Compare pairwise changed files with their dependency weights

Author: JohT

cypher/GitLog/List_pairwise_changed_files_with_dependencies.cypher

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+// List pair of files that were changed together and that have a declared dependency between each other.
+
+MATCH (firstCodeFile:File)-[dependency:DEPENDS_ON]->(secondCodeFile:File)
+MATCH (firstCodeFile)-[pairwiseChange:CHANGED_TOGETHER_WITH]-(secondCodeFile)
+WHERE elementId(firstCodeFile) < elementId(secondCodeFile)
+ WITH  firstCodeFile.fileName      AS firstFileName
+      ,secondCodeFile.fileName     AS secondFileName
+      ,dependency.weight           AS dependencyWeight
+      ,pairwiseChange.commitCount  AS commitCount
+      ,dependency.fileDistanceAsFewestChangeDirectoryCommands AS fileDistanceAsFewestChangeDirectoryCommands
+RETURN dependencyWeight
+      ,commitCount
+      ,fileDistanceAsFewestChangeDirectoryCommands
+      // ,count(*)                    AS occurrences
+      // ,collect(firstFileName + ' -> ' + secondFileName)[0..3] AS examples
+ORDER BY dependencyWeight, commitCount
+
+// MATCH (firstCodeFile:File)-[dependency:DEPENDS_ON]->(secondCodeFile:File)
+// MATCH (firstCodeFile)-[pairwiseChange:CHANGED_TOGETHER_WITH]-(secondCodeFile)
+// WHERE elementId(firstCodeFile) < elementId(secondCodeFile)
+// RETURN firstCodeFile.fileName  AS firstFileName
+//       ,secondCodeFile.fileName AS secondFileName
+//       ,dependency.weight           AS dependencyWeight
+//       ,pairwiseChange.commitCount  AS commitCount
+// ORDER BY dependencyWeight, commitCount
+
+//  MATCH (g1:!Git&File)-[relation:CHANGED_TOGETHER_WITH|DEPENDS_ON]-(g2:!Git&File) 
+//   WITH count(DISTINCT relation)   AS relatedFilesCount
+//       ,collect(DISTINCT relation) AS relations
+// UNWIND relations AS relation
+//   WITH relatedFilesCount
+//       ,coalesce(relation.commitCount, 0)                                 AS commitCount
+//       ,coalesce(relation.weight, 0)                                      AS dependencyWeight
+//       ,coalesce(relation.fileDistanceAsFewestChangeDirectoryCommands, 0) AS fileDistanceAsFewestChangeDirectoryCommands
+// RETURN dependencyWeight
+//       ,commitCount
+//       ,fileDistanceAsFewestChangeDirectoryCommands
+// ORDER BY dependencyWeight, commitCount