PARQUET-1822: Avoid requiring Hadoop installation for reading/writing #1111
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,102 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
| package org.apache.parquet.io; | ||
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| import java.io.IOException; | ||
| import java.io.RandomAccessFile; | ||
| import java.nio.ByteBuffer; | ||
| import java.nio.file.Path; | ||
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| /** | ||
| * {@code LocalInputFile} is an implementation needed by Parquet to read | ||
| * from local data files using {@link SeekableInputStream} instances. | ||
| */ | ||
| public class LocalInputFile implements InputFile { | ||
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| private final Path path; | ||
| private long length = -1; | ||
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| public LocalInputFile(Path file) { | ||
| path = file; | ||
| } | ||
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| @Override | ||
| public long getLength() throws IOException { | ||
| if (length == -1) { | ||
| try (RandomAccessFile file = new RandomAccessFile(path.toFile(), "r")) { | ||
| length = file.length(); | ||
| } | ||
| } | ||
| return length; | ||
| } | ||
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| @Override | ||
| public SeekableInputStream newStream() throws IOException { | ||
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| return new SeekableInputStream() { | ||
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| private final RandomAccessFile randomAccessFile = new RandomAccessFile(path.toFile(), "r"); | ||
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| @Override | ||
| public int read() throws IOException { | ||
| return randomAccessFile.read(); | ||
| } | ||
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| @Override | ||
| public long getPos() throws IOException { | ||
| return randomAccessFile.getFilePointer(); | ||
| } | ||
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| @Override | ||
| public void seek(long newPos) throws IOException { | ||
| randomAccessFile.seek(newPos); | ||
| } | ||
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| @Override | ||
| public void readFully(byte[] bytes) throws IOException { | ||
| randomAccessFile.readFully(bytes); | ||
| } | ||
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| @Override | ||
| public void readFully(byte[] bytes, int start, int len) throws IOException { | ||
| randomAccessFile.readFully(bytes, start, len); | ||
| } | ||
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| @Override | ||
| public int read(ByteBuffer buf) throws IOException { | ||
| byte[] buffer = new byte[buf.remaining()]; | ||
| int code = read(buffer); | ||
| buf.put(buffer, buf.position() + buf.arrayOffset(), buf.remaining()); | ||
| return code; | ||
| } | ||
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| @Override | ||
| public void readFully(ByteBuffer buf) throws IOException { | ||
| byte[] buffer = new byte[buf.remaining()]; | ||
| readFully(buffer); | ||
| buf.put(buffer, buf.position() + buf.arrayOffset(), buf.remaining()); | ||
| } | ||
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| @Override | ||
| public void close() throws IOException { | ||
| randomAccessFile.close(); | ||
| } | ||
| }; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
| package org.apache.parquet.io; | ||
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| import java.io.BufferedOutputStream; | ||
| import java.io.IOException; | ||
| import java.nio.file.Files; | ||
| import java.nio.file.Path; | ||
| import java.nio.file.StandardOpenOption; | ||
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| /** | ||
| * {@code LocalOutputFile} is an implementation needed by Parquet to write | ||
| * to local data files using {@link PositionOutputStream} instances. | ||
| */ | ||
| public class LocalOutputFile implements OutputFile { | ||
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| private class LocalPositionOutputStream extends PositionOutputStream { | ||
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| private final BufferedOutputStream stream; | ||
| private long pos = 0; | ||
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| public LocalPositionOutputStream(int buffer, StandardOpenOption... openOption) throws IOException { | ||
| stream = new BufferedOutputStream(Files.newOutputStream(path, openOption), buffer); | ||
| } | ||
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| @Override | ||
| public long getPos() { | ||
| return pos; | ||
| } | ||
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| @Override | ||
| public void write(int data) throws IOException { | ||
| pos++; | ||
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| stream.write(data); | ||
| } | ||
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| @Override | ||
| public void write(byte[] data) throws IOException { | ||
| pos += data.length; | ||
| stream.write(data); | ||
| } | ||
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| @Override | ||
| public void write(byte[] data, int off, int len) throws IOException { | ||
| pos += len; | ||
| stream.write(data, off, len); | ||
| } | ||
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| @Override | ||
| public void flush() throws IOException { | ||
| stream.flush(); | ||
| } | ||
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| @Override | ||
| public void close() throws IOException { | ||
| stream.close(); | ||
| } | ||
| } | ||
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| private final Path path; | ||
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| public LocalOutputFile(Path file) { | ||
| path = file; | ||
| } | ||
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| @Override | ||
| public PositionOutputStream create(long buffer) throws IOException { | ||
|
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| return new LocalPositionOutputStream((int) buffer, StandardOpenOption.CREATE_NEW); | ||
| } | ||
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| @Override | ||
| public PositionOutputStream createOrOverwrite(long buffer) throws IOException { | ||
| return new LocalPositionOutputStream((int) buffer, StandardOpenOption.CREATE, | ||
| StandardOpenOption.TRUNCATE_EXISTING); | ||
| } | ||
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| @Override | ||
| public boolean supportsBlockSize() { | ||
| return true; | ||
| } | ||
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| @Override | ||
| public long defaultBlockSize() { | ||
| return 512; | ||
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| } | ||
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| @Override | ||
| public String getPath() { | ||
| return path.toString(); | ||
| } | ||
| } | ||
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