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java.lang.Objectorg.apache.hadoop.mapreduce.ID
public abstract class ID
A general identifier, which internally stores the id
as an integer. This is the super class of JobID,
TaskID and TaskAttemptID.
JobID,
TaskID,
TaskAttemptID| Field Summary | |
|---|---|
protected int |
id
|
protected static char |
SEPARATOR
|
| Constructor Summary | |
|---|---|
protected |
ID()
|
|
ID(int id)
constructs an ID object from the given int |
| Method Summary | |
|---|---|
int |
compareTo(ID that)
Compare IDs by associated numbers |
boolean |
equals(Object o)
|
int |
getId()
returns the int which represents the identifier |
int |
hashCode()
|
void |
readFields(DataInput in)
Deserialize the fields of this object from in. |
String |
toString()
|
void |
write(DataOutput out)
Serialize the fields of this object to out. |
| Methods inherited from class java.lang.Object |
|---|
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
| Field Detail |
|---|
protected static final char SEPARATOR
protected int id
| Constructor Detail |
|---|
public ID(int id)
protected ID()
| Method Detail |
|---|
public int getId()
public String toString()
toString in class Objectpublic int hashCode()
hashCode in class Objectpublic boolean equals(Object o)
equals in class Objectpublic int compareTo(ID that)
compareTo in interface Comparable<ID>
public void readFields(DataInput in)
throws IOException
Writablein.
For efficiency, implementations should attempt to re-use storage in the existing object where possible.
readFields in interface Writablein - DataInput to deseriablize this object from.
IOException
public void write(DataOutput out)
throws IOException
Writableout.
write in interface Writableout - DataOuput to serialize this object into.
IOException
|
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