protected String generateTableAlias(int n, PropertyPath path, Joinable joinable) {
// TODO: deal with side-effects (changes to includeInResultRowList, userAliasList,
// resultTypeList)!!!
// for collection-of-entity, we are called twice for given "path"
// once for the collection Joinable, once for the entity Joinable.
// the second call will/must "consume" the alias + perform side effects according to
// consumesEntityAlias()
// for collection-of-other, however, there is only one call
// it must "consume" the alias + perform side effects, despite what consumeEntityAlias() return
// says
//
// note: the logic for adding to the userAliasList is still strictly based on
// consumesEntityAlias return value
boolean checkForSqlAlias = joinable.consumesEntityAlias();
if (!checkForSqlAlias && joinable.isCollection()) {
// is it a collection-of-other (component or value) ?
CollectionPersister collectionPersister = (CollectionPersister) joinable;
Type elementType = collectionPersister.getElementType();
if (elementType.isComponentType() || !elementType.isEntityType()) {
checkForSqlAlias = true;
}
}
String sqlAlias = null;
if (checkForSqlAlias) {
final Criteria subcriteria = translator.getCriteria(path.getFullPath());
sqlAlias = subcriteria == null ? null : translator.getSQLAlias(subcriteria);
if (joinable.consumesEntityAlias() && !translator.hasProjection()) {
includeInResultRowList.add(subcriteria != null && subcriteria.getAlias() != null);
if (sqlAlias != null) {
if (subcriteria.getAlias() != null) {
userAliasList.add(subcriteria.getAlias());
resultTypeList.add(translator.getResultType(subcriteria));
}
}
}
}
if (sqlAlias == null) {
sqlAlias = super.generateTableAlias(n + translator.getSQLAliasCount(), path, joinable);
}
return sqlAlias;
}
public CriteriaJoinWalker(
final OuterJoinLoadable persister,
final CriteriaQueryTranslator translator,
final SessionFactoryImplementor factory,
final CriteriaImpl criteria,
final String rootEntityName,
final LoadQueryInfluencers loadQueryInfluencers,
final String alias) {
super(persister, factory, loadQueryInfluencers, alias);
this.translator = translator;
querySpaces = translator.getQuerySpaces();
if (translator.hasProjection()) {
initProjection(
translator.getSelect(),
translator.getWhereCondition(),
translator.getOrderBy(),
translator.getGroupBy(),
LockOptions.NONE);
resultTypes = translator.getProjectedTypes();
userAliases = translator.getProjectedAliases();
includeInResultRow = new boolean[resultTypes.length];
Arrays.fill(includeInResultRow, true);
} else {
initAll(translator.getWhereCondition(), translator.getOrderBy(), LockOptions.NONE);
// root entity comes last
userAliasList.add(criteria.getAlias()); // root entity comes *last*
resultTypeList.add(translator.getResultType(criteria));
includeInResultRowList.add(true);
userAliases = ArrayHelper.toStringArray(userAliasList);
resultTypes = ArrayHelper.toTypeArray(resultTypeList);
includeInResultRow = ArrayHelper.toBooleanArray(includeInResultRowList);
}
}
protected JoinType getJoinType(
OuterJoinLoadable persister,
final PropertyPath path,
int propertyNumber,
AssociationType associationType,
FetchMode metadataFetchMode,
CascadeStyle metadataCascadeStyle,
String lhsTable,
String[] lhsColumns,
final boolean nullable,
final int currentDepth)
throws MappingException {
final JoinType resolvedJoinType;
if (translator.isJoin(path.getFullPath())) {
resolvedJoinType = translator.getJoinType(path.getFullPath());
} else {
if (translator.hasProjection()) {
resolvedJoinType = JoinType.NONE;
} else {
FetchMode fetchMode = translator.getRootCriteria().getFetchMode(path.getFullPath());
if (isDefaultFetchMode(fetchMode)) {
if (persister != null) {
if (isJoinFetchEnabledByProfile(persister, path, propertyNumber)) {
if (isDuplicateAssociation(lhsTable, lhsColumns, associationType)) {
resolvedJoinType = JoinType.NONE;
} else if (isTooDeep(currentDepth)
|| (associationType.isCollectionType() && isTooManyCollections())) {
resolvedJoinType = JoinType.NONE;
} else {
resolvedJoinType = getJoinType(nullable, currentDepth);
}
} else {
resolvedJoinType =
super.getJoinType(
persister,
path,
propertyNumber,
associationType,
metadataFetchMode,
metadataCascadeStyle,
lhsTable,
lhsColumns,
nullable,
currentDepth);
}
} else {
resolvedJoinType =
super.getJoinType(
associationType,
metadataFetchMode,
path,
lhsTable,
lhsColumns,
nullable,
currentDepth,
metadataCascadeStyle);
}
} else {
if (fetchMode == FetchMode.JOIN) {
isDuplicateAssociation(
lhsTable, lhsColumns, associationType); // deliberately ignore return value!
resolvedJoinType = getJoinType(nullable, currentDepth);
} else {
resolvedJoinType = JoinType.NONE;
}
}
}
}
return resolvedJoinType;
}