Changeset 17252 for branches/2521_ProblemRefactoring/HeuristicLab.Problems.Instances.QAPLIB/3.3/QAPLIBInstanceProvider.cs

Timestamp:

09/16/19 11:57:18 (5 years ago)

Author:

abeham

Message:

#2521: made QAP problem data readonly

• Also refactored instance providers slightly to specify file extension for importing and exporting data and fixing dialogs

File:

• branches/2521_ProblemRefactoring/HeuristicLab.Problems.Instances.QAPLIB/3.3/QAPLIBInstanceProvider.cs (modified) (2 diffs)

branches/2521_ProblemRefactoring/HeuristicLab.Problems.Instances.QAPLIB/3.3/QAPLIBInstanceProvider.cs

@@ -230 +230 @@
     }
 
-    public override bool CanImportData {
-      get { return true; }
-    }
+    public override IEnumerable<string> ImportFileExtensions => new[] { "dat" };
+    public override bool CanImportData => true;
+
     public override QAPData ImportData(string path) {
       var parser = new QAPLIBParser();
@@ -250 +250 @@
     }
 
+    public override IEnumerable<string> ExportFileExtensions => new[] { "dat" };
+    public override bool CanExportData => true;
+    public override void ExportData(QAPData instance, string path) {
+      using (var writer = new StreamWriter(path, append: false)) {
+        writer.WriteLine(instance.Dimension);
+        writer.WriteLine();
+        WriteMatrix(instance.Weights, writer);
+        writer.WriteLine();
+        WriteMatrix(instance.Distances, writer);
+        writer.WriteLine();
+        writer.Flush();
+      }
+    }
+
+    private static void WriteMatrix(double[,] matrix, StreamWriter writer) {
+      for (var i = 0; i < matrix.GetLength(0); i++) {
+        for (var j = 0; j < matrix.GetLength(1); j++) {
+          writer.Write(matrix[i, j] + " ");
+        }
+        writer.WriteLine();
+      }
+    }
+
     private string GetDescription() {
       return "Embedded instance of plugin version " + Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(AssemblyFileVersionAttribute), true).Cast<AssemblyFileVersionAttribute>().First().Version + ".";