modules/hibernate-5.3/src/main/java/org/apache/ignite/cache/hibernate/IgniteDomainDataRegion.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.ignite.cache.hibernate;

import org.apache.ignite.Ignite;
import org.hibernate.cache.CacheException;
import org.hibernate.cache.cfg.spi.CollectionDataCachingConfig;
import org.hibernate.cache.cfg.spi.DomainDataRegionBuildingContext;
import org.hibernate.cache.cfg.spi.DomainDataRegionConfig;
import org.hibernate.cache.cfg.spi.EntityDataCachingConfig;
import org.hibernate.cache.cfg.spi.NaturalIdDataCachingConfig;
import org.hibernate.cache.spi.CacheKeysFactory;
import org.hibernate.cache.spi.ExtendedStatisticsSupport;
import org.hibernate.cache.spi.RegionFactory;
import org.hibernate.cache.spi.access.AccessType;
import org.hibernate.cache.spi.access.CollectionDataAccess;
import org.hibernate.cache.spi.access.EntityDataAccess;
import org.hibernate.cache.spi.access.NaturalIdDataAccess;
import org.hibernate.cache.spi.support.AbstractDomainDataRegion;

/**
 * Implementation of a region for cacheable domain data.
 */
public class IgniteDomainDataRegion extends AbstractDomainDataRegion implements ExtendedStatisticsSupport {
    /** Cache proxy. */
    private final HibernateCacheProxy cache;

    /** Strategy factory. */
    private HibernateAccessStrategyFactory stgyFactory;

    /**
     * @param regionCfg Domain data region configuration.
     * @param regionFactory Region factory.
     * @param defKeysFactory Default cache keys factory.
     * @param buildingCtx Domain data region building context.
     * @param stgyFactory Access strategy factory.
     */
    public IgniteDomainDataRegion(DomainDataRegionConfig regionCfg,
        RegionFactory regionFactory,
        CacheKeysFactory defKeysFactory,
        DomainDataRegionBuildingContext buildingCtx,
        HibernateAccessStrategyFactory stgyFactory) {
        super(regionCfg, regionFactory, defKeysFactory, buildingCtx);

        this.stgyFactory = stgyFactory;

        cache = stgyFactory.regionCache(getName());

        completeInstantiation(regionCfg, buildingCtx);
    }

    /** {@inheritDoc} */
    @Override protected EntityDataAccess generateEntityAccess(EntityDataCachingConfig entityAccessCfg) {
        AccessType accessType = entityAccessCfg.getAccessType();
        Ignite ignite = stgyFactory.node();
        switch (accessType) {
            case READ_ONLY:
                HibernateAccessStrategyAdapter readOnlyStgy =
                    stgyFactory.createReadOnlyStrategy(cache);
                return new IgniteEntityDataAccess(readOnlyStgy, accessType, getRegionFactory(),
                    this, ignite, cache);

            case NONSTRICT_READ_WRITE:
                HibernateAccessStrategyAdapter nonStrictReadWriteStgy =
                    stgyFactory.createNonStrictReadWriteStrategy(cache);
                return new IgniteEntityDataAccess(nonStrictReadWriteStgy, accessType, getRegionFactory(),
                    this, ignite, cache);

            case READ_WRITE:
                HibernateAccessStrategyAdapter readWriteStgy =
                    stgyFactory.createReadWriteStrategy(cache);
                return new IgniteEntityDataAccess(readWriteStgy, accessType, getRegionFactory(),
                    this, ignite, cache);

            case TRANSACTIONAL:
                HibernateAccessStrategyAdapter transactionalStgy =
                    stgyFactory.createTransactionalStrategy(cache);
                return new IgniteEntityDataAccess(transactionalStgy, accessType, getRegionFactory(),
                    this, ignite, cache);

            default:
                throw new IllegalArgumentException("Unknown Hibernate access type: " + accessType);
        }
    }

