Java Code Examples for com.sun.org.apache.xpath.internal.objects.XString#EMPTYSTRING

/**
 * 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
{

  int context = getArg0AsNode(xctxt);
  XObject val;

  if (DTM.NULL != context)
  {
    DTM dtm = xctxt.getDTM(context);
    String qname = dtm.getNodeNameX(context);
    val = (null == qname) ? XString.EMPTYSTRING : new XString(qname);
  }
  else
  {
    val = XString.EMPTYSTRING;
  }

  return val;
}
 

/**
 * Execute the first argument expression that is expected to return a
 * string.  If the argument is null, then get the string value from the
 * current context node.
 *
 * @param xctxt Runtime XPath context.
 *
 * @return The string value of the first argument, or the string value of the
 *         current context node if the first argument is null.
 *
 * @throws javax.xml.transform.TransformerException if an error occurs while
 *                                   executing the argument expression.
 */
protected XMLString getArg0AsString(XPathContext xctxt)
        throws javax.xml.transform.TransformerException
{
  if(null == m_arg0)
  {
    int currentNode = xctxt.getCurrentNode();
    if(DTM.NULL == currentNode)
      return XString.EMPTYSTRING;
    else
    {
      DTM dtm = xctxt.getDTM(currentNode);
      return dtm.getStringValue(currentNode);
    }

  }
  else
    return m_arg0.execute(xctxt).xstr();
}
 

/**
 * 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
{

  int which = getArg0AsNode(xctxt);

  if (DTM.NULL != which)
  {
    // Note that this is a different value than in previous releases
    // of Xalan. It's sensitive to the exact encoding of the node
    // handle anyway, so fighting to maintain backward compatability
    // really didn't make sense; it may change again as we continue
    // to experiment with balancing document and node numbers within
    // that value.
    return new XString("N" + Integer.toHexString(which).toUpperCase());
  }
  else
    return XString.EMPTYSTRING;
}
 

/**
 * Execute the first argument expression that is expected to return a
 * string.  If the argument is null, then get the string value from the
 * current context node.
 *
 * @param xctxt Runtime XPath context.
 *
 * @return The string value of the first argument, or the string value of the
 *         current context node if the first argument is null.
 *
 * @throws javax.xml.transform.TransformerException if an error occurs while
 *                                   executing the argument expression.
 */
protected XMLString getArg0AsString(XPathContext xctxt)
        throws javax.xml.transform.TransformerException
{
  if(null == m_arg0)
  {
    int currentNode = xctxt.getCurrentNode();
    if(DTM.NULL == currentNode)
      return XString.EMPTYSTRING;
    else
    {
      DTM dtm = xctxt.getDTM(currentNode);
      return dtm.getStringValue(currentNode);
    }

  }
  else
    return m_arg0.execute(xctxt).xstr();
}
 

/**
 * 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
{

  int context = getArg0AsNode(xctxt);
  XObject val;

  if (DTM.NULL != context)
  {
    DTM dtm = xctxt.getDTM(context);
    String qname = dtm.getNodeNameX(context);
    val = (null == qname) ? XString.EMPTYSTRING : new XString(qname);
  }
  else
  {
    val = XString.EMPTYSTRING;
  }

  return val;
}
 

/**
 * 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
{

  int context = getArg0AsNode(xctxt);
  XObject val;

  if (DTM.NULL != context)
  {
    DTM dtm = xctxt.getDTM(context);
    String qname = dtm.getNodeNameX(context);
    val = (null == qname) ? XString.EMPTYSTRING : new XString(qname);
  }
  else
  {
    val = XString.EMPTYSTRING;
  }

  return val;
}
 

/**
 * 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
{

  int which = getArg0AsNode(xctxt);

  if (DTM.NULL != which)
  {
    // Note that this is a different value than in previous releases
    // of Xalan. It's sensitive to the exact encoding of the node
    // handle anyway, so fighting to maintain backward compatability
    // really didn't make sense; it may change again as we continue
    // to experiment with balancing document and node numbers within
    // that value.
    return new XString("N" + Integer.toHexString(which).toUpperCase());
  }
  else
    return XString.EMPTYSTRING;
}
 

