com.apress.prospringintegration.springenterprise.stocks.transactions.template.TransactionalStockBrokerService.java Source code

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Here is the source code for com.apress.prospringintegration.springenterprise.stocks.transactions.template.TransactionalStockBrokerService.java

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/*
 * Copyright 2002-2011 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
 *
 *      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.apress.prospringintegration.springenterprise.stocks.transactions.template;

import com.apress.prospringintegration.springenterprise.stocks.dao.StockBrokerService;
import com.apress.prospringintegration.springenterprise.stocks.dao.StockDao;
import com.apress.prospringintegration.springenterprise.stocks.model.Stock;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;
import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.support.TransactionCallbackWithoutResult;
import org.springframework.transaction.support.TransactionTemplate;

import java.util.Calendar;
import java.util.Random;

@Component
public class TransactionalStockBrokerService implements StockBrokerService {
    @Autowired
    @Qualifier("transactionTemplate")
    private TransactionTemplate transactionTemplate;

    @Autowired
    @Qualifier("jdbcTemplateStockDao")
    private StockDao stockDao;

    // inserts at least 25% duplicate inventory code.
    public void preFillStocks(final String exchangeId, final String... symbols) {
        final Random random = new Random();

        transactionTemplate.execute(new TransactionCallbackWithoutResult() {
            protected void doInTransactionWithoutResult(TransactionStatus status) {
                int i = 0;
                for (String sym : symbols) {
                    float pp = (float) Math.random() * 100.0f;
                    int qq = (int) Math.random() * 250;
                    Stock s = new Stock(sym, "INV00" + i, exchangeId, pp, qq, Calendar.getInstance().getTime());
                    stockDao.insert(s);
                    System.out.println("ORIG INVENTORY: " + s.getInventoryCode() + " ");
                    int randomized = (random.nextInt(100) % 4) == 0 ? 0 : i;
                    s.setInventoryCode("INV00" + randomized);
                    System.out.println("NEW RANDOMIZED INVENTORY:" + s.getInventoryCode() + " " + randomized);
                    stockDao.update(s);
                    i++;
                }
            }
        });
    }
}