wt.fc.collections
Class WTKeyedHashMap

java.lang.Object
  java.util.AbstractMap
      wt.fc.collections.WTKeyedHashMap

All Implemented Interfaces:

Externalizable, Serializable, Cloneable, Map, WTKeyedMap, ResultProcessor

Direct Known Subclasses:

WTValuedHashMap

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

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

Supported API: true

Extendable: false

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface wt.fc.collections.WTKeyedMap

wt.fc.collections.WTKeyedMap.WTEntry

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

Map.Entry<K,V>

Constructor Summary

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

void	addElement(Object anObj) This method is called by the low level persistence layer to add the specified object to the result.
Object	clone() Supported API: true
WTKeyedHashMap	clone(boolean deep) Supported API: true
boolean	equals(Object o) Supported API: true
Object	get(Persistable p) Supported API: true
boolean	isEmpty() 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

Constructor Detail

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 Detail

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

equals

public boolean equals(Object o)

Supported API: true

Specified by:

equals in interface Map

Specified by:

equals in interface WTKeyedMap

Overrides:

equals in class AbstractMap

Parameters:

o -

Returns:

boolean

get

public Object get(Persistable p)

Supported API: true

Specified by:

get in interface WTKeyedMap

Parameters:

p -

Returns:

Object

isEmpty

public boolean isEmpty()

Supported API: true

Specified by:

isEmpty in interface Map

Specified by:

isEmpty in interface WTKeyedMap

Overrides:

isEmpty in class AbstractMap

Returns:

boolean

addElement

public void addElement(Object anObj)
                throws WTException

This method is called by the low level persistence layer to add the specified object to the result. The actual type of the object is based on the type of query. It may be a Persistable or an Object[].

Supported API: true

Specified by:

addElement in interface ResultProcessor

Parameters:

anObj - Result object to add.

Throws:

WTException - - if the object can't be added to the result

WTException