diff options
Diffstat (limited to 'plugin/type_geom/plugin.cc')
| -rw-r--r-- | plugin/type_geom/plugin.cc | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/plugin/type_geom/plugin.cc b/plugin/type_geom/plugin.cc new file mode 100644 index 00000000000..b462a34cef9 --- /dev/null +++ b/plugin/type_geom/plugin.cc @@ -0,0 +1,254 @@ +/* + Copyright (c) 2000, 2015, Oracle and/or its affiliates. + Copyright (c) 2009, 2019, MariaDB + + 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> // THD +#include <sql_i_s.h> // ST_SCHEMA_TABLE +#include <mysql/plugin.h> +#include "sql_show.h" // get_all_tables() +#include "sql_error.h" // convert_error_to_warning() +#include "sql_type_geom.h" + + +/*********** INFORMATION_SCHEMA.SPATIEL_REF_SYS *******************/ + +namespace Show { + +static ST_FIELD_INFO spatial_ref_sys_fields_info[]= +{ + Column("SRID", SShort(5), NOT_NULL), + Column("AUTH_NAME", Varchar(FN_REFLEN), NOT_NULL), + Column("AUTH_SRID", SLong(5), NOT_NULL), + Column("SRTEXT", Varchar(2048), NOT_NULL), + CEnd() +}; + + +static int spatial_ref_sys_fill(THD *thd, TABLE_LIST *tables, COND *cond) +{ + DBUG_ENTER("fill_spatial_ref_sys"); + TABLE *table= tables->table; + CHARSET_INFO *cs= system_charset_info; + int result= 1; + + restore_record(table, s->default_values); + + table->field[0]->store(-1, FALSE); /*SRID*/ + table->field[1]->store(STRING_WITH_LEN("Not defined"), cs); /*AUTH_NAME*/ + table->field[2]->store(-1, FALSE); /*AUTH_SRID*/ + table->field[3]->store(STRING_WITH_LEN( + "LOCAL_CS[\"Spatial reference wasn't specified\"," + "LOCAL_DATUM[\"Unknown\",0]," "UNIT[\"m\",1.0]," "AXIS[\"x\",EAST]," + "AXIS[\"y\",NORTH]]"), cs);/*SRTEXT*/ + if (schema_table_store_record(thd, table)) + goto exit; + + table->field[0]->store(0, TRUE); /*SRID*/ + table->field[1]->store(STRING_WITH_LEN("EPSG"), cs); /*AUTH_NAME*/ + table->field[2]->store(404000, TRUE); /*AUTH_SRID*/ + table->field[3]->store(STRING_WITH_LEN( + "LOCAL_CS[\"Wildcard 2D cartesian plane in metric unit\"," + "LOCAL_DATUM[\"Unknown\",0]," "UNIT[\"m\",1.0]," + "AXIS[\"x\",EAST]," "AXIS[\"y\",NORTH]," + "AUTHORITY[\"EPSG\",\"404000\"]]"), cs);/*SRTEXT*/ + if (schema_table_store_record(thd, table)) + goto exit; + + result= 0; + +exit: + DBUG_RETURN(result); +} + + +static int plugin_init_spatial_ref_sys(void *p) +{ + ST_SCHEMA_TABLE *schema= (ST_SCHEMA_TABLE *)p; + schema->fields_info= spatial_ref_sys_fields_info; + schema->fill_table= spatial_ref_sys_fill; + return 0; +} + + +static struct st_mysql_information_schema spatial_ref_sys_plugin= +{ MYSQL_INFORMATION_SCHEMA_INTERFACE_VERSION }; + + +} // namespace Show + +/*********** INFORMATION_SCHEMA.GEOMETRY_COLUMNS *******************/ + + +namespace Show { + +static ST_FIELD_INFO geometry_columns_fields_info[]= +{ + Column("F_TABLE_CATALOG", Catalog(), NOT_NULL, OPEN_FRM_ONLY), + Column("F_TABLE_SCHEMA", Name(), NOT_NULL, OPEN_FRM_ONLY), + Column("F_TABLE_NAME", Name(), NOT_NULL, OPEN_FRM_ONLY), + Column("F_GEOMETRY_COLUMN", Name(), NOT_NULL, OPEN_FRM_ONLY), + Column("G_TABLE_CATALOG", Catalog(), NOT_NULL, OPEN_FRM_ONLY), + Column("G_TABLE_SCHEMA", Name(), NOT_NULL, OPEN_FRM_ONLY), + Column("G_TABLE_NAME", Name(), NOT_NULL, OPEN_FRM_ONLY), + Column("G_GEOMETRY_COLUMN", Name(), NOT_NULL, OPEN_FRM_ONLY), + Column("STORAGE_TYPE", STiny(2), NOT_NULL, OPEN_FRM_ONLY), + Column("GEOMETRY_TYPE", SLong(7), NOT_NULL, OPEN_FRM_ONLY), + Column("COORD_DIMENSION", STiny(2), NOT_NULL, OPEN_FRM_ONLY), + Column("MAX_PPR", STiny(2), NOT_NULL, OPEN_FRM_ONLY), + Column("SRID", SShort(5), NOT_NULL, OPEN_FRM_ONLY), + CEnd() +}; + + +static void geometry_columns_fill_record(TABLE *table, + const LEX_CSTRING *db_name, + const LEX_CSTRING *table_name, + const Field_geom *field) +{ + static const LEX_CSTRING catalog= {STRING_WITH_LEN("def")}; + const