siia.business.FlightEventTransformer.java Source code

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Here is the source code for siia.business.FlightEventTransformer.java

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/*
 * Copyright 2012 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 siia.business;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.integration.annotation.MessageEndpoint;
import org.springframework.util.Assert;

import java.util.Calendar;

/**
 * @author Mark Fisher
 */
@MessageEndpoint
public class FlightEventTransformer {
    private final FlightScheduler flightScheduler;

    @Autowired
    public FlightEventTransformer(FlightScheduler flightScheduler) {
        Assert.notNull(flightScheduler, "flightScheduler must not be null");
        this.flightScheduler = flightScheduler;
    }

    public FlightDelayEvent convertToDelayEvent(String flightNumberAndDelay) {
        String[] splits = flightNumberAndDelay.split("[+]");
        Flight flight = this.flightScheduler.nextFlightForNumber(splits[0]);
        int hours = Integer.parseInt(splits[1].substring(0, 2));
        int minutes = Integer.parseInt(splits[1].substring(2));
        Calendar cal = Calendar.getInstance();
        cal.setTime(flight.getScheduledDeparture());
        cal.add(Calendar.HOUR, hours);
        cal.add(Calendar.MINUTE, minutes);
        return new FlightDelayEvent(flight, cal.getTime());
    }
}