Java Code Examples for com.sun.org.apache.xml.internal.dtm.DTMIterator#nextNode()

/**
 * Execute the function.  The function must return
 * a valid object.
 * @param xctxt The current execution context.
 * @return A valid XObject.
 *
 * @throws javax.xml.transform.TransformerException
 */
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
{

  DTMIterator nodes = m_arg0.asIterator(xctxt, xctxt.getCurrentNode());
  double sum = 0.0;
  int pos;

  while (DTM.NULL != (pos = nodes.nextNode()))
  {
    DTM dtm = nodes.getDTM(pos);
    XMLString s = dtm.getStringValue(pos);

    if (null != s)
      sum += s.toDouble();
  }
  nodes.detach();

  return new XNumber(sum);
}
 

/**
 * Execute the function.  The function must return
 * a valid object.
 * @param xctxt The current execution context.
 * @return A valid XObject.
 *
 * @throws javax.xml.transform.TransformerException
 */
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
{

  DTMIterator nodes = m_arg0.asIterator(xctxt, xctxt.getCurrentNode());
  double sum = 0.0;
  int pos;

  while (DTM.NULL != (pos = nodes.nextNode()))
  {
    DTM dtm = nodes.getDTM(pos);
    XMLString s = dtm.getStringValue(pos);

    if (null != s)
      sum += s.toDouble();
  }
  nodes.detach();

  return new XNumber(sum);
}
 

/**
 * Initialize the context values for this expression
 * after it is cloned.
 *
 * @param context The XPath runtime context for this
 * transformation.
 */
public void setRoot(int context, Object environment)
{
  super.setRoot(context, environment);

  try
  {
    if (null != m_exprs)
    {
      int n = m_exprs.length;
      DTMIterator newIters[] = new DTMIterator[n];

      for (int i = 0; i < n; i++)
      {
        DTMIterator iter = m_exprs[i].asIterator(m_execContext, context);
        newIters[i] = iter;
        iter.nextNode();
      }
      m_iterators = newIters;
    }
  }
  catch(Exception e)
  {
    throw new com.sun.org.apache.xml.internal.utils.WrappedRuntimeException(e);
  }
}
 

/**
 * Initialize the context values for this expression
 * after it is cloned.
 *
 * @param context The XPath runtime context for this
 * transformation.
 */
public void setRoot(int context, Object environment)
{
  super.setRoot(context, environment);

  try
  {
    if (null != m_exprs)
    {
      int n = m_exprs.length;
      DTMIterator newIters[] = new DTMIterator[n];

      for (int i = 0; i < n; i++)
      {
        DTMIterator iter = m_exprs[i].asIterator(m_execContext, context);
        newIters[i] = iter;
        iter.nextNode();
      }
      m_iterators = newIters;
    }
  }
  catch(Exception e)
  {
    throw new com.sun.org.apache.xml.internal.utils.WrappedRuntimeException(e);
  }
}
 

/**
 * Initialize the context values for this expression
 * after it is cloned.
 *
 * @param context The XPath runtime context for this
 * transformation.
 */
public void setRoot(int context, Object environment)
{
  super.setRoot(context, environment);

  try
  {
    if (null != m_exprs)
    {
      int n = m_exprs.length;
      DTMIterator newIters[] = new DTMIterator[n];

      for (int i = 0; i < n; i++)
      {
        DTMIterator iter = m_exprs[i].asIterator(m_execContext, context);
        newIters[i] = iter;
        iter.nextNode();
      }
      m_iterators = newIters;
    }
  }
  catch(Exception e)
  {
    throw new com.sun.org.apache.xml.internal.utils.WrappedRuntimeException(e);
  }
}
 

/**
 * Execute the function.  The function must return
 * a valid object.
 * @param xctxt The current execution context.
 * @return A valid XObject.
 *
 * @throws javax.xml.transform.TransformerException
 */
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
{

  DTMIterator nodes = m_arg0.asIterator(xctxt, xctxt.getCurrentNode());
  double sum = 0.0;
  int pos;

  while (DTM.NULL != (pos = nodes.nextNode()))
  {
    DTM dtm = nodes.getDTM(pos);
    XMLString s = dtm.getStringValue(pos);

    if (null != s)
      sum += s.toDouble();
  }
  nodes.detach();

  return new XNumber(sum);
}
 

/**
 * Initialize the context values for this expression
 * after it is cloned.
 *
 * @param context The XPath runtime context for this
 * transformation.
 */
public void setRoot(int context, Object environment)
{
  super.setRoot(context, environment);

  try
  {
    if (null != m_exprs)
    {
      int n = m_exprs.length;
      DTMIterator newIters[] = new DTMIterator[n];

      for (int i = 0; i < n; i++)
      {
        DTMIterator iter = m_exprs[i].asIterator(m_execContext, context);
        newIters[i] = iter;
        iter.nextNode();
      }
      m_iterators = newIters;
    }
  }
  catch(Exception e)
  {
    throw new com.sun.org.apache.xml.internal.utils.WrappedRuntimeException(e);
  }
}
 

