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

Example 16 with FromElement

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

the class LocalTemporaryTableBulkIdStrategy method buildUpdateHandler.

@Override
public UpdateHandler buildUpdateHandler(SessionFactoryImplementor factory, HqlSqlWalker walker) {
    final UpdateStatement updateStatement = (UpdateStatement) walker.getAST();
    final FromElement fromElement = updateStatement.getFromClause().getFromElement();
    final Queryable targetedPersister = fromElement.getQueryable();
    final IdTableInfoImpl tableInfo = getIdTableInfo(targetedPersister);
    return new TableBasedUpdateHandlerImpl(factory, walker, tableInfo) {

        @Override
        protected void prepareForUse(Queryable persister, SharedSessionContractImplementor session) {
            Helper.INSTANCE.createTempTable(tableInfo, ddlTransactionHandling, session);
        }

        @Override
        protected void releaseFromUse(Queryable persister, SharedSessionContractImplementor session) {
            Helper.INSTANCE.releaseTempTable(tableInfo, afterUseAction, ddlTransactionHandling, session);
        }
    };
}

Example 17 with FromElement

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

the class PersistentTableBulkIdStrategy method buildDeleteHandler.

@Override
public DeleteHandler buildDeleteHandler(SessionFactoryImplementor factory, HqlSqlWalker walker) {
    final DeleteStatement updateStatement = (DeleteStatement) walker.getAST();
    final FromElement fromElement = updateStatement.getFromClause().getFromElement();
    final Queryable targetedPersister = fromElement.getQueryable();
    return new DeleteHandlerImpl(factory, walker, getIdTableInfo(targetedPersister));
}

Example 18 with FromElement

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

the class GlobalTemporaryTableBulkIdStrategy method buildUpdateHandler.

@Override
public UpdateHandler buildUpdateHandler(SessionFactoryImplementor factory, HqlSqlWalker walker) {
    final UpdateStatement updateStatement = (UpdateStatement) walker.getAST();
    final FromElement fromElement = updateStatement.getFromClause().getFromElement();
    final Queryable targetedPersister = fromElement.getQueryable();
    return new TableBasedUpdateHandlerImpl(factory, walker, getIdTableInfo(targetedPersister)) {

        @Override
        protected void releaseFromUse(Queryable persister, SharedSessionContractImplementor session) {
            if (afterUseAction == AfterUseAction.NONE) {
                return;
            }
            // clean up our id-table rows
            cleanUpRows(getIdTableInfo(persister).getQualifiedIdTableName(), session);
        }
    };
}

Example 19 with FromElement

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

the class GlobalTemporaryTableBulkIdStrategy method buildDeleteHandler.

@Override
public DeleteHandler buildDeleteHandler(SessionFactoryImplementor factory, HqlSqlWalker walker) {
    final DeleteStatement updateStatement = (DeleteStatement) walker.getAST();
    final FromElement fromElement = updateStatement.getFromClause().getFromElement();
    final Queryable targetedPersister = fromElement.getQueryable();
    return new TableBasedDeleteHandlerImpl(factory, walker, getIdTableInfo(targetedPersister)) {

        @Override
        protected void releaseFromUse(Queryable persister, SharedSessionContractImplementor session) {
            if (afterUseAction == AfterUseAction.NONE) {
                return;
            }
            // clean up our id-table rows
            cleanUpRows(getIdTableInfo(persister).getQualifiedIdTableName(), session);
        }
    };
}

Example 20 with FromElement

use of org.hibernate.hql.internal.ast.tree.FromElement 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 --"));
        }
    }
}