Merge pull request #19 from RIT-SWEN-262/import-export

Import export

1 files changed, 35 insertions, 0 deletions

diff --git a/src/main/java/design/persistence/importexport/JSONHandler.java b/src/main/java/design/persistence/importexport/JSONHandler.java
new file mode 100644
index 0000000..9c04281
--- /dev/null
+++ b/src/main/java/design/persistence/importexport/JSONHandler.java
@@ -0,0 +1,35 @@
+package design.persistence.importexport;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.json.JsonMapper;
+import design.persistence.Serializers;
+
+import java.io.File;
+import java.io.IOException;
+
+public class JSONHandler implements DataHandler {
+
+    private final DataSource dataSource;
+    private final ObjectMapper jsonMapper = new JsonMapper();
+
+    public JSONHandler(DataSource dataSource) {
+        this.dataSource = dataSource;
+
+        Serializers.configureMapper(jsonMapper);
+        jsonMapper.registerModule(dataSource.getJacksonModule());
+    }
+
+    @Override
+    public void importData(File file) throws IOException {
+        Object data = jsonMapper.readValue(file, dataSource.getTargetClass());
+        dataSource.importData(data);
+    }
+
+    @Override
+    public void exportData(File file) throws IOException{
+        Object data = dataSource.exportData();
+        jsonMapper.writer(new Serializers.CustomPrettyPrinter())
+                .writeValue(file, data);
+    }
+}
+
+