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java.lang.Object | +--net.sf.saxon.sort.GroupAdjacentIterator
A GroupAdjacentIterator iterates over a sequence of groups defined by xsl:for-each-group group-adjacent="x". The groups are returned in order of first appearance.
Constructor Summary | |
GroupAdjacentIterator(SequenceIterator population,
Expression keyExpression,
XPathContext keyContext,
java.text.Collator collator)
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Method Summary | |
Item |
current()
Get the current value in the sequence (the one returned by the most recent call on next()). |
SequenceIterator |
getAnother()
Get another SequenceIterator that iterates over the same items as the original, but which is repositioned at the start of the sequence. |
AtomicValue |
getCurrentGroupingKey()
Get the grouping key of the current group |
boolean |
hasNext()
Determine whether there are more items to come. |
SequenceIterator |
iterateCurrentGroup()
Get an iterator over the members of the current group, in population order. |
Item |
next()
Get the next item in the sequence. |
int |
position()
Get the current position. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public GroupAdjacentIterator(SequenceIterator population, Expression keyExpression, XPathContext keyContext, java.text.Collator collator) throws XPathException
Method Detail |
public AtomicValue getCurrentGroupingKey()
GroupIterator
getCurrentGroupingKey
in interface GroupIterator
public SequenceIterator iterateCurrentGroup()
GroupIterator
iterateCurrentGroup
in interface GroupIterator
public boolean hasNext()
LookaheadIterator
hasNext
in interface LookaheadIterator
public Item next() throws XPathException
SequenceIterator
next
in interface SequenceIterator
XPathException
- if an error occurs retrieving the next itempublic Item current()
SequenceIterator
current
in interface SequenceIterator
public int position()
SequenceIterator
position
in interface SequenceIterator
public SequenceIterator getAnother() throws XPathException
SequenceIterator
getAnother
in interface SequenceIterator
XPathException
- if any error occurs
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