public void run() throws SaxonApiException {
fine(null, "Running p:viewport " + step.getName());
XProcData data = runtime.getXProcData();
data.openFrame(this);
if (current == null) {
current = new Pipe(runtime);
}
RuntimeValue match = ((Viewport) step).getMatch();
String iport = "#viewport-source";
ReadablePipe vsource = null;
if (inputs.get(iport).size() != 1) {
throw XProcException.dynamicError(3);
} else {
vsource = inputs.get(iport).get(0);
}
XdmNode doc = vsource.read();
if (doc == null || vsource.moreDocuments()) {
throw XProcException.dynamicError(3);
}
matcher = new ProcessMatch(runtime, this);
// FIXME: Only do this if we really need to!
sequenceLength = matcher.count(doc, match, false);
runtime.getXProcData().setIterationSize(sequenceLength);
matcher.match(doc, match);
for (String port : inputs.keySet()) {
if (port.startsWith("|")) {
String wport = port.substring(1);
WritablePipe pipe = outputs.get(wport);
XdmNode result = matcher.getResult();
pipe.write(result);
finest(step.getNode(), "Viewport output copy from matcher to " + pipe);
}
}
}
public boolean processStartElement(XdmNode node) {
// Use a TreeWriter to make the matching node into a proper document
TreeWriter treeWriter = new TreeWriter(runtime);
treeWriter.startDocument(node.getBaseURI());
treeWriter.addSubtree(node);
treeWriter.endDocument();
current.resetWriter();
current.write(treeWriter.getResult());
finest(step.getNode(), "Viewport copy matching node to " + current);
sequencePosition++;
runtime.getXProcData().setIterationPosition(sequencePosition);
// Calculate all the variables
inScopeOptions = parent.getInScopeOptions();
for (Variable var : step.getVariables()) {
RuntimeValue value = computeValue(var);
if ("p3".equals(var.getName().getLocalName())) {
System.err.println("DEBUG ME1: " + value.getString());
}
inScopeOptions.put(var.getName(), value);
}
try {
for (XStep step : subpipeline) {
step.reset();
step.run();
}
} catch (SaxonApiException sae) {
throw new XProcException(sae);
}
try {
int count = 0;
for (String port : inputs.keySet()) {
if (port.startsWith("|")) {
for (ReadablePipe reader : inputs.get(port)) {
while (reader.moreDocuments()) {
count++;
if (count > 1) {
XOutput output = getOutput(port.substring(1));
if (!output.getSequence()) {
throw XProcException.dynamicError(7);
}
}
XdmNode doc = reader.read();
matcher.addSubtree(doc);
}
reader.resetReader();
}
}
}
} catch (SaxonApiException sae) {
throw new XProcException(sae);
}
return false;
}