Package gnu.trove.decorator
Class TShortByteHashMapDecorator
- java.lang.Object
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- java.util.AbstractMap<java.lang.Short,java.lang.Byte>
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- gnu.trove.decorator.TShortByteHashMapDecorator
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- All Implemented Interfaces:
java.io.Externalizable
,java.io.Serializable
,java.lang.Cloneable
,java.util.Map<java.lang.Short,java.lang.Byte>
public class TShortByteHashMapDecorator extends java.util.AbstractMap<java.lang.Short,java.lang.Byte> implements java.util.Map<java.lang.Short,java.lang.Byte>, java.io.Externalizable, java.lang.Cloneable
Wrapper class to make a TShortByteHashMap conform to the java.util.Map API. This class simply decorates an underlying TShortByteHashMap and translates the Object-based APIs into their Trove primitive analogs. Note that wrapping and unwrapping primitive values is extremely inefficient. If possible, users of this class should override the appropriate methods in this class and use a table of canonical values. Created: Mon Sep 23 22:07:40 PDT 2002- Author:
- Eric D. Friedman, Rob Eden
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description protected TShortByteHashMap
_map
the wrapped primitive map
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Constructor Summary
Constructors Constructor Description TShortByteHashMapDecorator()
FOR EXTERNALIZATION ONLY!!TShortByteHashMapDecorator(TShortByteHashMap map)
Creates a wrapper that decorates the specified primitive map.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
clear()
Empties the map.TShortByteHashMapDecorator
clone()
Clones the underlying trove collection and returns the clone wrapped in a new decorator instance.boolean
containsKey(java.lang.Object key)
Checks for the present of key in the keys of the map.boolean
containsValue(java.lang.Object val)
Checks for the presence of val in the values of the map.java.util.Set<java.util.Map.Entry<java.lang.Short,java.lang.Byte>>
entrySet()
Returns a Set view on the entries of the map.java.lang.Byte
get(java.lang.Short key)
Retrieves the value for keyTShortByteHashMap
getMap()
Returns a reference to the map wrapped by this decorator.boolean
isEmpty()
Indicates whether map has any entries.java.lang.Byte
put(java.lang.Short key, java.lang.Byte value)
Inserts a key/value pair into the map.void
putAll(java.util.Map<? extends java.lang.Short,? extends java.lang.Byte> map)
Copies the key/value mappings in map into this map.void
readExternal(java.io.ObjectInput in)
java.lang.Byte
remove(java.lang.Short key)
Deletes a key/value pair from the map.int
size()
Returns the number of entries in the map.protected short
unwrapKey(java.lang.Object key)
Unwraps a keyprotected byte
unwrapValue(java.lang.Object value)
Unwraps a valueprotected java.lang.Short
wrapKey(short k)
Wraps a keyprotected java.lang.Byte
wrapValue(byte k)
Wraps a valuevoid
writeExternal(java.io.ObjectOutput out)
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Methods inherited from class java.util.AbstractMap
equals, get, hashCode, keySet, remove, toString, values
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Field Detail
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_map
protected TShortByteHashMap _map
the wrapped primitive map
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Constructor Detail
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TShortByteHashMapDecorator
public TShortByteHashMapDecorator()
FOR EXTERNALIZATION ONLY!!
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TShortByteHashMapDecorator
public TShortByteHashMapDecorator(TShortByteHashMap map)
Creates a wrapper that decorates the specified primitive map.
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Method Detail
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getMap
public TShortByteHashMap getMap()
Returns a reference to the map wrapped by this decorator.
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clone
public TShortByteHashMapDecorator clone()
Clones the underlying trove collection and returns the clone wrapped in a new decorator instance. This is a shallow clone except where primitives are concerned.- Overrides:
clone
in classjava.util.AbstractMap<java.lang.Short,java.lang.Byte>
- Returns:
- a copy of the receiver
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put
public java.lang.Byte put(java.lang.Short key, java.lang.Byte value)
Inserts a key/value pair into the map.- Specified by:
put
in interfacejava.util.Map<java.lang.Short,java.lang.Byte>
- Overrides:
put
in classjava.util.AbstractMap<java.lang.Short,java.lang.Byte>
- Parameters:
key
- anObject
valuevalue
- anObject
value- Returns:
- the previous value associated with key, or Byte(0) if none was found.
