68 lines
2.1 KiB
C++
68 lines
2.1 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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*/
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#define USING_LOG_PREFIX SQL_RESV
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#include "sql/resolver/prepare/ob_prepare_resolver.h"
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#include "sql/resolver/ob_resolver_utils.h"
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namespace oceanbase
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{
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using namespace common;
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namespace sql
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{
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int ObPrepareResolver::resolve(const ParseNode &parse_tree)
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{
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int ret = OB_SUCCESS;
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ObPrepareStmt *prepare_stmt = NULL;
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const ParseNode *name_node = parse_tree.children_[0];
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const ParseNode *stmt_node = parse_tree.children_[1];
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if (OB_ISNULL(name_node) || OB_ISNULL(stmt_node)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("invalid prepare node", K(name_node), K(stmt_node), K(ret));
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} else if (OB_ISNULL(prepare_stmt = create_stmt<ObPrepareStmt>())) {
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ret = OB_SQL_RESOLVER_NO_MEMORY;
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LOG_WARN("failed to create execute stmt", K(ret));
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} else {
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stmt_ = prepare_stmt;
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}
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if (OB_SUCC(ret)) {
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if (T_IDENT != name_node->type_) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("invalid name node", K(name_node->type_), K(ret));
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} else {
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prepare_stmt->set_prepare_name(ObString(name_node->str_len_, name_node->str_value_));
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}
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}
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if (OB_SUCC(ret)) {
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if (T_VARCHAR == stmt_node->type_ || T_HEX_STRING == stmt_node->type_ || T_OP_GET_USER_VAR == stmt_node->type_) {
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ObRawExpr *stmt_expr = NULL;
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if (OB_FAIL(ObResolverUtils::resolve_const_expr(params_, *stmt_node, stmt_expr, NULL))) {
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LOG_WARN("failed to resolve const expr", K(ret));
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} else {
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prepare_stmt->set_prepare_sql(stmt_expr);
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}
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} else {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("invalid name node", K(name_node->type_), K(ret));
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}
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}
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return ret;
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}
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}
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}
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