example-core/example-api/src/main/java/org/apache/shardingsphere/example/core/api/service/CommonServiceImpl.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.example.core.api.service;


import org.apache.shardingsphere.example.core.api.entity.Order;
import org.apache.shardingsphere.example.core.api.entity.OrderItem;
import org.apache.shardingsphere.example.core.api.repository.OrderItemRepository;
import org.apache.shardingsphere.example.core.api.repository.OrderRepository;
import org.apache.shardingsphere.example.core.api.trace.DatabaseAccess;
import org.apache.shardingsphere.example.core.api.trace.MemoryLogService;
import org.springframework.transaction.annotation.Transactional;

import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

public abstract class CommonServiceImpl implements CommonService {
    
    private MemoryLogService memoryLogService = new MemoryLogService();
    
    @Override
    public MemoryLogService getMemoryLogService() {
        return memoryLogService;
    }
    
    @Override
    public void initEnvironment() throws SQLException {
        getOrderRepository().createTableIfNotExists();
        getOrderItemRepository().createTableIfNotExists();
        getOrderRepository().truncateTable();
        getOrderItemRepository().truncateTable();
    }
    
    @Override
    public void cleanEnvironment() throws SQLException {
        getOrderRepository().dropTable();
        getOrderItemRepository().dropTable();
    }
    
    /**
     * process success.
     */
//    @Transactional
    @Override
    public void processSuccess() throws SQLException {
        System.out.println("-------------- Process Success Begin ---------------");
        List<Long> orderIds = insertData();
        printData();
        deleteData(orderIds);
        printData();
        System.out.println("-------------- Process Success Finish --------------");
    }
    
    /**
     * process failure.
     */
    @Transactional
    @Override
    public void processFailure() throws SQLException {
        System.out.println("-------------- Process Failure Begin ---------------");
        insertData();
        System.out.println("-------------- Process Failure Finish --------------");
        throw new RuntimeException("Exception occur for transaction test.");
    }
    
    @Override
    public List<Long> insertData() throws SQLException {
        System.out.println("---------------------------- Insert Data ----------------------------");
        List<Long> result = new ArrayList<>(10);
        for (int i = 1; i <= 10; i++) {
            Order order = newOrder();
            order.setUserId(i);
            order.setStatus("INSERT_TEST");
            getOrderRepository().insert(order);
            memoryLogService.putOrderData(DatabaseAccess.INSERT, order);
            OrderItem item = newOrderItem();
            item.setOrderId(order.getOrderId());
            item.setUserId(i);
            item.setStatus("INSERT_TEST");
            getOrderItemRepository().insert(item);
            memoryLogService.putItemData(DatabaseAccess.INSERT, item);
            result.add(order.getOrderId());
        }
        return result;
    }
    
    private void deleteData(final List<Long> orderIds) throws SQLException {
        System.out.println("---------------------------- Delete Data ----------------------------");
        for (Long each : orderIds) {
            getOrderRepository().delete(each);
            getOrderItemRepository().delete(each);
        }
    }
    
    @Override
    public void printData() throws SQLException {
        System.out.println("---------------------------- Print Order Data -----------------------");
        for (Order each : getOrderRepository().selectAll()) {
            memoryLogService.putOrderData(DatabaseAccess.SELECT, each);
            System.out.println(each);
        }
        System.out.println("---------------------------- Print OrderItem Data -------------------");
        for (OrderItem each : getOrderItemRepository().selectAll()) {
            memoryLogService.putItemData(DatabaseAccess.SELECT, each);
            System.out.println(each);
        }
    }
    
    protected abstract OrderRepository getOrderRepository();
    
    protected abstract OrderItemRepository getOrderItemRepository();
    
    protected abstract Order newOrder();
    
    protected abstract OrderItem newOrderItem();
}