private static byte GetAxisNumber(XdmAxis axis)
{
switch (axis)
{
case XdmAxis.Ancestor: return(Axis.ANCESTOR);
case XdmAxis.AncestorOrSelf: return(Axis.ANCESTOR_OR_SELF);
case XdmAxis.Attribute: return(Axis.ATTRIBUTE);
case XdmAxis.Child: return(Axis.CHILD);
case XdmAxis.Descendant: return(Axis.DESCENDANT);
case XdmAxis.DescendantOrSelf: return(Axis.DESCENDANT_OR_SELF);
case XdmAxis.Following: return(Axis.FOLLOWING);
case XdmAxis.FollowingSibling: return(Axis.FOLLOWING_SIBLING);
case XdmAxis.Namespace: return(Axis.NAMESPACE);
case XdmAxis.Parent: return(Axis.PARENT);
case XdmAxis.Preceding: return(Axis.PRECEDING);
case XdmAxis.PrecedingSibling: return(Axis.PRECEDING_SIBLING);
case XdmAxis.Self: return(Axis.SELF);
}
return(0);
}
bool MoveTo(XdmAxis axis)
{
IEnumerator en = this.currentNode.EnumerateAxis(axis);
if (en.MoveNext())
{
this.currentNode = (XdmNode)en.Current;
switch (axis)
{
case XdmAxis.Attribute:
case XdmAxis.Child:
case XdmAxis.Namespace:
this.currentSequence = en;
break;
default:
this.currentSequence = null;
break;
}
return(true);
}
return(false);
}
/// <summary>
/// Get an enumerator that selects all the nodes on one of the XPath
/// axes, provided they have a given name. The nodes selected are those of the principal
/// node kind (elements for most axes, attributes for the attribute axis, namespace nodes
/// for the namespace axis) whose name matches the name given in the second argument.
/// </summary>
/// <param name="axis">
/// The axis to be navigated, for example <c>XdmAxis.Child</c> for the child axis.
/// </param>
/// <param name="nodeName">
/// The name of the required nodes, for example <c>new QName("", "item")</c> to select
/// nodes with local name "item", in no namespace.
/// </param>
/// <remarks>
/// The nodes are returned in axis order: that is, document order for a forwards
/// axis, reverse document order for a reverse axis.
/// </remarks>
public IEnumerator EnumerateAxis(XdmAxis axis, QName nodeName)
{
int kind;
switch (axis)
{
case XdmAxis.Attribute:
kind = net.sf.saxon.type.Type.ATTRIBUTE;
break;
case XdmAxis.Namespace:
kind = net.sf.saxon.type.Type.NAMESPACE;
break;
default:
kind = net.sf.saxon.type.Type.ELEMENT;
break;
}
NamePool pool = ((NodeInfo)value).getConfiguration().getNamePool();
int nameCode = pool.allocate("", nodeName.Uri, nodeName.LocalName);
NameTest test = new NameTest(kind, nameCode, pool);
return(new SequenceEnumerator(((NodeInfo)value).iterateAxis(GetAxisNumber(axis), test)));
}
/// <summary>
/// Get an enumerator that supplies all the nodes on one of the XPath
/// axes, starting with this node.
/// </summary>
/// <param name="axis">
/// The axis to be navigated, for example <c>XdmAxis.Child</c> for the child axis.
/// </param>
/// <remarks>
/// The nodes are returned in axis order: that is, document order for a forwards
/// axis, reverse document order for a reverse axis.
/// </remarks>
public IEnumerator EnumerateAxis(XdmAxis axis)
{
return(new SequenceEnumerator(((NodeInfo)value).iterateAxis(GetAxisNumber(axis))));
}
bool MoveTo(XdmAxis axis)
{
IEnumerator en = this.currentNode.EnumerateAxis(axis);
if (en.MoveNext()) {
this.currentNode = (XdmNode)en.Current;
switch (axis) {
case XdmAxis.Attribute:
case XdmAxis.Child:
case XdmAxis.Namespace:
this.currentSequence = en;
break;
default:
this.currentSequence = null;
break;
}
return true;
}
return false;
}
/// <summary>
/// Get an enumerator that selects all the nodes on one of the XPath
/// axes, provided they have a given name. The nodes selected are those of the principal
/// node kind (elements for most axes, attributes for the attribute axis, namespace nodes
/// for the namespace axis) whose name matches the name given in the second argument.
/// </summary>
/// <param name="axis">
/// The axis to be navigated, for example <c>XdmAxis.Child</c> for the child axis.
/// </param>
/// <param name="nodeName">
/// The name of the required nodes, for example <c>new QName("", "item")</c> to select
/// nodes with local name "item", in no namespace.
/// </param>
/// <remarks>
/// The nodes are returned in axis order: that is, document order for a forwards
/// axis, reverse document order for a reverse axis.
/// </remarks>
public IEnumerator EnumerateAxis(XdmAxis axis, QName nodeName)
{
int kind;
switch (axis)
{
case XdmAxis.Attribute:
kind = net.sf.saxon.type.Type.ATTRIBUTE;
break;
case XdmAxis.Namespace:
kind = net.sf.saxon.type.Type.NAMESPACE;
break;
default:
kind = net.sf.saxon.type.Type.ELEMENT;
break;
}
NamePool pool = ((NodeInfo)value).getConfiguration().getNamePool();
int nameCode = pool.allocate("", nodeName.Uri, nodeName.LocalName);
NameTest test = new NameTest(kind, nameCode, pool);
return new SequenceEnumerator(((NodeInfo)value).iterateAxis(GetAxisNumber(axis), test));
}
/// <summary>
/// Get an enumerator that supplies all the nodes on one of the XPath
/// axes, starting with this node.
/// </summary>
/// <param name="axis">
/// The axis to be navigated, for example <c>XdmAxis.Child</c> for the child axis.
/// </param>
/// <remarks>
/// The nodes are returned in axis order: that is, document order for a forwards
/// axis, reverse document order for a reverse axis.
/// </remarks>
public IEnumerator EnumerateAxis(XdmAxis axis)
{
return new SequenceEnumerator(((NodeInfo)value).iterateAxis(GetAxisNumber(axis)));
}
private static byte GetAxisNumber(XdmAxis axis)
{
switch (axis)
{
case XdmAxis.Ancestor: return Axis.ANCESTOR;
case XdmAxis.AncestorOrSelf: return Axis.ANCESTOR_OR_SELF;
case XdmAxis.Attribute: return Axis.ATTRIBUTE;
case XdmAxis.Child: return Axis.CHILD;
case XdmAxis.Descendant: return Axis.DESCENDANT;
case XdmAxis.DescendantOrSelf: return Axis.DESCENDANT_OR_SELF;
case XdmAxis.Following: return Axis.FOLLOWING;
case XdmAxis.FollowingSibling: return Axis.FOLLOWING_SIBLING;
case XdmAxis.Namespace: return Axis.NAMESPACE;
case XdmAxis.Parent: return Axis.PARENT;
case XdmAxis.Preceding: return Axis.PRECEDING;
case XdmAxis.PrecedingSibling: return Axis.PRECEDING_SIBLING;
case XdmAxis.Self: return Axis.SELF;
}
return 0;
}