/**
 * Test a node to see if it matches the given node test.
 *
 * @param xctxt XPath runtime context.
 *
 * @return {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NODETEST},
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NONE},
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NSWILD},
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_QNAME}, or
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_OTHER}.
 *
 * @throws javax.xml.transform.TransformerException
 */
public XObject execute(XPathContext xctxt)
        throws javax.xml.transform.TransformerException
{

  int context = xctxt.getCurrentNode();
  DTMIterator nl = m_functionExpr.asIterator(xctxt, context);
  XNumber score = SCORE_NONE;

  if (null != nl)
  {
    int n;

    while (DTM.NULL != (n = nl.nextNode()))
    {
      score = (n == context) ? SCORE_OTHER : SCORE_NONE;

      if (score == SCORE_OTHER)
      {
        context = n;

        break;
      }
    }

    nl.detach();
  }

  return score;
}
 

/**
 * Copy NodeList members into this nodelist, adding in
 * document order.  If a node is null, don't add it.
 *
 * @param iterator DTMIterator which yields the nodes to be added.
 * @param support The XPath runtime context.
 * @throws RuntimeException thrown if this NodeSetDTM is not of
 * a mutable type.
 */
public void addNodesInDocOrder(DTMIterator iterator, XPathContext support)
{

  if (!m_mutable)
    throw new RuntimeException(XSLMessages.createXPATHMessage(XPATHErrorResources.ER_NODESETDTM_NOT_MUTABLE, null)); //"This NodeSetDTM is not mutable!");

  int node;

  while (DTM.NULL != (node = iterator.nextNode()))
  {
    addNodeInDocOrder(node, support);
  }
}
 

/**
 * Test a node to see if it matches the given node test.
 *
 * @param xctxt XPath runtime context.
 *
 * @return {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NODETEST},
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NONE},
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NSWILD},
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_QNAME}, or
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_OTHER}.
 *
 * @throws javax.xml.transform.TransformerException
 */
public XObject execute(XPathContext xctxt, int context,
                       DTM dtm, int expType)
        throws javax.xml.transform.TransformerException
{

  DTMIterator nl = m_functionExpr.asIterator(xctxt, context);
  XNumber score = SCORE_NONE;

  if (null != nl)
  {
    int n;

    while (DTM.NULL != (n = nl.nextNode()))
    {
      score = (n == context) ? SCORE_OTHER : SCORE_NONE;

      if (score == SCORE_OTHER)
      {
        context = n;

        break;
      }
    }

    nl.detach();
  }

  return score;
}
 

/**
 * Test a node to see if it matches the given node test.
 *
 * @param xctxt XPath runtime context.
 *
 * @return {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NODETEST},
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NONE},
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NSWILD},
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_QNAME}, or
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_OTHER}.
 *
 * @throws javax.xml.transform.TransformerException
 */
public XObject execute(XPathContext xctxt, int context,
                       DTM dtm, int expType)
        throws javax.xml.transform.TransformerException
{

  DTMIterator nl = m_functionExpr.asIterator(xctxt, context);
  XNumber score = SCORE_NONE;

  if (null != nl)
  {
    int n;

    while (DTM.NULL != (n = nl.nextNode()))
    {
      score = (n == context) ? SCORE_OTHER : SCORE_NONE;

      if (score == SCORE_OTHER)
      {
        context = n;

        break;
      }
    }

    nl.detach();
  }

  return score;
}
 

/**
 * Copy NodeList members into this nodelist, adding in
 * document order.  If a node is null, don't add it.
 *
 * @param iterator DTMIterator which yields the nodes to be added.
 * @param support The XPath runtime context.
 * @throws RuntimeException thrown if this NodeSetDTM is not of
 * a mutable type.
 */
public void addNodesInDocOrder(DTMIterator iterator, XPathContext support)
{

  if (!m_mutable)
    throw new RuntimeException(XSLMessages.createXPATHMessage(XPATHErrorResources.ER_NODESETDTM_NOT_MUTABLE, null)); //"This NodeSetDTM is not mutable!");

  int node;

  while (DTM.NULL != (node = iterator.nextNode()))
  {
    addNodeInDocOrder(node, support);
  }
}
 

/**
 * Return the first node out of the nodeset, if this expression is
 * a nodeset expression.  This is the default implementation for
 * nodesets.  Derived classes should try and override this and return a
 * value without having to do a clone operation.
 * @param xctxt The XPath runtime context.
 * @return the first node out of the nodeset, or DTM.NULL.
 */
public int asNode(XPathContext xctxt)
  throws javax.xml.transform.TransformerException
{
  DTMIterator iter = m_clones.getInstance();

  int current = xctxt.getCurrentNode();

  iter.setRoot(current, xctxt);

  int next = iter.nextNode();
  // m_clones.freeInstance(iter);
  iter.detach();
  return next;
}
 

