230 lines
7.8 KiB
C++
230 lines
7.8 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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* This file contains implementation for st_geomfromtext.
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*/
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#define USING_LOG_PREFIX SQL_ENG
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#include "sql/engine/expr/ob_expr_st_geomfromtext.h"
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#include "lib/geo/ob_wkt_parser.h"
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#include "observer/omt/ob_tenant_srs_mgr.h"
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#include "sql/engine/expr/ob_geo_expr_utils.h"
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#include "lib/geo/ob_geo_coordinate_range_visitor.h"
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#include "lib/geo/ob_geo_reverse_coordinate_visitor.h"
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#include "lib/geo/ob_geo_func_common.h"
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using namespace oceanbase::common;
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using namespace oceanbase::sql;
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using namespace oceanbase::omt;
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namespace oceanbase
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{
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namespace sql
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{
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ObExprSTGeomFromText::ObExprSTGeomFromText(ObIAllocator &alloc)
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: ObFuncExprOperator(alloc, T_FUN_SYS_ST_GEOMFROMTEXT, N_ST_GEOMFROMTEXT, MORE_THAN_ZERO, NOT_ROW_DIMENSION)
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{
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}
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ObExprSTGeomFromText::ObExprSTGeomFromText(ObIAllocator &alloc,
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ObExprOperatorType type,
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const char *name,
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int32_t param_num,
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int32_t dimension) : ObFuncExprOperator(alloc, type, name, param_num, dimension)
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{
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}
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ObExprSTGeomFromText::~ObExprSTGeomFromText()
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{
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}
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int ObExprSTGeomFromText::calc_result_typeN(ObExprResType& type,
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ObExprResType* types_stack,
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int64_t param_num,
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ObExprTypeCtx& type_ctx) const
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{
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UNUSED(type_ctx);
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UNUSED(types_stack);
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int ret = OB_SUCCESS;
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if (OB_UNLIKELY(param_num > 3)) {
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ObString func_name_(get_name());
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ret = OB_ERR_PARAM_SIZE;
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LOG_USER_ERROR(OB_ERR_PARAM_SIZE, func_name_.length(), func_name_.ptr());
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} else {
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for (uint8_t i = 0; i < param_num && OB_SUCC(ret); i++) {
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if (i == 0 || i == 2) {
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if (ob_is_null(types_stack[i].get_type())) {
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} else if (!ob_is_string_type(types_stack[i].get_type())
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|| ObCharset::is_cs_nonascii(types_stack[i].get_collation_type())) {
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ret = OB_ERR_GIS_INVALID_DATA;
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LOG_USER_ERROR(OB_ERR_GIS_INVALID_DATA, get_name());
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}
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}
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// srid
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if (i == 1) {
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types_stack[i].set_calc_type(ObIntType);
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type_ctx.set_cast_mode(type_ctx.get_cast_mode() | CM_STRING_INTEGER_TRUNC);
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}
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}
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type.set_geometry();
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type.set_length((ObAccuracy::DDL_DEFAULT_ACCURACY[ObGeometryType]).get_length());
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}
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return ret;
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}
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int ObExprSTGeomFromText::eval_st_geomfromtext(const ObExpr &expr,
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ObEvalCtx &ctx,
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ObDatum &res)
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{
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return eval_st_geomfromtext_common(expr, ctx, res, N_ST_GEOMFROMTEXT);
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}
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int ObExprSTGeomFromText::eval_st_geomfromtext_common(const ObExpr &expr,
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ObEvalCtx &ctx,
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ObDatum &res,
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const char *func_name)
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{
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int ret = OB_SUCCESS;
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ObArenaAllocator tmp_allocator;
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ObDatum *datum = NULL;
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int num_args = expr.arg_cnt_;
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bool is_null_result = false;
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uint32_t srid = 0;
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ObGeoAxisOrder axis_order = ObGeoAxisOrder::INVALID;
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ObString wkt;
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const ObSrsItem *srs_item = NULL;
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ObSQLSessionInfo *session = ctx.exec_ctx_.get_my_session();
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omt::ObSrsCacheGuard srs_guard;
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ObGeometry *geo = NULL;
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bool is_lat_long = false;
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bool is_geog = false;
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bool need_reverse = false;
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// get wkt
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if (OB_FAIL(expr.args_[0]->eval(ctx, datum))) {
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LOG_WARN("failed to eval first argument", K(ret));
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} else if (datum->is_null()) {
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is_null_result = true;
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} else {
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wkt = datum->get_string();
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}
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// get srid
