@InterfaceAudience.Public @InterfaceStability.Stable 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() |
boolean |
equals(Object obj) |
Writable |
get(Object key) |
int |
hashCode() |
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() |
String |
toString() |
Collection<Writable> |
values() |
void |
write(DataOutput out)
Serialize the fields of this object to
out . |
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 boolean equals(Object obj)
public int hashCode()
public Collection<Writable> values()
public void write(DataOutput out) throws IOException
Writable
out
.write
in interface Writable
write
in class AbstractMapWritable
out
- DataOuput
to serialize this object into.IOException
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
readFields
in class AbstractMapWritable
in
- DataInput
to deseriablize this object from.IOException
Copyright © 2017 Apache Software Foundation. All rights reserved.