private void prepareForIndex(QueryTranslatorImpl q) throws QueryException {
QueryableCollection collPersister = q.getCollectionPersister(collectionRole);
if (!collPersister.hasIndex())
throw new QueryException("unindexed collection before []: " + path);
String[] indexCols = collPersister.getIndexColumnNames();
if (indexCols.length != 1) throw new QueryException("composite-index appears in []: " + path);
// String[] keyCols = collPersister.getKeyColumnNames();
JoinSequence fromJoins =
new JoinSequence(q.getFactory())
.setUseThetaStyle(useThetaStyleJoin)
.setRoot(collPersister, collectionName)
.setNext(joinSequence.copy());
if (!continuation) addJoin(collectionName, collPersister.getCollectionType());
joinSequence.addCondition(
collectionName + '.' + indexCols[0] + " = "); // TODO: get SQL rendering out of here
CollectionElement elem = new CollectionElement();
elem.elementColumns = collPersister.getElementColumnNames(collectionName);
elem.elementType = collPersister.getElementType();
elem.isOneToMany = collPersister.isOneToMany();
elem.alias = collectionName;
elem.joinSequence = joinSequence;
collectionElements.addLast(elem);
setExpectingCollectionIndex();
q.addCollection(collectionName, collectionRole);
q.addFromJoinOnly(collectionName, fromJoins);
}
/** Used for collection filters */
private void addFromAssociation(final String elementName, final String collectionRole)
throws QueryException {
// q.addCollection(collectionName, collectionRole);
QueryableCollection persister = getCollectionPersister(collectionRole);
Type collectionElementType = persister.getElementType();
if (!collectionElementType.isEntityType()) {
throw new QueryException("collection of values in filter: " + elementName);
}
String[] keyColumnNames = persister.getKeyColumnNames();
// if (keyColumnNames.length!=1) throw new QueryException("composite-key collection in filter: "
// + collectionRole);
String collectionName;
JoinSequence join = new JoinSequence(getFactory());
collectionName =
persister.isOneToMany() ? elementName : createNameForCollection(collectionRole);
join.setRoot(persister, collectionName);
if (!persister.isOneToMany()) {
// many-to-many
addCollection(collectionName, collectionRole);
try {
join.addJoin(
(AssociationType) persister.getElementType(),
elementName,
JoinType.INNER_JOIN,
persister.getElementColumnNames(collectionName));
} catch (MappingException me) {
throw new QueryException(me);
}
}
join.addCondition(collectionName, keyColumnNames, " = ?");
// if ( persister.hasWhere() ) join.addCondition( persister.getSQLWhereString(collectionName) );
EntityType elemType = (EntityType) collectionElementType;
addFrom(elementName, elemType.getAssociatedEntityName(), join);
}
public void token(String token, QueryTranslatorImpl q) throws QueryException {
if (token != null) path.append(token);
String alias = q.getPathAlias(path.toString());
if (alias != null) {
reset(q); // reset the dotcount (but not the path)
currentName = alias; // after reset!
currentPropertyMapping = q.getPropertyMapping(currentName);
if (!ignoreInitialJoin) {
JoinSequence ojf = q.getPathJoin(path.toString());
try {
joinSequence.addCondition(
ojf.toJoinFragment(q.getEnabledFilters(), true)
.toWhereFragmentString()); // after reset!
} catch (MappingException me) {
throw new QueryException(me);
}
// we don't need to worry about any condition in the ON clause
// here (toFromFragmentString), since anything in the ON condition
// is already applied to the whole query
}
} else if (".".equals(token)) {
dotcount++;
} else {
if (dotcount == 0) {
if (!continuation) {
if (!q.isName(token)) throw new QueryException("undefined alias: " + token);
currentName = token;
currentPropertyMapping = q.getPropertyMapping(currentName);
}
} else if (dotcount == 1) {
if (currentName != null) {
currentProperty = token;
} else if (collectionName != null) {
// processCollectionProperty(token, q.getCollectionPersister(collectionRole),
// collectionName);
continuation = false;
} else {
throw new QueryException("unexpected");
}
} else { // dotcount>=2
// Do the corresponding RHS
Type propertyType = getPropertyType();
if (propertyType == null) {
throw new QueryException("unresolved property: " + path);
}
if (propertyType.isComponentType()) {
dereferenceComponent(token);
} else if (propertyType.isEntityType()) {
if (!isCollectionValued()) dereferenceEntity(token, (EntityType) propertyType, q);
} else if (propertyType.isCollectionType()) {
dereferenceCollection(token, ((CollectionType) propertyType).getRole(), q);
} else {
if (token != null) throw new QueryException("dereferenced: " + path);
}
}
}
}
