com.microej.kf.util.property

Class SharedPropertyRegistryKF

java.lang.Object

ej.property.registry.SimplePropertyRegistry

com.microej.kf.util.property.SharedPropertyRegistryKF

All Implemented Interfaces:

FeatureStateListener, PropertyLoader, PropertyRegistry, SharedPropertyRegistry

public class SharedPropertyRegistryKF
extends SimplePropertyRegistry
implements SharedPropertyRegistry, FeatureStateListener

Implementation of shared property registry over Kernel and Features.

Constructor Summary

Constructors

Constructor and Description
SharedPropertyRegistryKF() Creates a new shared registry KF.

Method Summary

Modifier and Type	Method and Description
String	getProperty(String key) Searches for the property with the specified key in the property lists.
String	removeProperty(String key) Removes a property.
String	setProperty(String key, String value) Sets a property that maps a key to a value.
void	stateChanged(Feature feature, Feature.State previousState) Called when the state of a Feature has changed.

Methods inherited from class ej.property.registry.SimplePropertyRegistry

checkPropertyPermission, getProperty

Methods inherited from class java.lang.Object

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

Methods inherited from interface ej.property.PropertyLoader

getProperty

Constructor Detail

SharedPropertyRegistryKF

public SharedPropertyRegistryKF()

Creates a new shared registry KF.

Method Detail

getProperty

@Nullable
public String getProperty(String key)

Searches for the property with the specified key in the property lists. If the property is not found in any map of properties, then the method returns null. Different property maps of properties exist. The order in which they are searched in is:

1. Current application,
2. Kernel,
3. Trusted applications,
4. Other applications.

In the case a property value is set to null, then it is considered as non-existent in its map and the search goes on, possibly returning a shared-property sharing the same key.

Specified by:

getProperty in interface PropertyLoader

Overrides:

getProperty in class SimplePropertyRegistry

Parameters:

key - the property key.

Returns:

the value of the property list with the specified key value.

removeProperty

@Nullable
public String removeProperty(String key)

Description copied from interface: PropertyRegistry

Removes a property.

Specified by:

removeProperty in interface PropertyRegistry

Overrides:

removeProperty in class SimplePropertyRegistry

Parameters:

key - the key.

Returns:

the value of the property, or null if the property is not found.

setProperty

@Nullable
public String setProperty(String key,
                                    String value)

Description copied from interface: PropertyRegistry

Sets a property that maps a key to a value.

Specified by:

setProperty in interface PropertyRegistry

Overrides:

setProperty in class SimplePropertyRegistry

Parameters:

key - the key.

value - the value.

Returns:

the previous value of the property, or null if the property is not found.

stateChanged

public void stateChanged(@Nullable
                         Feature feature,
                         @Nullable
                         Feature.State previousState)

Description copied from interface: FeatureStateListener

Called when the state of a Feature has changed.

Specified by:

stateChanged in interface FeatureStateListener

Parameters:

feature - the Feature which state has changed

previousState - the previous state, null if Feature state is Feature.State.INSTALLED