public void evalAsEvents(XMLPushStreamBase output, Focus focus, EvalContext context)
throws EvaluationException {
context.at(this);
QName qname = evalName(output, focus, context);
try {
output.putElementStart(qname);
for (int a = 0; a < attributes.size(); a++) {
try {
getAttribute(a).evalAsEvents(output, focus, context);
} catch (EvaluationException e) {
if ((getFlags() & DIRECT) != 0) e.substituteCode("XQDY0025", "XQST0040");
throw e;
}
}
for (int c = 0; c < contents.length; c++) {
contents[c].evalAsEvents(output, focus, context);
output.noSpace();
}
output.putElementEnd(qname);
} catch (DataModelException e) {
dmError(context, e);
}
}
public XQValue eval(Focus focus, EvalContext context) throws EvaluationException {
context.at(this);
try {
XQValue res = caught.eval(focus, context);
// it is crucial to expand the sequence here, so that
// eval errors are actually caught
ArraySequence expanded = new ArraySequence(4, res);
for (; res.next(); ) expanded.addItem(res.getItem());
return expanded;
} catch (EvaluationException e) {
Catch catcher = null;
for (int i = 0; i < catches.length; i++) {
if (catches[i].catches(e.getErrorCode())) {
catcher = catches[i];
break;
}
}
if (catcher == null) throw e;
if (compatibility) {
// feature: show error as a node whose name is the error code
// and whose content the message
CorePushBuilder builder = new CorePushBuilder("");
QName errName = IQName.get(e.getErrorCode());
try {
builder.putElementStart(errName); // cant be attr value
builder.putText(e.getMessage());
builder.putElementEnd(errName);
} catch (QizxException e1) {;
}
context.storeLocal(
catcher.valueVar.address, new SingleNode(builder.harvest()), false /* current */, null);
} else { // 1.1
if (catcher.codeVar != null) {
context.storeLocal(
catcher.codeVar.address,
new SingleQName(e.getErrorCode()),
false /* current */,
null);
}
if (catcher.descVar != null) {
context.storeLocal(
catcher.descVar.address, new SingleString(e.getMessage()), false /* current */, null);
}
if (catcher.valueVar != null) {
XQValue v = e.getValue();
if (v == null) v = XQValue.empty;
context.storeLocal(catcher.valueVar.address, v, false /* current */, null);
}
}
// execute the handler with bound variables (if any)
return catcher.handler.eval(focus, context);
}
}