org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter.java Source code

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Here is the source code for org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter.java

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/*
 * Copyright 2002-2018 the original author or authors.
 *
 * 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
 *
 *      https://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.springframework.orm.jpa.vendor;

import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;
import javax.persistence.EntityManager;
import javax.persistence.spi.PersistenceProvider;

import org.eclipse.persistence.config.PersistenceUnitProperties;
import org.eclipse.persistence.config.TargetDatabase;
import org.eclipse.persistence.jpa.JpaEntityManager;

import org.springframework.lang.Nullable;

/**
 * {@link org.springframework.orm.jpa.JpaVendorAdapter} implementation for Eclipse
 * Persistence Services (EclipseLink). Developed and tested against EclipseLink 2.7;
 * backwards-compatible with EclipseLink 2.5 and 2.6 at runtime.
 *
 * <p>Exposes EclipseLink's persistence provider and EntityManager extension interface,
 * and adapts {@link AbstractJpaVendorAdapter}'s common configuration settings.
 * No support for the detection of annotated packages (through
 * {@link org.springframework.orm.jpa.persistenceunit.SmartPersistenceUnitInfo#getManagedPackages()})
 * since EclipseLink doesn't use package-level metadata.
 *
 * @author Juergen Hoeller
 * @author Thomas Risberg
 * @since 2.5.2
 * @see EclipseLinkJpaDialect
 * @see org.eclipse.persistence.jpa.PersistenceProvider
 * @see org.eclipse.persistence.jpa.JpaEntityManager
 */
public class EclipseLinkJpaVendorAdapter extends AbstractJpaVendorAdapter {

    private final PersistenceProvider persistenceProvider = new org.eclipse.persistence.jpa.PersistenceProvider();

    private final EclipseLinkJpaDialect jpaDialect = new EclipseLinkJpaDialect();

    @Override
    public PersistenceProvider getPersistenceProvider() {
        return this.persistenceProvider;
    }

    @Override
    public Map<String, Object> getJpaPropertyMap() {
        Map<String, Object> jpaProperties = new HashMap<>();

        if (getDatabasePlatform() != null) {
            jpaProperties.put(PersistenceUnitProperties.TARGET_DATABASE, getDatabasePlatform());
        } else {
            String targetDatabase = determineTargetDatabaseName(getDatabase());
            if (targetDatabase != null) {
                jpaProperties.put(PersistenceUnitProperties.TARGET_DATABASE, targetDatabase);
            }
        }

        if (isGenerateDdl()) {
            jpaProperties.put(PersistenceUnitProperties.DDL_GENERATION, PersistenceUnitProperties.CREATE_ONLY);
            jpaProperties.put(PersistenceUnitProperties.DDL_GENERATION_MODE,
                    PersistenceUnitProperties.DDL_DATABASE_GENERATION);
        }
        if (isShowSql()) {
            jpaProperties.put(PersistenceUnitProperties.CATEGORY_LOGGING_LEVEL_
                    + org.eclipse.persistence.logging.SessionLog.SQL, Level.FINE.toString());
            jpaProperties.put(PersistenceUnitProperties.LOGGING_PARAMETERS, Boolean.TRUE.toString());
        }

        return jpaProperties;
    }

    /**
     * Determine the EclipseLink target database name for the given database.
     * @param database the specified database
     * @return the EclipseLink target database name, or {@code null} if none found
     */
    @Nullable
    protected String determineTargetDatabaseName(Database database) {
        switch (database) {
        case DB2:
            return TargetDatabase.DB2;
        case DERBY:
            return TargetDatabase.Derby;
        case HANA:
            return TargetDatabase.HANA;
        case HSQL:
            return TargetDatabase.HSQL;
        case INFORMIX:
            return TargetDatabase.Informix;
        case MYSQL:
            return TargetDatabase.MySQL;
        case ORACLE:
            return TargetDatabase.Oracle;
        case POSTGRESQL:
            return TargetDatabase.PostgreSQL;
        case SQL_SERVER:
            return TargetDatabase.SQLServer;
        case SYBASE:
            return TargetDatabase.Sybase;
        default:
            return null;
        }
    }

    @Override
    public EclipseLinkJpaDialect getJpaDialect() {
        return this.jpaDialect;
    }

    @Override
    public Class<? extends EntityManager> getEntityManagerInterface() {
        return JpaEntityManager.class;
    }

}