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XML Basics, Advanced XML, and XML tools. Each of these sections contain related topics with simple and useful examples. Audience. This reference has been. Linking XSL to your XML Source Using XPath to Navigate an XML Document . Note Notes provide information that is useful, but not absolutely necessary for . „XML is the cure for your data exchange, information pdf"> .. XML Schema Basics.
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Example: Barebones DocBook. XML Schema: An Alternative to DTD s. 6 Transformation: Repurposing Documents. Transformation Basics. The following example is a note to Tove, from Jani, stored as XML: .. The id attributes above are for identifying the different notes. It is not a part of the . xml version="" encoding="UTF-8"?> Belgian Waffles $ Two of our famous .
In this example, we have declared the namespace prefix as "emp", and the namespace identifier URI as "urn: This means that element names and attribute names with the "emp" prefix including the employee element all belong to the urn: While the namespace declaration is described as a start tag attribute, this is different than a regular attribute.
Elements having only an "xmlns: Any arbitrary text string can be used as a namespace prefix; since there is no special meaning, any text string will do. However, the URI must be universally unique. Quite often a URL beginning with "http: Since the URL is not actually accessed, it is not a problem if the file, etc.
Understand that a URI represents nothing more than a logical namespace name. The namespace declaration scope is the scope for which the namespace prefix declared in a namespace declaration can be described. This scope covers the element and element content from the element start tag to the end tag for which the namespace declaration has been written.
A namespace prefix can be written for an element or descendant element for which a namespace has been declared, or for an attribute defined therein. A separate namespace declaration can be made for the descendant element of an element for which a namespace declaration has already been made, and a different namespace prefix within that scope can be used as well.
In addition to highest-order elements, namespace declarations can also be made in discrete sections. However, the same namespace declaration would have to be repeated many times, making the XML document difficult to follow. In this type of situation, it is best to make a collective set of namespace declarations in the highest-order element, as shown in the LIST1 example.
Attributes can either belong to the same namespace of the element for which the attribute is defined, or belong to a completely different namespace than that to which the element belongs. The definition for an attribute that belongs to a namespace is the same as that for elements, with the "namespacePrefix: If no namespace prefix is provided for the attribute name, the attribute will not belong to any namespace.
What must be noted here is that under the XML 1.
However, for XML documents conforming to the Namespaces in XML specification, the combination of namespace identifier and attribute name is what determines whether an attribute is duplicated.
Accordingly, if the namespace identifier is different, attributes having the same attribute name are considered to be different. A "default namespace" is a namespace declaration that does not use a namespace prefix See Figure 11 for notation method. The scope of the default namespace is the element for which the namespace was declared and the related content, just as with the namespace scope discussed earlier.
The benefit of using a default namespace is that the namespace prefix can be omitted. For example, when adding a new namespace to an existing XML document, writing a namespace prefix for each element to which the new namespace will be applied involves a tremendous amount of tedious work.
The larger the XML document, the greater the labor involved, and the greater the likelihood of notation errors. In this type of situation, adding only a default namespace declaration to the XML document in question eliminates the need to write a namespace prefix for each and every element, saving a lot of time.
On the other hand, there are drawbacks. One drawback is that omitting the namespace prefix makes it more difficult to understand which element belongs to which namespace, and which namespace is applicable. In addition, programmers should remember that when a default namespace is declared, the namespace is applied only to the element, and not to any attributes.
A default namespace can be overwritten partially by declaring a completely different default namespace within the scope of the original default namespace. If you need to send content to people who don't have access to Confluence, you can export a single page as a Word document or a PDF. You can also export a single blog post to PDF.
To make your PDF layout customisations apply to a single page exported to PDF, you'll need to use the 'multiple page' method described below to export the single page. The HTML export is useful if you want convert your space into a static website, or you can use t he XML export option if you need to import the space into another Confluence site, or use the data from the space in another application. Blog posts aren't included when exporting to PDF using this method, and comments are never included when exporting to PDF.
You can add a title page, table of contents, and customised headers and footers to the PDF output. However, look closely and what do you see? Firefox is a popular open-source browser, and at the time this book went to print the latest version was 1. You can download a free copy from the Mozilla website. How do you do that? Well, there are a couple of options, listed below.
All you have to do is visit the appropriate page, upload your document, and the parser will validate it. Here is the most popular online parser. Viewing raw XML in Firefox. Using a Local Validating Parser Sometimes, it may be impractical to use a Website to validate your XML because of issues relating to connectivity, privacy, or security. Just download the package and install it by following the instructions provided. Be warned, however, that you will have to know something about working with Java tools and files before you can get this one installed successfully.
This checks for well-formedness if the document has no DTD, and for well-formedness and validity if a DTD is specified. Results of the validation will appear under the Results area, as illustrated in Figure 1. For most purposes, an online resource will do the job nicely. If you work in a company that has an established software development group, chances are that one of the XML-savvy developers has already set up a good validating parser. This project will help ground your skills as you obtain firsthand experience with practical XML development techniques, issues, and processes.
It usually consists of the following components: A data back-end comprising XML or database tables that contains all your articles, news stories, images, and other content. A data display component — usually templates or other pages — onto which your articles, images, etc.
A data administration component. This usually comprises easy-to-use HTML forms that allow site administrators to create, edit, publish, and delete articles in some kind of secure workflow.
Requirements Gathering Before you build any kind of CMS, first you must gather information that defines the basic requirements for the project. The goal of the CMS is to make things easier for those who need to develop and run the site. And making things easier means having to do more homework beforehand!
Although you may groan at the thought of this kind of exercise, a set of well-defined requirements can make the project run a lot more smoothly. What kind of requirements do we need to gather?
Essentially, requirements fall into three major categories: What kind of content will the CMS handle? How is each type of content broken down? Who will be visiting the site, and what behaviors do these users expect to find? For example, will they want to browse a hierarchical list of articles, search for articles by keyword, see links to related articles, or all three? What do the site administrators need to do?
For example, they may need to log in securely, create content, edit content, publish content, and delete content. If your CMS will provide different roles for administrative users — such as site administrators, editors, and writers — your system will become more complex. In the world of XML, each of these different types of content is, naturally enough, called a document type.
You also have to know how each of these content types will break out into its separate components, or metadata. Each article, for instance, will have various pieces of metadata, such as a headline, author name, and keywords, each of which the CMS needs to track.
The final challenge — to define various types of metadata — can be a blessing in disguise. In my experience, once people grasp the importance of metadata, they race off in every direction and collect every single piece of metadata they can find about a given content type. For example, the client might start to track the date on which an article is first drafted.
When was it first published? When should it automatically be removed from the site, or archived? How is this document uniquely identified in the system?
Who holds the copyright to it? What other content is it related to? Which keywords describe the content for indexing or search purposes in other words, how do we find the content?