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com.facebook.presto.orc.reader.StreamReader Maven / Gradle / Ivy
/*
* 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.
*/
package com.facebook.presto.orc.reader;
import com.facebook.presto.orc.metadata.ColumnEncoding;
import com.facebook.presto.orc.stream.StreamSources;
import com.facebook.presto.spi.block.Block;
import com.facebook.presto.spi.type.Type;
import java.io.IOException;
import java.util.List;
public interface StreamReader
{
Block readBlock(Type type)
throws IOException;
void prepareNextRead(int batchSize);
void startStripe(StreamSources dictionaryStreamSources, List encoding)
throws IOException;
void startRowGroup(StreamSources dataStreamSources)
throws IOException;
}