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Oracle Application Server TopLink API Reference 10g Release 2 (10.1.2) B15903-01 |
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java.lang.Object
java.util.Dictionary
java.util.Hashtable
oracle.toplink.indirection.IndirectMap
IndirectMap allows a domain class to take advantage of TopLink indirection without having to declare its instance variable as a ValueHolderInterface.
To use an IndirectMap:
TopLink will place an IndirectMap in the instance variable when the containing domain object is read from the datatabase. With the first message sent to the IndirectMap, the contents are fetched from the database and normal Hashtable/Map behavior is resumed.
CollectionMapping
, IndirectList
, Serialized FormConstructor Summary | |
IndirectMap() PUBLIC: Construct a new, empty IndirectMap with a default capacity and load factor. |
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IndirectMap(int initialCapacity) PUBLIC: Construct a new, empty IndirectMap with the specified initial capacity and default load factor. |
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IndirectMap(int initialCapacity, float loadFactor) PUBLIC: Construct a new, empty IndirectMap with the specified initial capacity and load factor. |
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IndirectMap(java.util.Map m) PUBLIC: Construct a new IndirectMap with the same mappings as the given Map. |
Method Summary | |
void |
clear() |
java.lang.Object |
clone() |
boolean |
contains(java.lang.Object value) |
boolean |
containsKey(java.lang.Object key) |
boolean |
containsValue(java.lang.Object value) |
java.util.Enumeration |
elements() |
java.util.Set |
entrySet() |
boolean |
equals(java.lang.Object o) |
java.lang.Object |
get(java.lang.Object key) |
ValueHolderInterface |
getValueHolder() PUBLIC: Return the valueHolder. |
int |
hashCode() |
boolean |
isEmpty() |
boolean |
isInstantiated() PUBLIC: Return whether the contents have been read from the database. |
java.util.Enumeration |
keys() |
java.util.Set |
keySet() |
java.lang.Object |
put(java.lang.Object key, java.lang.Object value) |
void |
putAll(java.util.Map t) |
java.lang.Object |
remove(java.lang.Object key) |
void |
setValueHolder(ValueHolderInterface valueHolder) PUBLIC: Set the value holder. |
int |
size() |
java.lang.String |
toString() PUBLIC: Use the Hashtable.toString(); but wrap it with braces to indicate there is a bit of indirection. |
java.util.Collection |
values() |
Methods inherited from class java.lang.Object |
getClass, notify, notifyAll, wait, wait, wait |
Constructor Detail |
public IndirectMap()
public IndirectMap(int initialCapacity)
initialCapacity
- the initial capacity of the hashtablepublic IndirectMap(int initialCapacity, float loadFactor)
initialCapacity
- the initial capacity of the hashtableloadFactor
- a number between 0.0 and 1.0java.lang.IllegalArgumentException
- if the initial capacity is less than or equal to zero, or if the load factor is less than or equal to zeropublic IndirectMap(java.util.Map m)
m
- a map containing the mappings to useMethod Detail |
public void clear()
clear
in interface java.util.Map
Hashtable.clear()
public java.lang.Object clone()
This will result in a database query if necessary.
public boolean contains(java.lang.Object value)
Hashtable.contains(java.lang.Object)
public boolean containsKey(java.lang.Object key)
containsKey
in interface java.util.Map
Hashtable.containsKey(java.lang.Object)
public boolean containsValue(java.lang.Object value)
containsValue
in interface java.util.Map
Hashtable.containsValue(java.lang.Object)
public java.util.Enumeration elements()
Hashtable.elements()
public java.util.Set entrySet()
entrySet
in interface java.util.Map
Hashtable.entrySet()
public boolean equals(java.lang.Object o)
equals
in interface java.util.Map
Hashtable.equals(java.lang.Object)
public java.lang.Object get(java.lang.Object key)
get
in interface java.util.Map
Hashtable.get(java.lang.Object)
public ValueHolderInterface getValueHolder()
getValueHolder
in interface IndirectContainer
public int hashCode()
hashCode
in interface java.util.Map
Hashtable.hashCode()
public boolean isEmpty()
isEmpty
in interface java.util.Map
Hashtable.isEmpty()
public boolean isInstantiated()
isInstantiated
in interface IndirectContainer
public java.util.Enumeration keys()
Hashtable.keys()
public java.util.Set keySet()
keySet
in interface java.util.Map
Hashtable.keySet()
public java.lang.Object put(java.lang.Object key, java.lang.Object value)
put
in interface java.util.Map
Hashtable.put(java.lang.Object, java.lang.Object)
public void putAll(java.util.Map t)
putAll
in interface java.util.Map
Hashtable.putAll(java.util.Map)
public java.lang.Object remove(java.lang.Object key)
remove
in interface java.util.Map
Hashtable.remove(java.lang.Object)
public void setValueHolder(ValueHolderInterface valueHolder)
setValueHolder
in interface IndirectContainer
public int size()
size
in interface java.util.Map
Hashtable.size()
public java.lang.String toString()
Hashtable.toString()
public java.util.Collection values()
values
in interface java.util.Map
Hashtable.values()
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