75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
/*
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* Copyright (C) 2015 Cloudius Systems, Ltd.
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*/
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#include "mutation_partition_view.hh"
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#include "schema.hh"
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#include "atomic_cell.hh"
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#include "db/serializer.hh"
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#include "utils/data_input.hh"
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#include "mutation_partition_serializer.hh"
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//
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// See mutation_partition_serializer.cc for representation layout.
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//
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using namespace db;
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void
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mutation_partition_view::accept(const schema& schema, mutation_partition_visitor& visitor) const {
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data_input in(_bytes);
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visitor.accept_partition_tombstone(tombstone_serializer::read(in));
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// Read static row
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auto n_columns = in.read<mutation_partition_serializer::count_type>();
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while (n_columns-- > 0) {
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auto id = in.read<column_id>();
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if (schema.static_column_at(id).is_atomic()) {
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auto&& v = atomic_cell_view_serializer::read(in);
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visitor.accept_static_cell(id, v);
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} else {
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auto&& v = collection_mutation_view_serializer::read(in);
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visitor.accept_static_cell(id, v);
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}
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}
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// Read row tombstones
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auto n_tombstones = in.read<mutation_partition_serializer::count_type>();
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while (n_tombstones-- > 0) {
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auto&& prefix = clustering_key_prefix_view_serializer::read(in);
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auto&& t = tombstone_serializer::read(in);
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visitor.accept_row_tombstone(prefix, t);
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}
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// Read clustered rows
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while (in.has_next()) {
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auto&& key = clustering_key_view_serializer::read(in);
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auto&& timestamp = in.read<api::timestamp_type>();
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gc_clock::duration ttl;
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gc_clock::time_point expiry;
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if (timestamp != api::missing_timestamp) {
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ttl = gc_clock::duration(in.read<gc_clock::rep>());
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if (ttl.count()) {
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expiry = gc_clock::time_point(gc_clock::duration(in.read<gc_clock::rep>()));
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}
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}
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auto&& deleted_at = tombstone_serializer::read(in);
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visitor.accept_row(key, deleted_at, row_marker(timestamp, ttl, expiry));
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auto n_columns = in.read<mutation_partition_serializer::count_type>();
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while (n_columns-- > 0) {
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auto id = in.read<column_id>();
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if (schema.regular_column_at(id).is_atomic()) {
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auto&& v = atomic_cell_view_serializer::read(in);
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visitor.accept_row_cell(id, v);
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} else {
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auto&& v = collection_mutation_view_serializer::read(in);
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visitor.accept_row_cell(id, v);
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}
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}
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}
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}
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