What is XML event in COBOL?
What is XML event in COBOL?
The XML-EVENT special register communicates event information from the XML parser to the processing procedure identified in the XML PARSE statement. Before passing control to the processing procedure, the XML parser sets the XML-EVENT special register to the name of the XML event.
What is event based XML parser?
Event-based parsing of an XML document allows you to process data from that document in smaller chunks and in the order in which it is found by the parser. Whenever the parser has found a new logical element – e.g. an element, an attribute, text data, a comment, a processing instruction etc.
Is XML DOM parser event based?
It is an event based parser, it works like an event handler in Java.
Which is an event driver parser for XML?
The interface for parsing XML is described in the abstract base class QXmlContentHandler. We call this a passive interface because these methods get called, just not from our code. QXmlSimpleReader is provided, which reads an XML file and generates parse events, calling methods on a content handler in response to them.
What is event in XML file?
An event is the representation of some asynchronous occurrence (such as a mouse click on the presentation of the element, or an arithmetical error in the value of an attribute of the element, or any of unthinkably many other possibilities) that gets associated with an element (targeted at it) in an XML document.
What is DOM and SAX in XML?
DOM stands for Document Object Model. The DOM API provides the classes to read and write an XML file. DOM reads an entire document. It is useful when reading small to medium size XML files….DOM Parser.
| SAX Parser | DOM Parser |
|---|---|
| A small part of the XML file is only loaded in memory. | It loads whole XML documents in memory. |
Why XML parser is called event-based parser?
Event-Based Parsing Event-based parsers (SAX) provide a data-centric view of XML. When an element is encountered, the idea is to process it and then forget about it. The event-based parser returns the element, its list of attributes, and the content.
What is event driven XML?
As an XML parser reads a document, it moves from the beginning of the document to the end. It may pause to retrieve external resources—for a DTD or an external entity, for instance—but it builds an understanding of the document as it moves along.
What are events in Magento?
What is events in Magento? Events are dispatched by modules when certain actions are triggered. In addition to its own events, Magento allows you to create your own events that can be dispatched in your code. When an event is dispatched, it can pass data to any observers configured to watch that event.
What is Ajax and DOM?
AJAX = Asynchronous JavaScript And XML. AJAX is not a programming language. AJAX just uses a combination of: A browser built-in XMLHttpRequest object (to request data from a web server) JavaScript and HTML DOM (to display or use the data)
How does XML PARSE statement in COBOL work?
Execution of the XML PARSE statement begins the parsing and establishes the processing procedure with the parser. The parser transfers control to the processing procedure for each XML event that it detects while processing the document.
How does the XML event special register work?
The XML-EVENT special register communicates event information from the XML parser to the processing procedure identified in the XML PARSE statement. Before passing control to the processing procedure, the XML parser sets the XML-EVENT special register to the name of the XML event.
What happens at the end of each XML segment?
The parser processes the XML text and transfers control to the processing procedure for each XML event. The processing procedure handles each event and returns to the parser. At the end of the segment, the parser sets XML-EVENT to END-OF-INPUT , sets XML-CODE to zero, and transfers control to the processing procedure.
When does XML parser Set XML-ntext to the text?
When the XMLPARSE (COMPAT) compiler option is in effect, the parser sets XML-NTEXT to the text of any numeric character reference (for events ATTRIBUTE-NATIONAL-CHARACTER and CONTENT-NATIONAL-CHARACTER) regardless of the type of the XML document data item.
