@Override
public void plan(final Serializer ser) throws IOException {
if (func.length == 0) return;
ser.openElement(this);
for (int i = 0; i < func.length; ++i) func[i].plan(ser);
ser.closeElement();
}
@Override
public void plan(final Serializer ser) throws IOException {
ser.openElement(this);
weight.plan(ser);
expr[0].plan(ser);
ser.closeElement();
}
@Override
public void plan(final Serializer ser) throws IOException {
ser.openElement(this);
for (final TypeCase c : cases) c.plan(ser);
ts.plan(ser);
ser.closeElement();
}
@Override
public final void plan(final Serializer ser) throws IOException {
ser.openElement(this);
ser.attribute(AXIS, Token.token(axis.name));
ser.attribute(TEST, Token.token(test.toString()));
super.plan(ser);
ser.closeElement();
}
/**
* Executes a query.
*
* @param query query to be executed
* @return list of serialized result items
* @throws IOException error during query execution
*/
private StringList execute(final WebDAVQuery query) throws IOException {
final ClassLoader cl = getClass().getClassLoader();
final InputStream s = cl.getResourceAsStream(FILE);
if (s == null) throw new IOException("WebDAV module not found");
final byte[] module = new IOStream(s).read();
final QueryProcessor qp = new QueryProcessor(query.toString(), http.context());
try {
for (final Entry<String, Object> entry : query.entries()) {
qp.bind(entry.getKey(), entry.getValue());
}
qp.ctx.parseLibrary(string(module), FILE, qp.sc);
final Result r = qp.execute();
final int n = (int) r.size();
final StringList items = new StringList(n);
for (int i = 0; i < n; i++) {
final ArrayOutput ao = new ArrayOutput();
r.serialize(Serializer.get(ao), 0);
items.add(ao.toString());
}
return items;
} catch (final QueryException ex) {
throw new BaseXException(ex);
} catch (final Exception ex) {
Util.debug(ex);
throw new BaseXException(ex);
} finally {
qp.close();
}
}
/** Saves the displayed text. */
private void save() {
final BaseXFileChooser fc =
new BaseXFileChooser(SAVE_AS, gui.gopts.get(GUIOptions.WORKPATH), gui).suffix(IO.XMLSUFFIX);
final IO file = fc.select(Mode.FSAVE);
if (file == null) return;
gui.gopts.set(GUIOptions.WORKPATH, file.path());
gui.cursor(CURSORWAIT, true);
final MainOptions opts = gui.context.options;
final int mh = opts.get(MainOptions.MAXHITS);
opts.set(MainOptions.MAXHITS, -1);
opts.set(MainOptions.CACHEQUERY, false);
try (final PrintOutput out = new PrintOutput(file.toString())) {
if (cmd != null) {
cmd.execute(gui.context, out);
} else if (ns != null) {
ns.serialize(Serializer.get(out));
} else {
final byte[] txt = text.getText();
for (final byte t : txt) if (t < 0 || t > ' ' || ws(t)) out.write(t);
}
} catch (final IOException ex) {
BaseXDialog.error(gui, Util.info(FILE_NOT_SAVED_X, file));
} finally {
opts.set(MainOptions.MAXHITS, mh);
opts.set(MainOptions.CACHEQUERY, true);
gui.cursor(CURSORARROW, true);
}
}
/**
* Returns a serializer for the given output stream. Optional output declarations within the query
* will be included in the serializer instance.
*
* @param os output stream
* @return serializer instance
* @throws IOException query exception
* @throws QueryException query exception
*/
public Serializer getSerializer(final OutputStream os) throws IOException, QueryException {
compile();
try {
return Serializer.get(os, qc.serParams());
} catch (final QueryIOException ex) {
throw ex.getCause();
}
}
@Override
public void plan(final Serializer ser) throws IOException {
try {
ser.emptyElement(ITM, VAL, atom(null), TYP, Token.token(name()));
} catch (final QueryException ex) {
// only function items throw exceptions in atomization, and they should
// override plan(Serializer) sensibly
Util.notexpected(ex);
}
}
/**
* Sends an event to the registered sessions.
