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java.lang.Object org.apache.hadoop.io.LongWritable
public class LongWritable
A WritableComparable for longs.
Nested Class Summary | |
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static class |
LongWritable.Comparator
A Comparator optimized for LongWritable. |
static class |
LongWritable.DecreasingComparator
A decreasing Comparator optimized for LongWritable. |
Constructor Summary | |
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LongWritable()
|
|
LongWritable(long value)
|
Method Summary | |
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int |
compareTo(Object o)
Compares two LongWritables. |
boolean |
equals(Object o)
Returns true iff o is a LongWritable with the same value. |
long |
get()
Return the value of this LongWritable. |
int |
hashCode()
|
void |
readFields(DataInput in)
Deserialize the fields of this object from in . |
void |
set(long value)
Set the value of this LongWritable. |
String |
toString()
|
void |
write(DataOutput out)
Serialize the fields of this object to out . |
Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public LongWritable()
public LongWritable(long value)
Method Detail |
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public void set(long value)
public long get()
public 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 boolean equals(Object o)
o
is a LongWritable with the same value.
equals
in class Object
public int hashCode()
hashCode
in class Object
public int compareTo(Object o)
compareTo
in interface Comparable
public String toString()
toString
in class Object
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