform an xml document into html. Xslt basic xslt home xsl languages xslt introduction xslt browsers xslt transform xslt xslt xslt xslt xslt xslt xslt apply xslt advanced xslt on the client xslt on the server xslt edit xml xslt editors xslt summary examples xslt examples references xslt elements xslt functions. In a scala application, you want to extract information from xml you receive, so you can use the data in your application. Xsl transformations previously we used dom and sax to extract data from an xml document and present that information as plain text, as html, or organized in a new xml document.
Xquery is a language for finding and extracting elements and attributes from xml documents. The typical generation of xslfo would be from our xml using an xslt stylesheet, though this need not be the case at all. It contains chapters discussing all the basic components of xslt with suitable examples. With our online editor, you can edit xml and xslt code, and click on a button to view the result. Pdf paperprint, voicexml aural presentations, svg graphics, html browsing. The examples will be uploaded to an exist xml database in a collection called htmland pdf singlestylesheet located in the root collection of exist, so you can view each example in your browser. Extensible stylesheet language transformation commonly known as xslt is a way to transform the xml document into other formats such as xhtml. For example, to see example 1, type this url in your browsers address bar assuming that exist is installed locally. The output spans over three us letter format pages that we reduced here to show the overview of all pages. Transforming xml data with xslt the java tutorials java api.
However, we usually need to process xml that is saved in a file, or a string, so the scala. This howto shows you how to publish xml documents in html and pdf using cocoon. Scala xml processing literals, serialization, parsing. How to create pdf from xml in java using apache fop tech. E x tensible s tylesheet l anguage t ransformation commonly known as xslt is a way to transform the xml document into other formats such as xhtml. This formatted document is then utilized by xslt formatter to generate the actual output which is to be. The most commonly used methods of the elem class are shown here commonly used methods of the elem class method description x \ div searches the. Xml literals, mixing xml and scala source code, xpath searching. Example xml data, xsl stylesheet and the resulting pdf are in data folder xml and xsl are courtesy of the xquery wikibook.
Xsl extensible stylesheet language is an application of xml that provides tools for transforming an xml document. Use the methods of the scala elem and nodeseq classes to extract the data. Open the xml file click on the link below the xml document will be displayed with colorcoded root and child elements except in safari. Xslt extensible stylesheet language transformations is a language for transforming xml documents into other xml documents, or other formats such as html for web pages, plain text or xsl formatting objects, which may subsequently be converted to other formats, such as pdf, postscript and png. Xslt i about the tutorial extensible stylesheet language transformation, commonly known as xslt, is a way to transform the xml document into other formats such as xhtml. Publishing xml data in html and pdf using a single xslt. How to put the community standard xslt extensions to work. I think this approach is better then lift templates. In the nfig, there is a little configuration section. As before, if you havent got a scala environment installed yet, i recommend the eclipse plugin for scala. Xpath is a specification language we can use to create a path to an element.
Pdf output of compaction by formatting objects xslfo of example 2. In the search box of the popup, type the library name scalaxml and click the search icon. Here are just a few examples of using xml in scala. For this task, use the xml data presented in listing 1, along with the xslt stylesheet xml tohtml. A really terrific feature about scala is that xml handling is built into the language. This chapter is devoted to java and xslt programming techniques that work for both standalone applications as well as servlets, with a particular emphasis on suns java api for xml processing jaxp api.
This jaxp java tutorial describes java api for xml processing jaxp, xslt. I think there is no way to directly create pdf from xml but using xslt or xsl fo i believe it can be done. With xslt you can addremove elements and attributes to or from the output file. For example, with a sufficiently intelligent stylesheet, you could generate pdf or. At best you could say that scala has a very small subset of xpathinspired operations. Mar 20, 2002 learning xslt, we can express our information in xml and then either transform the xml into html to send to the user agent, or send the xml directly to an xslt process in the user agent. This tutorial has been prepared for beginners to help them in.
This example will add a pink background color to the artist column when the price of the cd is higher than 10, and a grey backgroundcolor when the price of the cd is higher than 9 and lower or equal to 10. Use the \ and \\ methods, which are analogous to the xpath and expressions. Xslt processor takes the xslt stylesheet and applies the transformation rules on the target xml document and then it generates a formatted document in the form of xml, html, or text format. Scala xml processing literals, serialization, parsing, save and load examples xml is a form of semi structured data which is organized in the form of trees. This is an example of how to use xml and xpath in scala. And even showed a simple cli example of validating xml generated by play. Elem hello, world again, note that this is not a string, there are no double quotes. Both exist and csstoxslfo are written in the java language. A long list of possibilities shows up, and i chose the most recent version corresponding to my version of scala, 2. Using xml to transform other xml files introduction to databases csc343 fall 2011 ryan johnson thanks to manos papagelis, john mylopoulos, arnold rosenbloom and renee miller for material in these slides what is xslt. Xml namespace is a mechanism by which element or attribute is assigned to a group. So we will go backwards by first looking at the xslfo given as input to the renderer.
So you cant expect to take xpath expressions and directly paste them to scala without doing a bit more work. In other words, an xslt document is a different kind of xml document. The details of this example will be explained in the next chapter. Semi structured data is helpful when you serialize the program data for saving in. In chapter 6, we will apply these techniques to servlets, taking into account issues such as concurrency, deployment, and performance.
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