com.triactive.jdo.store
Interface PersistentMap

All Superinterfaces:

java.util.Map

public interface PersistentMap

extends java.util.Map

A map which is directly backed by the data store.

All operations on the map result in corresponding requests to the data store.

Author:

Mike Martin

Nested Class Summary

Nested classes inherited from class java.util.Map

java.util.Map.Entry

Method Summary

boolean	allowsNullValues() Indicates whether or not this map allows null values.
boolean	containsEntry(java.util.Map.Entry entry) Indicates whether or not this map contains the given entry.
java.lang.Class	getKeyType() Returns the type of keys in this map.
java.lang.Class	getValueType() Returns the type of values in this map.
boolean	removeEntry(java.util.Map.Entry entry) Removes the given entry from the map if it exists.

Methods inherited from interface java.util.Map

clear, containsKey, containsValue, entrySet, equals, get, hashCode, isEmpty, keySet, put, putAll, remove, size, values

Method Detail

getKeyType

public java.lang.Class getKeyType()

Returns the type of keys in this map.

Returns:

The type of keys in this map.

getValueType

public java.lang.Class getValueType()

Returns the type of values in this map.

Returns:

The type of values in this map.

allowsNullValues

public boolean allowsNullValues()

Indicates whether or not this map allows null values.

Returns:

true if null values are allowed, false otherwise.

containsEntry

public boolean containsEntry(java.util.Map.Entry entry)

Indicates whether or not this map contains the given entry.

Parameters:

entry - The entry to find.

Returns:

true if and only if the map contains an entry whose key and value both match the given entry.

removeEntry

public boolean removeEntry(java.util.Map.Entry entry)

Removes the given entry from the map if it exists.

Parameters:

entry - The entry to remove. Removal occurs if and only if the map contains an entry whose key and value both match the given entry.

Returns:

true if the map was modified, false otherwise.