/**
 * Test a node to see if it matches the given node test.
 *
 * @param xctxt XPath runtime context.
 *
 * @return {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NODETEST},
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NONE},
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NSWILD},
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_QNAME}, or
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_OTHER}.
 *
 * @throws javax.xml.transform.TransformerException
 */
public XObject execute(XPathContext xctxt, int context,
                       DTM dtm, int expType)
        throws javax.xml.transform.TransformerException
{

  DTMIterator nl = m_functionExpr.asIterator(xctxt, context);
  XNumber score = SCORE_NONE;

  if (null != nl)
  {
    int n;

    while (DTM.NULL != (n = nl.nextNode()))
    {
      score = (n == context) ? SCORE_OTHER : SCORE_NONE;

      if (score == SCORE_OTHER)
      {
        context = n;

        break;
      }
    }

    nl.detach();
  }

  return score;
}
 

/**
 * Get the position in the current context node list.
 *
 * @param xctxt Runtime XPath context.
 *
 * @return The current position of the itteration in the context node list,
 *         or -1 if there is no active context node list.
 */
public int getPositionInContextNodeList(XPathContext xctxt)
{

  // System.out.println("FuncPosition- entry");
  // If we're in a predicate, then this will return non-null.
  SubContextList iter = m_isTopLevel ? null : xctxt.getSubContextList();

  if (null != iter)
  {
    int prox = iter.getProximityPosition(xctxt);

    // System.out.println("FuncPosition- prox: "+prox);
    return prox;
  }

  DTMIterator cnl = xctxt.getContextNodeList();

  if (null != cnl)
  {
    int n = cnl.getCurrentNode();
    if(n == DTM.NULL)
    {
      if(cnl.getCurrentPos() == 0)
        return 0;

      // Then I think we're in a sort.  See sort21.xsl. So the iterator has
      // already been spent, and is not on the node we're processing.
      // It's highly possible that this is an issue for other context-list
      // functions.  Shouldn't be a problem for last(), and it shouldn't be
      // a problem for current().
      try
      {
        cnl = cnl.cloneWithReset();
      }
      catch(CloneNotSupportedException cnse)
      {
        throw new com.sun.org.apache.xml.internal.utils.WrappedRuntimeException(cnse);
      }
      int currentNode = xctxt.getContextNode();
      // System.out.println("currentNode: "+currentNode);
      while(DTM.NULL != (n = cnl.nextNode()))
      {
        if(n == currentNode)
          break;
      }
    }
    // System.out.println("n: "+n);
    // System.out.println("FuncPosition- cnl.getCurrentPos(): "+cnl.getCurrentPos());
    return cnl.getCurrentPos();
  }

  // System.out.println("FuncPosition - out of guesses: -1");
  return -1;
}
 

/**
 * Get the position in the current context node list.
 *
 * @param xctxt Runtime XPath context.
 *
 * @return The current position of the itteration in the context node list,
 *         or -1 if there is no active context node list.
 */
public int getPositionInContextNodeList(XPathContext xctxt)
{

  // System.out.println("FuncPosition- entry");
  // If we're in a predicate, then this will return non-null.
  SubContextList iter = m_isTopLevel ? null : xctxt.getSubContextList();

  if (null != iter)
  {
    int prox = iter.getProximityPosition(xctxt);

    // System.out.println("FuncPosition- prox: "+prox);
    return prox;
  }

  DTMIterator cnl = xctxt.getContextNodeList();

  if (null != cnl)
  {
    int n = cnl.getCurrentNode();
    if(n == DTM.NULL)
    {
      if(cnl.getCurrentPos() == 0)
        return 0;

      // Then I think we're in a sort.  See sort21.xsl. So the iterator has
      // already been spent, and is not on the node we're processing.
      // It's highly possible that this is an issue for other context-list
      // functions.  Shouldn't be a problem for last(), and it shouldn't be
      // a problem for current().
      try
      {
        cnl = cnl.cloneWithReset();
      }
      catch(CloneNotSupportedException cnse)
      {
        throw new com.sun.org.apache.xml.internal.utils.WrappedRuntimeException(cnse);
      }
      int currentNode = xctxt.getContextNode();
      // System.out.println("currentNode: "+currentNode);
      while(DTM.NULL != (n = cnl.nextNode()))
      {
        if(n == currentNode)
          break;
      }
    }
    // System.out.println("n: "+n);
    // System.out.println("FuncPosition- cnl.getCurrentPos(): "+cnl.getCurrentPos());
    return cnl.getCurrentPos();
  }

