Add reports for frequently changed files

Author: JohT

cypher/GitLog/List_pairwise_changed_files.cypher

@@ -14,7 +14,7 @@ RETURN firstFileName
       ,firstFile.extension                                    AS firstFileExtension
       ,secondFile.extension                                   AS secondFileExtension
       ,firstFile.extension + '↔' + secondFile.extension       AS fileExtensionPair
-      ,toInteger(pairwiseChange.updateCommitCount)            AS updateCommitCount
+      ,pairwiseChange.updateCommitCount                       AS updateCommitCount
       ,pairwiseChange.updateCommitMinConfidence               AS updateCommitMinConfidence
       ,pairwiseChange.updateCommitSupport                     AS updateCommitSupport
       ,pairwiseChange.updateCommitLift                        AS updateCommitLift

cypher/GitLog/List_pairwise_changed_files_top_count.cypher

@@ -0,0 +1,18 @@
+// List top pairs of files that were changed together by their commit count. Requires Add_CHANGED_TOGETHER_WITH_relationships_to_git_files.cypher to run first.
+
+MATCH (firstFile:Git:File)-[pairwiseChange:CHANGED_TOGETHER_WITH]-(secondFile:Git:File)
+WHERE elementId(firstFile) < elementId(secondFile)
+ WITH *
+     ,coalesce(firstFile.relativePath, firstFile.fileName)    AS firstFileName
+     ,coalesce(secondFile.relativePath, secondFile.fileName)  AS secondFileName
+RETURN firstFile.name   AS firstFileNameShort
+      ,secondFile.name  AS secondFileNameShort
+      ,firstFileName
+      ,secondFileName
+      ,pairwiseChange.updateCommitCount                       AS updateCommitCount
+      ,pairwiseChange.updateCommitMinConfidence               AS updateCommitMinConfidence
+      ,pairwiseChange.updateCommitSupport                     AS updateCommitSupport
+      ,pairwiseChange.updateCommitLift                        AS updateCommitLift
+      ,pairwiseChange.updateCommitJaccardSimilarity           AS updateCommitJaccardSimilarity
+ORDER BY updateCommitCount DESC
+LIMIT 50

cypher/GitLog/List_pairwise_changed_files_top_jaccard.cypher

@@ -0,0 +1,18 @@
+// List top pairs of files that were changed together by their commit jaccard similarity (0: never change together, 1: always change together). Requires Add_CHANGED_TOGETHER_WITH_relationships_to_git_files.cypher to run first.
+
+MATCH (firstFile:Git:File)-[pairwiseChange:CHANGED_TOGETHER_WITH]-(secondFile:Git:File)
+WHERE elementId(firstFile) < elementId(secondFile)
+ WITH *
+     ,coalesce(firstFile.relativePath, firstFile.fileName)    AS firstFileName
+     ,coalesce(secondFile.relativePath, secondFile.fileName)  AS secondFileName
+RETURN firstFile.name   AS firstFileNameShort
+      ,secondFile.name  AS secondFileNameShort
+      ,firstFileName
+      ,secondFileName
+      ,pairwiseChange.updateCommitJaccardSimilarity           AS updateCommitJaccardSimilarity
+      ,pairwiseChange.updateCommitCount                       AS updateCommitCount
+      ,pairwiseChange.updateCommitLift                        AS updateCommitLift
+      ,pairwiseChange.updateCommitMinConfidence               AS updateCommitMinConfidence
+      ,pairwiseChange.updateCommitSupport                     AS updateCommitSupport
+ORDER BY updateCommitJaccardSimilarity DESC
+LIMIT 50

cypher/GitLog/List_pairwise_changed_files_top_lift.cypher

@@ -0,0 +1,18 @@
+// List top pairs of files that were changed together by their commit lift (>1: changes more often than by random chance). Requires Add_CHANGED_TOGETHER_WITH_relationships_to_git_files.cypher to run first.
+
+MATCH (firstFile:Git:File)-[pairwiseChange:CHANGED_TOGETHER_WITH]-(secondFile:Git:File)
+WHERE elementId(firstFile) < elementId(secondFile)
+ WITH *
+     ,coalesce(firstFile.relativePath, firstFile.fileName)    AS firstFileName
+     ,coalesce(secondFile.relativePath, secondFile.fileName)  AS secondFileName
+RETURN firstFile.name   AS firstFileNameShort
+      ,secondFile.name  AS secondFileNameShort
+      ,firstFileName
+      ,secondFileName
+      ,pairwiseChange.updateCommitLift                        AS updateCommitLift
+      ,pairwiseChange.updateCommitCount                       AS updateCommitCount
+      ,pairwiseChange.updateCommitMinConfidence               AS updateCommitMinConfidence
+      ,pairwiseChange.updateCommitSupport                     AS updateCommitSupport
+      ,pairwiseChange.updateCommitJaccardSimilarity           AS updateCommitJaccardSimilarity
+ORDER BY updateCommitLift DESC
+LIMIT 50