#   Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed 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.

import paddle.fluid as fluid

class DatasetBase(object):
    def __init__(self):
        pass

    def type(self):
        return "Base"


class QueueDataset(DatasetBase):
    def __init__(self):
        self.inst = \
            fluid.DatasetFactory().create_dataset()
    
    def type(self):
        return "Queue"

class MemoryDataset(DatasetBase):
    def __init__(self):
        self.inst = \
            fluid.DatasetFactory().create_dataset("InMemoryDataset")

    def type(self):
        return "Memory"
