com.holonplatform.core.internal

Class ContextResourceMap

java.lang.Object

com.holonplatform.core.internal.ContextResourceMap

All Implemented Interfaces:

Serializable

public final class ContextResourceMap
extends Object
implements Serializable

Helper class to manage Context resources by key.

Since:

5.0.0

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ContextResourceMap(String scopeName, boolean threadSafe) Construct a ContextResourceMap with default initial capacity
ContextResourceMap(String scopeName, boolean threadSafe, int initialCapacity) Construct a ContextResourceMap

Method Summary

Modifier and Type	Method and Description
void	clear() Clears all resource bindings
<T> T	get(String key, Class<T> type) Get a value of given type identified by given key.
<T> T	put(String key, T value) Bind the given resource key with the specified value
<T> T	putIfAbsent(String key, T value) Bind the given resource key with the specified value, if not already bound
boolean	remove(String key) Removes the resource instance bound to given key

Methods inherited from class java.lang.Object

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

Constructor Detail

ContextResourceMap

public ContextResourceMap(String scopeName,
                          boolean threadSafe)

Construct a ContextResourceMap with default initial capacity

Parameters:

scopeName - Scope name

threadSafe - true to build a thread-safe resource map

ContextResourceMap

public ContextResourceMap(String scopeName,
                          boolean threadSafe,
                          int initialCapacity)

Construct a ContextResourceMap

Parameters:

scopeName - Scope name

threadSafe - true to build a thread-safe resource map

initialCapacity - Initial capacity

Method Detail

get

public <T> T get(String key,
                 Class<T> type)
          throws TypeMismatchException

Get a value of given type identified by given key.

Type Parameters:

T - Resource type

Parameters:

key - Resource key

type - Resource type

Returns:

Resource value, or null if not found

Throws:

TypeMismatchException - Expected and actual resource type mismatch

put

public <T> T put(String key,
                 T value)

Bind the given resource key with the specified value

Type Parameters:

T - Resource type

Parameters:

key - Resource key (not null)

value - Resource instance. If null, the mapping will be removed

Returns:

Previous bound instance, if any

putIfAbsent

public <T> T putIfAbsent(String key,
                         T value)

Bind the given resource key with the specified value, if not already bound

Type Parameters:

T - Resource type

Parameters:

key - Resource key (not null)

value - Resource instance

Returns:

Previous value, or null if no value was bound and the new instance it's been mapped to the key

remove

public boolean remove(String key)

Removes the resource instance bound to given key

Parameters:

key - Resource key (not null)

Returns:

true if found and removed

clear

public void clear()

Clears all resource bindings