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src/sql/engine/expr/ob_expr_coll_pred.cpp
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166
src/sql/engine/expr/ob_expr_coll_pred.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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*/
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#define USING_LOG_PREFIX SQL_ENG
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#include "sql/engine/expr/ob_expr_coll_pred.h"
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#include "sql/engine/ob_physical_plan_ctx.h"
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#include "sql/engine/ob_exec_context.h"
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#include "lib/hash/ob_hashmap.h"
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#include "lib/utility/utility.h"
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#include "share/object/ob_obj_cast.h"
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namespace oceanbase {
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using namespace common;
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namespace sql {
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OB_SERIALIZE_MEMBER((ObExprCollPred, ObExprOperator), ms_type_, ms_modifier_);
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typedef hash::ObHashMap<ObObj, int64_t, common::hash::NoPthreadDefendMode> LocalNTSHashMap;
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ObExprCollPred::ObExprCollPred(ObIAllocator& alloc)
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: ObExprOperator(alloc, T_OP_COLL_PRED, N_COLL_PRED, 2, NOT_ROW_DIMENSION)
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{}
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ObExprCollPred::~ObExprCollPred()
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{}
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void ObExprCollPred::reset()
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{
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ms_type_ = ObMultiSetType::MULTISET_TYPE_INVALID;
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ms_modifier_ = ObMultiSetModifier::MULTISET_MODIFIER_INVALID;
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ObExprOperator::reset();
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}
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int ObExprCollPred::assign(const ObExprOperator& other)
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{
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int ret = OB_SUCCESS;
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if (other.get_type() != T_OP_COLL_PRED) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("expr operator is mismatch", K(other.get_type()));
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} else if (OB_FAIL(ObExprOperator::assign(other))) {
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LOG_WARN("assign parent expr failed", K(ret));
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} else {
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const ObExprCollPred& other_expr = static_cast<const ObExprCollPred&>(other);
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ms_type_ = other_expr.ms_type_;
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ms_modifier_ = other_expr.ms_modifier_;
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}
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return ret;
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}
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int ObExprCollPred::calc_result_type2(
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ObExprResType& type, ObExprResType& type1, ObExprResType& type2, ObExprTypeCtx& type_ctx) const
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{
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UNUSED(type_ctx);
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int ret = OB_SUCCESS;
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if (lib::is_oracle_mode()) {
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type.set_type(ObTinyIntType);
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type.set_precision(DEFAULT_PRECISION_FOR_BOOL);
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type.set_scale(DEFAULT_SCALE_FOR_INTEGER);
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} else {
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ret = OB_NOT_SUPPORTED;
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LOG_WARN("multiset operator not support non udt type", K(type1), K(type2), K(ret));
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}
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return ret;
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}
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#define FILL_HASH_MAP(map_name, coll, map_cnt) \
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do { \
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if (OB_FAIL(map_name.create(coll->get_actual_count(), ObModIds::OB_SQL_HASH_SET))) { \
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LOG_WARN("fail create hash map", K(coll->get_actual_count()), K(ret)); \
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} else { \
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const ObObj* elem = NULL; \
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bool is_del = false; \
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ObObj* data_arr = static_cast<ObObj*>(coll->get_data()); \
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for (int64_t i = 0; OB_SUCC(ret) && i < coll->get_count(); ++i) { \
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if (OB_FAIL(coll->is_elem_deleted(i, is_del))) { \
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LOG_WARN("failed to check is collection elem deleted", K(ret)); \
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} else if (!is_del) { \
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elem = data_arr + i; \
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ret = map_name.set_refactored(*elem, i); \
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if (OB_HASH_EXIST == ret) { \
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ret = OB_SUCCESS; \
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continue; \
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} else if (OB_SUCC(ret)) { \
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map_cnt++; \
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} else { \
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LOG_WARN("insert elem into hashmap failed.", K(ret)); \
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} \
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} \
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} \
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} \
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} while (0)
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int ObExprCollPred::compare_obj(const ObObj& obj1, const ObObj& obj2, ObCompareCtx& cmp_ctx)
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{
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UNUSED(cmp_ctx);
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return obj1 == obj2 ? 0 : 1;
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}
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int ObExprCollPred::calc_is_submultiset(const ObObj& obj1, const ObObj& obj2, ObExprCtx& expr_ctx,
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const ObExprCalcType calc_type, CollectionPredRes& result)
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{
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UNUSED(expr_ctx);
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int ret = OB_SUCCESS;
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result = COLL_PRED_FALSE;
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if (obj1.get_meta().is_ext() && obj2.get_meta().is_ext()) {
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ret = OB_NOT_SUPPORTED;
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LOG_WARN("not support", K(calc_type), K(result));
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}
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return ret;
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}
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int ObExprCollPred::calc_result2(ObObj& result, const ObObj& obj1, const ObObj& obj2, ObExprCtx& expr_ctx) const
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{
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int ret = OB_SUCCESS;
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if (lib::is_oracle_mode()) {
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switch (ms_type_) {
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case MULTISET_TYPE_SUBMULTISET: {
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CollectionPredRes res = COLL_PRED_INVALID;
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if (OB_FAIL(calc_is_submultiset(obj1, obj2, expr_ctx, result_type_.get_calc_meta(), res))) {
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LOG_WARN("failed to call submultiset", K(ret));
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} else {
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if (COLL_PRED_NULL == res) {
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result.set_null();
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} else {
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if (res ^ (MULTISET_MODIFIER_NOT == ms_modifier_)) {
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result.set_tinyint(1);
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} else {
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result.set_tinyint(0);
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}
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}
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}
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} break;
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case MULTISET_TYPE_MEMBER_OF: {
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if (obj2.get_meta().is_ext()) {
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ret = OB_NOT_SUPPORTED;
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}
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} break;
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case MULTISET_TYPE_IS_SET: {
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if (obj1.get_meta().is_ext()) {
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ret = OB_NOT_SUPPORTED;
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}
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} break;
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case MULTISET_TYPE_EMPTY: {
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if (obj1.get_meta().is_ext()) {
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ret = OB_NOT_SUPPORTED;
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}
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} break;
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default:
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("unknown collection predicate condition", K(ret));
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break;
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}
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}
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return ret;
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}
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} // namespace sql
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} // namespace oceanbase
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