182 lines
6.8 KiB
C++
182 lines
6.8 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 eval_priv_st_touches.
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*/
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#define USING_LOG_PREFIX SQL_ENG
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#include "lib/geo/ob_geo_func_register.h"
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#include "lib/geo/ob_geo_ibin.h"
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#include "sql/engine/ob_exec_context.h"
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#include "ob_expr_priv_st_touches.h"
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#include "lib/geo/ob_geo_utils.h"
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#include "sql/engine/expr/ob_geo_expr_utils.h"
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using namespace oceanbase::common;
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using namespace oceanbase::sql;
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namespace oceanbase
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{
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namespace sql
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{
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ObExprPrivSTTouches::ObExprPrivSTTouches(ObIAllocator &alloc)
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: ObFuncExprOperator(alloc, T_FUN_SYS_PRIV_ST_TOUCHES, N_PRIV_ST_TOUCHES, 2,
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VALID_FOR_GENERATED_COL, NOT_ROW_DIMENSION)
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{}
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ObExprPrivSTTouches::~ObExprPrivSTTouches()
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{}
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int ObExprPrivSTTouches::calc_result_type2(ObExprResType &type, ObExprResType &type1,
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ObExprResType &type2, common::ObExprTypeCtx &type_ctx) const
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{
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UNUSED(type_ctx);
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INIT_SUCC(ret);
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int unexpected_types = 0;
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int null_types = 0;
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if (type1.get_type() == ObNullType) {
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null_types++;
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} else if (!ob_is_geometry(type1.get_type()) && !ob_is_string_type(type1.get_type())) {
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unexpected_types++;
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LOG_WARN("invalid type", K(type1.get_type()));
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}
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if (type2.get_type() == ObNullType) {
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null_types++;
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} else if (!ob_is_geometry(type2.get_type()) && !ob_is_string_type(type2.get_type())) {
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unexpected_types++;
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LOG_WARN("invalid type", K(type2.get_type()));
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}
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// an invalid type and a nullptr type will return nullptr
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// an invalid type and a valid type return error
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if (null_types == 0 && unexpected_types > 0) {
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ret = OB_ERR_GIS_INVALID_DATA;
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LOG_USER_ERROR(OB_ERR_GIS_INVALID_DATA, N_PRIV_ST_TOUCHES);
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LOG_WARN("invalid type", K(ret));
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}
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if (OB_SUCC(ret)) {
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type.set_int();
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type.set_scale(common::ObAccuracy::DDL_DEFAULT_ACCURACY[common::ObIntType].scale_);
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type.set_precision(common::ObAccuracy::DDL_DEFAULT_ACCURACY[common::ObIntType].precision_);
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}
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return ret;
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}
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int ObExprPrivSTTouches::get_input_geometry(omt::ObSrsCacheGuard &srs_guard, ObDatum *gis_datum, ObEvalCtx &ctx, ObExpr *gis_arg,
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bool &is_null_geo, const ObSrsItem *&srs, ObGeometry *&geo, bool &is_geo_empty)
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{
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int ret = OB_SUCCESS;
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ObEvalCtx::TempAllocGuard ctx_alloc_g(ctx);
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common::ObArenaAllocator &allocator = ctx_alloc_g.get_allocator();
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if (OB_FAIL(gis_arg->eval(ctx, gis_datum))) {
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LOG_WARN("eval geo args failed", K(ret));
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} else if (gis_datum->is_null()) {
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is_null_geo = true;
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} else {
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ObString wkb = gis_datum->get_string();
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ObGeoType type = ObGeoType::GEOTYPEMAX;
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uint32_t srid = -1;
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if (OB_FAIL(ObTextStringHelper::read_real_string_data(allocator,
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*gis_datum,
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gis_arg->datum_meta_,
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gis_arg->obj_meta_.has_lob_header(),
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wkb))) {
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LOG_WARN("fail to get real string data", K(ret), K(wkb));
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} else if (OB_FAIL(ObGeoTypeUtil::get_type_srid_from_wkb(wkb, type, srid))) {
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if (ret == OB_ERR_GIS_INVALID_DATA) {
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LOG_USER_ERROR(OB_ERR_GIS_INVALID_DATA, N_PRIV_ST_TOUCHES);
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}
