added implementation for scene status update

gms-utils/gms-db-utils/src/main/java/de/potsdam/gfz/gms/DbUtils.java

@@ -83,7 +83,72 @@ public class DbUtils {
 		dstDb.commit();
 	}
 
-	private static void transferSceneState() throws IOException {
+	private static void transferSceneState() throws IOException, SQLException {
+		// establish connections
+		Connection srcDb = getSrcDb();
+		Connection dstDb = getDstDb();
+
+		// reset proc_level to metadata for all scenes in dst db
+		dstDb.prepareStatement("update scenes set proc_level='METADATA'::proc_level;").executeUpdate();
+
+		PreparedStatement updateScene = dstDb.prepareStatement("update scenes set proc_level='DOWNLOADED'::proc_level, filename=? where entityid=? and datasetid=?;");
+		PreparedStatement updateSentinelScene = dstDb.prepareStatement("update scenes set proc_level='DOWNLOADED'::proc_level, entityid=? where filename=? and datasetid=?;");
+
+		// get list of downloaded scenes from src database
+		ResultSet rs = srcDb.prepareStatement("select filename, entityid, datasetid from scenes where proc_level='DOWNLOADED'::proc_level;").executeQuery();
+
+		int count = 0;
+
+		while (rs.next()) {
+			String filename = rs.getString(1);
+			String entityid = rs.getString(2);
+			short datasetid = rs.getShort(3);
+
+			// transform datasetids
+			datasetid = transformDatasetid(datasetid);
+
+			if (datasetid == 249) {
+				// sentinel scene update
+				updateSentinelScene.setString(1, entityid);
+				updateSentinelScene.setString(2, filename);
+				updateSentinelScene.setShort(3, datasetid);
+				updateSentinelScene.executeUpdate();
+			} else {
+				updateScene.setString(1, filename);
+				updateScene.setString(2, entityid);
+				updateScene.setShort(3, datasetid);
+				updateScene.executeUpdate();
+			}
+
+			if (++count % 100 == 0) {
+				System.out.print("updated " + count + " scenes      \r");
+				dstDb.commit();
+			}
+		}
+
+		System.out.print("done. updated " + count + " scenes        ");
+
+	}
+
+	/**
+	 * @param datasetid
+	 * @return
+	 */
+	private static short transformDatasetid(short datasetid) {
+		switch (datasetid) {
+		case 104:
+			// L8
+			return 250;
+		case 112:
+		case 113:
+			// L7 etm
+			return 251;
+		case 108:
+			// l4-5 tm
+			return 252;
+		default:
+			return datasetid;
+		}
 	}
 
 	private static final String	SRC_DB_PROPS_KEY_PREFIX		= "src_db_";