Example usage for org.jfree.data KeyedValue getKey

Introduction

In this page you can find the example usage for org.jfree.data KeyedValue getKey.

Prototype

public Comparable getKey();

Source Link

Document

Returns the key associated with the value.

Usage

From source file:org.jfree.data.KeyedValueComparator.java

/**
 * Compares two {@link KeyedValue} instances and returns an
 * <code>int</code> that indicates the relative order of the two objects.
 *
 * @param o1  object 1.// ww w.j a  v a2s.c  om
 * @param o2  object 2.
 *
 * @return An int indicating the relative order of the objects.
 */
@Override
public int compare(Object o1, Object o2) {

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

    int result;

    KeyedValue kv1 = (KeyedValue) o1;
    KeyedValue kv2 = (KeyedValue) o2;

    if (this.type == KeyedValueComparatorType.BY_KEY) {
        if (this.order.equals(SortOrder.ASCENDING)) {
            result = kv1.getKey().compareTo(kv2.getKey());
        } else if (this.order.equals(SortOrder.DESCENDING)) {
            result = kv2.getKey().compareTo(kv1.getKey());
        } else {
            throw new IllegalArgumentException("Unrecognised sort order.");
        }
    } else if (this.type == KeyedValueComparatorType.BY_VALUE) {
        Number n1 = kv1.getValue();
        Number n2 = kv2.getValue();
        if (n2 == null) {
            return -1;
        }
        if (n1 == null) {
            return 1;
        }
        double d1 = n1.doubleValue();
        double d2 = n2.doubleValue();
        if (this.order.equals(SortOrder.ASCENDING)) {
            if (d1 > d2) {
                result = 1;
            } else if (d1 < d2) {
                result = -1;
            } else {
                result = 0;
            }
        } else if (this.order.equals(SortOrder.DESCENDING)) {
            if (d1 > d2) {
                result = -1;
            } else if (d1 < d2) {
                result = 1;
            } else {
                result = 0;
            }
        } else {
            throw new IllegalArgumentException("Unrecognised sort order.");
        }
    } else {
        throw new IllegalArgumentException("Unrecognised type.");
    }

    return result;
}

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