Package org.eclipse.core.runtime.preferences

Class OsgiPreferenceMetadataStore

java.lang.Object

org.eclipse.core.runtime.preferences.OsgiPreferenceMetadataStore

All Implemented Interfaces:

IPreferenceMetadataStore

public final class OsgiPreferenceMetadataStore
extends Object
implements IPreferenceMetadataStore

The preference store implementation that uses OSGi preference node as an enclosed storage.

Since:

3.8

See Also:

• IEclipsePreferences

Constructor Summary

Constructors

Constructor	Description
OsgiPreferenceMetadataStore(IEclipsePreferences preferences)

Method Summary

Modifier and Type	Method	Description
<V> boolean	handles(Class<V> valueType)	Checks if this value type can be handled by this preference store.
<V> V	load(PreferenceMetadata<V> preference)	Loads the value of specified preference from an enclosed storage.
<V> void	save(V value, PreferenceMetadata<V> preference)	Saves the value of specified preference to the enclosed storage.

Methods inherited from class java.lang.Object

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

Constructor Details

OsgiPreferenceMetadataStore

public OsgiPreferenceMetadataStore(IEclipsePreferences preferences)

Parameters:

preferences - the OSGi preference node, must not be null

Method Details

handles

public <V> boolean handles(Class<V> valueType)

Description copied from interface: IPreferenceMetadataStore

Checks if this value type can be handled by this preference store.

Specified by:

handles in interface IPreferenceMetadataStore

Type Parameters:

V - the value type for the preference

Parameters:

valueType - the value type to be checked

Returns:

true if this value type can be handled by this preference store and false otherwise

load

public <V> V load(PreferenceMetadata<V> preference)

Description copied from interface: IPreferenceMetadataStore

Loads the value of specified preference from an enclosed storage. If the value is not found returns the preference default value.

Specified by:

load in interface IPreferenceMetadataStore

Type Parameters:

V - the value type for the preference

Parameters:

preference - the preference metadata, must not be null.

Returns:

the preference value or default value if preference is unknown

See Also:

• IPreferenceMetadataStore.handles(Class)
• PreferenceMetadata

save

public <V> void save(V value,
 PreferenceMetadata<V> preference)

Description copied from interface: IPreferenceMetadataStore

Saves the value of specified preference to the enclosed storage.

Specified by:

save in interface IPreferenceMetadataStore

Type Parameters:

V - the value type for the preference

Parameters:

value - to be saved, must not be null.

preference - the preference metadata, must not be null.

See Also:

• IPreferenceMetadataStore.handles(Class)
• PreferenceMetadata