Package com.saxonica.xsltextn.instruct

Class TabulateMaps

java.lang.Object
net.sf.saxon.expr.Expression
net.sf.saxon.expr.instruct.Instruction
com.saxonica.xsltextn.instruct.TabulateMaps
All Implemented Interfaces:
ExportAgent, Locatable, IdentityComparable, Traceable
public class TabulateMaps extends Instruction
Handler for a saxon:tabulate-maps instruction in an XSLT stylesheet.
Since:
9.9

  • Constructor Details

    • TabulateMaps

      public TabulateMaps(Expression root, Expression select)
      Create the instruction
      Parameters:
      root - the expression in the saxon:tabulate-maps/@root attribute
      select - the expression in the saxon:tabulate-maps/@select attribute

  • Method Details

    • getRootExpression

      public Expression getRootExpression()
      Get the expression in the @root attribute
      Returns:
      the root expression

    • getSelectExpression

      public Expression getSelectExpression()
      Get the expression in the @select attribute
      Returns:
      the select expression

    • setRootExpression

      public void setRootExpression(Expression expr)
      Set the expression in the @root attribute
      Parameters:
      expr - the root expression

    • setSelectExpression

      public void setSelectExpression(Expression expr)
      Set the expression in the @select attribute
      Parameters:
      expr - the select expression

    • operands

      public Iterable<Operand> operands()
      Description copied from class: Expression
      Get the immediate sub-expressions of this expression, with information about the relationship of each expression to its parent expression.

      If the expression is a Callable, then it is required that the order of the operands returned by this function is the same as the order of arguments supplied to the corresponding call() method.

      Specified by:
      operands in class Instruction
      Returns:
      an iterator containing the sub-expressions of this expression

    • getInstructionNameCode

      public int getInstructionNameCode()
      Get the name of this instruction for diagnostic and tracing purposes
      Overrides:
      getInstructionNameCode in class Instruction
      Returns:
      the integer namecode of the QName saxon:tabulate-maps

    • typeCheck

      public Expression typeCheck(ExpressionVisitor visitor, ContextItemStaticInfo contextInfo) throws XPathException
      Description copied from class: Expression
      Perform type checking of an expression and its subexpressions. This is the second phase of static optimization.

      This checks statically that the operands of the expression have the correct type; if necessary it generates code to do run-time type checking or type conversion. A static type error is reported only if execution cannot possibly succeed, that is, if a run-time type error is inevitable. The call may return a modified form of the expression.

      This method is called after all references to functions and variables have been resolved to the declaration of the function or variable. However, the types of such functions and variables may not be accurately known if they have not been explicitly declared.

      Overrides:
      typeCheck in class Expression
      Parameters:
      visitor - an expression visitor
      contextInfo - Information available statically about the context item: whether it is (possibly) absent; its static type; its streaming posture.
      Returns:
      the original expression, rewritten to perform necessary run-time type checks, and to perform other type-related optimizations
      Throws:
      XPathException - if an error is discovered during this phase (typically a type error)

    • copy

      public Expression copy(RebindingMap rebindings)
      Copy an expression. This makes a deep copy.
      Specified by:
      copy in class Expression
      Parameters:
      rebindings - variables that need to be re-bound
      Returns:
      the copy of the original expression

    • getItemType

      public ItemType getItemType()
      Get the item type of the items returned by evaluating this instruction
      Overrides:
      getItemType in class Instruction
      Returns:
      the static item type of the instruction

    • export

      public void export(ExpressionPresenter out) throws XPathException
      Diagnostic print of expression structure. The abstract expression tree is written to the supplied output destination.
      Specified by:
      export in interface ExportAgent
      Specified by:
      export in class Expression
      Parameters:
      out - the expression presenter used to display the structure
      Throws:
      XPathException - if the export fails, for example if an expression is found that won't work in the target environment.

    • getElaborator

      public Elaborator getElaborator()
      Description copied from class: Expression
      Make an elaborator for this expression
      Overrides:
      getElaborator in class Expression
      Returns:
      an appropriate Elaborator