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/*
Copyright (c) 2023, MariaDB Corporation
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#include <my_global.h>
#include <sql_class.h>
#include <mysql/plugin_data_type.h>
#include "sql_type.h"
class Type_collection_local: public Type_collection
{
protected:
const Type_handler *aggregate_common(const Type_handler *h1,
const Type_handler *h2) const;
public:
const Type_handler *aggregate_for_result(const Type_handler *h1,
const Type_handler *h2)
const override
{
return aggregate_common(h1, h2);
}
const Type_handler *aggregate_for_comparison(const Type_handler *h1,
const Type_handler *h2)
const override
{
return aggregate_common(h1, h2);
}
const Type_handler *aggregate_for_min_max(const Type_handler *h1,
const Type_handler *h2)
const override
{
return aggregate_common(h1, h2);
}
const Type_handler *aggregate_for_num_op(const Type_handler *h1,
const Type_handler *h2)
const override
{
return aggregate_common(h1, h2);
}
};
static Type_collection_local type_collection_local;
/*
A more MySQL compatible Field:
it does not set the UNSIGNED_FLAG.
This is how MySQL's Field_timestampf works.
*/
class Field_mysql_timestampf :public Field_timestampf
{
public:
Field_mysql_timestampf(const LEX_CSTRING &name,
const Record_addr &addr,
enum utype unireg_check_arg,
TABLE_SHARE *share, decimal_digits_t dec_arg)
:Field_timestampf(addr.ptr(), addr.null_ptr(), addr.null_bit(),
unireg_check_arg, &name, share, dec_arg)
{
flags&= ~UNSIGNED_FLAG; // MySQL compatibility
}
void sql_type(String &str) const override
{
sql_type_opt_dec_comment(str,
Field_mysql_timestampf::type_handler()->name(),
dec, type_version_mysql56());
}
const Type_handler *type_handler() const override;
};
class Type_handler_mysql_timestamp2: public Type_handler_timestamp2
{
public:
const Type_collection *type_collection() const override
{
return &type_collection_local;
}
Field *make_table_field_from_def(TABLE_SHARE *share, MEM_ROOT *root,
const LEX_CSTRING *name,
const Record_addr &rec, const Bit_addr &bit,
const Column_definition_attributes *attr,
uint32 flags) const override
{
return new (root)
Field_mysql_timestampf(*name, rec, attr->unireg_check, share,
attr->temporal_dec(MAX_DATETIME_WIDTH));
}
const Type_handler *type_handler_for_implicit_upgrade() const override
{
/*
The derived method as of 10.11.8 does "return this;" anyway.
However, in the future this may change to return a
opt_mysql56_temporal_format dependent handler.
Here in this class we need to make sure to do "return this;"
not to depend on the derived method changes.
*/
return this;
}
void Column_definition_implicit_upgrade_to_this(Column_definition *old)
const override
{
/*
Suppress the automatic upgrade depending on opt_mysql56_temporal_format,
derived from Type_handler_timestamp_common.
*/
}
};
static Type_handler_mysql_timestamp2 type_handler_mysql_timestamp2;
const Type_handler *Field_mysql_timestampf::type_handler() const
{
return &type_handler_mysql_timestamp2;
}
const Type_handler *
Type_collection_local::aggregate_common(const Type_handler *h1,
const Type_handler *h2) const
{
if (h1 == h2)
return h1;
static const Type_aggregator::Pair agg[]=
{
{
&type_handler_timestamp2,
&type_handler_mysql_timestamp2,
&type_handler_mysql_timestamp2
},
{NULL,NULL,NULL}
};
return Type_aggregator::find_handler_in_array(agg, h1, h2, true);
}
static struct st_mariadb_data_type plugin_descriptor_type_mysql_timestamp=
{
MariaDB_DATA_TYPE_INTERFACE_VERSION,
&type_handler_mysql_timestamp2
};
/*************************************************************************/
maria_declare_plugin(type_mysql_timestamp)
{
MariaDB_DATA_TYPE_PLUGIN, // the plugin type (see include/mysql/plugin.h)
&plugin_descriptor_type_mysql_timestamp, // pointer to type-specific plugin descriptor
"type_mysql_timestamp", // plugin name
"MariaDB Corporation", // plugin author
"Data type TYPE_MYSQL_TIMESTAMP", // the plugin description
PLUGIN_LICENSE_GPL, // the plugin license (see include/mysql/plugin.h)
0, // Pointer to plugin initialization function
0, // Pointer to plugin deinitialization function
0x0100, // Numeric version 0xAABB means AA.BB version
NULL, // Status variables
NULL, // System variables
"1.0", // String version representation
MariaDB_PLUGIN_MATURITY_EXPERIMENTAL // Maturity(see include/mysql/plugin.h)*/
}
maria_declare_plugin_end;
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