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LOG_WARN("get type and srid from wkb failed", K(wkb), K(ret));
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} else if (OB_FAIL(ObGeoExprUtils::get_srs_item(
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ctx, srs_guard, wkb, srs, true, N_PRIV_ST_TOUCHES))) {
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LOG_WARN("fail to get srs item", K(ret), K(wkb));
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} else if (OB_FAIL(ObGeoExprUtils::build_geometry(allocator,
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wkb,
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geo,
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srs,
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N_PRIV_ST_TOUCHES,
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ObGeoBuildFlag::GEO_ALLOW_3D_DEFAULT))) {
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LOG_WARN("get first geo by wkb failed", K(ret));
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} else if (OB_FAIL(ObGeoExprUtils::check_empty(geo, is_geo_empty))) {
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LOG_WARN("check geo empty failed", K(ret));
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}
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}
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return ret;
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}
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int ObExprPrivSTTouches::eval_priv_st_touches(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res)
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{
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int ret = OB_SUCCESS;
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ObExpr *gis_arg1 = expr.args_[0];
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ObExpr *gis_arg2 = expr.args_[1];
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bool is_geo1_empty = false;
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bool is_geo2_empty = false;
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bool is_geo1_null = false;
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bool is_geo2_null = false;
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ObGeometry *geo1 = nullptr;
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ObGeometry *geo2 = nullptr;
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omt::ObSrsCacheGuard srs_guard;
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const ObSrsItem *srs1 = nullptr;
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const ObSrsItem *srs2 = nullptr;
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ObEvalCtx::TempAllocGuard tmp_alloc_g(ctx);
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common::ObArenaAllocator &temp_allocator = tmp_alloc_g.get_allocator();
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ObDatum *gis_datum1 = nullptr;
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ObDatum *gis_datum2 = nullptr;
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if (OB_FAIL(gis_arg1->eval(ctx, gis_datum1)) || OB_FAIL(gis_arg2->eval(ctx, gis_datum2))) {
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LOG_WARN("eval geo args failed", K(ret));
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} else if (gis_datum1->is_null() || gis_datum2->is_null()) {
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res.set_null();
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} else if (OB_FAIL(get_input_geometry(
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srs_guard, gis_datum1, ctx, gis_arg1, is_geo1_null, srs1, geo1, is_geo1_empty))) {
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LOG_WARN("fail to get input geometry", K(ret));
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} else if (OB_FAIL(get_input_geometry(
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srs_guard, gis_datum2, ctx, gis_arg2, is_geo2_null, srs2, geo2, is_geo2_empty))) {
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LOG_WARN("fail to get input geometry", K(ret));
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} else {
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uint32_t srid1 = srs1 == nullptr ? 0 : srs1->get_srid();
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uint32_t srid2 = srs2 == nullptr ? 0 : srs2->get_srid();
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if (srid1 != srid2) {
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ret = OB_ERR_GIS_DIFFERENT_SRIDS;
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LOG_WARN("srid not the same", K(ret), K(srid1), K(srid2));
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LOG_USER_ERROR(OB_ERR_GIS_DIFFERENT_SRIDS, N_PRIV_ST_TOUCHES, srid1, srid2);
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} else if (is_geo1_empty || is_geo2_empty) {
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res.set_bool(false);
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} else if (OB_FAIL(ObGeoExprUtils::zoom_in_geos_for_relation(*geo1, *geo2))) {
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LOG_WARN("zoom in geos failed", K(ret));
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} else {
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bool result = false;
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ObGeoEvalCtx gis_context(&temp_allocator, srs1);
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if (OB_FAIL(gis_context.append_geo_arg(geo1)) || OB_FAIL(gis_context.append_geo_arg(geo2))) {
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LOG_WARN("build gis context failed", K(ret), K(gis_context.get_geo_count()));
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} else if (OB_FAIL(ObGeoFunc<ObGeoFuncType::Touches>::geo_func::eval(gis_context, result))) {
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LOG_WARN("eval st intersection failed", K(ret));
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ObGeoExprUtils::geo_func_error_handle(ret, N_PRIV_ST_TOUCHES);
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} else {
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res.set_bool(result);
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}
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}
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}
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return ret;
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}
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int ObExprPrivSTTouches::cg_expr(
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ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr, 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_priv_st_touches;
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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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