[FEAT MERGE] GIS
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obdev
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src/sql/engine/expr/ob_expr_point.cpp
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201
src/sql/engine/expr/ob_expr_point.cpp
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/**
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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 point expr.
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*/
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#define USING_LOG_PREFIX SQL_ENG
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#include "sql/engine/expr/ob_expr_point.h"
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#include "lib/geo/ob_geo_bin.h"
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#include "lib/geo/ob_geo_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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ObExprPoint::ObExprPoint(common::ObIAllocator &alloc)
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: ObFuncExprOperator(alloc,
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T_FUN_SYS_POINT,
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N_POINT,
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2,
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NOT_ROW_DIMENSION)
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{
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}
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ObExprPoint::~ObExprPoint()
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{
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}
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int ObExprPoint::calc_result_type2(ObExprResType &type,
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ObExprResType &type1,
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ObExprResType &type2,
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common::ObExprTypeCtx &type_ctx) const
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{
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int ret = OB_SUCCESS;
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UNUSED(type_ctx);
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ObObjType type_x = type1.get_type();
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ObObjType type_y = type2.get_type();
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if (ob_is_geometry_tc(type_x) || ob_is_geometry_tc(type_y)) {
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ret = OB_INVALID_ARGUMENT;
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LOG_USER_ERROR(OB_INVALID_ARGUMENT, "input type should not be geometry type");
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} else {
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if (!ob_is_double_tc(type_x)) {
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type1.set_calc_type(ObDoubleType);
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}
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if (!ob_is_double_tc(type_y)) {
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type2.set_calc_type(ObDoubleType);
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}
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type.set_type(ObGeometryType);
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type.set_collation_level(common::CS_LEVEL_COERCIBLE);
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type.set_collation_type(CS_TYPE_BINARY);
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}
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return ret;
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}
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// for old sql engine
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int ObExprPoint::calc_result2(common::ObObj &result,
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const common::ObObj &obj1,
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const common::ObObj &obj2,
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common::ObExprCtx &expr_ctx) const
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{
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int ret = OB_SUCCESS;
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bool is_null_result = false;
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ObIAllocator *allocator = expr_ctx.calc_buf_;
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ObWkbBuffer res_wkb_buf(*allocator);
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if (OB_ISNULL(allocator)) { // check allocator
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ret = OB_NOT_INIT;
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LOG_WARN("buffer not init", K(ret));
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} else {
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ObObjType type_x = obj1.get_type();
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ObObjType type_y = obj2.get_type();
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if (ob_is_null(type_x) || ob_is_null(type_y)) {
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is_null_result = true;
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} else if (obj1.is_null() || obj2.is_null()) {
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is_null_result = true;
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} else {
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double x = obj1.get_double();
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double y = obj2.get_double();
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uint32_t srid = 0;
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if (OB_FAIL(res_wkb_buf.append(srid))) {
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LOG_WARN("fail to append srid to point wkb buf", K(ret), K(srid));
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} else if (OB_FAIL(res_wkb_buf.append(static_cast<char>(ENCODE_GEO_VERSION(GEO_VESION_1))))) {
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LOG_WARN("fail to append version to point wkb buf", K(ret));
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} else if (OB_FAIL(res_wkb_buf.append(static_cast<char>(ObGeoWkbByteOrder::LittleEndian)))) {
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LOG_WARN("fail to append little endian byte order to point wkb buf", K(ret));
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} else if (OB_FAIL(res_wkb_buf.append(static_cast<uint32_t>(ObGeoType::POINT)))) {
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LOG_WARN("fail to append geo type to point wkb buf", K(ret));
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} else if (OB_FAIL(res_wkb_buf.append(x))) {
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LOG_WARN("fail to append x to point wkb buf", K(ret), K(x));
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} else if (OB_FAIL(res_wkb_buf.append(y))) {
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LOG_WARN("fail to append y to point wkb buf", K(ret), K(y));
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}
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}
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}
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if (OB_SUCC(ret)) {
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if (is_null_result) {
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result.set_null();
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} else {
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char *buf = reinterpret_cast<char *>(allocator->alloc(res_wkb_buf.length()));
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if (OB_ISNULL(buf)) {
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ret = OB_ALLOCATE_MEMORY_FAILED;
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LOG_WARN("fail to alloc memory for result buf", K(ret), K(res_wkb_buf.length()));
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} else {
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MEMMOVE(buf, res_wkb_buf.ptr(), res_wkb_buf.length());
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result.set_collation_type(result_type_.get_collation_type());
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result.set_string(ObGeometryType, buf, res_wkb_buf.length());
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result.set_collation_level(CS_LEVEL_IMPLICIT);
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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 ObExprPoint::eval_point(const ObExpr &expr,
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ObEvalCtx &ctx,
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ObDatum &res)
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{
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int ret = OB_SUCCESS;
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bool is_null_result = false;
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ObDatum *datum_x = NULL;
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ObDatum *datum_y = NULL;
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ObExpr *arg_x = expr.args_[0];
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ObExpr *arg_y = expr.args_[1];
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ObObjType type_x = arg_x->datum_meta_.type_;
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ObObjType type_y = arg_y->datum_meta_.type_;
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ObEvalCtx::TempAllocGuard tmp_alloc_g(ctx);
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common::ObArenaAllocator &tmp_allocator = tmp_alloc_g.get_allocator();
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ObWkbBuffer res_wkb_buf(tmp_allocator);
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if (ob_is_null(type_x) || ob_is_null(type_y)) {
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is_null_result = true;
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} else if (OB_FAIL(arg_x->eval(ctx, datum_x))) {
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LOG_WARN("fail to eval point x arg", K(ret), K(type_x));
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} else if (OB_FAIL(arg_y->eval(ctx, datum_y))) {
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LOG_WARN("fail to eval point y arg", K(ret), K(type_y));
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} else if (datum_x->is_null() || datum_y->is_null()) {
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is_null_result = true;
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} else {
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double x = datum_x->get_double();
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double y = datum_y->get_double();
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uint32_t srid = 0;
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if (OB_FAIL(res_wkb_buf.append(srid))) {
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LOG_WARN("fail to append srid to point wkb buf", K(ret), K(srid));
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} else if (OB_FAIL(res_wkb_buf.append(static_cast<char>(ENCODE_GEO_VERSION(GEO_VESION_1))))) {
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LOG_WARN("fail to append version to point wkb buf", K(ret));
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} else if (OB_FAIL(res_wkb_buf.append(static_cast<char>(ObGeoWkbByteOrder::LittleEndian)))) {
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LOG_WARN("fail to append little endian byte order to point wkb buf", K(ret));
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} else if (OB_FAIL(res_wkb_buf.append(static_cast<uint32_t>(ObGeoType::POINT)))) {
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LOG_WARN("fail to append geo type to point wkb buf", K(ret));
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} else if (OB_FAIL(res_wkb_buf.append(x))) {
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LOG_WARN("fail to append x to point wkb buf", K(ret), K(x));
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} else if (OB_FAIL(res_wkb_buf.append(y))) {
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LOG_WARN("fail to append y to point wkb buf", K(ret), K(y));
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}
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}
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if (OB_SUCC(ret)) {
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if (is_null_result) {
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res.set_null();
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} else {
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char *res_buf = expr.get_str_res_mem(ctx, res_wkb_buf.length());
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if (OB_ISNULL(res_buf)){
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ret = OB_ALLOCATE_MEMORY_FAILED;
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} else {
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MEMCPY(res_buf, res_wkb_buf.ptr(), res_wkb_buf.length());
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res.set_string(res_buf, res_wkb_buf.length());
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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 ObExprPoint::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_point;
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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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