@InterfaceAudience.Private public class Writables extends Object
Constructor and Description |
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Writables() |
Modifier and Type | Method and Description |
---|---|
static Writable |
copyWritable(byte[] bytes,
Writable tgt)
Copy one Writable to another.
|
static Writable |
copyWritable(Writable src,
Writable tgt)
Copy one Writable to another.
|
static byte[] |
getBytes(Writable... ws)
Put a bunch of Writables as bytes all into the one byte array.
|
static byte[] |
getBytes(Writable w) |
static Writable |
getWritable(byte[] bytes,
int offset,
int length,
Writable w)
Set bytes into the passed Writable by calling its
Writable#readFields(java.io.DataInput) . |
static Writable |
getWritable(byte[] bytes,
Writable w)
Set bytes into the passed Writable by calling its
Writable#readFields(java.io.DataInput) . |
public static byte[] getBytes(Writable w) throws IOException
w
- writablew
gotten by running its
Writable#write(java.io.DataOutput)
method.IOException
- egetWritable(byte[], Writable)
public static byte[] getBytes(Writable... ws) throws IOException
ws
- writablew
gotten by running its
Writable#write(java.io.DataOutput)
method.IOException
- epublic static Writable getWritable(byte[] bytes, Writable w) throws IOException
Writable#readFields(java.io.DataInput)
.bytes
- serialized bytesw
- An empty Writable (usually made by calling the null-arg
constructor).bytes
array or IllegalArgumentException
if passed null or an empty bytes
array.IOException
- eIllegalArgumentException
public static Writable getWritable(byte[] bytes, int offset, int length, Writable w) throws IOException
Writable#readFields(java.io.DataInput)
.bytes
- serialized bytesoffset
- offset into arraylength
- length of dataw
- An empty Writable (usually made by calling the null-arg
constructor).bytes
array or IllegalArgumentException
if passed null or an empty bytes
array.IOException
- eIllegalArgumentException
public static Writable copyWritable(Writable src, Writable tgt) throws IOException
src
- Source Writabletgt
- Target WritableIOException
- epublic static Writable copyWritable(byte[] bytes, Writable tgt) throws IOException
bytes
- Source Writabletgt
- Target WritableIOException
- e