REFAC: Implemented otb::ImageMetadata::append

Modules/Core/Metadata/include/otbImageMetadata.h

@@ -232,7 +232,8 @@ public:
   /** Extract metadata from a subset of the bands */
   ImageMetadata slice(int start, int end);
 
-  /** concatenate with an other ImageMetadata */
+  /** concatenate with an other ImageMetadata
+   * If a key exists in bot ImageMetadata, keeps the value of this ImageMetadata.*/
   void append(const ImageMetadata& );
 
   /** if all bands share the same value of a key, put it at top level */

Modules/Core/Metadata/src/otbImageMetadata.cxx

@@ -292,9 +292,18 @@ ImageMetadata ImageMetadata::slice(int start, int end)
 }
 
 /** concatenate with an other ImageMetadata */
-void ImageMetadata::append(const ImageMetadata& )
+void ImageMetadata::append(const ImageMetadata& imd)
 {
-  // TODO
+  // Copy the keys
+  this->GeometryKeys.insert(imd.GeometryKeys.begin(), imd.GeometryKeys.end());
+  this->NumericKeys.insert(imd.NumericKeys.begin(), imd.NumericKeys.end());
+  this->StringKeys.insert(imd.StringKeys.begin(), imd.StringKeys.end());
+  this->LUT1DKeys.insert(imd.LUT1DKeys.begin(), imd.LUT1DKeys.end());
+  this->LUT2DKeys.insert(imd.LUT2DKeys.begin(), imd.LUT2DKeys.end());
+  this->TimeKeys.insert(imd.TimeKeys.begin(), imd.TimeKeys.end());
+  this->ExtraKeys.insert(imd.ExtraKeys.begin(), imd.ExtraKeys.end());
+  // Copy the bands
+  this->Bands.insert(this->Bands.end(), imd.Bands.begin(), imd.Bands.end());
 }
 
 /** if all bands share the same value of a key, put it at top level */

Modules/Core/Metadata/test/otbImageMetadataTest.cxx

@@ -191,6 +191,15 @@ int otbImageMetadataTest(int argc, char* argv[])
   md3 = md2.slice(0, 1);
   outfile << "md3: "<< md3 << "\n";
 
+  ImageMetadata md4;
+  md4.Add(MDStr::SensorID, "PHR");
+  md4.Add(MDStr::ProductType, "Official");
+  md4.Add(std::string("Comment"), std::string("Test append"));
+  bmd.Add(MDStr::BandName, "B4");
+  md4.Bands.push_back(bmd);
+  md3.append(md4);
+  outfile << "md3_append: "<< md3 << "\n";
+
   outfile.close();
   return EXIT_SUCCESS;
 }