@Override
public VariableDeclaration isValidLocalVariableReference(
final Identifier variableReferenceIdentifier) {
final List<VariableDeclaration> variableDeclarations =
resolvedAssessmentItem.resolveVariableReference(variableReferenceIdentifier);
if (variableDeclarations == null) {
/* Item lookup failed, which is impossible here */
throw new QtiLogicException("Unexpected logic branch");
} else if (variableDeclarations.size() == 1) {
/* Found and unique, which is what we want */
final VariableDeclaration declaration = variableDeclarations.get(0);
if (declaration.hasValidSignature()) {
return declaration;
}
}
return null;
}
@Override
public final VariableDeclaration checkLocalVariableReference(
final QtiNode owner, final Identifier variableReferenceIdentifier) {
final List<VariableDeclaration> variableDeclarations =
resolvedAssessmentItem.resolveVariableReference(variableReferenceIdentifier);
if (variableDeclarations == null) {
/* Item lookup failed, which is impossible here */
throw new QtiLogicException("Unexpected logic branch");
} else if (variableDeclarations.size() == 1) {
/* Found and unique, which is what we want */
final VariableDeclaration declaration = variableDeclarations.get(0);
if (!declaration.hasValidSignature()) {
fireValidationWarning(
owner,
"Item variable referenced by identifier '"
+ variableReferenceIdentifier
+ "' has an invalid cardinality/baseType combination so no further validation will be performed on this reference");
return null;
}
return declaration;
} else if (variableDeclarations.isEmpty()) {
/* No variable found */
fireValidationError(
owner,
"Item variable referenced by identifier '"
+ variableReferenceIdentifier
+ "' has not been declared");
return null;
} else {
/* Multiple matches for identifier */
fireValidationError(
owner,
variableDeclarations.size()
+ " item variables have been declared with the same identifier '"
+ variableDeclarations
+ "'");
return null;
}
}