Package org.apache.hugegraph.computer.core.io

Class BufferedFileOutput

java.lang.Object

org.apache.hugegraph.computer.core.io.UnsafeBytesOutput

org.apache.hugegraph.computer.core.io.AbstractBufferedFileOutput

org.apache.hugegraph.computer.core.io.BufferedFileOutput

All Implemented Interfaces:

java.io.Closeable, java.io.DataOutput, java.lang.AutoCloseable, org.apache.hugegraph.computer.core.io.BytesOutput, org.apache.hugegraph.computer.core.io.RandomAccessOutput

public class BufferedFileOutput
extends AbstractBufferedFileOutput

This class acted as new DataOutputStream(new BufferedOutputStream(new File (file))). It has two functions. The first is buffer the content until the buffer is full. The second is unsafe data output. This class is not thread safe.

Field Summary

Fields inherited from class org.apache.hugegraph.computer.core.io.AbstractBufferedFileOutput

fileOffset

Constructor Summary

Constructors

Constructor	Description
BufferedFileOutput(java.io.File file)
BufferedFileOutput(java.io.RandomAccessFile file, int bufferCapacity)

Method Summary

Modifier and Type	Method	Description
void	close()
protected void	flushBuffer()
void	seek(long position)
void	write(byte[] b)
void	write(byte[] b, int off, int len)

Methods inherited from class org.apache.hugegraph.computer.core.io.AbstractBufferedFileOutput

bufferAvailable, bufferCapacity, bufferSize, position, require, skip, writeFixedInt

Methods inherited from class org.apache.hugegraph.computer.core.io.UnsafeBytesOutput

buffer, require, toByteArray, write, write, writeBoolean, writeByte, writeBytes, writeChar, writeChars, writeDouble, writeFixedInt, writeFloat, writeInt, writeLong, writeShort, writeUTF

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BufferedFileOutput

public BufferedFileOutput(java.io.File file)
                   throws java.io.IOException

Throws:

java.io.IOException

BufferedFileOutput

public BufferedFileOutput(java.io.RandomAccessFile file,
                          int bufferCapacity)

Method Detail

write

public void write(byte[] b)
           throws java.io.IOException

Specified by:

write in interface java.io.DataOutput

Overrides:

write in class UnsafeBytesOutput

Throws:

java.io.IOException

write

public void write(byte[] b,
                  int off,
                  int len)
           throws java.io.IOException

Specified by:

write in interface java.io.DataOutput

Overrides:

write in class UnsafeBytesOutput

Throws:

java.io.IOException

seek

public void seek(long position)
          throws java.io.IOException

Specified by:

seek in interface org.apache.hugegraph.computer.core.io.RandomAccessOutput

Overrides:

seek in class UnsafeBytesOutput

Throws:

java.io.IOException

flushBuffer

protected void flushBuffer()
                    throws java.io.IOException

Specified by:

flushBuffer in class AbstractBufferedFileOutput

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable

Overrides:

close in class UnsafeBytesOutput

Throws:

java.io.IOException