Package com.icl.saxon.style
Class GroupActivation
- java.lang.Object
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- com.icl.saxon.style.GroupActivation
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- All Implemented Interfaces:
NodeEnumeration
public class GroupActivation extends java.lang.Object implements NodeEnumeration
GroupActivation represents one activation of a saxon:group loop. It is implemented as a NodeEnumeration with one extra method, the ability to test whether the value of a key on the current node is the same as the value of the key on the next node. Control over the iteration is shared between the saxon:group and saxon:item elements.
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Constructor Summary
Constructors Constructor Description GroupActivation(SAXONGroup group, Expression groupkey, NodeEnumeration nodes, Context c)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
hasMoreElements()
Determine whether there are more nodes to come.boolean
isPeer()
Determine whether the nodes returned by this enumeration are known to be peers, that is, no node is a descendant or ancestor of another node.boolean
isReverseSorted()
Determine whether the nodes returned by this enumeration are known to be in reverse document order.boolean
isSorted()
Determine whether the nodes returned by this enumeration are known to be in document orderNodeInfo
nextElement()
Get the next node in sequence.boolean
sameAsNext()
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Constructor Detail
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GroupActivation
public GroupActivation(SAXONGroup group, Expression groupkey, NodeEnumeration nodes, Context c) throws XPathException
- Throws:
XPathException
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Method Detail
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hasMoreElements
public boolean hasMoreElements()
Description copied from interface:NodeEnumeration
Determine whether there are more nodes to come.
(Note the term "Element" is used here in the sense of the standard Java Enumeration class, it has nothing to do with XML elements).- Specified by:
hasMoreElements
in interfaceNodeEnumeration
- Returns:
- true if there are more nodes
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nextElement
public NodeInfo nextElement() throws XPathException
Description copied from interface:NodeEnumeration
Get the next node in sequence.
(Note the term "Element" is used here in the sense of the standard Java Enumeration class, it has nothing to do with XML elements).- Specified by:
nextElement
in interfaceNodeEnumeration
- Returns:
- the next NodeInfo
- Throws:
XPathException
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sameAsNext
public boolean sameAsNext() throws XPathException
- Throws:
XPathException
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isSorted
public boolean isSorted()
Description copied from interface:NodeEnumeration
Determine whether the nodes returned by this enumeration are known to be in document order- Specified by:
isSorted
in interfaceNodeEnumeration
- Returns:
- true if the nodes are guaranteed to be in document order.
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isReverseSorted
public boolean isReverseSorted()
Description copied from interface:NodeEnumeration
Determine whether the nodes returned by this enumeration are known to be in reverse document order.- Specified by:
isReverseSorted
in interfaceNodeEnumeration
- Returns:
- true if the nodes are guaranteed to be in document order.
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isPeer
public boolean isPeer()
Description copied from interface:NodeEnumeration
Determine whether the nodes returned by this enumeration are known to be peers, that is, no node is a descendant or ancestor of another node. This significance of this property is that if a peer enumeration is applied to each node in a set derived from another peer enumeration, and if both enumerations are sorted, then the result is also sorted.- Specified by:
isPeer
in interfaceNodeEnumeration
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