com.aurel.track.fieldType.runtime.base.CustomSelectComparable.java Source code

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Here is the source code for com.aurel.track.fieldType.runtime.base.CustomSelectComparable.java

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/**
 * Genji Scrum Tool and Issue Tracker
 * Copyright (C) 2015 Steinbeis GmbH & Co. KG Task Management Solutions
    
 * <a href="http://www.trackplus.com">Genji Scrum Tool</a>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

/* $Id:$ */

package com.aurel.track.fieldType.runtime.base;

import java.io.Serializable;
import java.util.Iterator;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;

import org.apache.commons.lang3.exception.ExceptionUtils;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.LogManager;

/**
 * Class for sorting the simple custom list entries
 * The sortOrder is not enough because we can't be sure that only one list is involved for this field in different contexts
 * The sortOrder is local in a list, so it can happen that two entries from different lists have the same sortOrder, consequently
 * by sorting/grouping the different values might be mixed just because they have the same sortOrder
 * TODO we do not take into account multiple selections. For multiple selections always the minimal value is taken see CustomSelectBaseRT
 * @author Tamas
 *
 */
public class CustomSelectComparable implements Comparable, Serializable {

    private static final long serialVersionUID = 1L;
    private static final Logger LOGGER = LogManager.getLogger(CustomSelectComparable.class);
    public static Integer COMPARABLE_LIST = new Integer(1);
    public static Integer COMPARABLE_SORTORDER = new Integer(2);
    //sorted because first compare the list and then the sortOrderValue
    private SortedMap<Integer, Comparable> comparableMap = new TreeMap<Integer, Comparable>();

    public CustomSelectComparable(SortedMap<Integer, Comparable> comparableMap) {
        super();
        this.comparableMap = comparableMap;

    }

    public Map<Integer, Comparable> getComparableMap() {
        return comparableMap;
    }

    @Override
    public int compareTo(Object o) {
        CustomSelectComparable compositeComparable = (CustomSelectComparable) o;
        Map<Integer, Comparable> paramComparableMap = compositeComparable.getComparableMap();
        if ((comparableMap == null) && (paramComparableMap == null)) {
            return 0;
        }
        if (comparableMap == null) {
            return -1;
        }
        if (paramComparableMap == null) {
            return 1;
        }
        Iterator<Integer> itrComparableMap = comparableMap.keySet().iterator();
        while (itrComparableMap.hasNext()) {
            Integer key = itrComparableMap.next();
            Comparable value0 = comparableMap.get(key);
            Comparable value1 = paramComparableMap.get(key);
            if ((value0 == null) && (value1 == null)) {
                return 0;
            }
            if (value0 == null) {
                return -1;
            }
            if (value1 == null) {
                return 1;
            }
            try {
                int compareResult = value0.compareTo(value1);
                if (compareResult != 0) {
                    //return now only if the part if different
                    return compareResult;
                }
            } catch (Exception e) {
                LOGGER.warn("Sorting the values " + value0 + " of class " + value0.getClass().getName() + " and "
                        + value1 + " of class " + value1.getClass().getName() + " failed with " + e.getMessage());
                LOGGER.debug(ExceptionUtils.getStackTrace(e));
            }
        }
        return 0;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null) {
            return false;
        }
        if (!(obj instanceof CustomSelectComparable)) {
            return false;
        }
        if (compareTo(obj) == 0) {
            return true;
        }
        return false;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        if (comparableMap != null) {
            Iterator<Integer> itrComparableMap = comparableMap.keySet().iterator();
            while (itrComparableMap.hasNext()) {
                Integer key = itrComparableMap.next();
                Comparable value0 = comparableMap.get(key);
                result = prime * result + ((value0 == null) ? 0 : value0.hashCode());
            }
        } else {
            result = prime * result;
        }
        return result;
    }
}