NodeInfo.java 文件源码

/**
 * <code>publicId</code> returns the public identifier of the node passed as
 * argument. If a node set is passed as argument, the public identifier of
 * the first node in the set is returned.
 *
 * Xalan does not currently record this value, and will return null.
 *
 * @param nodeList a <code>NodeList</code> value
 * @return a <code>String</code> value
 */
public static String publicId(NodeList nodeList)
{
  if (nodeList == null || nodeList.getLength() == 0)
    return null;

  Node node = nodeList.item(0);
  int nodeHandler = ((DTMNodeProxy)node).getDTMNodeNumber();
  SourceLocator locator = ((DTMNodeProxy)node).getDTM()
    .getSourceLocatorFor(nodeHandler);

  if (locator != null)
    return locator.getPublicId();
  else
    return null;
}