    /** {@inheritDoc} */
    @Override protected CollectionDataAccess generateCollectionAccess(CollectionDataCachingConfig cachingCfg) {
        HibernateCacheProxy cache = stgyFactory.regionCache(getName());
        AccessType accessType = cachingCfg.getAccessType();
        Ignite ignite = stgyFactory.node();
        switch (accessType) {
            case READ_ONLY:
                HibernateAccessStrategyAdapter readOnlyStgy =
                    stgyFactory.createReadOnlyStrategy(cache);
                return new IgniteCollectionDataAccess(readOnlyStgy, accessType, getRegionFactory(),
                    this, ignite, cache);

            case NONSTRICT_READ_WRITE:
                HibernateAccessStrategyAdapter nonStrictReadWriteStgy =
                    stgyFactory.createNonStrictReadWriteStrategy(cache);
                return new IgniteCollectionDataAccess(nonStrictReadWriteStgy, accessType, getRegionFactory(),
                    this, ignite, cache);

            case READ_WRITE:
                HibernateAccessStrategyAdapter readWriteStgy =
                    stgyFactory.createReadWriteStrategy(cache);
                return new IgniteCollectionDataAccess(readWriteStgy, accessType, getRegionFactory(),
                    this, ignite, cache);

            case TRANSACTIONAL:
                HibernateAccessStrategyAdapter transactionalStgy =
                    stgyFactory.createTransactionalStrategy(cache);
                return new IgniteCollectionDataAccess(transactionalStgy, accessType, getRegionFactory(),
                    this, ignite, cache);

            default:
                throw new IllegalArgumentException("Unknown Hibernate access type: " + accessType);
        }
    }

    /** {@inheritDoc} */
    @Override protected NaturalIdDataAccess generateNaturalIdAccess(NaturalIdDataCachingConfig naturalIdAccessCfg) {
        HibernateCacheProxy cache = stgyFactory.regionCache(getName());
        AccessType accessType = naturalIdAccessCfg.getAccessType();
        Ignite ignite = stgyFactory.node();
        switch (accessType) {
            case READ_ONLY:
                HibernateAccessStrategyAdapter readOnlyStgy =
                    stgyFactory.createReadOnlyStrategy(cache);
                return new IgniteNaturalIdDataAccess(readOnlyStgy, accessType, getRegionFactory(),
                    this, ignite, cache);

            case NONSTRICT_READ_WRITE:
                HibernateAccessStrategyAdapter nonStrictReadWriteStgy =
                    stgyFactory.createNonStrictReadWriteStrategy(cache);
                return new IgniteNaturalIdDataAccess(nonStrictReadWriteStgy, accessType, getRegionFactory(),
                    this, ignite, cache);

            case READ_WRITE:
                HibernateAccessStrategyAdapter readWriteStgy =
                    stgyFactory.createReadWriteStrategy(cache);
                return new IgniteNaturalIdDataAccess(readWriteStgy, accessType, getRegionFactory(),
                    this, ignite, cache);

            case TRANSACTIONAL:
                HibernateAccessStrategyAdapter transactionalStgy =
                    stgyFactory.createTransactionalStrategy(cache);
                return new IgniteNaturalIdDataAccess(transactionalStgy, accessType, getRegionFactory(),
                    this, ignite, cache);

            default:
                throw new IllegalArgumentException("Unknown Hibernate access type: " + accessType);
        }
    }

    /** {@inheritDoc} */
    @Override public void destroy() throws CacheException {
        // no-op
    }

    /** {@inheritDoc} */
    @Override public long getElementCountInMemory() {
        return cache.offHeapEntriesCount();
    }

    /** {@inheritDoc} */
    @Override public long getElementCountOnDisk() {
        return cache.sizeLong();
    }

    /** {@inheritDoc} */
    @Override public long getSizeInMemory() {
        return cache.offHeapAllocatedSize();
    }
}