*
* @param ctx query context
* @return event result
* @throws QueryException query exception
*/
private Item event(final QueryContext ctx) throws QueryException {
final byte[] name = checkStr(expr[0], ctx);
final ArrayOutput ao = new ArrayOutput();
try {
// run serialization
final Serializer ser = Serializer.get(ao, ctx.serProp(true));
final ValueIter ir = ctx.value(expr[1]).iter();
for (Item it; (it = ir.next()) != null; ) it.serialize(ser);
ser.close();
} catch (final SerializerException ex) {
throw ex.getCause(input);
} catch (final IOException ex) {
SERANY.thrw(input, ex);
}
// throw exception if event is unknown
if (!ctx.context.events.notify(ctx.context, name, ao.toArray())) {
NOEVENT.thrw(input, name);
}
return null;
}
@Override
public void plan(final Serializer ser) throws IOException {
ser.emptyElement(
this,
DATA,
token(ictx.data.meta.name),
MIN,
token(ind.min),
MAX,
token(ind.max),
TYP,
token(ind.type.toString()));
}
/**
* Serializes the specified nodes.
*
* @param n nodes to display
*/
private void setText(final DBNodes n) {
if (visible()) {
try {
final ArrayOutput ao = new ArrayOutput();
ao.setLimit(gui.gopts.get(GUIOptions.MAXTEXT));
if (n != null) n.serialize(Serializer.get(ao));
setText(ao);
cmd = null;
ns = ao.finished() ? n : null;
} catch (final IOException ex) {
Util.debug(ex);
}
} else {
home.setEnabled(gui.context.data() != null);
}
}
@Override
public void action(final Object comp) {
final String pth = path();
final IOFile io = new IOFile(pth);
String inf = io.isDir() && io.children().length > 0 ? DIR_NOT_EMPTY : null;
ok = !pth.isEmpty();
final SerialMethod mth = SerialMethod.valueOf(method.getSelectedItem());
final OptionsOption<? extends Options> opts =
mth == SerialMethod.JSON
? SerializerOptions.JSON
: mth == SerialMethod.CSV ? SerializerOptions.CSV : null;
final boolean showmparams = opts != null;
mparams.setEnabled(showmparams);
if (ok) {
gui.gopts.set(GUIOptions.INPUTPATH, pth);
try {
if (comp == method) {
if (showmparams) {
final Options mopts = options(null).get(opts);
mparams.setToolTipText(tooltip(mopts));
mparams.setText(mopts.toString());
} else {
mparams.setToolTipText(null);
mparams.setText("");
}
}
Serializer.get(new ArrayOutput(), options(mth));
} catch (final IOException ex) {
ok = false;
inf = ex.getMessage();
}
}
info.setText(inf, ok ? Msg.WARN : Msg.ERROR);
enableOK(buttons, B_OK, ok);
}
/**
* Evaluates the specified query.
*
* @param query query
* @return success flag
*/
final boolean query(final String query) {
final Performance p = new Performance();
String error;
if (exception != null) {
error = Util.message(exception);
} else {
try {
long hits = 0;
final boolean run = options.get(MainOptions.RUNQUERY);
final boolean serial = options.get(MainOptions.SERIALIZE);
final int runs = Math.max(1, options.get(MainOptions.RUNS));
for (int r = 0; r < runs; ++r) {
// reuse existing processor instance
if (r != 0) qp = null;
qp(query, context);
parse(p);
if (r == 0) plan(false);
qp.compile();
info.compiling += p.time();
if (r == 0) plan(true);
if (!run) continue;
final PrintOutput po = r == 0 && serial ? out : new NullOutput();
try (final Serializer ser = qp.getSerializer(po)) {
if (maxResults >= 0) {
result = qp.cache(maxResults);
info.evaluating += p.time();
result.serialize(ser);
hits = result.size();
} else {
hits = 0;
final Iter ir = qp.iter();
info.evaluating += p.time();
for (Item it; (it = ir.next()) != null; ) {
ser.serialize(it);
++hits;
checkStop();
}
}
}
qp.close();
info.serializing += p.time();
}
// dump some query info
// out.flush();
// remove string list if global locking is used and if query is updating
if (soptions.get(StaticOptions.GLOBALLOCK) && qp.updating) {
info.readLocked = null;
info.writeLocked = null;
}
return info(info.toString(qp, out.size(), hits, options.get(MainOptions.QUERYINFO)));
} catch (final QueryException | IOException ex) {
exception = ex;
error = Util.message(ex);
} catch (final ProcException ex) {
error = INTERRUPTED;
} catch (final StackOverflowError ex) {
Util.debug(ex);
error = BASX_STACKOVERFLOW.desc;
} catch (final RuntimeException ex) {
extError("");
Util.debug(info());
throw ex;
} finally {
// close processor after exceptions
if (qp != null) qp.close();
}
}
return extError(error);
}
/**
* Serializes the item.