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get
public java.lang.Byte get(java.lang.Short key)
Retrieves the value for key- Parameters:
key
- anObject
value- Returns:
- the value of key or null if no such mapping exists.
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clear
public void clear()
Empties the map.- Specified by:
clear
in interfacejava.util.Map<java.lang.Short,java.lang.Byte>
- Overrides:
clear
in classjava.util.AbstractMap<java.lang.Short,java.lang.Byte>
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remove
public java.lang.Byte remove(java.lang.Short key)
Deletes a key/value pair from the map.- Parameters:
key
- anObject
value- Returns:
- the removed value, or Byte(0) if it was not found in the map
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entrySet
public java.util.Set<java.util.Map.Entry<java.lang.Short,java.lang.Byte>> entrySet()
Returns a Set view on the entries of the map.- Specified by:
entrySet
in interfacejava.util.Map<java.lang.Short,java.lang.Byte>
- Specified by:
entrySet
in classjava.util.AbstractMap<java.lang.Short,java.lang.Byte>
- Returns:
- a
Set
value
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containsValue
public boolean containsValue(java.lang.Object val)
Checks for the presence of val in the values of the map.- Specified by:
containsValue
in interfacejava.util.Map<java.lang.Short,java.lang.Byte>
- Overrides:
containsValue
in classjava.util.AbstractMap<java.lang.Short,java.lang.Byte>
- Parameters:
val
- anObject
value- Returns:
- a
boolean
value
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containsKey
public boolean containsKey(java.lang.Object key)
Checks for the present of key in the keys of the map.- Specified by:
containsKey
in interfacejava.util.Map<java.lang.Short,java.lang.Byte>
- Overrides:
containsKey
in classjava.util.AbstractMap<java.lang.Short,java.lang.Byte>
- Parameters:
key
- anObject
value- Returns:
- a
boolean
value
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size
public int size()
Returns the number of entries in the map.- Specified by:
size
in interfacejava.util.Map<java.lang.Short,java.lang.Byte>
- Overrides:
size
in classjava.util.AbstractMap<java.lang.Short,java.lang.Byte>
- Returns:
- the map's size.
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isEmpty
public boolean isEmpty()
Indicates whether map has any entries.- Specified by:
isEmpty
in interfacejava.util.Map<java.lang.Short,java.lang.Byte>
- Overrides:
isEmpty
in classjava.util.AbstractMap<java.lang.Short,java.lang.Byte>
- Returns:
- true if the map is empty
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putAll
public void putAll(java.util.Map<? extends java.lang.Short,? extends java.lang.Byte> map)
Copies the key/value mappings in map into this map. Note that this will be a deep copy, as storage is by primitive value.- Specified by:
putAll
in interfacejava.util.Map<java.lang.Short,java.lang.Byte>
- Overrides:
putAll
in classjava.util.AbstractMap<java.lang.Short,java.lang.Byte>
- Parameters:
map
- aMap
value
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wrapKey
protected java.lang.Short wrapKey(short k)
Wraps a key- Parameters:
k
- key in the underlying map- Returns:
- an Object representation of the key
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unwrapKey
protected short unwrapKey(java.lang.Object key)
Unwraps a key- Parameters:
key
- wrapped key- Returns:
- an unwrapped representation of the key
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wrapValue
protected java.lang.Byte wrapValue(byte k)
Wraps a value- Parameters:
k
- value in the underlying map- Returns:
- an Object representation of the value
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unwrapValue
protected byte unwrapValue(java.lang.Object value)
Unwraps a value- Parameters:
value
- wrapped value- Returns:
- an unwrapped representation of the value
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readExternal
public void readExternal(java.io.ObjectInput in) throws java.io.IOException, java.lang.ClassNotFoundException
- Specified by:
readExternal
in interfacejava.io.Externalizable
- Throws:
java.io.IOException
java.lang.ClassNotFoundException
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writeExternal
public void writeExternal(java.io.ObjectOutput out) throws java.io.IOException
- Specified by:
writeExternal
in interfacejava.io.Externalizable
- Throws:
java.io.IOException
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