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40 lines
1.3 KiB
C++
40 lines
1.3 KiB
C++
// Copyright (C) 2023-present ScyllaDB
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// SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
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#pragma once
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#include "expression.hh"
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#include "bytes.hh"
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namespace cql3 {
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class query_options;
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class raw_value;
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}
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namespace cql3::expr {
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// Input data needed to evaluate an expression. Individual members can be
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// null if not applicable (e.g. evaluating outside a row context)
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struct evaluation_inputs {
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std::span<const bytes> partition_key;
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std::span<const bytes> clustering_key;
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std::span<const managed_bytes_opt> static_and_regular_columns; // indexes match `selection` member
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const cql3::selection::selection* selection = nullptr;
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const query_options* options = nullptr;
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std::span<const api::timestamp_type> static_and_regular_timestamps; // indexes match `selection` member
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std::span<const int32_t> static_and_regular_ttls; // indexes match `selection` member
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std::span<const cql3::raw_value> temporaries; // indexes match temporary::index
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};
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// Takes a prepared expression and calculates its value.
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// Evaluates bound values, calls functions and returns just the bytes and type.
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cql3::raw_value evaluate(const expression& e, const evaluation_inputs&);
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cql3::raw_value evaluate(const expression& e, const query_options&);
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}
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