Class BinaryExpression

java.lang.Object
com.icl.saxon.expr.Expression
com.icl.saxon.expr.BinaryExpression
Direct Known Subclasses:
ArithmeticExpression, BooleanExpression, RelationalExpression

abstract class BinaryExpression extends Expression
Binary Expression: a numeric expression consisting of the two operands and an operator
  • Field Details

  • Constructor Details

    • BinaryExpression

      public BinaryExpression()
      Default constructor
    • BinaryExpression

      public BinaryExpression(Expression p1, int op, Expression p2)
      Create a binary expression identifying the two operands and the operator
      Parameters:
      p1 - the left-hand operand
      op - the operator, as a token returned by the Tokenizer (e.g. Tokenizer.AND)
      p2 - the right-hand operand
  • Method Details

    • setDetails

      public void setDetails(Expression p1, int op, Expression p2)
      Identify the two operands and the operator (for use when the default constructor was used)
      Parameters:
      p1 - the left-hand operand
      op - the operator, as a token returned by the Tokenizer (e.g. Tokenizer.AND)
      p2 - the right-hand operand
    • simplify

      public Expression simplify() throws XPathException
      Simplify an expression
      Overrides:
      simplify in class Expression
      Returns:
      the simplified expression
      Throws:
      XPathException
    • getDependencies

      public int getDependencies()
      Determine which aspects of the context the expression depends on. The result is a bitwise-or'ed value composed from constants such as Context.VARIABLES and Context.CURRENT_NODE
      Specified by:
      getDependencies in class Expression
    • display

      public void display(int level)
      Diagnostic print of expression structure
      Specified by:
      display in class Expression