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// 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.
#ifndef ICING_INDEX_ITERATOR_DOC_HIT_INFO_ITERATOR_PROPERTY_IN_SCHEMA_H_
#define 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/index/iterator/doc-hit-info-iterator.h"
#include "icing/schema/schema-store.h"
#include "icing/store/document-store.h"
namespace icing {
namespace lib {
// An iterator that helps filter for DocHitInfos whose schemas define the
// properties named in target_properties_.
class DocHitInfoIteratorPropertyInSchema : public DocHitInfoIterator {
public:
// Does not take any ownership, and all pointers must refer to valid objects
// that outlive the one constructed. The delegate should be at minimum be
// a DocHitInfoIteratorAllDocumentId, but other optimizations are possible,
// cf. go/icing-property-in-schema-existence.
explicit DocHitInfoIteratorPropertyInSchema(
std::unique_ptr<DocHitInfoIterator> delegate,
const DocumentStore* document_store, const SchemaStore* schema_store,
std::set<std::string> target_sections, int64_t current_time_ms);
libtextclassifier3::Status Advance() override;
libtextclassifier3::StatusOr<TrimmedNode> TrimRightMostNode() && override;
void MapChildren(const ChildrenMapper& mapper) override {
delegate_ = mapper(std::move(delegate_));
}
CallStats GetCallStats() const override { return delegate_->GetCallStats(); }
std::string ToString() const override;
void PopulateMatchedTermsStats(
std::vector<TermMatchInfo>* matched_terms_stats,
SectionIdMask filtering_section_mask = kSectionIdMaskAll) const override {
if (doc_hit_info_.document_id() == kInvalidDocumentId) {
// Current hit isn't valid, return.
return;
}
delegate_->PopulateMatchedTermsStats(matched_terms_stats,
filtering_section_mask);
}
private:
std::unique_ptr<DocHitInfoIterator> delegate_;
const DocumentStore& document_store_;
const SchemaStore& schema_store_;
std::set<std::string> target_properties_;
int64_t current_time_ms_;
};
} // namespace lib
} // namespace icing
#endif // ICING_INDEX_ITERATOR_DOC_HIT_INFO_ITERATOR_PROPERTY_IN_SCHEMA_H_
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