Class Namespace

All Implemented Interfaces:
Serializable, SourceLocator, Container, Expression, TailCallReturner, InstructionInfoProvider

public class Namespace extends SimpleNodeConstructor
An xsl:namespace element in the stylesheet. (XSLT 2.0)
See Also:
  • Constructor Details

  • Method Details

    • getInstructionNameCode

      public int getInstructionNameCode()
      Set the name of this instruction for diagnostic and tracing purposes
      Overrides:
      getInstructionNameCode in class Instruction
    • simplify

      public Expression simplify(StaticContext env) throws XPathException
      Description copied from class: Instruction
      Simplify an expression. This performs any static optimization (by rewriting the expression as a different expression). The default implementation does nothing.
      Specified by:
      simplify in interface Expression
      Overrides:
      simplify in class SimpleNodeConstructor
      Parameters:
      env - the static context
      Returns:
      the simplified expression
      Throws:
      XPathException - if an error is discovered during expression rewriting
    • getItemType

      public ItemType getItemType(TypeHierarchy th)
      Description copied from class: Instruction
      Get the item type of the items returned by evaluating this instruction
      Specified by:
      getItemType in interface Expression
      Overrides:
      getItemType in class Instruction
      Parameters:
      th -
      Returns:
      the static item type of the instruction
    • getCardinality

      public int getCardinality()
      Description copied from class: ComputedExpression
      Determine the static cardinality of the expression. This establishes how many items there will be in the result of the expression, at compile time (i.e., without actually evaluating the result.
      Specified by:
      getCardinality in interface Expression
      Overrides:
      getCardinality in class ComputedExpression
      Returns:
      one of the values Cardinality.ONE_OR_MORE, Cardinality.ZERO_OR_MORE, Cardinality.EXACTLY_ONE, Cardinality.ZERO_OR_ONE, Cardinality.EMPTY. This default implementation returns ZERO_OR_MORE (which effectively gives no information).
    • promoteInst

      protected void promoteInst(PromotionOffer offer) throws XPathException
      Description copied from class: SimpleNodeConstructor
      Offer promotion for subexpressions. The offer will be accepted if the subexpression is not dependent on the factors (e.g. the context item) identified in the PromotionOffer. By default the offer is not accepted - this is appropriate in the case of simple expressions such as constant values and variable references where promotion would give no performance advantage. This method is always called at compile time.
      Overrides:
      promoteInst in class SimpleNodeConstructor
      Parameters:
      offer - details of the offer, for example the offer to move expressions that don't depend on the context to an outer level in the containing expression
      Throws:
      XPathException - if any error is detected
    • localTypeCheck

      public void localTypeCheck(StaticContext env, ItemType contextItemType)
      Specified by:
      localTypeCheck in class SimpleNodeConstructor
    • iterateSubExpressions

      public Iterator iterateSubExpressions()
      Description copied from class: ComputedExpression
      Get the immediate sub-expressions of this expression. Default implementation returns a zero-length array, appropriate for an expression that has no sub-expressions.
      Specified by:
      iterateSubExpressions in interface Expression
      Overrides:
      iterateSubExpressions in class SimpleNodeConstructor
      Returns:
      an iterator containing the sub-expressions of this expression
    • replaceSubExpression

      public boolean replaceSubExpression(Expression original, Expression replacement)
      Replace one subexpression by a replacement subexpression
      Specified by:
      replaceSubExpression in interface Container
      Overrides:
      replaceSubExpression in class SimpleNodeConstructor
      Parameters:
      original - the original subexpression
      replacement - the replacement subexpression
      Returns:
      true if the original subexpression is found
    • evaluateNameCode

      public int evaluateNameCode(XPathContext context) throws XPathException
      Overrides:
      evaluateNameCode in class SimpleNodeConstructor
      Throws:
      XPathException
    • processLeavingTail

      public TailCall processLeavingTail(XPathContext context) throws XPathException
      Description copied from class: Instruction
      ProcessLeavingTail: called to do the real work of this instruction. This method must be implemented in each subclass. The results of the instruction are written to the current Receiver, which can be obtained via the Controller.
      Specified by:
      processLeavingTail in interface TailCallReturner
      Specified by:
      processLeavingTail in class Instruction
      Parameters:
      context - The dynamic context of the transformation, giving access to the current node, the current variables, etc.
      Returns:
      null if the instruction has completed execution; or a TailCall indicating a function call or template call that is delegated to the caller, to be made after the stack has been unwound so as to save stack space.
      Throws:
      XPathException
    • display

      public void display(int level, PrintStream out, Configuration config)
      Display this instruction as an expression, for diagnostics
      Specified by:
      display in interface Expression
      Overrides:
      display in class SimpleNodeConstructor
      Parameters:
      level - indentation level for this expression
      out - Output destination
      config -