115 lines
4.1 KiB
C++
115 lines
4.1 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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* This file contains implementation for rb_to_string.
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*/
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#define USING_LOG_PREFIX SQL_ENG
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#include "sql/engine/expr/ob_expr_rb_to_string.h"
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#include "sql/engine/expr/ob_expr_rb_func_helper.h"
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#include "lib/roaringbitmap/ob_roaringbitmap.h"
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#include "lib/roaringbitmap/ob_rb_utils.h"
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#include "sql/engine/expr/ob_expr_lob_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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ObExprRbToString::ObExprRbToString(common::ObIAllocator &alloc)
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: ObFuncExprOperator(alloc, T_FUN_SYS_RB_TO_STRING, N_RB_TO_STRING, 1, VALID_FOR_GENERATED_COL, NOT_ROW_DIMENSION)
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{
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}
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ObExprRbToString::~ObExprRbToString()
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{
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}
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int ObExprRbToString::calc_result_type1(ObExprResType &type,
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ObExprResType &type1,
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common::ObExprTypeCtx &type_ctx) const
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{
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UNUSED(type_ctx);
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INIT_SUCC(ret);
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if (ob_is_null(type1.get_type())) {
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// do nothing
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} else if (!(type1.is_roaringbitmap() || type1.is_hex_string())) {
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ret = OB_ERR_INVALID_TYPE_FOR_ARGUMENT;
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LOG_WARN("invalid roaringbitmap data type provided.", K(ret), K(type1.get_type()), K(type1.get_collation_type()));
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}
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if (OB_SUCC(ret)) {
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type.set_type(ObLongTextType);
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type.set_collation_type(CS_TYPE_UTF8MB4_GENERAL_CI);
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type.set_collation_level(CS_LEVEL_IMPLICIT);
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type.set_accuracy(ObAccuracy::DDL_DEFAULT_ACCURACY[ObLongTextType]);
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}
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return ret;
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}
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int ObExprRbToString::eval_rb_to_string(const ObExpr &expr,
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ObEvalCtx &ctx,
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ObDatum &res)
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{
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INIT_SUCC(ret);
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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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lib::ObMallocHookAttrGuard malloc_guard(lib::ObMemAttr(ObRbExprHelper::get_tenant_id(ctx.exec_ctx_.get_my_session()), "ROARINGBITMAP"));
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ObExpr *arg = expr.args_[0];
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bool is_rb_null = false;
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ObDatum *datum = nullptr;
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ObString rb_bin;
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ObString rb_str;
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if (OB_FAIL(arg->eval(ctx, datum))) {
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LOG_WARN("eval roaringbitmap args failed", K(ret));
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} else if (datum->is_null()) {
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is_rb_null = true;
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} else if (OB_FALSE_IT(rb_bin = datum->get_string())) {
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} else if (OB_FAIL(ObTextStringHelper::read_real_string_data(tmp_allocator,
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*datum,
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arg->datum_meta_,
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arg->obj_meta_.has_lob_header(),
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rb_bin))) {
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LOG_WARN("failed to get real string data", K(ret), K(rb_bin));
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}
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if (OB_FAIL(ret)) {
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} else if (is_rb_null) {
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res.set_null();
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} else if (OB_FAIL(ObRbUtils::rb_to_string(tmp_allocator, rb_bin, rb_str))) {
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LOG_WARN("failed to print roaringbitmap to string", K(ret));
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} else {
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ObTextStringDatumResult str_result(expr.datum_meta_.type_, &expr, &ctx, &res);
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if (OB_FAIL(str_result.init(rb_str.length()))) {
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LOG_WARN("failed to init result", K(ret), K(rb_str.length()));
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} else if (OB_FAIL(str_result.append(rb_str.ptr(), rb_str.length()))) {
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LOG_WARN("failed to append realdata", K(ret), K(rb_str));
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} else {
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str_result.set_result();
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}
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}
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return ret;
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}
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int ObExprRbToString::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_ = ObExprRbToString::eval_rb_to_string;
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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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