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78 lines
1.8 KiB
C++
78 lines
1.8 KiB
C++
#include <Core/Types.h>
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#include <Common/Exception.h>
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#include <IO/ReadBuffer.h>
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#include <IO/WriteBuffer.h>
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#include <IO/VarInt.h>
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#include <IO/ReadHelpers.h>
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#include <IO/WriteHelpers.h>
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#include <Core/BlockInfo.h>
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int UNKNOWN_BLOCK_INFO_FIELD;
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}
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/// Write values in binary form. NOTE: You could use protobuf, but it would be overkill for this case.
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void BlockInfo::write(WriteBuffer & out) const
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{
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/// Set of pairs `FIELD_NUM`, value in binary form. Then 0.
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#define WRITE_FIELD(TYPE, NAME, DEFAULT, FIELD_NUM) \
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writeVarUInt(FIELD_NUM, out); \
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writeBinary(NAME, out);
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APPLY_FOR_BLOCK_INFO_FIELDS(WRITE_FIELD)
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#undef WRITE_FIELD
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writeVarUInt(0, out);
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}
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/// Read values in binary form.
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void BlockInfo::read(ReadBuffer & in)
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{
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UInt64 field_num = 0;
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while (true)
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{
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readVarUInt(field_num, in);
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if (field_num == 0)
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break;
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switch (field_num)
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{
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#define READ_FIELD(TYPE, NAME, DEFAULT, FIELD_NUM) \
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case FIELD_NUM: \
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readBinary(NAME, in); \
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break;
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APPLY_FOR_BLOCK_INFO_FIELDS(READ_FIELD)
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#undef READ_FIELD
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default:
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throw Exception("Unknown BlockInfo field number: " + toString(field_num), ErrorCodes::UNKNOWN_BLOCK_INFO_FIELD);
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}
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}
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}
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void BlockMissingValues::setBit(size_t column_idx, size_t row_idx)
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{
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RowsBitMask & mask = rows_mask_by_column_id[column_idx];
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mask.resize(row_idx + 1);
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mask[row_idx] = true;
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}
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const BlockMissingValues::RowsBitMask & BlockMissingValues::getDefaultsBitmask(size_t column_idx) const
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{
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static RowsBitMask none;
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auto it = rows_mask_by_column_id.find(column_idx);
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if (it != rows_mask_by_column_id.end())
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return it->second;
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return none;
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}
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}
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