CHARSET_INFO *cs= system_charset_info; + const Type_handler_geometry *gth= field->type_handler_geom(); + /*F_TABLE_CATALOG*/ + table->field[0]->store(catalog, cs); + /*F_TABLE_SCHEMA*/ + table->field[1]->store(db_name, cs); + /*F_TABLE_NAME*/ + table->field[2]->store(table_name, cs); + /*G_TABLE_CATALOG*/ + table->field[4]->store(catalog, cs); + /*G_TABLE_SCHEMA*/ + table->field[5]->store(db_name, cs); + /*G_TABLE_NAME*/ + table->field[6]->store(table_name, cs); + /*G_GEOMETRY_COLUMN*/ + table->field[7]->store(field->field_name, cs); + /*STORAGE_TYPE*/ + table->field[8]->store(1LL, true); /*Always 1 (binary implementation)*/ + /*GEOMETRY_TYPE*/ + table->field[9]->store((longlong) (gth->geometry_type()), true); + /*COORD_DIMENSION*/ + table->field[10]->store(2LL, true); + /*MAX_PPR*/ + table->field[11]->set_null(); + /*SRID*/ + table->field[12]->store((longlong) (field->get_srid()), true); +} + + +static int get_geometry_column_record(THD *thd, TABLE_LIST *tables, + TABLE *table, bool res, + const LEX_CSTRING *db_name, + const LEX_CSTRING *table_name) +{ + TABLE *show_table; + Field **ptr, *field; + DBUG_ENTER("get_geometry_column_record"); + + if (res) + { + /* + open_table() failed with an error. + Convert the error to a warning and let the caller + continue with the next table. + */ + convert_error_to_warning(thd); + DBUG_RETURN(0); + } + + // Skip INFORMATION_SCHEMA tables. They don't have geometry columns. + if (tables->schema_table) + DBUG_RETURN(0); + + show_table= tables->table; + ptr= show_table->field; + show_table->use_all_columns(); // Required for default + restore_record(show_table, s->default_values); + + for (; (field= *ptr) ; ptr++) + { + const Field_geom *fg; + if (field->type() == MYSQL_TYPE_GEOMETRY && + (fg= dynamic_cast<const Field_geom*>(field))) + { + DEBUG_SYNC(thd, "get_schema_column"); + /* Get default row, with all NULL fields set to NULL */ + restore_record(table, s->default_values); + geometry_columns_fill_record(table, db_name, table_name, fg); + if (schema_table_store_record(thd, table)) + DBUG_RETURN(1); + } + } + + DBUG_RETURN(0); +} + + +static int plugin_init_geometry_columns(void *p) +{ + ST_SCHEMA_TABLE *schema= (ST_SCHEMA_TABLE *)p; + schema->fields_info= geometry_columns_fields_info; + schema->fill_table= get_all_tables; + schema->process_table= get_geometry_column_record; + schema->idx_field1= 1; + schema->idx_field2= 2; + schema->i_s_requested_object= OPTIMIZE_I_S_TABLE | OPEN_VIEW_FULL; + return 0; +} + + +static struct st_mysql_information_schema geometry_columns_plugin= +{ MYSQL_INFORMATION_SCHEMA_INTERFACE_VERSION }; + + +} // namespace Show + + +/********************* Plugin library descriptors ************************/ + + +maria_declare_plugin(type_geom) +{ + MYSQL_INFORMATION_SCHEMA_PLUGIN, // the plugin type (see include/mysql/plugin.h) + &Show::spatial_ref_sys_plugin, // pointer to type-specific plugin descriptor + "SPATIAL_REF_SYS", // plugin name + "MariaDB", // plugin author + "Lists all geometry columns", // the plugin description + PLUGIN_LICENSE_GPL, // the plugin license (see include/mysql/plugin.h) + Show::plugin_init_spatial_ref_sys, // 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_STABLE // Maturity (see include/mysql/plugin.h)*/ +}, +{ + MYSQL_INFORMATION_SCHEMA_PLUGIN, // the plugin type (see include/mysql/plugin.h) + &Show::geometry_columns_plugin, // pointer to type-specific plugin descriptor + "GEOMETRY_COLUMNS", // plugin name + "MariaDB", // plugin author + "Lists all geometry columns", // the plugin description + PLUGIN_LICENSE_GPL, // the plugin license (see include/mysql/plugin.h) + Show::plugin_init_geometry_columns,// 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_STABLE // Maturity (see include/mysql/plugin.h) +} +maria_declare_plugin_end; |