com.beasys.commerce.util
Class SoftHashMap

java.lang.Object
  java.util.AbstractMap
      com.beasys.commerce.util.SoftHashMap

All Implemented Interfaces

Serializable, Cloneable, Map

Deprecated See BEA Commerce product offering

@Deprecated
public class SoftHashMap
extends AbstractMap
implements Map, Cloneable, Serializable

A map implemented using SoftReferences to store the values.

Unlike the java.util.WeakHashMap implementation, this does not utilize a ReferenceQueue, therefore, the References are cleared immediately, rather than only after a modification to the Map. Additionally, since this uses SoftReferences by default, the Map shouldn't be immediately cleared. Finally, this is also cloneable and serializable.

Since:

2.0.1-sp1

See Also

Serialized Form

Constructor Summary

SoftHashMap()
Deprecated See BEA Commerce product offering

SoftHashMap(int initialCapacity)
Deprecated See BEA Commerce product offering

SoftHashMap(int initialCapacity, float loadFactor)
Deprecated See BEA Commerce product offering

SoftHashMap(Map map)
Deprecated See BEA Commerce product offering

Method Summary

void	clear() Deprecated See BEA Commerce product offering
Object	clone() Deprecated See BEA Commerce product offering
boolean	containsKey(Object key) Deprecated See BEA Commerce product offering
boolean	containsValue(Object value) Deprecated See BEA Commerce product offering
protected Reference	createReference(Object data) Deprecated See BEA Commerce product offering
Set	entrySet() Deprecated See BEA Commerce product offering
Object	get(Object key) Deprecated See BEA Commerce product offering
boolean	isEmpty() Deprecated See BEA Commerce product offering
Object	put(Object key, Object value) Deprecated See BEA Commerce product offering
Object	remove(Object key) Deprecated See BEA Commerce product offering
int	size() Deprecated See BEA Commerce product offering

Methods inherited from class java.util.AbstractMap

equals, hashCode, keySet, putAll, toString, values

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

equals, hashCode, keySet, putAll, values

Constructor Detail

SoftHashMap

public SoftHashMap(int initialCapacity,
                   float loadFactor)

Deprecated See BEA Commerce product offering

Constructs a new, empty SoftHashMap with the given initial capacity and the given load factor.

Parameters

initialCapacity - The initial capacity of the SoftHashMap

loadFactor - The load factor of the SoftHashMap

Throws

IllegalArgumentException - If the initial capacity is less than zero, or if the load factor is nonpositive

SoftHashMap

public SoftHashMap(int initialCapacity)

Deprecated See BEA Commerce product offering

Constructs a new, empty SoftHashMap with the given initial capacity and the default load factor, which is 0.75.

Parameters

initialCapacity - The initial capacity of the SoftHashMap

Throws

IllegalArgumentException - If the initial capacity is less than zero

SoftHashMap

public SoftHashMap()

Deprecated See BEA Commerce product offering

Constructs a new, empty SoftHashMap with the default capacity and the default load factor, which is 0.75.

SoftHashMap

public SoftHashMap(Map map)

Deprecated See BEA Commerce product offering

Constructs a new SoftHashMap from the specified Map.

Method Detail

clone

public Object clone()

Deprecated See BEA Commerce product offering

Return a shallow clone of this map.

Overrides:

clone in class AbstractMap

createReference

protected Reference createReference(Object data)

Deprecated See BEA Commerce product offering

Create a Reference object containing the specified object.

This implementation returns SoftReferences. Subclasses can override to return other Reference types.

Parameters

data - the object (can be null).

Returns

a Reference (can be null if data is null).

size

public int size()

Deprecated See BEA Commerce product offering

Returns the number of key-value mappings in this map. Note: In contrast with most implementations of the Map interface, the time required by this operation is linear in the size of the map.

Specified by:

size in interface Map

Overrides:

size in class AbstractMap

isEmpty

public boolean isEmpty()

Deprecated See BEA Commerce product offering

Returns true if this map contains no key-value mappings.

Specified by:

isEmpty in interface Map

Overrides:

isEmpty in class AbstractMap

containsKey

public boolean containsKey(Object key)

Deprecated See BEA Commerce product offering

Returns true if this map contains a mapping for the specified key.

Specified by:

containsKey in interface Map

Overrides:

containsKey in class AbstractMap

Parameters

key - The key whose presence in this map is to be tested

containsValue

public boolean containsValue(Object value)

Deprecated See BEA Commerce product offering

Returns true if this map contains the specified value.

Specified by:

containsValue in interface Map

Overrides:

containsValue in class AbstractMap

get

public Object get(Object key)

Deprecated See BEA Commerce product offering

Returns the value to which this map maps the specified key. If this map does not contain a value for this key, then return null.

Specified by:

get in interface Map

Overrides:

get in class AbstractMap

Parameters

key - The key whose associated value, if any, is to be returned

put

public Object put(Object key,
                  Object value)

Deprecated See BEA Commerce product offering

Updates this map so that the given key maps to the given value. If the map previously contained a mapping for key then that mapping is replaced and the previous value is returned.

Specified by:

put in interface Map

Overrides:

put in class AbstractMap

Parameters

key - The key that is to be mapped to the given value

value - The value to which the given key is to be mapped

Returns

The previous value to which this key was mapped, or null if if there was no mapping for the key

remove

public Object remove(Object key)

Deprecated See BEA Commerce product offering

Removes the mapping for the given key from this map, if present.

Specified by:

remove in interface Map

Overrides:

remove in class AbstractMap

Parameters

key - The key whose mapping is to be removed

Returns

The value to which this key was mapped, or null if there was no mapping for the key

clear

public void clear()

Deprecated See BEA Commerce product offering

Removes all mappings from this map.

Specified by:

clear in interface Map

Overrides:

clear in class AbstractMap

entrySet

public Set entrySet()

Deprecated See BEA Commerce product offering

Returns a Set view of the mappings in this map.

Specified by:

entrySet in interface Map

Specified by:

entrySet in class AbstractMap