TotalColumnAggregation.java

/*
 * Copyright (c) 2016 Haulmont
 *
 * 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.haulmont.timesheets.gui.weeklytimesheets;

import com.haulmont.cuba.gui.data.aggregation.AggregationStrategy;
import com.haulmont.timesheets.global.HoursAndMinutes;
import com.haulmont.timesheets.global.StringFormatHelper;

import java.util.Collection;

/**
 * @author gorelov
 */
public class TotalColumnAggregation implements AggregationStrategy<String, String> {

    @Override
    public String aggregate(Collection<String> propertyValues) {
        HoursAndMinutes total = new HoursAndMinutes();
        for (String time : propertyValues) {
            total.add(HoursAndMinutes.fromString(time));
        }
        return StringFormatHelper.getWeekAggregationString(total);
    }

    @Override
    public Class<String> getResultClass() {
        return String.class;
    }
}