public class MapWritable extends AbstractMapWritable implements Map<Writable,Writable>
Constructor and Description |
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MapWritable()
Default constructor.
|
MapWritable(MapWritable other)
Copy constructor.
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Modifier and Type | Method and Description |
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void |
clear() |
boolean |
containsKey(Object key) |
boolean |
containsValue(Object value) |
Set<Map.Entry<Writable,Writable>> |
entrySet() |
Writable |
get(Object key) |
boolean |
isEmpty() |
Set<Writable> |
keySet() |
Writable |
put(Writable key,
Writable value) |
void |
putAll(Map<? extends Writable,? extends Writable> t) |
void |
readFields(DataInput in)
Deserialize the fields of this object from
in . |
Writable |
remove(Object key) |
int |
size() |
Collection<Writable> |
values() |
void |
write(DataOutput out)
Serialize the fields of this object to
out . |
addToMap, copy, getClass, getConf, getId, setConf
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
compute, computeIfAbsent, computeIfPresent, equals, forEach, getOrDefault, hashCode, merge, putIfAbsent, remove, replace, replace, replaceAll
public MapWritable()
public MapWritable(MapWritable other)
other
- the map to copy frompublic boolean containsKey(Object key)
containsKey
in interface Map<Writable,Writable>
public boolean containsValue(Object value)
containsValue
in interface Map<Writable,Writable>
public Collection<Writable> values()
public void write(DataOutput out) throws IOException
out
.write
in interface Writable
write
in class AbstractMapWritable
out
- DataOuput
to serialize this object into.IOException
public void readFields(DataInput in) throws IOException
in
.
For efficiency, implementations should attempt to re-use storage in the existing object where possible.
readFields
in interface Writable
readFields
in class AbstractMapWritable
in
- DataInput
to deseriablize this object from.IOException
Copyright © 2010 The Apache Software Foundation