83 lines
3.0 KiB
C++
83 lines
3.0 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
|
|
// or more contributor license agreements. See the NOTICE file
|
|
// distributed with this work for additional information
|
|
// regarding copyright ownership. The ASF licenses this file
|
|
// to you under the Apache License, Version 2.0 (the
|
|
// "License"); you may not use this file except in compliance
|
|
// with the License. You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing,
|
|
// software distributed under the License is distributed on an
|
|
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
|
// KIND, either express or implied. See the License for the
|
|
// specific language governing permissions and limitations
|
|
// under the License.
|
|
|
|
#pragma once
|
|
#include "runtime/descriptors.h"
|
|
#include "runtime/runtime_state.h"
|
|
#include "vec/exprs/vexpr.h"
|
|
#include "vec/functions/function.h"
|
|
|
|
namespace doris {
|
|
namespace vectorized {
|
|
class VColumnRef final : public VExpr {
|
|
ENABLE_FACTORY_CREATOR(VColumnRef);
|
|
|
|
public:
|
|
//this is different of slotref is using slot_id find a column_id
|
|
//slotref: need to find the equal id in tuple, then return column_id, the plan of FE is very important
|
|
//columnref: is columnid = slotid, not used to find, so you should know this column placed in block
|
|
VColumnRef(const TExprNode& node)
|
|
: VExpr(node),
|
|
_column_id(node.column_ref.column_id),
|
|
_column_name(node.column_ref.column_name) {}
|
|
|
|
Status prepare(RuntimeState* state, const RowDescriptor& desc, VExprContext* context) override {
|
|
RETURN_IF_ERROR_OR_PREPARED(VExpr::prepare(state, desc, context));
|
|
DCHECK_EQ(_children.size(), 0);
|
|
if (_column_id < 0) {
|
|
return Status::InternalError(
|
|
"VColumnRef have invalid slot id: {}, _column_name: {}, desc: {}", _column_id,
|
|
_column_name, desc.debug_string());
|
|
}
|
|
_prepare_finished = true;
|
|
return Status::OK();
|
|
}
|
|
|
|
Status open(RuntimeState* state, VExprContext* context,
|
|
FunctionContext::FunctionStateScope scope) override {
|
|
DCHECK(_prepare_finished);
|
|
RETURN_IF_ERROR(VExpr::open(state, context, scope));
|
|
_open_finished = true;
|
|
return Status::OK();
|
|
}
|
|
|
|
Status execute(VExprContext* context, Block* block, int* result_column_id) override {
|
|
DCHECK(_open_finished || _getting_const_col);
|
|
*result_column_id = _column_id;
|
|
return Status::OK();
|
|
}
|
|
|
|
bool is_constant() const override { return false; }
|
|
|
|
int column_id() const { return _column_id; }
|
|
|
|
const std::string& expr_name() const override { return _column_name; }
|
|
|
|
std::string debug_string() const override {
|
|
std::stringstream out;
|
|
out << "VColumnRef(slot_id: " << _column_id << ",column_name: " << _column_name
|
|
<< VExpr::debug_string() << ")";
|
|
return out.str();
|
|
}
|
|
|
|
private:
|
|
int _column_id;
|
|
std::string _column_name;
|
|
};
|
|
} // namespace vectorized
|
|
} // namespace doris
|