1 files changed, 114 insertions, 0 deletions
diff --git a/icing/index/iterator/doc-hit-info-iterator-property-in-schema.cc b/icing/index/iterator/doc-hit-info-iterator-property-in-schema.cc
new file mode 100644
index 0000000..5f260a8
--- /dev/null
+++ b/icing/index/iterator/doc-hit-info-iterator-property-in-schema.cc
@@ -0,0 +1,114 @@
+// Copyright (C) 2019 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.
+
+#include "icing/index/iterator/doc-hit-info-iterator-property-in-schema.h"
+
+#include <cstdint>
+#include <memory>
+#include <string>
+#include <string_view>
+#include <utility>
+
+#include "icing/text_classifier/lib3/utils/base/status.h"
+#include "icing/text_classifier/lib3/utils/base/statusor.h"
+#include "icing/absl_ports/canonical_errors.h"
+#include "icing/absl_ports/str_cat.h"
+#include "icing/index/hit/doc-hit-info.h"
+#include "icing/index/iterator/doc-hit-info-iterator.h"
+#include "icing/schema/schema-store.h"
+#include "icing/store/document-id.h"
+#include "icing/store/document-store.h"
+
+namespace icing {
+namespace lib {
+
+DocHitInfoIteratorPropertyInSchema::DocHitInfoIteratorPropertyInSchema(
+    std::unique_ptr<DocHitInfoIterator> delegate,
+    const DocumentStore* document_store, const SchemaStore* schema_store,
+    std::set<std::string> target_sections)
+    : delegate_(std::move(delegate)),
+      document_store_(*document_store),
+      schema_store_(*schema_store),
+      target_properties_(std::move(target_sections)) {}
+
+libtextclassifier3::Status DocHitInfoIteratorPropertyInSchema::Advance() {
+  doc_hit_info_ = DocHitInfo(kInvalidDocumentId);
+  hit_intersect_section_ids_mask_ = kSectionIdMaskNone;
+
+  // Maps from SchemaTypeId to a bool indicating whether or not the type has
+  // the requested property.
+  std::unordered_map<SchemaTypeId, bool> property_defined_types;
+  while (delegate_->Advance().ok()) {
+    DocumentId document_id = delegate_->doc_hit_info().document_id();
+    auto data_optional =
+        document_store_.GetAliveDocumentFilterData(document_id);
+    if (!data_optional) {
+      // Ran into some error retrieving information on this hit, skip
+      continue;
+    }
+
+    // Guaranteed that the DocumentFilterData exists at this point
+    SchemaTypeId schema_type_id = data_optional.value().schema_type_id();
+    bool valid_match = false;
+    auto itr = property_defined_types.find(schema_type_id);
+    if (itr != property_defined_types.end()) {
+      valid_match = itr->second;
+    } else {
+      for (const auto& property : target_properties_) {
+        if (schema_store_.IsPropertyDefinedInSchema(schema_type_id, property)) {
+          valid_match = true;
+          break;
+        }
+      }
+      property_defined_types[schema_type_id] = valid_match;
+    }
+
+    if (valid_match) {
+      doc_hit_info_ = delegate_->doc_hit_info();
+      hit_intersect_section_ids_mask_ =
+          delegate_->hit_intersect_section_ids_mask();
+      doc_hit_info_.set_hit_section_ids_mask(hit_intersect_section_ids_mask_);
+      return libtextclassifier3::Status::OK;
+    }
+
+    // The document's schema does not define any properties listed in
+    // target_properties_. Continue.
+  }
+
+  // Didn't find anything on the delegate iterator.
+  return absl_ports::ResourceExhaustedError("No more DocHitInfos in iterator");
+}
+
+libtextclassifier3::StatusOr<DocHitInfoIterator::TrimmedNode>
+DocHitInfoIteratorPropertyInSchema::TrimRightMostNode() && {
+  // Don't generate suggestion if the last operator is this custom function.
+  return absl_ports::InvalidArgumentError(
+      "Cannot generate suggestion if the last term is hasPropertyDefined().");
+}
+
+int32_t DocHitInfoIteratorPropertyInSchema::GetNumBlocksInspected() const {
+  return delegate_->GetNumBlocksInspected();
+}
+
+int32_t DocHitInfoIteratorPropertyInSchema::GetNumLeafAdvanceCalls() const {
+  return delegate_->GetNumLeafAdvanceCalls();
+}
+
+std::string DocHitInfoIteratorPropertyInSchema::ToString() const {
+  return absl_ports::StrCat("(", absl_ports::StrJoin(target_properties_, ","),
+                            "): ", delegate_->ToString());
+}
+
+}  // namespace lib
+}  // namespace icing