1 files changed, 70 insertions, 0 deletions
diff --git a/icing/index/embedding-indexing-handler.h b/icing/index/embedding-indexing-handler.h
new file mode 100644
index 0000000..f3adf6a
--- /dev/null
+++ b/icing/index/embedding-indexing-handler.h
@@ -0,0 +1,70 @@
+// Copyright (C) 2024 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ICING_INDEX_EMBEDDING_INDEXING_HANDLER_H_
+#define ICING_INDEX_EMBEDDING_INDEXING_HANDLER_H_
+
+#include <memory>
+
+#include "icing/text_classifier/lib3/utils/base/status.h"
+#include "icing/text_classifier/lib3/utils/base/statusor.h"
+#include "icing/index/data-indexing-handler.h"
+#include "icing/index/embed/embedding-index.h"
+#include "icing/store/document-id.h"
+#include "icing/util/clock.h"
+#include "icing/util/tokenized-document.h"
+
+namespace icing {
+namespace lib {
+
+class EmbeddingIndexingHandler : public DataIndexingHandler {
+ public:
+  ~EmbeddingIndexingHandler() override = default;
+
+  // Creates an EmbeddingIndexingHandler instance which does not take
+  // ownership of any input components. All pointers must refer to valid objects
+  // that outlive the created EmbeddingIndexingHandler instance.
+  //
+  // Returns:
+  //   - An EmbeddingIndexingHandler instance on success
+  //   - FAILED_PRECONDITION_ERROR if any of the input pointer is null
+  static libtextclassifier3::StatusOr<std::unique_ptr<EmbeddingIndexingHandler>>
+  Create(const Clock* clock, EmbeddingIndex* embedding_index);
+
+  // Handles the embedding indexing process: add hits into the embedding index
+  // for all contents in tokenized_document.vector_sections.
+  //
+  // Returns:
+  //   - OK on success.
+  //   - INVALID_ARGUMENT_ERROR if document_id is invalid OR document_id is less
+  //     than or equal to the document_id of a previously indexed document in
+  //     non recovery mode.
+  //   - INTERNAL_ERROR if any other errors occur.
+  //   - Any embedding index errors.
+  libtextclassifier3::Status Handle(
+      const TokenizedDocument& tokenized_document, DocumentId document_id,
+      bool recovery_mode, PutDocumentStatsProto* put_document_stats) override;
+
+ private:
+  explicit EmbeddingIndexingHandler(const Clock* clock,
+                                    EmbeddingIndex* embedding_index)
+      : DataIndexingHandler(clock), embedding_index_(*embedding_index) {}
+
+  EmbeddingIndex& embedding_index_;
+};
+
+}  // namespace lib
+}  // namespace icing
+
+#endif  // ICING_INDEX_EMBEDDING_INDEXING_HANDLER_H_