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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "selectcontext.h"
#include "cachedselect.h"
#include <vespa/document/select/value.h>
#include <vespa/searchlib/attribute/attribute_read_guard.h>
#include <vespa/searchlib/attribute/readable_attribute_vector.h>
#include <cassert>
namespace proton {
using document::select::Value;
using document::select::Context;
using search::AttributeVector;
using search::attribute::AttributeReadGuard;
namespace select {
struct Guards : public std::vector<std::unique_ptr<AttributeReadGuard>> {
using Parent = std::vector<std::unique_ptr<AttributeReadGuard>>;
using Parent::Parent;
};
}
SelectContext::SelectContext(const CachedSelect &cachedSelect)
: Context(),
_docId(0u),
_guards(std::make_unique<select::Guards>(cachedSelect.attributes().size())),
_cachedSelect(cachedSelect)
{ }
SelectContext::~SelectContext() = default;
void
SelectContext::getAttributeGuards()
{
_guards->clear();
_guards->reserve(_cachedSelect.attributes().size());
for (const auto& attr : _cachedSelect.attributes()) {
_guards->emplace_back(attr->makeReadGuard(false));
}
}
void
SelectContext::dropAttributeGuards()
{
_guards->clear();
}
const search::attribute::IAttributeVector&
SelectContext::guarded_attribute_at_index(uint32_t index) const noexcept
{
assert(index < _guards->size());
assert((*_guards)[index].get() != nullptr);
return *((*_guards)[index])->attribute();
}
}
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