@Override
public void verify() throws TransformException {
ItemList targets = mod.nearest(NodeTarget.class).targets();
List<Node> references = mod.references();
ItemList records = mod.supplementQuery().all("sort-proxy");
assert targets.size() == references.size();
assert records.size() == references.size();
for (int i = 0; i < targets.size(); i++) {
Node target = targets.get(i).node();
Node restoredProxy = references.get(i);
ItemList items = query.runOn(mod.scope(target.query()));
if (items.size() != 1)
throw new TransformException(
"sort by corresponding node must select one node per target, but instead selected "
+ items.size()
+ ": "
+ items);
Node proxy = items.get(0).node();
if (!restoredProxy.equals(proxy)) throw new TransformException("computed proxy changed");
if (!proxy
.query()
.single(
"(count(preceding::*) + count(ancestor::*)) eq xs:integer($_1/@position)",
records.get(i))
.booleanValue()) throw new SortingException("computed proxy moved");
}
}
@Override
public void restore() throws TransformException {
ItemList runLengths = mod.supplementQuery().all("sort-siblings/@run-length");
ItemList targets = mod.nearest(NodeTarget.class).targets();
assert runLengths.size() == targets.size();
for (int i = 0, j = 0; i < targets.size(); i++) {
int runLength = runLengths.get(i).intValue();
siblingsByTarget.add(
Pair.of(targets.get(i).node(), mod.references().subList(j, j + runLength)));
j += runLength;
}
}
@Override
public void restore() throws TransformException {
ItemList targets = mod.nearest(NodeTarget.class).targets();
values = new ArrayList<Pair<String, Item>>(targets.size());
for (Node node : targets.nodes()) {
ItemList items = query.runOn(mod.scope(node.query()));
if (items.size() != 1)
throw new TransformException(
"sort by value query did not select exactly one item: " + items);
values.add(Pair.of(node.query().single("@xml:id").value(), items.get(0).toAtomicItem()));
}
}
@Override
void resolveOrder(Mod.Builder modBuilder, Node node) throws TransformException {
ItemList items = query.runOn(modBuilder.customScope(node.query()));
if (items.size() != 1)
throw new TransformException(
"sort by value must select one value per target, but instead selected "
+ items.size()
+ ": "
+ items);
modBuilder
.supplement()
.elem("sort-value")
.attr("refid", node.query().single("@xml:id").value())
.text(items.get(0).value())
.end("sort-value");
}
@Override
void resolveOrder(Mod.Builder modBuilder, Node node) throws TransformException {
// TODO: see if we can resolve /id in global scope while keeping node context
ItemList items = query.runOn(modBuilder.customScope(node.query()));
if (items.size() != 1)
throw new TransformException(
"sort by corresponding node must select one node per target, but instead selected "
+ items.size()
+ ": "
+ items);
Node proxy = items.get(0).node();
modBuilder.reference(proxy);
modBuilder
.supplement()
.elem("sort-proxy")
.attr(
"position", proxy.query().single("count(preceding::*) + count(ancestor::*)").value())
.end("sort-proxy");
}
@Override
void resolveOrder(Mod.Builder modBuilder, Node node) throws TransformException {
ItemList siblings = query.runOn(modBuilder.customScope(node.query().single("..").query()));
for (Node sibling : siblings.nodes()) {
if (!node.query().single(".. is $_1/..", sibling).booleanValue())
throw new TransformException("query selected non-sibling node: " + sibling);
modBuilder.reference(sibling);
}
modBuilder
.supplement()
.elem("sort-siblings")
.attr("run-length", siblings.size())
.end("sort-siblings");
}