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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.util.Comparator 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.util.Comparator collator)
throws XPathException
| Method Detail |
public AtomicValue getCurrentGroupingKey()
GroupIterator
getCurrentGroupingKey in interface GroupIteratorpublic SequenceIterator iterateCurrentGroup()
GroupIterator
iterateCurrentGroup in interface GroupIteratorpublic boolean hasNext()
LookaheadIterator
hasNext in interface LookaheadIterator
public Item next()
throws XPathException
SequenceIterator
next in interface SequenceIteratorXPathException - if an error occurs retrieving the next itempublic Item current()
SequenceIterator
current in interface SequenceIteratorpublic int position()
SequenceIterator
position in interface SequenceIterator
public SequenceIterator getAnother()
throws XPathException
SequenceIterator
getAnother in interface SequenceIteratorXPathException - if any error occurs
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