/*
 * Copyright 2014 - 2017 Blazebit.
 *
 * 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 com.blazebit.persistence.impl.hibernate;

import org.hibernate.persister.collection.CollectionPersister;
import org.hibernate.persister.entity.EntityPersister;

import javax.persistence.EntityManager;
import java.util.Map;

/**
 *
 * @author Christian Beikov
 * @since 1.0
 */
public class HibernateJpa21Provider extends HibernateJpaProvider {

    private final boolean supportsEntityJoin;
    private final boolean needsJoinSubqueryRewrite;
    private final boolean supportsForeignAssociationInOnClause;
    private final boolean needsAssociationToIdRewriteInOnClause;
    private final boolean needsBrokenAssociationToIdRewriteInOnClause;

    public HibernateJpa21Provider(EntityManager em, String dbms, Map<String, EntityPersister> entityPersisters, Map<String, CollectionPersister> collectionPersisters, int major, int minor, int fix) {
        super(em, dbms, entityPersisters, collectionPersisters);
        this.supportsEntityJoin = major > 5 || major == 5 && minor >= 1;
        // Got fixed in 5.2.3: https://hibernate.atlassian.net/browse/HHH-9329 but is still buggy: https://hibernate.atlassian.net/browse/HHH-11401
        this.needsJoinSubqueryRewrite = major < 5 || major == 5 && minor < 2 || major == 5 && minor == 2 && fix < 7;
        // Got fixed in 5.2.8: https://hibernate.atlassian.net/browse/HHH-11450
        this.supportsForeignAssociationInOnClause = major > 5 || major == 5 && minor > 2 || major == 5 && minor == 2 && fix >= 8;
        // Got fixed in 5.2.7: https://hibernate.atlassian.net/browse/HHH-2772
        this.needsAssociationToIdRewriteInOnClause = major < 5 || major == 5 && minor < 2 || major == 5 && minor == 2 && fix < 7;
        // Got fixed in 5.1.0: https://hibernate.atlassian.net/browse/HHH-7321
        this.needsBrokenAssociationToIdRewriteInOnClause = major < 5 || major == 5 && minor < 1;
    }

    @Override
    public boolean supportsJpa21() {
        return true;
    }

    @Override
    public boolean supportsEntityJoin() {
        return supportsEntityJoin;
    }

    @Override
    public boolean needsJoinSubqueryRewrite() {
        return needsJoinSubqueryRewrite;
    }

    @Override
    public String getOnClause() {
        return "ON";
    }

    @Override
    public boolean supportsTreatJoin() {
        return true;
    }

    @Override
    public boolean supportsForeignAssociationInOnClause() {
        return supportsForeignAssociationInOnClause;
    }

    @Override
    public boolean needsAssociationToIdRewriteInOnClause() {
        return needsAssociationToIdRewriteInOnClause;
    }

    @Override
    public boolean needsBrokenAssociationToIdRewriteInOnClause() {
        return needsBrokenAssociationToIdRewriteInOnClause;
    }

}