ClickHouse/dbms/Core/QualifiedTableName.h

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#pragma once
#include <string>
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#include <tuple>
#include <Common/SipHash.h>
namespace DB
{
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//TODO replace with StorageID
struct QualifiedTableName
{
std::string database;
std::string table;
bool operator==(const QualifiedTableName & other) const
{
return database == other.database && table == other.table;
}
bool operator<(const QualifiedTableName & other) const
{
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return std::forward_as_tuple(database, table) < std::forward_as_tuple(other.database, other.table);
}
UInt64 hash() const
{
SipHash hash_state;
hash_state.update(database.data(), database.size());
hash_state.update(table.data(), table.size());
return hash_state.get64();
}
};
}
namespace std
{
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template <> struct hash<DB::QualifiedTableName>
{
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using argument_type = DB::QualifiedTableName;
using result_type = size_t;
result_type operator()(const argument_type & qualified_table) const
{
return qualified_table.hash();
}
};
}