90 lines
2.7 KiB
C++
90 lines
2.7 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 <stdint.h>
|
|
|
|
#include <memory>
|
|
|
|
#include "common/status.h"
|
|
#include "operator.h"
|
|
#include "runtime/descriptors.h"
|
|
|
|
namespace doris {
|
|
class RuntimeState;
|
|
|
|
namespace vectorized {
|
|
class Block;
|
|
} // namespace vectorized
|
|
} // namespace doris
|
|
|
|
namespace doris::pipeline {
|
|
|
|
class EmptySourceOperatorBuilder final : public OperatorBuilderBase {
|
|
public:
|
|
EmptySourceOperatorBuilder(int32_t id, const RowDescriptor& row_descriptor, ExecNode* exec_node)
|
|
: OperatorBuilderBase(id, "EmptySourceOperator"),
|
|
_row_descriptor(row_descriptor),
|
|
_exec_node(exec_node) {}
|
|
|
|
bool is_source() const override { return true; }
|
|
|
|
OperatorPtr build_operator() override;
|
|
|
|
const RowDescriptor& row_desc() const override { return _row_descriptor; }
|
|
|
|
private:
|
|
RowDescriptor _row_descriptor;
|
|
ExecNode* _exec_node = nullptr;
|
|
};
|
|
|
|
class EmptySourceOperator final : public OperatorBase {
|
|
public:
|
|
EmptySourceOperator(OperatorBuilderBase* builder, ExecNode* exec_node)
|
|
: OperatorBase(builder), _exec_node(exec_node) {}
|
|
|
|
bool can_read() override { return true; }
|
|
bool is_pending_finish() const override { return false; }
|
|
|
|
Status prepare(RuntimeState*) override { return Status::OK(); }
|
|
|
|
Status open(RuntimeState*) override { return Status::OK(); }
|
|
|
|
Status get_block(RuntimeState* /*runtime_state*/, vectorized::Block* /*block*/,
|
|
SourceState& result_state) override {
|
|
result_state = SourceState::FINISHED;
|
|
return Status::OK();
|
|
}
|
|
|
|
Status sink(RuntimeState*, vectorized::Block*, SourceState) override { return Status::OK(); }
|
|
|
|
Status close(RuntimeState* state) override {
|
|
RETURN_IF_ERROR(_exec_node->close(state));
|
|
return Status::OK();
|
|
}
|
|
|
|
[[nodiscard]] RuntimeProfile* get_runtime_profile() const override {
|
|
return _exec_node->runtime_profile();
|
|
}
|
|
|
|
private:
|
|
ExecNode* _exec_node = nullptr;
|
|
};
|
|
|
|
} // namespace doris::pipeline
|