From 30abc015459aecb07ea2e3fba2b4bba52a652f74 Mon Sep 17 00:00:00 2001
From: Matteo Mara <matteo.mara@sonarsource.com>
Date: Wed, 19 Jul 2023 15:32:14 +0200
Subject: SONAR-19372 Add a new issue visitor in order to apply anticipated
 transitions to issues

---
 .../java/org/sonar/core/issue/DefaultIssue.java    | 11 +++++
 .../tracking/AnticipatedTransitionTracker.java     | 51 ++++++++++++++++++++++
 2 files changed, 62 insertions(+)
 create mode 100644 sonar-core/src/main/java/org/sonar/core/issue/tracking/AnticipatedTransitionTracker.java

(limited to 'sonar-core/src/main/java')

diff --git a/sonar-core/src/main/java/org/sonar/core/issue/DefaultIssue.java b/sonar-core/src/main/java/org/sonar/core/issue/DefaultIssue.java
index abfa4154554..32b5154b0b9 100644
--- a/sonar-core/src/main/java/org/sonar/core/issue/DefaultIssue.java
+++ b/sonar-core/src/main/java/org/sonar/core/issue/DefaultIssue.java
@@ -131,6 +131,8 @@ public class DefaultIssue implements Issue, Trackable, org.sonar.api.ce.measure.
 
   private String ruleDescriptionContextKey = null;
 
+  private boolean anticipatedTransitions = false;
+
   @Override
   public String key() {
     return key;
@@ -689,6 +691,15 @@ public class DefaultIssue implements Issue, Trackable, org.sonar.api.ce.measure.
     return this;
   }
 
+  public boolean hasAnticipatedTransitions() {
+    return anticipatedTransitions;
+  }
+
+  public DefaultIssue setAnticipatedTransitions(boolean anticipatedTransitions) {
+    this.anticipatedTransitions = anticipatedTransitions;
+    return this;
+  }
+
   @Override
   public Integer getLine() {
     return line;
diff --git a/sonar-core/src/main/java/org/sonar/core/issue/tracking/AnticipatedTransitionTracker.java b/sonar-core/src/main/java/org/sonar/core/issue/tracking/AnticipatedTransitionTracker.java
new file mode 100644
index 00000000000..d46d3921a85
--- /dev/null
+++ b/sonar-core/src/main/java/org/sonar/core/issue/tracking/AnticipatedTransitionTracker.java
@@ -0,0 +1,51 @@
+/*
+ * SonarQube
+ * Copyright (C) 2009-2023 SonarSource SA
+ * mailto:info AT sonarsource DOT com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+package org.sonar.core.issue.tracking;
+
+import java.util.Collection;
+
+/**
+ * A simplified version of {@link Tracker}, which doesn't use line hash sequences nor block hash sequences and
+ * only has two steps instead of 5 steps.
+ */
+public class AnticipatedTransitionTracker<RAW extends Trackable, BASE extends Trackable> extends AbstractTracker<RAW, BASE> {
+
+  public Tracking<RAW, BASE> track(Collection<RAW> rawInput, Collection<BASE> baseInput) {
+    Tracking<RAW, BASE> tracking = new Tracking<>(rawInput, baseInput);
+
+    // 1. match by rule, line, line hash and message
+    match(tracking, LineAndLineHashAndMessage::new);
+
+    // 2. match issues with same rule, same line and same line hash, but not necessarily with same message
+    match(tracking, LineAndLineHashKey::new);
+
+    // 3. match issues with same rule, same message and same line hash
+    match(tracking, LineHashAndMessageKey::new);
+
+    // 4. match issues with same rule, same line and same message
+    match(tracking, LineAndMessageKey::new);
+
+    // 5. match issues with same rule and same line hash but different line and different message.
+    // See SONAR-2812
+    match(tracking, LineHashKey::new);
+
+    return tracking;
+  }
+}
-- 
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