Module org.apache.lucene.misc
Package org.apache.lucene.misc.store
Class DirectIODirectory.DirectIOIndexOutput
- java.lang.Object
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- org.apache.lucene.store.DataOutput
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- org.apache.lucene.store.IndexOutput
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- org.apache.lucene.misc.store.DirectIODirectory.DirectIOIndexOutput
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- All Implemented Interfaces:
java.io.Closeable
,java.lang.AutoCloseable
- Enclosing class:
- DirectIODirectory
private static final class DirectIODirectory.DirectIOIndexOutput extends IndexOutput
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Constructor Summary
Constructors Constructor Description DirectIOIndexOutput(java.nio.file.Path path, java.lang.String name, int blockSize, int bufferSize)
Creates a new instance of DirectIOIndexOutput for writing index output with direct IO bypassing OS buffer
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
close()
Closes this stream to further operations.private void
dump()
long
getChecksum()
Returns the current checksum of bytes written so farlong
getFilePointer()
Returns the current position in this file, where the next write will occur.void
writeByte(byte b)
Writes a single byte.void
writeBytes(byte[] src, int offset, int len)
Writes an array of bytes.-
Methods inherited from class org.apache.lucene.store.IndexOutput
alignFilePointer, alignOffset, getName, toString
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Methods inherited from class org.apache.lucene.store.DataOutput
copyBytes, writeBytes, writeInt, writeLong, writeMapOfStrings, writeSetOfStrings, writeShort, writeString, writeVInt, writeVLong, writeZInt, writeZLong
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Constructor Detail
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DirectIOIndexOutput
public DirectIOIndexOutput(java.nio.file.Path path, java.lang.String name, int blockSize, int bufferSize) throws java.io.IOException
Creates a new instance of DirectIOIndexOutput for writing index output with direct IO bypassing OS buffer- Throws:
java.lang.UnsupportedOperationException
- if the JDK does not support Direct I/Ojava.io.IOException
- if the operating system or filesystem does not support support Direct I/O or a sufficient equivalent.
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Method Detail
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writeByte
public void writeByte(byte b) throws java.io.IOException
Description copied from class:DataOutput
Writes a single byte.The most primitive data type is an eight-bit byte. Files are accessed as sequences of bytes. All other data types are defined as sequences of bytes, so file formats are byte-order independent.
- Specified by:
writeByte
in classDataOutput
- Throws:
java.io.IOException
- See Also:
DataInput.readByte()
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writeBytes
public void writeBytes(byte[] src, int offset, int len) throws java.io.IOException
Description copied from class:DataOutput
Writes an array of bytes.- Specified by:
writeBytes
in classDataOutput
- Parameters:
src
- the bytes to writeoffset
- the offset in the byte arraylen
- the number of bytes to write- Throws:
java.io.IOException
- See Also:
DataInput.readBytes(byte[],int,int)
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dump
private void dump() throws java.io.IOException
- Throws:
java.io.IOException
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getFilePointer
public long getFilePointer()
Description copied from class:IndexOutput
Returns the current position in this file, where the next write will occur.- Specified by:
getFilePointer
in classIndexOutput
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getChecksum
public long getChecksum()
Description copied from class:IndexOutput
Returns the current checksum of bytes written so far- Specified by:
getChecksum
in classIndexOutput
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close
public void close() throws java.io.IOException
Description copied from class:IndexOutput
Closes this stream to further operations.- Specified by:
close
in interfacejava.lang.AutoCloseable
- Specified by:
close
in interfacejava.io.Closeable
- Specified by:
close
in classIndexOutput
- Throws:
java.io.IOException
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