1. The learning site: http://www.w3schools.com/xpath /xpath_syntax.asp http://nwalsh.com/docs/tutorials/ xsl/xsl/slides.html

3. Empire Burlesque Bob Dylan USA Columbia 10.90 1985.

4. Empire Burlesque Bob Dylan USA Columbia 10.90 1985.

5. <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> My CD Collection Title Artist

6. What is XPath? 1. XPath is a syntax for defining parts of an XML document 2. XPath uses paths to define XML elements 3. XPath defines a library of standard functions 4. XPath is a major element in XSLT 5. XPath is not written in XML 6.XPath is a W3C Standard

7. XPath Example Empire Burlesque Bob Dylan 10.90 Hide your heart Bonnie Tyler 9.90 Greatest Hits Dolly Parton 9.90

8. Location steps an axis (specifies the tree relationship between the nodes selected by the location step and the current node) a node test (specifies the node type and expanded-name of the nodes selected by the location step) zero or more predicates (use expressions to further refine the set of nodes selected by the location step)

9. Axes

10. ancestor Ancestors of the current node ancestor-or-self - Ancestors, including the current node attribute - Attributes of the current node (abbreviated "@") child - Children of the current node (the default axis) descendant - Descendants of the current node descendant-or-self - Descendants, including the current node (abbreviated "//") following / following-sibling - Elements which occur after the current node, in document order preceding / preceding-sibling - Elements which occur before the current node, in document order (returned in reverse-document order) namespace - The namespace nodes of the current node parent - The parent of the current node (abbreviated "..") self - The current node (abbreviated ".")

11. child::cd -Selects all cd elements that are children of the current node (if the current node has no cd children, it will select an empty node-set) attribute::src - Selects the src attribute of the current node (if the current node has no src attribute, it will select an empty node-set) child::* - Selects all child elements of the current node attribute::* - Selects all attributes of the current node child::text() - Selects the text node children of the current node child::node() - Selects all the children of the current node descendant::cd - Selects all the cd element descendants of the current node ancestor::cd - Selects all cd ancestors of the current node ancestor-or-self::cd - Selects all cd ancestors of the current node and, if the current node is a cd element, the current node as well. child::*/child::price - Selects all price grandchildren of the current node / - Selects the document root

12. name - Matches element nodes * - Matches any element node namespace:name - Matches element nodes in the specified namespace namespace:* - Matches any element node in the specified namespace comment() - Matches comment nodes text() - Matches text nodes processing-instruction() - Matches processing instructions processing-instruction('target ’ ) - Matches processing instructions with the specified target node() - Matches any node Node Tests

13. Predicates nodetest[1] - Matches the first node nodetest[position()=last()] - Matches the last node nodetest[position() mod 2 = 0] - Matches even nodes element[@id='foo'] - Matches the element(s) with id attributes whos value is "foo" element[not(@id)] - Matches elements that don't have an id attribute author[firstname="Norman"] - Match elements that have children with the content "Norman". author[normalize-space(firstname)="Norman"] - Match "Norman" without regard to leading and trailing space. Predicate expressions can be more-or-less arbitrarily complex.

14. . - self @ - attribute ( cd[@type="classic"] is short for child::cd[attribute::type="classic"]).. - parent (../cd is short for parent::node()/child::cd) // - //cd is short for descendant-or- self::node()/child::cd

15. /catalog /catalog/cd /catalog/cd/price /catalog/cd[price>10.80] XPath Example(cont)

16. /catalog/cd/price /- represents an absolute path to an element // - all elements in the document that fulfill the criteria will be selected //cd /catalog/cd/* /catalog/*/price /*/*/price //* /catalog/cd[1] /catalog/cd[last()] /catalog/cd[price] /catalog/cd[price=10.90]

17. /catalog/cd[price=10.90]/price /catalog/cd/title | /catalog/cd/artist //@country //cd[@country] //cd[@*] //cd[@country='UK'] XPath Example(cont)