69a385fd9d
Schema related files are moved there. This excludes schema files that also interact with mutations, because the mutation module depends on the schema. Those files will have to go into a separate module. Closes #12858
59 lines
2.1 KiB
C++
59 lines
2.1 KiB
C++
/*
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* Copyright (C) 2022-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#pragma once
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#include "schema/schema_fwd.hh"
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#include "dht/i_partitioner_fwd.hh"
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#include <functional>
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#include <optional>
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#include <seastar/core/io_priority_class.hh>
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#include "readers/flat_mutation_reader_fwd.hh"
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#include "tracing/trace_state.hh"
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using namespace seastar;
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class flat_mutation_reader_v2;
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class reader_permit;
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class mutation_source;
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namespace query {
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class partition_slice;
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}
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// Make a reader that enables the wrapped reader to work with multiple ranges.
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///
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/// \param ranges An range vector that has to contain strictly monotonic
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/// partition ranges, such that successively calling
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/// `flat_mutation_reader::fast_forward_to()` with each one is valid.
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/// An range vector range with 0 or 1 elements is also valid.
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/// \param fwd_mr It is only respected when `ranges` contains 0 or 1 partition
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/// ranges. Otherwise the reader is created with
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/// mutation_reader::forwarding::yes.
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flat_mutation_reader_v2
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make_flat_multi_range_reader(
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schema_ptr s, reader_permit permit, mutation_source source, const dht::partition_range_vector& ranges,
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const query::partition_slice& slice, const io_priority_class& pc = default_priority_class(),
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tracing::trace_state_ptr trace_state = nullptr,
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mutation_reader::forwarding fwd_mr = mutation_reader::forwarding::yes);
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/// Make a reader that enables the wrapped reader to work with multiple ranges.
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///
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/// Generator overload. The ranges returned by the generator have to satisfy the
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/// same requirements as the `ranges` param of the vector overload.
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flat_mutation_reader_v2
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make_flat_multi_range_reader(
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schema_ptr s,
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reader_permit permit,
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mutation_source source,
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std::function<std::optional<dht::partition_range>()> generator,
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const query::partition_slice& slice,
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const io_priority_class& pc = default_priority_class(),
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tracing::trace_state_ptr trace_state = nullptr,
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mutation_reader::forwarding fwd_mr = mutation_reader::forwarding::yes);
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