Package wt.fc.collections

Class WTKeyedHashMap

java.lang.Object

java.util.AbstractMap

wt.fc.collections.WTKeyedHashMap

All Implemented Interfaces:

Externalizable, Serializable, Cloneable, Map, WTKeyedMap, ResultProcessor, Evolvable

Direct Known Subclasses:

WTValuedHashMap

public class WTKeyedHashMap
extends AbstractMap
implements Cloneable, WTKeyedMap, ResultProcessor, Evolvable

Follows the patterns established by the default collection implementations. The implementation of ResultProcessor.addElement(Object) uses the following algorithm:

• If the object is a Persistable, puts it in the map with a null value
• If the object is a 2-element array of Persistables, adds them as a key/value pair
• If the object is a 2-element array of String,Number, then creates a QueryKey and puts it in the map with a null value
• If the object is a 4-element array of String,Number,String,Number, then creates a QueryKey for each pair and adds them as a key/value pair

Note: this class is Evolvable. Remember: anything you put into the database needs to be able to come back out later (perhaps much later. You will especially want to think twice before blobbing this map because the values can be anything, including instances of classes you have no control over. See also other warnings related to evolvable collections (such as WTValuedHashMap's warning.

Supported API: true

Extendable: false

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K extends Object,V extends Object>, AbstractMap.SimpleImmutableEntry<K extends Object,V extends Object>

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K extends Object,V extends Object>

Constructor Summary

Constructors

Constructor	Description
WTKeyedHashMap()	Supported API: true
WTKeyedHashMap(int initial_capacity)	Supported API: true
WTKeyedHashMap(int initial_capacity, int key_mask)	Supported API: true
WTKeyedHashMap(Map m)	Supported API: true
WTKeyedHashMap(Map m, int key_mask)	Supported API: true

Method Summary

Modifier and Type	Method	Description
Object	clone()	Supported API: true
WTKeyedHashMap	clone(boolean deep)	Supported API: true

Methods inherited from class java.util.AbstractMap

toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Constructor Details

WTKeyedHashMap

public WTKeyedHashMap()

Supported API: true

WTKeyedHashMap

public WTKeyedHashMap(int initial_capacity)

Supported API: true

Parameters:

initial_capacity -

WTKeyedHashMap

public WTKeyedHashMap(int initial_capacity,
 int key_mask)

Supported API: true

Parameters:

initial_capacity -

key_mask -

WTKeyedHashMap

public WTKeyedHashMap(Map m)

Supported API: true

Parameters:

m -

WTKeyedHashMap

public WTKeyedHashMap(Map m,
 int key_mask)

Supported API: true

Parameters:

m -

key_mask -

Method Details

clone

public Object clone()

Supported API: true

Overrides:

clone in class AbstractMap

Returns:

Object

clone

public WTKeyedHashMap clone(boolean deep)

Supported API: true

Parameters:

deep -

Returns:

WTKeyedHashMap