io.tracee.contextlogger.utility.PassedContextDataElementWrapperComparator Maven / Gradle / Ivy

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Please refer to https://github.com/tracee/contextlogger.

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package io.tracee.contextlogger.utility;

import java.util.Comparator;

public final class PassedContextDataElementWrapperComparator implements Comparator {

    @Override
    public int compare(PassedContextDataElementWrapper o1, PassedContextDataElementWrapper o2) {
        if (o1 == null && o2 == null) {
            return 0;
        } else if (o1 == null) {
            return -1;
        } else if (o2 == null) {
            return 1;
        } else {

            if (o1.getOrder() == null && o2.getOrder() == null) {

                // must compare names
                return compareNames(o1.getNameObjectValuePair().getName(), o2.getNameObjectValuePair().getName());

            } else if (o1.getOrder() == null) {
                return 1;
            } else if (o2.getOrder() == null) {
                return -1;
            } else {

                int orderCompareResult = o1.getOrder().compareTo(o2.getOrder());
                if (orderCompareResult == 0) {
                    // must compare names
                    return compareNames(o1.getNameObjectValuePair().getName(), o2.getNameObjectValuePair().getName());
                } else {
                    return orderCompareResult;
                }
            }
        }
    }

    public int compareNames(String s1, String s2) {

        if (s1 == null && s2 == null) {
            return 0;
        } else if (s1 == null) {
            return -1;
        } else if (s2 == null) {
            return 1;
        } else {
            return s1.compareTo(s2);
        }
    }
}