Examples of org.apache.xpath.Expression

org.apache.xpath.Expression
This abstract class serves as the base for all expression objects. An Expression can be executed to return a {@link org.apache.xpath.objects.XObject}, normally has a location within a document or DOM, can send error and warning events, and normally do not hold state and are meant to be immutable once construction has completed. An exception to the immutibility rule is iterators and walkers, which must be cloned in order to be used -- the original must still be immutable.

    case OpCodes.OP_EXTFUNCTION :
    case OpCodes.OP_FUNCTION :
    case OpCodes.OP_GROUP :
      prevIsOneStepDown = false;


      Expression expr;


      switch (stepType)
      {
      case OpCodes.OP_VARIABLE :
      case OpCodes.OP_EXTFUNCTION :

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    {
      int nArgs = m_argVec.size();


      for (int i = 0; i < nArgs; i++)
      {
        Expression arg = (Expression) m_argVec.elementAt(i);


        arg.fixupVariables(vars, globalsSize);
      }
    }
  }

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    Vector argVec = new Vector();
    int nArgs = m_argVec.size();


    for (int i = 0; i < nArgs; i++)
    {
      Expression arg = (Expression) m_argVec.elementAt(i);
      
      XObject xobj = arg.execute(xctxt);


      argVec.addElement(xobj);
    }
    //dml
    ExtensionsProvider extProvider = (ExtensionsProvider)xctxt.getOwnerObject();

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   */
  public void callArgVisitors(XPathVisitor visitor)
  {
      for (int i = 0; i < m_argVec.size(); i++)
      {
         Expression exp = (Expression)m_argVec.elementAt(i);
         exp.callVisitors(new ArgExtOwner(exp), visitor);
      }
    
  }

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    int nArgs = m_argVec.size();


    for (int i = 0; i < nArgs; i++)
    {
      Expression arg = (Expression) m_argVec.elementAt(i);


      arg.exprSetParent(n);
    }    
  }

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    {
      int nArgs = m_argVec.size();


      for (int i = 0; i < nArgs; i++)
      {
        Expression arg = (Expression) m_argVec.elementAt(i);


        arg.fixupVariables(vars, globalsSize);
      }
    }
  }

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    Vector argVec = new Vector();
    int nArgs = m_argVec.size();


    for (int i = 0; i < nArgs; i++)
    {
      Expression arg = (Expression) m_argVec.elementAt(i);
      
      XObject xobj = arg.execute(xctxt);


      argVec.addElement(xobj);
    }
    //dml
    ExtensionsProvider extProvider = (ExtensionsProvider)xctxt.getOwnerObject();

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   */
  public void callArgVisitors(XPathVisitor visitor)
  {
      for (int i = 0; i < m_argVec.size(); i++)
      {
         Expression exp = (Expression)m_argVec.elementAt(i);
         exp.callVisitors(new ArgExtOwner(exp), visitor);
      }
    
  }

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    int nArgs = m_argVec.size();


    for (int i = 0; i < nArgs; i++)
    {
      Expression arg = (Expression) m_argVec.elementAt(i);


      arg.exprSetParent(n);
    }    
  }

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  public Expression compile(int opPos) throws TransformerException
  {


    int op = getOp(opPos);


    Expression expr = null;
    // System.out.println(getPatternString()+"op: "+op);
    switch (op)
    {
    case OpCodes.OP_XPATH :
      expr = compile(opPos + 2); break;

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