1.2 XML Processing

• SAX (Simple API for XML). Low-level approach viewing an XML document as a sequence of tokens to which actions are assigned.
  <course> <number>CIS 788</number> <quarter> ... </course>

  act on open element:	course
  act on open element:	number
  act on text:	CIS 788
  act on close element:	number
  act on open text:	quarter
  .......
  act on close element:	course

• DOM (Document Object Model). Offers a tree-structured view of the content for traversal by the user.

  <course>                         |      +---------+--------+-------+-------------+      |         |                |             |   <number> <quarter>          <days>        <note>      |         |                |             |      |         |       +--------+-------+   .....      |         |       |        |       |   CIS 788   Autumn   <day>    <day>   <day>                        |        |       |                      Monday Wednesday Friday

  <course>   <number>CIS 788</number>   <quarter>Autumn</quarter>   <days>      <day>Monday</day>      <day>Wednesday</day>      <day>Friday</day>   </days>   <note ...>...</note> </course>

• XSLT (Extensible Stylesheet Language Transformation) Provides a template-oriented instead of procedural-oriented approach
  <xsl:template match="course">
     <crs>
        <xsl:apply-templates select="*" />
     </crs>
  </xsl:template>
• JDOM (Java Document Object Model): a variant of DOM adjusted for streamlined for java.