I use this rule of thumb: An Attribute is something that is self-contained, i.e., a color, an ID, a name. An Element is something that does or could have attributes of its own or contain other elements. So yours is close. I would have done something like: EDIT: Updated the original example based on feedback … Read more
It means XML namespace. Basically, every element (or attribute) in XML belongs to a namespace, a way of “qualifying” the name of the element. Imagine you and I both invent our own XML. You invent XML to describe people, I invent mine to describe cities. Both of us include an element called name. Yours refers … Read more
The real problem is that what XML::Simple primarily tries to do is take XML, and represent it as a perl data structure. As you’ll no doubt be aware from perldata the two key data structures you have available is the hash and the array. Arrays are ordered scalars. hashes are unordered key-value pairs. And XML … Read more
CDATA stands for Character Data and it means that the data in between these strings includes data that could be interpreted as XML markup, but should not be. The key differences between CDATA and comments are: As Richard points out, CDATA is still part of the document, while a comment is not. In CDATA you … Read more
The problem: your XML puts its elements in a namespace. Solution: declare the same namespace in your stylesheet, assign it a prefix and use that prefix to address the elements in the source XML: XSLT 1.0 <xsl:stylesheet version=”1.0″ xmlns:xsl=”http://www.w3.org/1999/XSL/Transform” xmlns:met=”www.metoffice.gov.uk/xml/metoRegionalFcst” exclude-result-prefixes=”met”> <xsl:template match=”https://stackoverflow.com/”> <html> <body> <xsl:value-of select=”met:RegionalFcst/met:FcstPeriods/met:Period/met:Paragraph[@title=”Headline:”]”/> </body> </html> </xsl:template> </xsl:stylesheet>
If you use an appropriate class or library, they will do the escaping for you. Many XML issues are caused by string concatenation. XML escape characters There are only five: ” " ‘ ' < < > > & & Escaping characters depends on where the special character is used. The examples can be validated … Read more
Defining namespaces in XPath (recommended) XPath itself doesn’t have a way to bind a namespace prefix with a namespace. Such facilities are provided by the hosting library. It is recommended that you use those facilities and define namespace prefixes that can then be used to qualify XML element and attribute names as necessary. Here are … Read more
Yes, see here: http://expath.org/modules/http-client/ This module defines a set of functions to send HTTP & HTTPS requests and handle responses. This is a quite low-level functionality, allowing one to deal with most aspects of the HTTP protocol (redirections, headers, body contents, multipart…), while integrating smoothly within the XPath Data Model.
XML::Simple is abysmal, especially for generating XML. You said the format should be the following: <keys> <key1><value1></value1></key1> […] </keys> That format doesn’t make much sense. The solution below produces XML in the following format: <elements> <element><key>key1</key><value>value1</value></element> […] </elements> Solution: use XML::Writer qw( ); open(my $fh, ‘>’, $qfn) or die(“Can’t create \”$qfn\”: $!\n”); my $writer = … Read more