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XSLT Tutorial

XPath: Expressions

Expressions

Filter patterns can consist of expressions, such as booleans (and, or, etc.), substring and others. These expressions are found as the expression in the predicate or they can stand on their own.

Types of Expressions:

Node-sets

Expressions return a node-set selected by the operators, path locations and filters used in the query.

For example:

article[author="Jones" and author="Scott"]
  This returns article nodes where the author is Jones and Scott
    It may be necessary to code the quote marks as apostrophe (single quote mark).

article|book
  This returns article and book nodes using a compute (union).

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