*
* @param ser serializer
* @throws IOException I/O exception
*/
public void serialize(final Serializer ser) throws IOException {
ser.item(this);
}
/**
* Serializes the path node.
*
* @param ser serializer
* @throws IOException I/O exception
*/
public void plan(final Serializer ser) throws IOException {
ser.openElement(PATH);
root.plan(data, ser);
ser.closeElement();
}
@Override
public void plan(final Serializer ser) throws IOException {
ser.openElement(this, TYP, Token.token(type.toString()));
expr.plan(ser);
ser.closeElement();
}
@Override
public void plan(final Serializer ser) throws IOException {
ser.openElement(this, DATA, token(ictx.data.meta.name));
ftexpr.plan(ser);
ser.closeElement();
}
/**
* Evaluates the specified function and creates a response.
*
* @throws Exception exception (including unexpected ones)
*/
void create() throws Exception {
// bind variables
final StaticFunc sf = function.function;
final Expr[] args = new Expr[sf.args.length];
function.bind(http, args, error);
// wrap function with a function call
final MainModule mm = new MainModule(sf, args);
// assign main module and http context and register process
query.mainModule(mm);
query.http(http);
query.context.register(query);
String redirect = null, forward = null;
RestXqRespBuilder resp = null;
try {
// compile and evaluate query
query.compile();
final Iter iter = query.iter();
Item item = iter.next();
// handle response element
if (item != null && item instanceof ANode) {
final ANode node = (ANode) item;
// send redirect to browser
if (REST_REDIRECT.eq(node)) {
final ANode ch = node.children().next();
if (ch == null || ch.type != NodeType.TXT) throw function.error(NO_VALUE, node.name());
redirect = string(ch.string()).trim();
return;
}
// server-side forwarding
if (REST_FORWARD.eq(node)) {
final ANode ch = node.children().next();
if (ch == null || ch.type != NodeType.TXT) throw function.error(NO_VALUE, node.name());
forward = string(ch.string()).trim();
return;
}
if (REST_RESPONSE.eq(node)) {
resp = new RestXqRespBuilder();
resp.build(node, function, iter, http);
return;
}
}
// HEAD method must return a single response element
if (function.methods.size() == 1 && function.methods.contains(HTTPMethod.HEAD.name()))
throw function.error(HEAD_METHOD);
// serialize result
final SerializerOptions sp = function.output;
http.sopts(sp);
http.initResponse();
final Serializer ser = Serializer.get(http.res.getOutputStream(), sp);
for (; item != null; item = iter.next()) ser.serialize(item);
ser.close();
} finally {
query.close();
query.context.unregister(query);
if (redirect != null) {
http.res.sendRedirect(redirect);
} else if (forward != null) {
http.req.getRequestDispatcher(forward).forward(http.req, http.res);
} else if (resp != null) {
if (resp.status != 0) http.status(resp.status, resp.message, resp.error);
http.res.getOutputStream().write(resp.cache.toArray());
}
}
}
@Override
public void plan(final Serializer ser) throws IOException {
ser.openElement(this, OP, Token.token(calc.name));
for (final Expr e : expr) e.plan(ser);
ser.closeElement();
}
@Override
public void plan(final Serializer ser) throws IOException {
ser.emptyElement(this);
}
