/**
* Set the expression defining the value of the attribute. If this is a constant, and if
* validation against a schema type was requested, the validation is done immediately.
*
* @param select The expression defining the content of the attribute
* @param config
* @throws StaticError if the expression is a constant, and validation is requested, and the
* constant doesn't match the required type.
*/
public void setSelect(Expression select, Configuration config) throws StaticError {
super.setSelect(select, config);
// Attempt early validation if possible
if (select instanceof AtomicValue && schemaType != null && !schemaType.isNamespaceSensitive()) {
CharSequence value = ((AtomicValue) select).getStringValueCS();
XPathException err =
schemaType.validateContent(
value, DummyNamespaceResolver.getInstance(), config.getNameChecker());
if (err != null) {
StaticError se =
new StaticError(
"Attribute value "
+ Err.wrap(value, Err.VALUE)
+ " does not the match the required type "
+ schemaType.getDescription()
+ ". "
+ err.getMessage());
se.setErrorCode("XTTE1540");
throw se;
}
}
// If value is fixed, test whether there are any special characters that might need to be
// escaped when the time comes for serialization
if (select instanceof StringValue) {
boolean special = false;
CharSequence val = ((StringValue) select).getStringValueCS();
for (int k = 0; k < val.length(); k++) {
char c = val.charAt(k);
if ((int) c < 33 || (int) c > 126 || c == '<' || c == '>' || c == '&' || c == '\"') {
special = true;
break;
}
}
if (!special) {
this.options |= ReceiverOptions.NO_SPECIAL_CHARS;
}
}
// If attribute name is xml:id, add whitespace normalization
if ((nameCode & NamePool.FP_MASK) == StandardNames.XML_ID) {
Expression[] args = {select};
FunctionCall fn =
SystemFunction.makeSystemFunction("normalize-space", 1, config.getNamePool());
fn.setArguments(args);
select = fn;
super.setSelect(select, config);
}
}
/** Display this instruction as an expression, for diagnostics */
public void display(int level, PrintStream out, Configuration config) {
out.println(ExpressionTool.indent(level) + "attribute ");
out.println(
ExpressionTool.indent(level + 1)
+ "name "
+ (config == null ? nameCode + "" : config.getNamePool().getDisplayName(nameCode)));
super.display(level + 1, out, config);
}
