export almost working

1 files changed, 34 insertions, 0 deletions

diff --git a/src/main/java/design/persistence/importexport/XMLHandler.java b/src/main/java/design/persistence/importexport/XMLHandler.java
new file mode 100644
index 0000000..1a16b90
--- /dev/null
+++ b/src/main/java/design/persistence/importexport/XMLHandler.java
@@ -0,0 +1,34 @@
+package design.persistence.importexport;
+import java.io.File;
+import java.io.IOException;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.fasterxml.jackson.dataformat.xml.XmlMapper;
+
+public class XMLHandler implements DataHandler {
+
+    private final DataSource dataSource;
+    private final XmlMapper xmlMapper = new XmlMapper();
+
+    public XMLHandler(DataSource dataSource) {
+        this.dataSource = dataSource;
+    }
+
+    @Override
+    public void importData(File file) throws IOException {
+        JsonNode tree = xmlMapper.readTree(file);
+        JsonNode unwrapped = tree.get("items");
+        dataSource.importData(unwrapped);
+    }
+
+    @Override
+    public void exportData(File file) throws IOException {
+        JsonNode tree = dataSource.exportData();
+        ObjectNode wrapper = xmlMapper.createObjectNode();
+        wrapper.set("items", tree);
+        xmlMapper.writerWithDefaultPrettyPrinter().withRootName("export").writeValue(file, wrapper);
+    }
+}
+
+