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package org.apidesign.apifest08.currency;
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import java.util.Date;
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/**
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* Date util helper class.
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* @author ked
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*/
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final class DateUtil {
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private DateUtil() {};
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static boolean isInRange(Date instant, Date from, Date till) {
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if ((from == null || instant.equals(from) || instant.after(from)) &&
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(till == null || instant.before(till))) {
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return true;
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} else {
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return false;
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}
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}
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static boolean isRangesOverlapping(Date fromA, Date tillA, Date fromB, Date tillB) {
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if ((fromA == null && tillA == null) || (fromB == null && tillB == null)) {
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return true;
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}
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if (fromA != null && isInRange(fromA, fromB, tillB)) {
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return true;
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}
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if (tillA != null && !tillA.equals(fromB) && isInRange(tillA, fromB, tillB)) {
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return true;
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}
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if (fromB != null && isInRange(fromB, fromA, tillA)) {
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return true;
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}
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if (tillB != null && !tillB.equals(fromA) && isInRange(tillB, fromA, tillA)) {
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return true;
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}
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return false;
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}
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static Date getRangesIntersectionBottom(Date fromA, Date fromB) {
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if (fromA == null) {
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return fromB;
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}
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if (fromB == null) {
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return fromA;
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}
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if (fromA.after(fromB)) {
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return fromA;
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} else {
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return fromB;
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}
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}
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static Date getRangesIntersectionTop(Date tillA, Date tillB) {
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if (tillA == null) {
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return tillB;
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}
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if (tillB == null) {
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return tillA;
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}
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if (tillA.before(tillB)) {
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return tillA;
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} else {
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return tillB;
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}
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}
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}
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