122 lines
4.3 KiB
C++
122 lines
4.3 KiB
C++
/**
|
|
* Copyright (c) 2021 OceanBase
|
|
* OceanBase CE is licensed under Mulan PubL v2.
|
|
* You can use this software according to the terms and conditions of the Mulan PubL v2.
|
|
* You may obtain a copy of Mulan PubL v2 at:
|
|
* http://license.coscl.org.cn/MulanPubL-2.0
|
|
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
|
|
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
|
|
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
|
|
* See the Mulan PubL v2 for more details.
|
|
* This file contains implementation for ob_expr_st_area.
|
|
*/
|
|
|
|
#define USING_LOG_PREFIX SQL_ENG
|
|
|
|
#include "ob_expr_st_area.h"
|
|
#include "lib/geo/ob_geo_func_register.h"
|
|
#include "lib/geo/ob_geo_utils.h"
|
|
#include "sql/session/ob_sql_session_info.h"
|
|
#include "sql/engine/ob_exec_context.h"
|
|
#include "observer/omt/ob_tenant_srs_mgr.h"
|
|
#include "sql/engine/expr/ob_geo_expr_utils.h"
|
|
|
|
using namespace oceanbase::common;
|
|
using namespace oceanbase::sql;
|
|
using namespace oceanbase::omt;
|
|
|
|
namespace oceanbase
|
|
{
|
|
namespace sql
|
|
{
|
|
|
|
ObExprSTArea::ObExprSTArea(ObIAllocator &alloc)
|
|
: ObFuncExprOperator(alloc, T_FUN_SYS_ST_AREA, N_ST_AREA, 1, VALID_FOR_GENERATED_COL, NOT_ROW_DIMENSION)
|
|
{
|
|
}
|
|
|
|
ObExprSTArea::~ObExprSTArea()
|
|
{
|
|
}
|
|
|
|
int ObExprSTArea::calc_result_type1(ObExprResType &type,
|
|
ObExprResType &type1,
|
|
common::ObExprTypeCtx &type_ctx) const
|
|
{
|
|
UNUSED(type_ctx);
|
|
INIT_SUCC(ret);
|
|
if (ob_is_numeric_type(type1.get_type())) {
|
|
type1.set_calc_type(ObLongTextType);
|
|
} else if (!ob_is_geometry(type1.get_type())
|
|
&& !ob_is_string_type(type1.get_type())
|
|
&& type1.get_type() != ObNullType) {
|
|
// handle string types as hex strings(wkb)
|
|
ret = OB_ERR_GIS_INVALID_DATA;
|
|
LOG_USER_ERROR(OB_ERR_GIS_INVALID_DATA, N_ST_AREA);
|
|
LOG_WARN("invalid type", K(ret), K(type1.get_type()));
|
|
} else {
|
|
type.set_double();
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int ObExprSTArea::eval_st_area(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res)
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
ObDatum *gis_datum = NULL;
|
|
ObExpr *gis_arg = expr.args_[0];
|
|
ObEvalCtx::TempAllocGuard tmp_alloc_g(ctx);
|
|
common::ObArenaAllocator &temp_allocator = tmp_alloc_g.get_allocator();
|
|
ObObjType input_type = gis_arg->datum_meta_.type_;
|
|
|
|
if (OB_FAIL(gis_arg->eval(ctx, gis_datum))) {
|
|
LOG_WARN("eval geo arg failed", K(ret));
|
|
} else if (gis_datum->is_null()) {
|
|
res.set_null();
|
|
} else {
|
|
ObGeometry *geo = NULL;
|
|
omt::ObSrsCacheGuard srs_guard;
|
|
const ObSrsItem *srs = NULL;
|
|
ObString wkb = gis_datum->get_string();
|
|
if (OB_FAIL(ObTextStringHelper::read_real_string_data(temp_allocator, *gis_datum,
|
|
gis_arg->datum_meta_, gis_arg->obj_meta_.has_lob_header(), wkb))) {
|
|
LOG_WARN("fail to get real string data", K(ret), K(wkb));
|
|
} else if (OB_FAIL(ObGeoExprUtils::get_srs_item(ctx, srs_guard, wkb, srs, true, N_ST_AREA))) {
|
|
LOG_WARN("fail to get srs item", K(ret), K(wkb));
|
|
} else if (OB_FAIL(ObGeoExprUtils::build_geometry(temp_allocator, wkb, geo, srs, N_ST_AREA))) {
|
|
LOG_WARN("get geo by wkb failed", K(ret));
|
|
} else if (geo->type() != ObGeoType::POLYGON && geo->type() != ObGeoType::MULTIPOLYGON) {
|
|
ret = OB_ERR_UNEXPECTED_GEOMETRY_TYPE;
|
|
LOG_WARN("unexpected geometry type for st_area", K(ret));
|
|
LOG_USER_ERROR(OB_ERR_UNEXPECTED_GEOMETRY_TYPE, "POLYGON/MULTIPOLYGON",
|
|
ObGeoTypeUtil::get_geo_name_by_type(geo->type()), N_ST_AREA);
|
|
} else {
|
|
ObGeoEvalCtx gis_context(&temp_allocator, srs);
|
|
int correct_result;
|
|
double result = 0.0;
|
|
if (OB_FAIL(gis_context.append_geo_arg(geo))) {
|
|
LOG_WARN("build gis context failed", K(ret), K(gis_context.get_geo_count()));
|
|
} else if (OB_FAIL(ObGeoFunc<ObGeoFuncType::Area>::geo_func::eval(gis_context, result))) {
|
|
LOG_WARN("eval st area failed", K(ret));
|
|
ObGeoExprUtils::geo_func_error_handle(ret, N_ST_AREA);
|
|
} else if (!std::isfinite(result)) {
|
|
ret = OB_OPERATE_OVERFLOW;
|
|
LOG_WARN("Result value is out of range in st_area", K(ret));
|
|
} else {
|
|
res.set_double(result);
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int ObExprSTArea::cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr, ObExpr &rt_expr) const
|
|
{
|
|
UNUSEDx(expr_cg_ctx, raw_expr);
|
|
rt_expr.eval_func_ = eval_st_area;
|
|
return OB_SUCCESS;
|
|
}
|
|
|
|
}
|
|
}
|