fix: 使用glob替换like优化查询性能: glob能利用索引但是like不行

qwertyyb · Apr 5, 2023 · cbefa87 · cbefa87
1 parent fd324d6
commit cbefa87
Show file tree

Hide file tree

Showing 2 changed files with 8 additions and 5 deletions.
diff --git a/Fire/CandidatesView.swift b/Fire/CandidatesView.swift
@@ -77,7 +77,7 @@ struct CandidatesView: View {
     @Environment(\.colorScheme) var colorScheme
 
     var _candidatesView: some View {
-        ForEach(Array(candidates.enumerated()), id: \.element) { (index, candidate) -> CandidateView in
+        ForEach(Array(candidates.enumerated()), id: \.offset) { (index, candidate) -> CandidateView in
             CandidateView(
                 candidate: candidate,
                 index: index,

diff --git a/Fire/DictManager.swift b/Fire/DictManager.swift
@@ -50,7 +50,7 @@ class DictManager {
                 text,
                 type, min(query) as query
             from wb_py_dict
-            where query like :queryLike \(
+            where query glob :queryLike \(
                 codeMode == .wubi ? "and type = 'wb'"
                                 : codeMode == .pinyin ? "and type = 'py'" : "")
             group by text
@@ -120,20 +120,21 @@ class DictManager {
         }
 
         if !Defaults[.zKeyQuery] {
-            return origin + "%"
+            return origin + "*"
         }
 
         // z键查询，z不能放在首位
         let first = origin.first!
         return String(first) + (String(origin.suffix(origin.count - 1))
-            .replacingOccurrences(of: "z", with: "_")) + "%"
+            .replacingOccurrences(of: "z", with: "?")) + "*"
     }
 
     func getCandidates(query: String = String(), page: Int = 1) -> (candidates: [Candidate], hasNext: Bool) {
         if query.count <= 0 {
             return ([], false)
         }
-        NSLog("get local candidate, origin: \(query), query: ", query)
+        NSLog("[DictManager] getCandidates origin: \(query)")
+        let startTime = CFAbsoluteTimeGetCurrent()
         let queryLike = getQueryLike(query)
         var candidates: [Candidate] = []
         sqlite3_reset(queryStatement)
@@ -169,6 +170,8 @@ class DictManager {
         if candidates.isEmpty {
             candidates.append(Candidate(code: query, text: query, type: CandidateType.placeholder))
         }
+        let duration = CFAbsoluteTimeGetCurrent() - startTime
+        NSLog("[DictManager] getCandidates query: \(query) , duration: \(duration)")
         return (candidates, hasNext: allCount > count)
     }