export almost working

1 files changed, 30 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..239eb6b
--- /dev/null
+++ b/src/main/java/design/persistence/importexport/JSONHandler.java
@@ -0,0 +1,30 @@
+package design.persistence.importexport;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.json.JsonMapper;
+
+import java.io.File;
+import java.io.IOException;
+
+public class JSONHandler implements DataHandler {
+
+    private final DataSource dataSource;
+    private final JsonMapper jsonMapper = new JsonMapper();
+
+    public JSONHandler(DataSource dataSource) {
+        this.dataSource = dataSource;
+    }
+
+    @Override
+    public void importData(File file) throws IOException {
+        JsonNode tree = jsonMapper.readTree(file);
+        dataSource.importData(tree);
+    }
+
+    @Override
+    public void exportData(File file) throws IOException{
+        JsonNode tree = dataSource.exportData();
+        jsonMapper.writerWithDefaultPrettyPrinter().writeValue(file, tree);
+    }
+}
+
+