#18 -- Fix selection unique commits

src/main/java/ru/ulstu/extractor/repository/CommitRepository.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright (C) 2021 Anton Romanov - All Rights Reserved
+ * You may use, distribute and modify this code, please write to: romanov73@gmail.com.
+ */
+
 package ru.ulstu.extractor.repository;
 
 import org.springframework.data.domain.Page;
@@ -17,13 +22,13 @@ public interface CommitRepository extends JpaRepository<Commit, Integer> {
     @Query("SELECT c FROM Commit c, Repository r, Branch b WHERE c.branch = b AND r = b.repository AND r = :repository AND b.name = :branchName")
     Page<Commit> findByRepositoryAndBranch(Pageable pageable, @Param("repository") Repository repository, @Param("branchName") String branchName);
 
-    @Query("SELECT new ru.ulstu.extractor.model.CommitAuthorStatistic(c.author.name, COUNT(c)) FROM Commit c GROUP by c.author.name")
+    @Query("SELECT new ru.ulstu.extractor.model.CommitAuthorStatistic(c.author.name, COUNT(DISTINCT c.hash)) FROM Commit c GROUP by c.author.name")
     List<CommitAuthorStatistic> getCommitAuthorStatistic();
 
-    @Query("SELECT new ru.ulstu.extractor.model.CommitUrlStatistic(c.branch.repository.url, COUNT(c)) FROM Commit c GROUP by c.branch.repository.url")
+    @Query("SELECT new ru.ulstu.extractor.model.CommitUrlStatistic(c.branch.repository.url, COUNT(DISTINCT c.hash)) FROM Commit c GROUP by c.branch.repository.url")
     List<CommitUrlStatistic> getCommitUrlStatistic();
 
-    @Query("SELECT new ru.ulstu.extractor.model.CommitTimeStatistic(cast(c.date as date), COUNT(c)) FROM Commit c GROUP by cast(c.date as date) ORDER by cast(c.date as date)")
+    @Query("SELECT new ru.ulstu.extractor.model.CommitTimeStatistic(cast(c.date as date), COUNT(DISTINCT c.hash)) FROM Commit c GROUP by cast(c.date as date) ORDER by cast(c.date as date)")
     List<CommitTimeStatistic> getCommitTimeStatistic();
 
 }