Package org.loboevolution.apache.xml.dtm.ref

Class DTMChildIterNodeList

java.lang.Object
org.loboevolution.apache.xml.dtm.ref.DTMNodeListBase
org.loboevolution.apache.xml.dtm.ref.DTMChildIterNodeList
All Implemented Interfaces:
NodeList
public class DTMChildIterNodeList extends DTMNodeListBase
DTMNodeList gives us an implementation of the DOM's NodeList interface wrapped around a DTM Iterator. The author considers this something of an abominations, since NodeList was not intended to be a general purpose "list of nodes" API and is generally considered by the DOM WG to have be a mistake... but I'm told that some of the XPath/XSLT folks say they must have this solution.

Please note that this is not necessarily equivlaent to a DOM NodeList operating over the same document. In particular:

  • If there are several Text nodes in logical succession (ie, across CDATASection and EntityReference boundaries), we will return only the first; the caller is responsible for stepping through them. (%REVIEW% Provide a convenience routine here to assist, pending proposed DOM Level 3 getAdjacentText() operation?)
  • Since the whole XPath/XSLT architecture assumes that the source document is not altered while we're working with it, we do not promise to implement the DOM NodeList's "live view" response to document mutation.

State: In progress!!

  • Constructor Details

    • DTMChildIterNodeList

      public DTMChildIterNodeList(DTM parentDTM, int parentHandle)
      Public constructor: Create a NodeList to support DTMNodeProxy.getChildren().

      Unfortunately AxisIterators and DTMIterators don't share an API, so I can't use the existing Axis.CHILD iterator. Rather than create Yet Another Class, let's set up a special case of this one.

      Parameters:
      parentDTM - The DTM containing this node
      parentHandle - DTM node-handle integer

  • Method Details

    • item

      public Node item(int idx)
      Returns the node with index index from the collection. The nodes are sorted in tree order.
      Specified by:
      item in interface NodeList
      Overrides:
      item in class DTMNodeListBase
      Parameters:
      idx - a Integer object.
      Returns:
      a Node object.

    • getLength

      public int getLength()
      Returns the number of nodes in the collection.
      Specified by:
      getLength in interface NodeList
      Overrides:
      getLength in class DTMNodeListBase
      Returns:
      a Integer object.