private String resolveCollectionProperties(String aliasName, String propertyName) {
Map fieldResults = context.getPropertyResultsMapByAlias(aliasName);
SQLLoadableCollection collectionPersister = context.getCollectionPersisterByAlias(aliasName);
String collectionSuffix = context.getCollectionSuffixByAlias(aliasName);
if ("*".equals(propertyName)) {
if (!fieldResults.isEmpty()) {
throw new QueryException("Using return-propertys together with * syntax is not supported.");
}
String selectFragment = collectionPersister.selectFragment(aliasName, collectionSuffix);
aliasesFound++;
return selectFragment + ", " + resolveProperties(aliasName, propertyName);
} else if ("element.*".equals(propertyName)) {
return resolveProperties(aliasName, "*");
} else {
String[] columnAliases;
// Let return-propertys override whatever the persister has for aliases.
columnAliases = (String[]) fieldResults.get(propertyName);
if (columnAliases == null) {
columnAliases =
collectionPersister.getCollectionPropertyColumnAliases(propertyName, collectionSuffix);
}
if (columnAliases == null || columnAliases.length == 0) {
throw new QueryException(
"No column name found for property ["
+ propertyName
+ "] for alias ["
+ aliasName
+ "]",
originalQueryString);
}
if (columnAliases.length != 1) {
// TODO: better error message since we actually support composites if names are explicitly
// listed.
throw new QueryException(
"SQL queries only support properties mapped to a single column - property ["
+ propertyName
+ "] is mapped to "
+ columnAliases.length
+ " columns.",
originalQueryString);
}
aliasesFound++;
return columnAliases[0];
}
}
