package client.net.sf.saxon.ce.expr.sort;
import client.net.sf.saxon.ce.expr.XPathContext;
import client.net.sf.saxon.ce.om.NodeInfo;
import client.net.sf.saxon.ce.om.SequenceIterator;
import client.net.sf.saxon.ce.pattern.Pattern;
import client.net.sf.saxon.ce.trans.XPathException;
import java.util.ArrayList;
/**
* A GroupEndingIterator iterates over a sequence of groups defined by
* xsl:for-each-group group-ending-with="x". The groups are returned in
* order of first appearance.
*/
public class GroupEndingIterator extends GroupMatchingIterator implements GroupIterator {
public GroupEndingIterator(SequenceIterator population, Pattern endPattern,
XPathContext context)
throws XPathException {
this.population = population;
this.pattern = endPattern;
baseContext = context;
runningContext = context.newMinorContext();
runningContext.setCurrentIterator(population);
// the first item in the population always starts a new group
next = population.next();
}
protected void advance() throws XPathException {
currentMembers = new ArrayList(20);
currentMembers.add(current);
next = current;
while (next != null) {
if (pattern.matches((NodeInfo)next, runningContext)) {
next = population.next();
if (next != null) {
break;
}
} else {
next = population.next();
if (next != null) {
currentMembers.add(next);
}
}
}
}
public SequenceIterator getAnother() throws XPathException {
return new GroupEndingIterator(population.getAnother(), pattern, baseContext);
}
}
// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// This Source Code Form is “Incompatible With Secondary Licenses”, as defined by the Mozilla Public License, v. 2.0.