/**
 * Execute the first argument expression that is expected to return a
 * string.  If the argument is null, then get the string value from the
 * current context node.
 *
 * @param xctxt Runtime XPath context.
 *
 * @return The string value of the first argument, or the string value of the
 *         current context node if the first argument is null.
 *
 * @throws javax.xml.transform.TransformerException if an error occurs while
 *                                   executing the argument expression.
 */
protected XMLString getArg0AsString(XPathContext xctxt)
        throws javax.xml.transform.TransformerException
{
  if(null == m_arg0)
  {
    int currentNode = xctxt.getCurrentNode();
    if(DTM.NULL == currentNode)
      return XString.EMPTYSTRING;
    else
    {
      DTM dtm = xctxt.getDTM(currentNode);
      return dtm.getStringValue(currentNode);
    }

  }
  else
    return m_arg0.execute(xctxt).xstr();
}
 

/**
 * 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
{

  int context = getArg0AsNode(xctxt);
  if(DTM.NULL == context)
    return XString.EMPTYSTRING;
  DTM dtm = xctxt.getDTM(context);
  String s = (context != DTM.NULL) ? dtm.getLocalName(context) : "";
  if(s.startsWith("#") || s.equals("xmlns"))
    return XString.EMPTYSTRING;

  return new XString(s);
}
 

/**
 * 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
{

  String s1 = m_arg0.execute(xctxt).str();
  String s2 = m_arg1.execute(xctxt).str();
  int index = s1.indexOf(s2);

  return (-1 == index)
         ? XString.EMPTYSTRING : new XString(s1.substring(0, index));
}
 

/**
 * 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
{

  String s1 = m_arg0.execute(xctxt).str();
  String s2 = m_arg1.execute(xctxt).str();
  int index = s1.indexOf(s2);

  return (-1 == index)
         ? XString.EMPTYSTRING : new XString(s1.substring(0, index));
}
 

/**
 * 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
{

  int context = getArg0AsNode(xctxt);

  String s;
  if(context != DTM.NULL)
  {
    DTM dtm = xctxt.getDTM(context);
    int t = dtm.getNodeType(context);
    if(t == DTM.ELEMENT_NODE)
    {
      s = dtm.getNamespaceURI(context);
    }
    else if(t == DTM.ATTRIBUTE_NODE)
    {

      // This function always returns an empty string for namespace nodes.
      // We check for those here.  Fix inspired by Davanum Srinivas.

      s = dtm.getNodeName(context);
      if(s.startsWith("xmlns:") || s.equals("xmlns"))
        return XString.EMPTYSTRING;

      s = dtm.getNamespaceURI(context);
    }
    else
      return XString.EMPTYSTRING;
  }
  else
    return XString.EMPTYSTRING;

  return ((null == s) ? XString.EMPTYSTRING : new XString(s));
}
 

/**
 * 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
{

  int context = getArg0AsNode(xctxt);

  String s;
  if(context != DTM.NULL)
  {
    DTM dtm = xctxt.getDTM(context);
    int t = dtm.getNodeType(context);
    if(t == DTM.ELEMENT_NODE)
    {
      s = dtm.getNamespaceURI(context);
    }
    else if(t == DTM.ATTRIBUTE_NODE)
    {

      // This function always returns an empty string for namespace nodes.
      // We check for those here.  Fix inspired by Davanum Srinivas.

      s = dtm.getNodeName(context);
      if(s.startsWith("xmlns:") || s.equals("xmlns"))
        return XString.EMPTYSTRING;

      s = dtm.getNamespaceURI(context);
    }
    else
      return XString.EMPTYSTRING;
  }
  else
    return XString.EMPTYSTRING;

  return ((null == s) ? XString.EMPTYSTRING : new XString(s));
}
 

/**
 * 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
{

  int context = getArg0AsNode(xctxt);
  if(DTM.NULL == context)
    return XString.EMPTYSTRING;
  DTM dtm = xctxt.getDTM(context);
  String s = (context != DTM.NULL) ? dtm.getLocalName(context) : "";
  if(s.startsWith("#") || s.equals("xmlns"))
    return XString.EMPTYSTRING;

  return new XString(s);
}
 

/**
 * 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
{

  int context = getArg0AsNode(xctxt);

