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.

    
    int docContext = dtm.getDocumentRoot(context);
    XObject arg = (XObject) this.getArg0().execute(xctxt);


    String base = "";
    Expression arg1Expr = this.getArg1();


    if (null != arg1Expr)
    {


      // The URI reference may be relative. The base URI (see [3.2 Base URI]) 
      // of the node in the second argument node-set that is first in document 
      // order is used as the base URI for resolving the 
      // relative URI into an absolute URI. 
      XObject arg2 = arg1Expr.execute(xctxt);


      if (XObject.CLASS_NODESET == arg2.getType())
      {
        int baseNode = arg2.iter().nextNode();

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  MultistepExprHolder head = null;
  MultistepExprHolder tail = null;
  int numPathsFound = 0;
  int n = paths.size();
  
  Expression expr1 = firstOccuranceOwner.getExpression();
  if(DEBUG)
    assertIsLocPathIterator(expr1, firstOccuranceOwner);
  boolean isGlobal = (paths == m_absPaths);
  LocPathIterator lpi = (LocPathIterator)expr1;
  int stepCount = countSteps(lpi);
  for(int j = start; j < n; j++)
  {
    ExpressionOwner owner2 = (ExpressionOwner)paths.elementAt(j);
    if(null != owner2)
    {
      Expression expr2 = owner2.getExpression();
      boolean isEqual = expr2.deepEquals(lpi);
      if(isEqual)
      {      
        LocPathIterator lpi2  = (LocPathIterator)expr2;        
        if(null == head)
        {

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  {
  QName uniquePsuedoVarName = null;
  boolean foundFirst = false;
  int numPathsFound = 0;
  int n = paths.size();
  Expression expr1 = firstOccuranceOwner.getExpression();
  if(DEBUG)
    assertIsLocPathIterator(expr1, firstOccuranceOwner);
  boolean isGlobal = (paths == m_absPaths);
  LocPathIterator lpi = (LocPathIterator)expr1;
  for(int j = start; j < n; j++)
  {
    ExpressionOwner owner2 = (ExpressionOwner)paths.elementAt(j);
    if(null != owner2)
    {
      Expression expr2 = owner2.getExpression();
      boolean isEqual = expr2.deepEquals(lpi);
      if(isEqual)
      {      
        LocPathIterator lpi2  = (LocPathIterator)expr2;        
        if(!foundFirst)
        {

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      WalkingIterator wi = (WalkingIterator)path;
      AxesWalker aw = wi.getFirstWalker();
      if((aw instanceof FilterExprWalker) && (null == aw.getNextWalker()))
      {
        FilterExprWalker few = (FilterExprWalker)aw;
        Expression exp = few.getInnerExpression();
        if(exp instanceof Variable)
          return true;
      }
    }

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          // Just get the select value.
          if(type == Constants.ELEMNAME_FOREACH)
          {
            ElemForEach efe = (ElemForEach) elem;
           
          Expression select = efe.getSelect();
          select.callVisitors(efe, this);
          }
         
        Vector savedPaths = m_paths;
        m_paths = new Vector();

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   *
   * @throws javax.xml.transform.TransformerException
   */
  public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
  {
    Expression expr = ((ElemVariable)m_obj).getSelect().getExpression();
    XObject xobj = expr.execute(xctxt);
    xobj.allowDetachToRelease(false);
    return xobj;
  }

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    if(null != vvar)
    {
      XPath xpath = vvar.getSelect();
      if(null != xpath)
      {
        Expression expr = xpath.getExpression();
        if(null != expr && expr instanceof PathComponent)
        {
          return ((PathComponent)expr).getAnalysisBits();
        }
      }

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    DTMManager dtmMgr = xctxt.getDTMManager();
    int context = xctxt.getContextNode();
    if(dtmMgr.getDTM(xns.getRoot()).getDocument() != 
       dtmMgr.getDTM(context).getDocument())
    {
      Expression expr = (Expression)xns.getContainedIter();
      xns = (XNodeSet)expr.asIterator(xctxt, context);
    }
    return xns;
  }

View Full Code Here

  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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    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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org.apache.xalan.templates.ElemValueOf

org.apache.xalan.templates.FuncDocument

org.apache.xalan.templates.FuncFormatNumb

org.apache.xalan.templates.RedundentExprEliminator

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org.apache.xindice.core.query.XPathQueryResolver$XPathQuery

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