/**
* 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);
}
}
/**
* Return the negation of the expression
*
* @return the negation of the expression
*/
public Expression negate() {
FunctionCall fc = SystemFunction.makeSystemFunction("exists", getArguments());
fc.setLocationId(getLocationId());
return fc;
}
/**
* @param result
* @param expr
*/
private static void serialize(
FastStringBuffer result, Expression expr, Map reversePrefixMapping) {
if (expr instanceof Assignation) {
// XXX not yet supported
} else if (expr instanceof AxisExpression) {
AxisExpression axisExpression = (AxisExpression) expr;
result.append(Axis.axisName[axisExpression.getAxis()]);
result.append("::");
final NodeTest nodeTest = axisExpression.getNodeTest();
if (nodeTest == null) {
result.append("node()");
} else {
result.append(fixPreFixes(nodeTest.toString(), reversePrefixMapping));
}
} else if (expr instanceof BinaryExpression) {
BinaryExpression binaryExpression = (BinaryExpression) expr;
result.append('(');
serialize(result, binaryExpression.getOperands()[0], reversePrefixMapping);
result.append(Token.tokens[binaryExpression.getOperator()]);
serialize(result, binaryExpression.getOperands()[1], reversePrefixMapping);
result.append(')');
} else if (expr instanceof CompareToIntegerConstant) {
CompareToIntegerConstant compareToIntegerConstant = (CompareToIntegerConstant) expr;
result.append('(');
serialize(result, compareToIntegerConstant.getOperand(), reversePrefixMapping);
result.append(Token.tokens[compareToIntegerConstant.getComparisonOperator()]);
result.append(Long.toString(compareToIntegerConstant.getComparand()));
result.append(')');
} else if (expr instanceof ConditionalSorter) {
// XXX not yet supported
} else if (expr instanceof ContextItemExpression) {
result.append('.');
} else if (expr instanceof ErrorExpression) {
// Error do nothing
} else if (expr instanceof FilterExpression) {
FilterExpression filterExpression = (FilterExpression) expr;
result.append('(');
serialize(result, filterExpression.getControllingExpression(), reversePrefixMapping);
result.append('[');
serialize(result, filterExpression.getFilter(), reversePrefixMapping);
result.append("])");
} else if (expr instanceof FunctionCall) {
FunctionCall functionCall = (FunctionCall) expr;
StructuredQName name = functionCall.getFunctionName();
if (name.getPrefix() != null && name.getPrefix().length() > 0) {
result.append(name.getPrefix());
result.append(":");
}
result.append(name.getLocalName());
result.append("(");
Iterator iter = functionCall.iterateSubExpressions();
boolean first = true;
while (iter.hasNext()) {
result.append(first ? "" : ", ");
SaxonXPathExpressionSerializer.serialize(
result, (Expression) iter.next(), reversePrefixMapping);
first = false;
}
result.append(")");
} else if (expr instanceof Instruction) {
// This is not an XPath expression
} else if (expr instanceof IntegerRangeTest) {
// XXX not yet supported
} else if (expr instanceof IsLastExpression) {
result.append("position() eq last()");
} else if (expr instanceof Literal) {
Literal literal = (Literal) expr;
result.append(literal.getValue().toString());
} else if (expr instanceof NumberInstruction) {
// This is not an XPath expression
} else if (expr instanceof PathExpression) {
PathExpression pathExpression = (PathExpression) expr;
result.append('(');
serialize(result, pathExpression.getControllingExpression(), reversePrefixMapping);
result.append('/');
serialize(result, pathExpression.getControlledExpression(), reversePrefixMapping);
result.append(')');
} else if (expr instanceof PatternMatchExpression) {
// XXX not yet supported
} else if (expr instanceof PatternSponsor) {
// XXX not yet supported
} else if (expr instanceof SimpleContentConstructor) {
// This is not an XPath expression
} else if (expr instanceof SimpleExpression) {
// This is not an XPath expression
}
/*
else if (expr instanceof SimpleMappingExpression) {
// XXX not yet supported
}
*/
else if (expr instanceof ParentNodeExpression) {
result.append("..");
} else if (expr instanceof RootExpression) {
// do nothing
} else if (expr instanceof SortExpression) {
// XXX not yet supported
} else if (expr instanceof TailExpression) {
// XXX not yet supported
} else if (expr instanceof TupleExpression) {
// This is not an XPath expression
} else if (expr instanceof TupleSorter) {
// This is not an XPath expression
} else if (expr instanceof UnaryExpression) {
UnaryExpression unaryExpression = (UnaryExpression) expr;
serialize(
result,
unaryExpression.getBaseExpression(),
reversePrefixMapping); // Not sure if this is correct in all cases
} else if (expr instanceof VariableReference) {
VariableReference variableReference = (VariableReference) expr;
String d = variableReference.getDisplayName();
result.append("$");
result.append(d == null ? "$" : d);
}
}