119 lines
3.9 KiB
C++
119 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 SERVER
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#include "observer/virtual_table/ob_tenant_virtual_charset.h"
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#include "lib/charset/ob_charset.h"
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using namespace oceanbase::common;
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namespace oceanbase
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{
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namespace observer
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{
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int ObTenantVirtualCharset::inner_get_next_row(common::ObNewRow *&row)
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{
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int ret = OB_SUCCESS;
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if (!start_to_read_) {
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if (OB_FAIL(fill_scanner())) {
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SERVER_LOG(WARN, "fail to fill scanner", K(ret));
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} else {
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start_to_read_ = true;
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}
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}
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if (OB_SUCCESS == ret && start_to_read_) {
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if (OB_FAIL(scanner_it_.get_next_row(cur_row_))) {
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if (OB_ITER_END != ret) {
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SERVER_LOG(WARN, "fail to get next row", K(ret));
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}
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} else {
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row = &cur_row_;
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}
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}
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return ret;
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}
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int ObTenantVirtualCharset::fill_scanner()
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{
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int ret = OB_SUCCESS;
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ObObj *cells = NULL;
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const ObCharsetWrapper *charset_wrap_arr = NULL;
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int64_t charset_wrap_arr_len = 0;
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ObCharset::get_charset_wrap_arr(charset_wrap_arr, charset_wrap_arr_len);
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if (OB_ISNULL(allocator_)) {
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ret = OB_NOT_INIT;
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LOG_WARN("allocator is NULL", K(ret));
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} else if (OB_ISNULL(cells = cur_row_.cells_)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("cur row cell is NULL", K(ret));
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} else if (OB_ISNULL(charset_wrap_arr) ||
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OB_UNLIKELY(ObCharset::VALID_CHARSET_TYPES != charset_wrap_arr_len)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_ERROR("charset wrap array is NULL or charset_wrap_arr_len is not CHARSET_WRAPPER_COUNT",
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K(ret), K(charset_wrap_arr), K(charset_wrap_arr_len));
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}
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for (int64_t i = 0; OB_SUCC(ret) && i < charset_wrap_arr_len; ++i) {
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int cell_idx = 0;
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ObCharsetWrapper charset_wrap = charset_wrap_arr[i];
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for (int64_t j = 0; OB_SUCC(ret) && j < output_column_ids_.count(); ++j) {
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int64_t col_id = output_column_ids_.at(j);
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switch(col_id) {
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case CHARSET: {
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cells[cell_idx].set_varchar(
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ObString::make_string(ObCharset::charset_name(charset_wrap.charset_)));
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cells[cell_idx].set_collation_type(
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ObCharset::get_default_collation(ObCharset::get_default_charset()));
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break;
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}
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case DESCRIPTION: {
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cells[cell_idx].set_varchar(
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ObString::make_string(charset_wrap.description_));
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cells[cell_idx].set_collation_type(
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ObCharset::get_default_collation(ObCharset::get_default_charset()));
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break;
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}
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case DEFAULT_COLLATION: {
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cells[cell_idx].set_varchar(
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ObString::make_string(ObCharset::collation_name(ObCharset::get_default_collation(charset_wrap.charset_))));
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cells[cell_idx].set_collation_type(
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ObCharset::get_default_collation(ObCharset::get_default_charset()));
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break;
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}
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case MAX_LENGTH: {
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cells[cell_idx].set_int(charset_wrap.maxlen_);
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break;
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}
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default: {
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ret = OB_ERR_UNEXPECTED;
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SERVER_LOG(ERROR, "invalid column id", K(ret), K(cell_idx), K(j),
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K(output_column_ids_), K(col_id));
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break;
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}
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}
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if (OB_SUCC(ret)) {
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cell_idx++;
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}
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}//for
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if (OB_SUCCESS == ret && OB_FAIL(scanner_.add_row(cur_row_))) {
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LOG_WARN("fail to add row", K(ret), K(cur_row_));
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}
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}//for
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if (OB_SUCC(ret)) {
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scanner_it_ = scanner_.begin();
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start_to_read_ = true;
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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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