From 1c6d2b037844239b907adfe3882d2cc41a99a3d3 Mon Sep 17 00:00:00 2001
From: Junjie <fallin.jie@qq.com>
Date: 星期三, 06 五月 2026 17:18:16 +0800
Subject: [PATCH] #dfs
---
src/main/java/com/zy/common/utils/NavigateUtils.java | 73 ++++++++++++++++++++++++++++++++++--
1 files changed, 68 insertions(+), 5 deletions(-)
diff --git a/src/main/java/com/zy/common/utils/NavigateUtils.java b/src/main/java/com/zy/common/utils/NavigateUtils.java
index fa567ae..733a2ab 100644
--- a/src/main/java/com/zy/common/utils/NavigateUtils.java
+++ b/src/main/java/com/zy/common/utils/NavigateUtils.java
@@ -127,6 +127,13 @@
resolvedPolicy == null ? null : resolvedPolicy.getDefaultProfileCode(),
elapsedMillis(totalStartNs));
StationPathRuntimeSnapshot runtimeSnapshot = loadStationPathRuntimeSnapshot(currentTaskNo);
+ List<NavigateNode> shortFallbackPath = buildRerouteShortFallbackPath(
+ startStationId,
+ endStationId,
+ currentTaskNo,
+ resolvedPolicy,
+ runtimeSnapshot
+ );
StationPathSearchContext context = buildStationPathSearchContext(
startStationId,
endStationId,
@@ -135,9 +142,15 @@
runtimeSnapshot
);
if (context.allList.isEmpty()) {
- log.warn("绔欑偣璺緞鍊欓�夎绠楃粨鏉燂紝鍘熷洜=empty_search_context锛宻tartStationId={}锛宔ndStationId={}锛宼askNo={}锛宼otalCostMs={}",
- startStationId, endStationId, currentTaskNo, elapsedMillis(totalStartNs));
- return new ArrayList<>();
+ List<List<NavigateNode>> fallbackCandidateList = normalizeCandidatePaths(Collections.singletonList(shortFallbackPath));
+ log.warn("绔欑偣璺緞鍊欓�夎绠楃粨鏉燂紝鍘熷洜=empty_search_context锛宻tartStationId={}锛宔ndStationId={}锛宼askNo={}锛宖allbackCandidateCount={}锛宖allbackPath={}锛宼otalCostMs={}",
+ startStationId,
+ endStationId,
+ currentTaskNo,
+ fallbackCandidateList.size(),
+ JSON.toJSONString(extractStationIdList(shortFallbackPath)),
+ elapsedMillis(totalStartNs));
+ return fallbackCandidateList;
}
long orderStartNs = System.nanoTime();
@@ -150,13 +163,15 @@
endStationId,
runtimeSnapshot
);
- List<List<NavigateNode>> normalizedPathList = normalizeCandidatePaths(orderedPathList);
- log.info("绔欑偣璺緞鍊欓�夎绠楃粨鏉燂紝startStationId={}锛宔ndStationId={}锛宼askNo={}锛宺awCandidateCount={}锛宱rderedPathCount={}锛宯ormalizedPathCount={}锛宱rderCostMs={}锛宼otalCostMs={}",
+ List<List<NavigateNode>> candidatePathList = appendShortFallbackCandidate(orderedPathList, shortFallbackPath);
+ List<List<NavigateNode>> normalizedPathList = normalizeCandidatePaths(candidatePathList);
+ log.info("绔欑偣璺緞鍊欓�夎绠楃粨鏉燂紝startStationId={}锛宔ndStationId={}锛宼askNo={}锛宺awCandidateCount={}锛宱rderedPathCount={}锛宖allbackPathLen={}锛宯ormalizedPathCount={}锛宱rderCostMs={}锛宼otalCostMs={}",
startStationId,
endStationId,
currentTaskNo,
context.allList.size(),
orderedPathList == null ? null : orderedPathList.size(),
+ shortFallbackPath == null ? 0 : shortFallbackPath.size(),
normalizedPathList.size(),
elapsedMillis(orderStartNs),
elapsedMillis(totalStartNs));
@@ -447,6 +462,54 @@
return DirectPathSearchResult.empty(includeWaypoint, includeSoftPreference);
}
+ private List<NavigateNode> buildRerouteShortFallbackPath(Integer startStationId,
+ Integer endStationId,
+ Integer currentTaskNo,
+ StationPathResolvedPolicy resolvedPolicy,
+ StationPathRuntimeSnapshot runtimeSnapshot) {
+ long startNs = System.nanoTime();
+ try {
+ List<NavigateNode> path = findStationDirectPath(
+ startStationId,
+ endStationId,
+ currentTaskNo,
+ 0.0d,
+ StationPathCalcMode.OPTIMAL,
+ resolvedPolicy,
+ runtimeSnapshot
+ );
+ List<NavigateNode> normalizedPath = normalizeStationPath(path);
+ log.info("绔欑偣璺緞鍫靛閲嶈鍒掔煭璺緞淇濆簳璁＄畻瀹屾垚锛宻tartStationId={}锛宔ndStationId={}锛宼askNo={}锛宲athLen={}锛宲ath={}锛宑ostMs={}",
+ startStationId,
+ endStationId,
+ currentTaskNo,
+ normalizedPath.size(),
+ JSON.toJSONString(extractStationIdList(normalizedPath)),
+ elapsedMillis(startNs));
+ return normalizedPath;
+ } catch (Exception e) {
+ log.warn("绔欑偣璺緞鍫靛閲嶈鍒掔煭璺緞淇濆簳璁＄畻澶辫触锛宻tartStationId={}锛宔ndStationId={}锛宼askNo={}锛宑ostMs={}锛宔rror={}",
+ startStationId,
+ endStationId,
+ currentTaskNo,
+ elapsedMillis(startNs),
+ e.toString());
+ return new ArrayList<>();
+ }
+ }
+
+ private List<List<NavigateNode>> appendShortFallbackCandidate(List<List<NavigateNode>> orderedPathList,
+ List<NavigateNode> shortFallbackPath) {
+ List<List<NavigateNode>> candidatePathList = new ArrayList<>();
+ if (orderedPathList != null && !orderedPathList.isEmpty()) {
+ candidatePathList.addAll(orderedPathList);
+ }
+ if (shortFallbackPath != null && !shortFallbackPath.isEmpty()) {
+ candidatePathList.add(shortFallbackPath);
+ }
+ return candidatePathList;
+ }
+
private List<NavigateNode> searchDirectPath(DirectStationPathContext context,
boolean includeWaypoint,
boolean includeSoftPreference) {
--
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