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if (!is_null_result && OB_SUCC(ret) && num_args > 1) {
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if (OB_FAIL(expr.args_[1]->eval(ctx, datum))) {
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LOG_WARN("failed to eval second argument", K(ret));
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} else if (datum->is_null()) {
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is_null_result = true;
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} else if (datum->get_int() < 0 || datum->get_int() > UINT_MAX32) {
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ret = OB_OPERATE_OVERFLOW;
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LOG_USER_ERROR(OB_OPERATE_OVERFLOW, "SRID", func_name);
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LOG_WARN("srid input value out of range", K(ret), K(datum->get_int()));
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} else if (0 != (srid = datum->get_uint32())) {
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if (OB_FAIL(OTSRS_MGR.get_tenant_srs_guard(session->get_effective_tenant_id(), srs_guard))) {
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LOG_WARN("failed to get srs guard", K(ret));
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} else if (OB_FAIL(srs_guard.get_srs_item(srid, srs_item))) {
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LOG_WARN("failed to get srs item", K(ret));
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} else if (OB_ISNULL(srs_item)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("unexpected null srs item", K(ret));
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} else {
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is_geog = srs_item->is_geographical_srs();
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is_lat_long = srs_item->is_lat_long_order();
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need_reverse = is_geog && is_lat_long;
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}
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}
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}
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// get axis_order
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if (!is_null_result && OB_SUCC(ret) && num_args > 2 ) {
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if (OB_FAIL(expr.args_[2]->eval(ctx, datum))) {
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LOG_WARN("failed to eval third argument", K(ret));
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} else if (datum->is_null()){
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is_null_result = true;
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} else if (OB_FAIL(ObGeoExprUtils::parse_axis_order(datum->get_string(), func_name, axis_order))) {
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LOG_WARN("failed to parse axis order option string", K(ret));
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} else {
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switch (axis_order) {
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case ObGeoAxisOrder::LONG_LAT: {
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need_reverse = false;
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break;
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}
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case ObGeoAxisOrder::LAT_LONG: {
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need_reverse = true;
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break;
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}
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case ObGeoAxisOrder::SRID_DEFINED: {
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break;
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}
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default: {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("unexpected axis order parse result", K(ret));
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break;
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}
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}
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}
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}
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if (!is_null_result && OB_SUCC(ret)) {
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if (OB_FAIL(ObWktParser::parse_wkt(tmp_allocator, wkt, geo, true, is_geog))) {
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ret = OB_ERR_GIS_INVALID_DATA;
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LOG_USER_ERROR(OB_ERR_GIS_INVALID_DATA, func_name);
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LOG_WARN("failed to parse wkt", K(ret));
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} else if (OB_ISNULL(geo)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("unexpected null geo afer parse_wkt", K(ret), K(wkt));
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} else {
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if (is_geog && need_reverse) {
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ObGeoReverseCoordinateVisitor rcoord_visitor;
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if (OB_FAIL(geo->do_visit(rcoord_visitor))) {
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ret = OB_ERR_GIS_INVALID_DATA;
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LOG_USER_ERROR(OB_ERR_GIS_INVALID_DATA, func_name);
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LOG_WARN("failed to reverse geometry coordinate", K(ret));
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}
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}
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if (is_geog && OB_SUCC(ret)) {
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if (OB_FAIL(ObGeoExprUtils::check_coordinate_range(srs_item, geo, func_name))) {
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LOG_WARN("check geo coordinate range failed", K(ret));
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}
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}
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}
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}
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if (OB_FAIL(ret)) {
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} else if (is_null_result) {
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res.set_null();
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} else if (OB_ISNULL(geo)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("unexpected null geometry", K(ret));
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} else {
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ObString res_wkb;
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if (OB_FAIL(ObGeoExprUtils::geo_to_wkb(*geo, expr, ctx, srs_item, res_wkb))) {
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LOG_WARN("failed to write geometry to wkb", K(ret));
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} else {
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res.set_string(res_wkb);
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}
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}
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return ret;
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}
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int ObExprSTGeomFromText::cg_expr(ObExprCGCtx &expr_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const
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{
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UNUSED(expr_cg_ctx);
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UNUSED(raw_expr);
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rt_expr.eval_func_ = eval_st_geomfromtext;
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return OB_SUCCESS;
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}
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} // namespace sql
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} // namespace oceanbase
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