private Value buildDerefValue(
Element fieldEl, String valueExpr, boolean extractContent, String formatter)
throws IndexerConfException, InterruptedException, RepositoryException {
final String[] derefParts = parseDerefParts(fieldEl, valueExpr);
final FieldType fieldType = constructDerefFieldType(fieldEl, valueExpr, derefParts);
final DerefValue deref = new DerefValue(fieldType, extractContent, formatter);
//
// Run over all children except the last
//
boolean lastFollowIsRecord = false;
for (int i = 0; i < derefParts.length - 1; i++) {
String derefPart = derefParts[i];
// A deref expression can navigate through 5 kinds of 'links':
// - a link stored in a link field (detected based on presence of a colon)
// - a nested record
// - a link to the master variant (if it's the literal string 'master')
// - a link to a less-dimensioned variant
// - a link to a more-dimensioned variant
if (derefPart.contains(":")) { // It's a field name
lastFollowIsRecord = processFieldDeref(fieldEl, valueExpr, deref, derefPart);
} else if (derefPart.equals("master")) { // Link to master variant
if (lastFollowIsRecord) {
throw new IndexerConfException(
"In dereferencing, master cannot follow on record-type field."
+ " Deref expression: '"
+ valueExpr
+ "' at "
+ LocationAttributes.getLocation(fieldEl));
}
lastFollowIsRecord = false;
deref.addMasterFollow();
} else if (derefPart.trim().startsWith("-")) { // Link to less dimensioned variant
if (lastFollowIsRecord) {
throw new IndexerConfException(
"In dereferencing, variant cannot follow on record-type field."
+ " Deref expression: '"
+ valueExpr
+ "' at "
+ LocationAttributes.getLocation(fieldEl));
}
lastFollowIsRecord = false;
processLessDimensionedVariantsDeref(fieldEl, valueExpr, deref, derefPart);
} else if (derefPart.trim().startsWith("+")) { // Link to more dimensioned variant
if (lastFollowIsRecord) {
throw new IndexerConfException(
"In dereferencing, variant cannot follow on record-type field."
+ " Deref expression: '"
+ valueExpr
+ "' at "
+ LocationAttributes.getLocation(fieldEl));
}
lastFollowIsRecord = false;
processMoreDimensionedVariantsDeref(fieldEl, valueExpr, deref, derefPart);
}
}
deref.init(typeManager);
return deref;
}
