143 lines
3.9 KiB
C++
143 lines
3.9 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_ENG
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#include "sql/engine/basic/ob_values.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((ObValues, ObNoChildrenPhyOperator), row_store_);
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class ObValues::ObValuesCtx : public ObPhyOperatorCtx {
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public:
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explicit ObValuesCtx(ObExecContext& ctx) : ObPhyOperatorCtx(ctx), row_store_it_()
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{}
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virtual void destroy()
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{
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ObPhyOperatorCtx::destroy_base();
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}
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private:
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ObRowStore::Iterator row_store_it_;
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friend class ObValues;
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};
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void ObValues::reset()
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{
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row_store_.reset();
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ObNoChildrenPhyOperator::reset();
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}
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void ObValues::reuse()
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{
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row_store_.reuse();
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ObNoChildrenPhyOperator::reuse();
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}
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// not used so far, may be use later
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int ObValues::add_row(const ObNewRow& row)
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{
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return row_store_.add_row(row);
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}
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int ObValues::inner_open(ObExecContext& ctx) const
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{
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int ret = OB_SUCCESS;
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ObValuesCtx* values_ctx = NULL;
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if (OB_FAIL(init_op_ctx(ctx))) {
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LOG_WARN("fail to init operator context", K(ret));
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} else if (OB_ISNULL(values_ctx = GET_PHY_OPERATOR_CTX(ObValuesCtx, ctx, get_id()))) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("fail to get physical operator context");
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} else {
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values_ctx->row_store_it_ = row_store_.begin();
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}
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return ret;
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}
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// not used so far, may be use later
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int ObValues::rescan(ObExecContext& ctx) const
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{
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int ret = OB_SUCCESS;
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ObValuesCtx* values_ctx = NULL;
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if (OB_FAIL(ObNoChildrenPhyOperator::rescan(ctx))) {
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LOG_WARN("rescan ObNoChildrenPhyOperator failed", K(ret));
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} else if (OB_ISNULL(values_ctx = GET_PHY_OPERATOR_CTX(ObValuesCtx, ctx, get_id()))) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("values_ctx is null");
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} else {
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values_ctx->row_store_it_ = row_store_.begin();
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}
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return ret;
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}
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int ObValues::inner_close(ObExecContext& ctx) const
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{
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UNUSED(ctx);
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return OB_SUCCESS;
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}
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int ObValues::init_op_ctx(ObExecContext& ctx) const
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{
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int ret = OB_SUCCESS;
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ObPhyOperatorCtx* op_ctx = NULL;
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if (OB_FAIL(CREATE_PHY_OPERATOR_CTX(ObValuesCtx, ctx, get_id(), get_type(), op_ctx))) {
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LOG_WARN("create physical operator context failed", K(ret));
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} else if (OB_ISNULL(op_ctx)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("op_ctx is null");
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} else if (OB_FAIL(op_ctx->create_cur_row(get_column_count(), projector_, projector_size_))) {
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LOG_WARN("create current row failed", K(ret), "#columns", get_column_count());
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}
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return ret;
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}
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int ObValues::inner_get_next_row(ObExecContext& ctx, const ObNewRow*& row) const
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{
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int ret = OB_SUCCESS;
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ObValuesCtx* values_ctx = NULL;
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if (OB_ISNULL(values_ctx = GET_PHY_OPERATOR_CTX(ObValuesCtx, ctx, get_id()))) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("fail to get physical operator context");
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} else if (OB_FAIL(THIS_WORKER.check_status())) {
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LOG_WARN("check physical plan status failed", K(ret));
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} else if (OB_FAIL(values_ctx->row_store_it_.get_next_row(values_ctx->get_cur_row()))) {
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if (OB_ITER_END != ret) {
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LOG_WARN("fail to get next row", K(ret));
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}
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} else {
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row = &values_ctx->get_cur_row();
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}
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return ret;
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}
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int64_t ObValues::to_string_kv(char* buf, const int64_t buf_len) const
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{
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int64_t pos = 0;
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J_KV(N_ROW_STORE, row_store_);
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return pos;
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}
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int ObValues::set_row_store(const common::ObRowStore& row_store)
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{
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int ret = OB_SUCCESS;
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if (OB_FAIL(row_store_.assign(row_store))) {
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LOG_WARN("fail to assign row store", K(ret));
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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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