From 6eb7c68a18208206d01b28a1044506df66aee4b3 Mon Sep 17 00:00:00 2001
From: ArgonarioD <arnordorian@sina.com>
Date: Sun, 3 Jul 2022 19:59:07 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E4=BA=86TimeUtils=E5=B7=A5?=
 =?UTF-8?q?=E5=85=B7=E7=B1=BB?=
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---
 .../projectmanagement/entity/Project.java     |  1 +
 .../projectmanagement/utils/TimeUtils.java    | 38 +++++++++++++++++++
 2 files changed, 39 insertions(+)
 create mode 100644 src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/utils/TimeUtils.java

diff --git a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/entity/Project.java b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/entity/Project.java
index 5f3be2f..7265f8b 100644
--- a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/entity/Project.java
+++ b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/entity/Project.java
@@ -18,6 +18,7 @@ public class Project {
     @TableId(type = IdType.AUTO)
     private Integer projectId;
     private String projectName;
+    //TODO: 时间线顺序判断
     private LocalDate projectStartTime;
     private LocalDate projectOnlineTime;
     private LocalDate projectFirstTestTime;
diff --git a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/utils/TimeUtils.java b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/utils/TimeUtils.java
new file mode 100644
index 0000000..5cefa29
--- /dev/null
+++ b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/utils/TimeUtils.java
@@ -0,0 +1,38 @@
+package cn.edu.hfut.rmdjzz.projectmanagement.utils;
+
+import java.time.Instant;
+import java.time.temporal.TemporalAccessor;
+
+/**
+ * @author 佘语殊
+ * @since 2022/7/2 9:13
+ */
+public class TimeUtils {
+    /**
+     * 验证参数是否按时间线先后顺序传入，忽略null
+     */
+    public static boolean validateTimeLine(TemporalAccessor... temporalAccessors) {
+        int first;
+        for (first = 0; first < temporalAccessors.length; first++) {
+            if (temporalAccessors[first] != null) {
+                break;
+            }
+        }
+        if (first >= temporalAccessors.length - 1) {
+            return true;
+        }
+        Instant last = Instant.from(temporalAccessors[first]);
+        Instant current;
+        for (int i = first + 1; i < temporalAccessors.length; i++) {
+            if (temporalAccessors[i] == null) {
+                continue;
+            }
+            current = Instant.from(temporalAccessors[i]);
+            if (last.isAfter(current)) {
+                return false;
+            }
+            last = current;
+        }
+        return true;
+    }
+}