Package org.apache.xml.dtm.ref
Class DTMChildIterNodeList
- java.lang.Object
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- org.apache.xml.dtm.ref.DTMNodeListBase
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- org.apache.xml.dtm.ref.DTMChildIterNodeList
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- All Implemented Interfaces:
org.w3c.dom.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!!
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Constructor Summary
Constructors Constructor Description DTMChildIterNodeList(DTM parentDTM, int parentHandle)
Public constructor: Create a NodeList to support DTMNodeProxy.getChildren().
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
getLength()
The number of nodes in the list.org.w3c.dom.Node
item(int index)
Returns theindex
th item in the collection.
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Constructor Detail
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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 nodeparentHandle
- DTM node-handle integer
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Method Detail
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item
public org.w3c.dom.Node item(int index)
Returns theindex
th item in the collection. Ifindex
is greater than or equal to the number of nodes in the list, this returnsnull
.- Specified by:
item
in interfaceorg.w3c.dom.NodeList
- Overrides:
item
in classDTMNodeListBase
- Parameters:
index
- Index into the collection.- Returns:
- The node at the
index
th position in theNodeList
, ornull
if that is not a valid index.
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getLength
public int getLength()
The number of nodes in the list. The range of valid child node indices is 0 tolength-1
inclusive.- Specified by:
getLength
in interfaceorg.w3c.dom.NodeList
- Overrides:
getLength
in classDTMNodeListBase
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