  String s;
  if(context != DTM.NULL)
  {
    DTM dtm = xctxt.getDTM(context);
    int t = dtm.getNodeType(context);
    if(t == DTM.ELEMENT_NODE)
    {
      s = dtm.getNamespaceURI(context);
    }
    else if(t == DTM.ATTRIBUTE_NODE)
    {

      // This function always returns an empty string for namespace nodes.
      // We check for those here.  Fix inspired by Davanum Srinivas.

      s = dtm.getNodeName(context);
      if(s.startsWith("xmlns:") || s.equals("xmlns"))
        return XString.EMPTYSTRING;

      s = dtm.getNamespaceURI(context);
    }
    else
      return XString.EMPTYSTRING;
  }
  else
    return XString.EMPTYSTRING;

  return ((null == s) ? XString.EMPTYSTRING : new XString(s));
}
 

/**
 * 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
{

  int context = getArg0AsNode(xctxt);
  if(DTM.NULL == context)
    return XString.EMPTYSTRING;
  DTM dtm = xctxt.getDTM(context);
  String s = (context != DTM.NULL) ? dtm.getLocalName(context) : "";
  if(s.startsWith("#") || s.equals("xmlns"))
    return XString.EMPTYSTRING;

  return new XString(s);
}
 

/**
 * 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
{

  XMLString s1 = m_arg0.execute(xctxt).xstr();
  XMLString s2 = m_arg1.execute(xctxt).xstr();
  int index = s1.indexOf(s2);

  return (-1 == index)
         ? XString.EMPTYSTRING
         : (XString)s1.substring(index + s2.length());
}
 

/**
 * 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
{

  XMLString s1 = m_arg0.execute(xctxt).xstr();
  XMLString s2 = m_arg1.execute(xctxt).xstr();
  int index = s1.indexOf(s2);

  return (-1 == index)
         ? XString.EMPTYSTRING
         : (XString)s1.substring(index + s2.length());
}
 

/**
 * 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
{

  int context = getArg0AsNode(xctxt);

  String s;
  if(context != DTM.NULL)
  {
    DTM dtm = xctxt.getDTM(context);
    int t = dtm.getNodeType(context);
    if(t == DTM.ELEMENT_NODE)
    {
      s = dtm.getNamespaceURI(context);
    }
    else if(t == DTM.ATTRIBUTE_NODE)
    {

      // This function always returns an empty string for namespace nodes.
      // We check for those here.  Fix inspired by Davanum Srinivas.

      s = dtm.getNodeName(context);
      if(s.startsWith("xmlns:") || s.equals("xmlns"))
        return XString.EMPTYSTRING;

      s = dtm.getNamespaceURI(context);
    }
    else
      return XString.EMPTYSTRING;
  }
  else
    return XString.EMPTYSTRING;

  return ((null == s) ? XString.EMPTYSTRING : new XString(s));
}
 

/**
 * 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
{

  XMLString s1 = m_arg0.execute(xctxt).xstr();
  double start = m_arg1.execute(xctxt).num();
  int lenOfS1 = s1.length();
  XMLString substr;

  if (lenOfS1 <= 0)
    return XString.EMPTYSTRING;
  else
  {
    int startIndex;

    if (Double.isNaN(start))
    {

      // Double.MIN_VALUE doesn't work with math below
      // so just use a big number and hope I never get caught.
      start = -1000000;
      startIndex = 0;
    }
    else
    {
      start = Math.round(start);
      startIndex = (start > 0) ? (int) start - 1 : 0;
    }

    if (null != m_arg2)
    {
      double len = m_arg2.num(xctxt);
      int end = (int) (Math.round(len) + start) - 1;

      // Normalize end index.
      if (end < 0)
        end = 0;
      else if (end > lenOfS1)
        end = lenOfS1;

      if (startIndex > lenOfS1)
        startIndex = lenOfS1;

      substr = s1.substring(startIndex, end);
    }
    else
    {
      if (startIndex > lenOfS1)
        startIndex = lenOfS1;
      substr = s1.substring(startIndex);
    }
  }

  return (XString)substr; // cast semi-safe
}