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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/vespalib/stllike/string.h>
#include <vespa/searchcommon/attribute/i_document_meta_store_context.h>
namespace search::attribute { struct AttributeBlueprintParams; }
namespace search::attribute { class IAttributeVector; }
namespace vespalib::eval { struct Value; }
namespace vespalib { class Doom; }
namespace search::queryeval {
/**
* Provides a context that follows the life of a query.
*/
class IRequestContext
{
public:
using MetaStoreReadGuardSP = std::shared_ptr<IDocumentMetaStoreContext::IReadGuard>;
virtual ~IRequestContext() = default;
/**
* Provides the time of soft doom for the query. Now it is time to start cleaning up and return what you have.
* @return time of soft doom.
*/
virtual const vespalib::Doom & getDoom() const = 0;
/**
* Provide access to attributevectors
* @return AttributeVector or nullptr if it does not exist.
*/
virtual const attribute::IAttributeVector *getAttribute(const vespalib::string &name) const = 0;
virtual const attribute::IAttributeVector *getAttributeStableEnum(const vespalib::string &name) const = 0;
/**
* Returns the tensor of the given name that was passed with the query.
* Returns nullptr if the tensor is not found or if it is not a tensor.
*/
virtual const vespalib::eval::Value* get_query_tensor(const vespalib::string& tensor_name) const = 0;
virtual const search::attribute::AttributeBlueprintParams& get_attribute_blueprint_params() const = 0;
virtual const MetaStoreReadGuardSP * getMetaStoreReadGuard() const = 0;
};
}
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