  // System.out.println("FuncPosition - out of guesses: -1");
  return -1;
}
 

/**
 * Get the position in the current context node list.
 *
 * @param xctxt Runtime XPath context.
 *
 * @return The current position of the itteration in the context node list,
 *         or -1 if there is no active context node list.
 */
public int getPositionInContextNodeList(XPathContext xctxt)
{

  // System.out.println("FuncPosition- entry");
  // If we're in a predicate, then this will return non-null.
  SubContextList iter = m_isTopLevel ? null : xctxt.getSubContextList();

  if (null != iter)
  {
    int prox = iter.getProximityPosition(xctxt);

    // System.out.println("FuncPosition- prox: "+prox);
    return prox;
  }

  DTMIterator cnl = xctxt.getContextNodeList();

  if (null != cnl)
  {
    int n = cnl.getCurrentNode();
    if(n == DTM.NULL)
    {
      if(cnl.getCurrentPos() == 0)
        return 0;

      // Then I think we're in a sort.  See sort21.xsl. So the iterator has
      // already been spent, and is not on the node we're processing.
      // It's highly possible that this is an issue for other context-list
      // functions.  Shouldn't be a problem for last(), and it shouldn't be
      // a problem for current().
      try
      {
        cnl = cnl.cloneWithReset();
      }
      catch(CloneNotSupportedException cnse)
      {
        throw new com.sun.org.apache.xml.internal.utils.WrappedRuntimeException(cnse);
      }
      int currentNode = xctxt.getContextNode();
      // System.out.println("currentNode: "+currentNode);
      while(DTM.NULL != (n = cnl.nextNode()))
      {
        if(n == currentNode)
          break;
      }
    }
    // System.out.println("n: "+n);
    // System.out.println("FuncPosition- cnl.getCurrentPos(): "+cnl.getCurrentPos());
    return cnl.getCurrentPos();
  }

  // System.out.println("FuncPosition - out of guesses: -1");
  return -1;
}
 

/**
 * Get the position in the current context node list.
 *
 * @param xctxt Runtime XPath context.
 *
 * @return The current position of the itteration in the context node list,
 *         or -1 if there is no active context node list.
 */
public int getPositionInContextNodeList(XPathContext xctxt)
{

  // System.out.println("FuncPosition- entry");
  // If we're in a predicate, then this will return non-null.
  SubContextList iter = m_isTopLevel ? null : xctxt.getSubContextList();

  if (null != iter)
  {
    int prox = iter.getProximityPosition(xctxt);

    // System.out.println("FuncPosition- prox: "+prox);
    return prox;
  }

  DTMIterator cnl = xctxt.getContextNodeList();

  if (null != cnl)
  {
    int n = cnl.getCurrentNode();
    if(n == DTM.NULL)
    {
      if(cnl.getCurrentPos() == 0)
        return 0;

      // Then I think we're in a sort.  See sort21.xsl. So the iterator has
      // already been spent, and is not on the node we're processing.
      // It's highly possible that this is an issue for other context-list
      // functions.  Shouldn't be a problem for last(), and it shouldn't be
      // a problem for current().
      try
      {
        cnl = cnl.cloneWithReset();
      }
      catch(CloneNotSupportedException cnse)
      {
        throw new com.sun.org.apache.xml.internal.utils.WrappedRuntimeException(cnse);
      }
      int currentNode = xctxt.getContextNode();
      // System.out.println("currentNode: "+currentNode);
      while(DTM.NULL != (n = cnl.nextNode()))
      {
        if(n == currentNode)
          break;
      }
    }
    // System.out.println("n: "+n);
    // System.out.println("FuncPosition- cnl.getCurrentPos(): "+cnl.getCurrentPos());
    return cnl.getCurrentPos();
  }

  // System.out.println("FuncPosition - out of guesses: -1");
  return -1;
}
 

/**
 * Return the first node out of the nodeset, if this expression is
 * a nodeset expression.
 * @param xctxt The XPath runtime context.
 * @return the first node out of the nodeset, or DTM.NULL.
 *
 * @throws javax.xml.transform.TransformerException
 */
public int asNode(XPathContext xctxt)
        throws javax.xml.transform.TransformerException
{
      DTMIterator iter = execute(xctxt).iter();
  return iter.nextNode();
}
 

/**
 * Return the first node out of the nodeset, if this expression is
 * a nodeset expression.
 * @param xctxt The XPath runtime context.
 * @return the first node out of the nodeset, or DTM.NULL.
 *
 * @throws javax.xml.transform.TransformerException
 */
public int asNode(XPathContext xctxt)
        throws javax.xml.transform.TransformerException
{
      DTMIterator iter = execute(xctxt).iter();
  return iter.nextNode();
}