예제 #1
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  /**
   * Create a OneStepIterator object.
   *
   * @param compiler A reference to the Compiler that contains the op map.
   * @param opPos The position within the op map, which contains the location path expression for
   *     this itterator.
   * @throws javax.xml.transform.TransformerException
   */
  OneStepIterator(Compiler compiler, int opPos, int analysis)
      throws javax.xml.transform.TransformerException {
    super(compiler, opPos, analysis);
    int firstStepPos = compiler.getFirstChildPos(opPos);

    m_axis = WalkerFactory.getAxisFromStep(compiler, firstStepPos);
  }
예제 #2
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  /**
   * Create a UnionPathIterator object, including creation of location path iterators from the
   * opcode list, and call back into the Compiler to create predicate expressions.
   *
   * @param compiler The Compiler which is creating this expression.
   * @param opPos The position of this iterator in the opcode list from the compiler.
   * @throws javax.xml.transform.TransformerException
   */
  public UnionPathIterator(Compiler compiler, int opPos)
      throws javax.xml.transform.TransformerException {

    super();

    opPos = compiler.getFirstChildPos(opPos);

    loadLocationPaths(compiler, opPos, 0);
  }
예제 #3
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  /**
   * Create a WalkingIterator iterator, including creation of step walkers from the opcode list, and
   * call back into the Compiler to create predicate expressions.
   *
   * @param compiler The Compiler which is creating this expression.
   * @param opPos The position of this iterator in the opcode list from the compiler.
   * @param shouldLoadWalkers True if walkers should be loaded, or false if this is a derived
   *     iterator and it doesn't wish to load child walkers.
   * @throws javax.xml.transform.TransformerException
   */
  WalkingIterator(Compiler compiler, int opPos, int analysis, boolean shouldLoadWalkers)
      throws javax.xml.transform.TransformerException {
    super(compiler, opPos, analysis, shouldLoadWalkers);

    int firstStepPos = compiler.getFirstChildPos(opPos);

    if (shouldLoadWalkers) {
      m_firstWalker = WalkerFactory.loadWalkers(this, compiler, firstStepPos, 0);
      m_lastUsedWalker = m_firstWalker;
    }
  }