@InterfaceAudience.Public @InterfaceStability.Stable public class BytesWritable extends BinaryComparable implements WritableComparable<BinaryComparable>
Constructor and Description |
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BytesWritable()
Create a zero-size sequence.
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BytesWritable(byte[] bytes)
Create a BytesWritable using the byte array as the initial value.
|
BytesWritable(byte[] bytes,
int length)
Create a BytesWritable using the byte array as the initial value
and length as the length.
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Modifier and Type | Method and Description |
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byte[] |
copyBytes()
Get a copy of the bytes that is exactly the length of the data.
|
boolean |
equals(Object right_obj)
Are the two byte sequences equal?
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byte[] |
get()
Deprecated.
Use
getBytes() instead. |
byte[] |
getBytes()
Get the data backing the BytesWritable.
|
int |
getCapacity()
Get the capacity, which is the maximum size that could handled without
resizing the backing storage.
|
int |
getLength()
Get the current size of the buffer.
|
int |
getSize()
Deprecated.
Use
getLength() instead. |
int |
hashCode()
Return a hash of the bytes returned from {#getBytes()}.
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void |
readFields(DataInput in)
Deserialize the fields of this object from
in . |
void |
set(byte[] newData,
int offset,
int length)
Set the value to a copy of the given byte range
|
void |
set(BytesWritable newData)
Set the BytesWritable to the contents of the given newData.
|
void |
setCapacity(int new_cap)
Change the capacity of the backing storage.
|
void |
setSize(int size)
Change the size of the buffer.
|
String |
toString()
Generate the stream of bytes as hex pairs separated by ' '.
|
void |
write(DataOutput out)
Serialize the fields of this object to
out . |
compareTo, compareTo
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
compareTo
public BytesWritable()
public BytesWritable(byte[] bytes)
bytes
- This array becomes the backing storage for the object.public BytesWritable(byte[] bytes, int length)
bytes
- This array becomes the backing storage for the object.length
- The number of bytes to use from array.public byte[] copyBytes()
getBytes()
for faster access to the underlying array.public byte[] getBytes()
copyBytes()
if you need the returned array to be precisely the length of the data.getBytes
in class BinaryComparable
@Deprecated public byte[] get()
getBytes()
instead.public int getLength()
getLength
in class BinaryComparable
@Deprecated public int getSize()
getLength()
instead.public void setSize(int size)
size
- The new number of bytespublic int getCapacity()
public void setCapacity(int new_cap)
new_cap
- The new capacity in bytes.public void set(BytesWritable newData)
newData
- the value to set this BytesWritable to.public void set(byte[] newData, int offset, int length)
newData
- the new values to copy inoffset
- the offset in newData to start atlength
- the number of bytes to copypublic void readFields(DataInput in) throws IOException
Writable
in
.
For efficiency, implementations should attempt to re-use storage in the existing object where possible.
readFields
in interface Writable
in
- DataInput
to deseriablize this object from.IOException
public void write(DataOutput out) throws IOException
Writable
out
.write
in interface Writable
out
- DataOuput
to serialize this object into.IOException
public int hashCode()
BinaryComparable
hashCode
in class BinaryComparable
WritableComparator.hashBytes(byte[],int)
public boolean equals(Object right_obj)
equals
in class BinaryComparable
Copyright © 2018 Apache Software Foundation. All rights reserved.