Package org.springframework.data.map

Class MapKeyValueAdapter

java.lang.Object

org.springframework.data.keyvalue.core.AbstractKeyValueAdapter

org.springframework.data.map.MapKeyValueAdapter

All Implemented Interfaces:

DisposableBean, KeyValueAdapter

public class MapKeyValueAdapter
extends AbstractKeyValueAdapter

KeyValueAdapter implementation for Map.

Author:

Christoph Strobl, Derek Cochran, Marcel Overdijk

Constructor Summary

Constructors

Constructor	Description
MapKeyValueAdapter()	Create new MapKeyValueAdapter using ConcurrentHashMap as backing store type.
MapKeyValueAdapter(Class<? extends Map> mapType)	Creates a new MapKeyValueAdapter using the given Map as backing store.
MapKeyValueAdapter(Class<? extends Map> mapType, QueryEngine<? extends KeyValueAdapter,?,?> engine)	Creates a new MapKeyValueAdapter using the given Map as backing store and query engine.
MapKeyValueAdapter(Map<String,Map<Object,Object>> store)	Create new instance of MapKeyValueAdapter using given dataStore for persistence.
MapKeyValueAdapter(Map<String,Map<Object,Object>> store, QueryEngine<? extends KeyValueAdapter,?,?> engine)	Create new instance of MapKeyValueAdapter using given dataStore for persistence and query engine.
MapKeyValueAdapter(QueryEngine<? extends KeyValueAdapter,?,?> engine)	Create new MapKeyValueAdapter using the given query engine.

Method Summary

Modifier and Type	Method	Description
void	clear()	Removes all objects.
boolean	contains(Object id, String keyspace)	Check if a object with given id exists in keyspace.
long	count(String keyspace)	Count number of objects within keyspace.
Object	delete(Object id, String keyspace)	Delete and return the object with given type and id.
void	deleteAllOf(String keyspace)	Remove all objects of given type.
void	destroy()
CloseableIterator<Map.Entry<Object,Object>>	entries(String keyspace)	Returns a CloseableIterator that iterates over all entries.
Object	get(Object id, String keyspace)	Get the object with given id from keyspace.
Collection<?>	getAllOf(String keyspace)	Get all elements for given keyspace.
protected Map<Object,Object>	getKeySpaceMap(String keyspace)	Get map associated with given key space.
Object	put(Object id, Object item, String keyspace)	Add object with given id to keyspace.

Methods inherited from class org.springframework.data.keyvalue.core.AbstractKeyValueAdapter

count, delete, find, find, get, getQueryEngine

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.springframework.data.keyvalue.core.KeyValueAdapter

entries, exists, getAllOf

Constructor Details

MapKeyValueAdapter

public MapKeyValueAdapter()

Create new MapKeyValueAdapter using ConcurrentHashMap as backing store type.

MapKeyValueAdapter

public MapKeyValueAdapter(QueryEngine<? extends KeyValueAdapter,?,?> engine)

Create new MapKeyValueAdapter using the given query engine.

Parameters:

engine - the query engine.

Since:

2.4

MapKeyValueAdapter

public MapKeyValueAdapter(Class<? extends Map> mapType)

Creates a new MapKeyValueAdapter using the given Map as backing store.

Parameters:

mapType - must not be null.

MapKeyValueAdapter

public MapKeyValueAdapter(Class<? extends Map> mapType,
 QueryEngine<? extends KeyValueAdapter,?,?> engine)

Creates a new MapKeyValueAdapter using the given Map as backing store and query engine.

Parameters:

mapType - must not be null.

engine - the query engine.

Since:

2.4

MapKeyValueAdapter

public MapKeyValueAdapter(Map<String,Map<Object,Object>> store)

Create new instance of MapKeyValueAdapter using given dataStore for persistence.

Parameters:

store - must not be null.

MapKeyValueAdapter

public MapKeyValueAdapter(Map<String,Map<Object,Object>> store,
 QueryEngine<? extends KeyValueAdapter,?,?> engine)

Create new instance of MapKeyValueAdapter using given dataStore for persistence and query engine.

Parameters:

store - must not be null.

engine - the query engine.

Since:

2.4

Method Details

put

public Object put(Object id,
 Object item,
 String keyspace)

Description copied from interface: KeyValueAdapter

Add object with given id to keyspace.

Parameters:

id - must not be null.

keyspace - must not be null.

Returns:

the item previously associated with the id.

contains

public boolean contains(Object id,
 String keyspace)

Description copied from interface: KeyValueAdapter

Check if a object with given id exists in keyspace.

Parameters:

id - must not be null.

keyspace - must not be null.

Returns:

true if item of type with id exists.

count

public long count(String keyspace)

Description copied from interface: KeyValueAdapter

Count number of objects within keyspace.

Parameters:

keyspace - must not be null.

Returns:

get

public Object get(Object id,
 String keyspace)

Description copied from interface: KeyValueAdapter

Get the object with given id from keyspace.

Parameters:

id - must not be null.

keyspace - must not be null.

Returns:

null in case no matching item exists.

delete

public Object delete(Object id,
 String keyspace)

Description copied from interface: KeyValueAdapter

Delete and return the object with given type and id.

Parameters:

id - must not be null.

keyspace - must not be null.

Returns:

null if object could not be found

getAllOf

public Collection<?> getAllOf(String keyspace)

Description copied from interface: KeyValueAdapter

Get all elements for given keyspace.

Parameters:

keyspace - must not be null.

Returns:

empty Collection if nothing found.

entries

public CloseableIterator<Map.Entry<Object,Object>> entries(String keyspace)

Description copied from interface: KeyValueAdapter

Returns a CloseableIterator that iterates over all entries.

Parameters:

keyspace - must not be null.

Returns:

deleteAllOf

public void deleteAllOf(String keyspace)

Description copied from interface: KeyValueAdapter

Remove all objects of given type.

Parameters:

keyspace - must not be null.

clear

public void clear()

Description copied from interface: KeyValueAdapter

Removes all objects.

destroy

public void destroy()
             throws Exception

Throws:

Exception

getKeySpaceMap

protected Map<Object,Object> getKeySpaceMap(String keyspace)

Get map associated with given key space.

Parameters:

keyspace - must not be null.

Returns: