| /** |
| * Copyright 2009-2013 Oy Vaadin Ltd |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.eclipse.osbp.dsl.dto.lib.services.jpa.metadata; |
| |
| import java.io.Serializable; |
| import java.util.List; |
| import java.util.logging.Filter; |
| |
| import javax.persistence.criteria.CriteriaBuilder; |
| import javax.persistence.criteria.CriteriaQuery; |
| import javax.persistence.criteria.Order; |
| import javax.persistence.criteria.Predicate; |
| |
| import org.eclipse.osbp.dsl.dto.lib.services.SortBy; |
| |
| /** |
| * The QueryModifierDelegate interface defines methods that will be called at |
| * the different stages of {@link CriteriaQuery} generation. Implement this |
| * interface and call |
| * {@link EntityDelegate#setQueryModifierDelegate(QueryModifierDelegate)} to |
| * receive calls while the {@link CriteriaQuery} is being built. The methods are |
| * allowed to modify the CriteriaQuery. |
| * |
| * @since 2.0 |
| */ |
| public interface QueryModifierDelegate extends Serializable { |
| /** |
| * This method is called after the {@link CriteriaQuery} instance ( |
| * <code>query</code>) has been instantiated, but before any state has been |
| * set. |
| * |
| * Operations and configuration may be performed on the query instance. |
| * |
| * @param criteriaBuilder |
| * the {@link CriteriaBuilder} used to build the query |
| * @param query |
| * the {@link CriteriaQuery} being built |
| */ |
| public void queryWillBeBuilt(CriteriaBuilder criteriaBuilder, |
| CriteriaQuery<?> query); |
| |
| /** |
| * This method is called after the {@link CriteriaQuery} instance has been |
| * completely built (configured). |
| * |
| * Any operations may be performed on the query instance. |
| * |
| * @param criteriaBuilder |
| * the {@link CriteriaBuilder} used to build the query |
| * @param query |
| * the {@link CriteriaQuery} being built |
| */ |
| public void queryHasBeenBuilt(CriteriaBuilder criteriaBuilder, |
| CriteriaQuery<?> query); |
| |
| /** |
| * This method is called after filters (in the form of {@link Filter}) have |
| * been translated into instances of {@link Predicate}, but before the |
| * resulting predicates have been added to <code>query</code>. |
| * |
| * The contents of the <code>predicates</code> list may be modified at this |
| * point. Any operations may be performed on the query instance. |
| * |
| * @param criteriaBuilder |
| * the {@link CriteriaBuilder} used to build the query |
| * @param query |
| * the {@link CriteriaQuery} being built |
| * @param predicates |
| * the list of predicates ({@link Predicate}) to be applied. The |
| * contents of this list may be modified. |
| */ |
| public void filtersWillBeAdded(CriteriaBuilder criteriaBuilder, |
| CriteriaQuery<?> query, List<Predicate> predicates); |
| |
| /** |
| * This method is called after all filters have been applied to the query. |
| * |
| * Any operations may be performed on the query instance. |
| * |
| * @param criteriaBuilder |
| * the {@link CriteriaBuilder} used to build the query |
| * @param query |
| * the {@link CriteriaQuery} being built |
| */ |
| public void filtersWereAdded(CriteriaBuilder criteriaBuilder, |
| CriteriaQuery<?> query); |
| |
| /** |
| * This method is called after all {@link SortBy} instances have been |
| * translated into {@link Order} instances, but before they have been |
| * applied to the query. |
| * |
| * The contents of the <code>orderBy</code> list may be modified at this |
| * point. Any operations may be performed on the query instance. |
| * |
| * @param criteriaBuilder |
| * the {@link CriteriaBuilder} used to build the query |
| * @param query |
| * the {@link CriteriaQuery} being built |
| * @param orderBy |
| * the list of order by rules ({@link Order}) to be applied. The |
| * contents of this list may be modified. |
| */ |
| public void orderByWillBeAdded(CriteriaBuilder criteriaBuilder, |
| CriteriaQuery<?> query, List<Order> orderBy); |
| |
| /** |
| * This method is called after the order by has been applied for the query. |
| * |
| * Any operations may be performed on the query instance. |
| * |
| * @param criteriaBuilder |
| * the {@link CriteriaBuilder} used to build the query |
| * @param query |
| * the {@link CriteriaQuery} being built |
| */ |
| public void orderByWasAdded(CriteriaBuilder criteriaBuilder, |
| CriteriaQuery<?> query); |
| } |