Package org.jivesoftware.openfire.user.property

Class HybridUserPropertyProvider

java.lang.Object

org.jivesoftware.openfire.user.property.HybridUserPropertyProvider

All Implemented Interfaces:

UserPropertyProvider

public class HybridUserPropertyProvider
extends Object
implements UserPropertyProvider

Delegate UserPropertyProvider operations among up to three configurable provider implementation classes. This implementation will not explicitly verify if a user exists, when operating on its properties. The methods of this implementation will not throw UserNotFoundException. This class related to, but is distinct from MappedUserPropertyProvider. The Hybrid variant of the provider iterates over providers, operating on the first applicable instance. The Mapped variant, however, maps each user to exactly one provider. To use this provider, use the following system property definition:

• provider.userproperty.className = org.jivesoftware.openfire.user.HybridUserPropertyProvider

Next, configure up to three providers, by setting these properties:

1. hybridUserPropertyProvider.primaryProvider.className = fully.qualified.ClassUserPropertyProvider
2. hybridUserPropertyProvider.secondaryProvider.className = fully.qualified.ClassUserPropertyProvider
3. hybridUserPropertyProvider.tertiaryProvider.className = fully.qualified.ClassUserPropertyProvider

Author:

Guus der Kinderen, guus.der.kinderen@gmail.com

Constructor Summary

Constructors

Constructor	Description
HybridUserPropertyProvider()

Method Summary

Modifier and Type	Method	Description
void	deleteProperty(String username, String propName)	Removes a property from all non-read-only providers.
void	insertProperty(String username, String propName, String propValue)	Adds a new property, updating a previous property value if one already exists.
boolean	isReadOnly()	Returns whether all backing providers are read-only.
Map<String,String>	loadProperties(String username)	Returns the properties from the first provider that returns a non-empty collection.
String	loadProperty(String username, String propName)	Returns a property from the first provider that returns a non-null value.
void	updateProperty(String username, String propName, String propValue)	Updates a property (or adds a new property when the property does not exist).

Methods inherited from class java.lang.Object

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

Constructor Details

HybridUserPropertyProvider

public HybridUserPropertyProvider()

Method Details

loadProperties

public Map<String,String> loadProperties(String username)

Returns the properties from the first provider that returns a non-empty collection. When none of the providers provide properties an empty collection is returned.

Specified by:

loadProperties in interface UserPropertyProvider

Parameters:

username - The identifier of the user (cannot be null or empty).

Returns:

A collection, possibly empty, never null.

loadProperty

public String loadProperty(String username,
 String propName)

Returns a property from the first provider that returns a non-null value. This method will return null when the desired property was not defined in any provider.

Specified by:

loadProperty in interface UserPropertyProvider

Parameters:

username - The identifier of the user (cannot be null or empty).

propName - The property name (cannot be null or empty).

Returns:

The property value (possibly null).

insertProperty

public void insertProperty(String username,
 String propName,
 String propValue)
                    throws UnsupportedOperationException

Adds a new property, updating a previous property value if one already exists. Note that the implementation of this method is equal to that of updateProperty(String, String, String). First, tries to find a provider that has the property for the provided user. If that provider is read-only, an UnsupportedOperationException is thrown. If the provider is not read-only, the existing property value will be updated. When the property is not defined in any provider, it will be added in the first non-read-only provider. When all providers are read-only, an UnsupportedOperationException is thrown.

Specified by:

insertProperty in interface UserPropertyProvider

Parameters:

username - The identifier of the user (cannot be null or empty).

propName - The property name (cannot be null or empty).

propValue - The property value (cannot be null).

Throws:

UnsupportedOperationException - if the property cannot be added

updateProperty

public void updateProperty(String username,
 String propName,
 String propValue)
                    throws UnsupportedOperationException

Updates a property (or adds a new property when the property does not exist). Note that the implementation of this method is equal to that of insertProperty(String, String, String). First, tries to find a provider that has the property for the provided user. If that provider is read-only, an UnsupportedOperationException is thrown. If the provider is not read-only, the existing property value will be updated. When the property is not defined in any provider, it will be added in the first non-read-only provider. When all providers are read-only, an UnsupportedOperationException is thrown.

Specified by:

updateProperty in interface UserPropertyProvider

Parameters:

username - The identifier of the user (cannot be null or empty).

propName - The property name (cannot be null or empty).

propValue - The property value (cannot be null).

Throws:

UnsupportedOperationException - if the property cannot be updated

deleteProperty

public void deleteProperty(String username,
 String propName)
                    throws UnsupportedOperationException

Removes a property from all non-read-only providers.

Specified by:

deleteProperty in interface UserPropertyProvider

Parameters:

username - The identifier of the user (cannot be null or empty).

propName - The property name (cannot be null or empty).

Throws:

UnsupportedOperationException - if the property cannot be deleted

isReadOnly

public boolean isReadOnly()

Returns whether all backing providers are read-only. When read-only, properties can not be created, deleted, or modified. If at least one provider is not read-only, this method returns false.

Specified by:

isReadOnly in interface UserPropertyProvider

Returns:

true when all backing providers are read-only, otherwise false.