Examples with EntityJoinFromElement org.hibernate.hql.internal.ast.tree.EntityJoinFromElement used on opensource projects

Example 1 with EntityJoinFromElement

use of org.hibernate.hql.internal.ast.tree.EntityJoinFromElement in project hibernate-orm by hibernate.

the class HqlSqlWalker method createEntityJoin.

private EntityJoinFromElement createEntityJoin(EntityPersister entityPersister, AST aliasNode, int joinType, AST propertyFetch, AST with) throws SemanticException {
    final String alias = aliasNode == null ? null : aliasNode.getText();
    LOG.debugf("Creating entity-join FromElement [%s -> %s]", alias, entityPersister.getEntityName());
    EntityJoinFromElement join = new EntityJoinFromElement(this, getCurrentFromClause(), entityPersister, JoinProcessor.toHibernateJoinType(joinType), propertyFetch != null, alias);
    if (with != null) {
        handleWithFragment(join, with);
    }
    return join;
}

Example 2 with EntityJoinFromElement

use of org.hibernate.hql.internal.ast.tree.EntityJoinFromElement in project hibernate-orm by hibernate.

the class HqlSqlWalker method createFromJoinElement.

@Override
protected void createFromJoinElement(AST path, AST alias, int joinType, AST fetchNode, AST propertyFetch, AST with) throws SemanticException {
    boolean fetch = fetchNode != null;
    if (fetch && isSubQuery()) {
        throw new QueryException("fetch not allowed in subquery from-elements");
    }
    // the incoming "path" can be either:
    // 1) an implicit join path (join p.address.city)
    // 2) an entity-join (join com.acme.User)
    // 
    // so make the proper interpretation here...
    final EntityPersister entityJoinReferencedPersister = resolveEntityJoinReferencedPersister(path);
    if (entityJoinReferencedPersister != null) {
        // `path` referenced an entity
        final EntityJoinFromElement join = createEntityJoin(entityJoinReferencedPersister, alias, joinType, propertyFetch, with);
        ((FromReferenceNode) path).setFromElement(join);
    } else {
        if (path.getType() != SqlTokenTypes.DOT) {
            throw new SemanticException("Path expected for join!");
        }
        DotNode dot = (DotNode) path;
        JoinType hibernateJoinType = JoinProcessor.toHibernateJoinType(joinType);
        // Tell the dot node about the join type.
        dot.setJoinType(hibernateJoinType);
        dot.setFetch(fetch);
        // Generate an explicit join for the root dot node.   The implied joins will be collected and passed up
        // to the root dot node.
        dot.resolve(true, false, alias == null ? null : alias.getText());
        final FromElement fromElement;
        if (dot.getDataType() != null && dot.getDataType().isComponentType()) {
            if (dot.getDataType().isAnyType()) {
                throw new SemanticException("An AnyType attribute cannot be join fetched");
            // ^^ because the discriminator (aka, the "meta columns") must be known to the SQL in
            // a non-parameterized way.
            }
            FromElementFactory factory = new FromElementFactory(getCurrentFromClause(), dot.getLhs().getFromElement(), dot.getPropertyPath(), alias == null ? null : alias.getText(), null, false);
            fromElement = factory.createComponentJoin((CompositeType) dot.getDataType());
        } else {
            fromElement = dot.getImpliedJoin();
            fromElement.setAllPropertyFetch(propertyFetch != null);
            if (with != null) {
                if (fetch) {
                    throw new SemanticException("with-clause not allowed on fetched associations; use filters");
                }
                handleWithFragment(fromElement, with);
            }
        }
        if (LOG.isDebugEnabled()) {
            LOG.debug("createFromJoinElement() : " + getASTPrinter().showAsString(fromElement, "-- join tree --"));
        }
    }
}