Merge pull request #66 from it-at-m/1583-VOI_Persistenz

Zwischenstand MDAS-1583

Author: mirrodi

RELEASENOTES.md

@@ -1,6 +1,7 @@
 # Release-Notes
 ## Sprint 29 (20.05.2025 - 10.06.2025)
 - Anbindung VOI (Daten werden für die weitere Aufbereitung vom Provider abgeholt).
+- Erste Version der CSV-Konvertierung
 - Der Source Stand wird wg. Neupriorisierung im Projekt bis auf weiteres eingefroren.
 
  ## Sprint 26 (18.03.2025 - 08.04.2025)

pom.xml

@@ -280,6 +280,12 @@
             <artifactId>spring-boot-starter-webflux</artifactId>
         </dependency>
 
+        <dependency>
+            <groupId>com.opencsv</groupId>
+            <artifactId>opencsv</artifactId>
+            <version>5.11</version>
+        </dependency>
+
     </dependencies>
 
     <build>

src/main/java/de/muenchen/mobidam/mdl/ProcessToCsv.java

@@ -0,0 +1,93 @@
+/*
+ * The MIT License
+ * Copyright © 2024 Landeshauptstadt München | it@M
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package de.muenchen.mobidam.mdl;
+
+import com.opencsv.CSVWriter;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.lang.reflect.Field;
+import java.util.List;
+import lombok.AllArgsConstructor;
+import lombok.extern.log4j.Log4j2;
+import org.apache.camel.Exchange;
+import org.apache.camel.Processor;
+import org.springframework.stereotype.Component;
+
+@Log4j2
+@Component
+@AllArgsConstructor
+/*
+ * TODO:
+ * This class is the first attempt to process the MDS ModelsVehicle objects to a CSV file
+ * with the possibility to define the fields the should be included.
+ * The first next step should be to implement this processor into the EAI route, as the current
+ * version is meant for local testing.
+ * Further criteria could be found in the ticket MDAS-1583.
+ * TODO:
+ * If the project is continued, it would be worth considering how the CSV conversion
+ * can be implemented with Camel Bindy and without the intermediate step of file output and
+ * instead in-memory.
+ */
+public class ProcessToCsv implements Processor {
+
+    private static final String[] INCLUDED_FIELDS = {
+            "provider_id", "device_id", "vehicle_id", "vehicle_type",
+            "propulsion_types", "accessibility_attributes", "battery_capacity", "maximum_speed"
+    };
+
+    private final String outputFilePath = ".";
+
+    @Override
+    public void process(Exchange exchange) throws Exception {
+        List<?> vehicles = exchange.getIn().getBody(List.class);
+
+        if (vehicles == null || vehicles.isEmpty()) {
+            return;
+        }
+
+        try (CSVWriter writer = new CSVWriter(new FileWriter(outputFilePath))) {
+            // Write CSV header
+            writer.writeNext(INCLUDED_FIELDS);
+
+            for (Object vehicle : vehicles) {
+                Class<?> clazz = vehicle.getClass();
+                String[] row = new String[INCLUDED_FIELDS.length];
+
+                for (int i = 0; i < INCLUDED_FIELDS.length; i++) {
+                    try {
+                        Field field = clazz.getDeclaredField(INCLUDED_FIELDS[i]);
+                        field.setAccessible(true);
+                        Object value = field.get(vehicle);
+                        row[i] = value != null ? value.toString() : "";
+                    } catch (NoSuchFieldException e) {
+                        row[i] = ""; // Field not found, leave empty
+                    }
+                }
+
+                writer.writeNext(row);
+            }
+        } catch (IOException e) {
+            throw new RuntimeException("Fehler beim Schreiben der CSV-Datei", e);
+        }
+    }
+}