elasticjob-cloud/elastic-job-cloud-common/src/main/java/org/apache/shardingsphere/elasticjob/cloud/event/rdb/DatabaseType.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.shardingsphere.elasticjob.cloud.event.rdb;

import com.google.common.base.Optional;
import com.google.common.base.Predicate;
import com.google.common.collect.Iterators;

import java.util.Arrays;

/**
 * Database type.
 */
public enum DatabaseType {
    
    H2("H2"), MySQL("MySQL"), Oracle("Oracle"), SQLServer("Microsoft SQL Server"), DB2("DB2"), PostgreSQL("PostgreSQL");
    
    private final String productName;
    
    DatabaseType(final String productName) {
        this.productName = productName;
    }

    /**
     * Get database type.
     *
     * @param databaseProductName database product name
     * @return database type
     */
    public static DatabaseType valueFrom(final String databaseProductName) {
        Optional<DatabaseType> databaseTypeOptional = Iterators.tryFind(Arrays.asList(DatabaseType.values()).iterator(), new Predicate<DatabaseType>() {
            @Override
            public boolean apply(final DatabaseType input) {
                return input.productName.equals(databaseProductName);
            }
        });
        if (databaseTypeOptional.isPresent()) {
            return databaseTypeOptional.get();
        } else {
            throw new RuntimeException("Unsupported database:" + databaseProductName);
        }
    }
}