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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "i_document_meta_store_context.h"
#include <vespa/searchcommon/common/growstrategy.h>
namespace proton {
class DocumentMetaStore;
/**
* Class providing write and read interface to the document meta store.
*/
class DocumentMetaStoreContext : public IDocumentMetaStoreContext
{
public:
class ReadGuard : public IDocumentMetaStoreContext::IReadGuard
{
private:
search::AttributeGuard _guard;
const DocumentMetaStore &_store;
public:
explicit ReadGuard(const std::shared_ptr<search::AttributeVector> &metaStoreAttr);
const search::IDocumentMetaStore &get() const override;
};
private:
std::shared_ptr<search::AttributeVector> _metaStoreAttr;
std::shared_ptr<IDocumentMetaStore> _metaStore;
public:
explicit DocumentMetaStoreContext(std::shared_ptr<bucketdb::BucketDBOwner> bucketDB);
/**
* Create a new context instantiating a document meta store
* with the given name, grow strategy, and comparator.
*/
DocumentMetaStoreContext(std::shared_ptr<bucketdb::BucketDBOwner> bucketDB,
const vespalib::string &name,
const search::GrowStrategy &grow);
~DocumentMetaStoreContext() override;
/**
* Create a new context with the given document meta store encapsulated
* as an attribute vector.
*/
explicit DocumentMetaStoreContext(std::shared_ptr<search::AttributeVector> metaStoreAttr);
std::shared_ptr<proton::IDocumentMetaStore> getSP() const override { return _metaStore; }
proton::IDocumentMetaStore & get() override { return *_metaStore; }
IReadGuard::SP getReadGuard() const override {
return std::make_shared<ReadGuard>(_metaStoreAttr);
}
void constructFreeList() override;
};
} // namespace proton
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