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57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
#ifndef SQL_CLIENT_METADATA_INCLUDED
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#define SQL_CLIENT_METADATA_INCLUDED
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/*
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Copyright (c) 2020, MariaDB Corporation.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
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#include "sql_string.h"
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/*
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Print MYSQL_FIELD metadata in human readable format
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*/
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class Client_field_metadata
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{
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const MYSQL_FIELD *m_field;
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public:
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Client_field_metadata(MYSQL_FIELD *field)
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:m_field(field)
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{ }
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void print_attr(Binary_string *to,
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const LEX_CSTRING &name,
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mariadb_field_attr_t attr,
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uint orig_to_length) const
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{
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MARIADB_CONST_STRING tmp;
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if (!mariadb_field_attr(&tmp, m_field, attr) && tmp.length)
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{
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if (to->length() != orig_to_length)
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to->append(" ", 1);
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to->append(name);
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to->append(tmp.str, tmp.length);
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}
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}
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void print_data_type_related_attributes(Binary_string *to) const
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{
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static const LEX_CSTRING type= {C_STRING_WITH_LEN("type=")};
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static const LEX_CSTRING format= {C_STRING_WITH_LEN("format=")};
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uint to_length_orig= to->length();
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print_attr(to, type, MARIADB_FIELD_ATTR_DATA_TYPE_NAME, to_length_orig);
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print_attr(to, format, MARIADB_FIELD_ATTR_FORMAT_NAME, to_length_orig);
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}
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};
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#endif // SQL_CLIENT_METADATA_INCLUDED
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