Class PatternWithPredicate

java.lang.Object
net.sf.saxon.pattern.Pattern
net.sf.saxon.pattern.PatternWithPredicate
All Implemented Interfaces:
Serializable, SourceLocator, Container, PatternFinder
public class PatternWithPredicate extends Pattern
See Also:

  • Constructor Details

    • PatternWithPredicate

      public PatternWithPredicate(Pattern basePattern, Expression predicate)

  • Method Details

    • matches

      public boolean matches(Item item, XPathContext context) throws XPathException
      Determine whether this Pattern matches the given Node. This is the main external interface for matching patterns: it sets current() to the node being tested
      Specified by:
      matches in class Pattern
      Parameters:
      item - The NodeInfo representing the Element or other node to be tested against the Pattern
      context - The dynamic context. Only relevant if the pattern uses variables, or contains calls on functions such as document() or key().
      Returns:
      true if the node matches the Pattern, false otherwise
      Throws:
      XPathException - if a dynamic error occurs during pattern matching

    • getItemType

      public ItemType getItemType()
      Get an ItemType that all the items matching this pattern must satisfy
      Specified by:
      getItemType in class Pattern
      Returns:
      an ItemType, as specific as possible, which all the matching items satisfy

    • iterateSubExpressions

      public Iterator iterateSubExpressions()
      Iterate over the subexpressions within this pattern
      Overrides:
      iterateSubExpressions in class Pattern
      Returns:
      an iterator over the subexpressions. Default implementation returns an empty sequence

    • analyze

      public Pattern analyze(ExpressionVisitor visitor, ExpressionVisitor.ContextItemType contextItemType) throws XPathException
      Type-check the pattern.
      Overrides:
      analyze in class Pattern
      Parameters:
      visitor - the expression visitor
      contextItemType - the type of the context item at the point where the pattern is defined. Set to null if it is known that the context item is undefined.
      Returns:
      the optimised Pattern
      Throws:
      XPathException - if a static error is discovered

    • getDefaultPriority

      public double getDefaultPriority()
      Determine the default priority to use if this pattern appears as a match pattern for a template with no explicit priority attribute.
      Overrides:
      getDefaultPriority in class Pattern
      Returns:
      the default priority for the pattern