edu.uiowa.icts.bluebutton.json.DateMinMaxCalculator.java Source code

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Here is the source code for edu.uiowa.icts.bluebutton.json.DateMinMaxCalculator.java

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package edu.uiowa.icts.bluebutton.json;

/*
 * #%L
 * blue-button Spring MVC Web App
 * %%
 * Copyright (C) 2014 - 2015 University of Iowa Institute for Clinical and Translational Science (ICTS)
 * %%
 * 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.
 * #L%
 */

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import org.joda.time.DateTimeComparator;
import org.json.JSONObject;

import com.fasterxml.jackson.annotation.JsonIgnoreProperties;

@JsonIgnoreProperties(ignoreUnknown = true) // ignore unused JSON data
public class DateMinMaxCalculator {

    private List<IDateInMillis> dateInMillisList;

    public DateMinMaxCalculator(List<IDateInMillis> dateInMillisList) {
        this.dateInMillisList = dateInMillisList;
    }

    public Long getMaxTime() {
        if (this.getLongList() != null && this.getLongList().size() > 0) {
            Long max = Collections.max(this.getLongList(), new Comparator<Long>() {
                public int compare(Long l, Long l2) {
                    DateTimeComparator dtc = DateTimeComparator.getInstance();
                    return dtc.compare(l, l2);
                }
            });
            return max;
        }
        return null;
    }

    public Long getMinTime() {
        if (this.getLongList() != null && this.getLongList().size() > 0) {
            Long min = Collections.min(this.getLongList(), new Comparator<Long>() {
                public int compare(Long l, Long l2) {
                    DateTimeComparator dtc = DateTimeComparator.getInstance();
                    return dtc.compare(l, l2);
                }
            });
            return min;
        }
        return null;
    }

    private List<Long> getLongList() {
        List<Long> list = new ArrayList<Long>();
        if (this.dateInMillisList != null) {
            for (IDateInMillis i : this.dateInMillisList) {
                if (i.getDateInMillis() != null) {
                    list.add(i.getDateInMillis());
                }
                if (i.getEndDateInMillis() != null) {
                    list.add(i.getEndDateInMillis());
                }
                if (i.getStartDateInMillis() != null) {
                    list.add(i.getStartDateInMillis());
                }
            }
            return list;
        }
        return null;
    }

}