1 files changed, 79 insertions, 0 deletions
diff --git a/container-search/src/main/java/com/yahoo/search/query/textserialize/serializer/Serializer.java b/container-search/src/main/java/com/yahoo/search/query/textserialize/serializer/Serializer.java
new file mode 100644
index 00000000000..e8352254551
--- /dev/null
+++ b/container-search/src/main/java/com/yahoo/search/query/textserialize/serializer/Serializer.java
@@ -0,0 +1,79 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.search.query.textserialize.serializer;
+
+import com.yahoo.prelude.query.Item;
+import com.yahoo.search.query.textserialize.item.ItemExecutorRegistry;
+
+import java.util.List;
+import java.util.Map;
+
+import static com.yahoo.search.query.textserialize.item.ListUtil.butFirst;
+import static com.yahoo.search.query.textserialize.item.ListUtil.first;
+
+/**
+ * @author tonytv
+ */
+class Serializer {
+    static String serialize(Object child, ItemIdMapper itemIdMapper) {
+        if (child instanceof DispatchForm) {
+            return ((DispatchForm) child).serialize(itemIdMapper);
+        } else if (child instanceof Item) {
+            return serializeItem((Item) child, itemIdMapper);
+        } else if (child instanceof String) {
+            return serializeString((String) child);
+        } else if (child instanceof Number) {
+            return child.toString();
+        } else if (child instanceof Map) {
+            return serializeMap((Map<?, ?>)child, itemIdMapper);
+        } else if (child instanceof List) {
+            return serializeList((List<?>)child, itemIdMapper);
+        } else {
+            throw new IllegalArgumentException("Can't serialize type " + child.getClass());
+        }
+    }
+
+    private static String serializeString(String string) {
+        return '"' + string.replace("\\", "\\\\").replace("\"", "\\\"") + '"';
+    }
+
+    static String serializeList(List<?> list, ItemIdMapper itemIdMapper) {
+        StringBuilder builder = new StringBuilder();
+        builder.append('[');
+
+        if (!list.isEmpty()) {
+            builder.append(serialize(first(list), itemIdMapper));
+
+            for (Object element : butFirst(list)) {
+                builder.append(", ").append(serialize(element, itemIdMapper));
+            }
+        }
+
+        builder.append(']');
+        return builder.toString();
+    }
+
+    static String serializeMap(Map<?, ?> map, ItemIdMapper itemIdMapper) {
+        StringBuilder builder = new StringBuilder();
+        builder.append("{");
+
+        if (!map.isEmpty()) {
+            serializeEntry(builder, first(map.entrySet()), itemIdMapper);
+            for (Map.Entry<?, ?> entry : butFirst(map.entrySet())) {
+                builder.append(", ");
+                serializeEntry(builder, entry, itemIdMapper);
+            }
+        }
+
+        builder.append('}');
+        return builder.toString();
+    }
+
+    static void serializeEntry(StringBuilder builder, Map.Entry<?, ?> entry, ItemIdMapper itemIdMapper) {
+        builder.append(serialize(entry.getKey(), itemIdMapper)).append(' ').
+                append(serialize(entry.getValue(), itemIdMapper));
+    }
+
+    static String serializeItem(Item item, ItemIdMapper itemIdMapper) {
+        return ItemExecutorRegistry.getByType(item.getItemType()).itemToForm(item, itemIdMapper).serialize(itemIdMapper);
+    }
+}