com.erudika.para.utils

Class RegistryUtils

java.lang.Object

com.erudika.para.utils.RegistryUtils

public final class RegistryUtils
extends Object

A utility for creating, reading, and updating registries. The Registry allows for efficient sharing of information between multiple nodes of a Para cluster. Registry objects are saved in the DAO resource for the root application.

Author:

Jeremy Wiesner [jswiesner@gmail.com]

Method Summary

Modifier and Type	Method and Description
static Map<String,Object>	getRegistry(String registryName) Retrieve an entire registry.
static Object	getValue(String registryName, String key) Retrieve one specific value from a registry.
static void	putValue(String registryName, String key, Object value) Add a specific value to a registry.
static void	removeValue(String registryName, String key) Remove a specific value from a registry.

Methods inherited from class java.lang.Object

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

Method Detail

putValue

public static void putValue(String registryName,
                            String key,
                            Object value)

Add a specific value to a registry. If the registry doesn't exist yet, create it.

Parameters:

registryName - the name of the registry.

key - the unique key corresponding to the value to insert (typically an appid).

value - the value to add to the registry.

getValue

public static Object getValue(String registryName,
                              String key)

Retrieve one specific value from a registry.

Parameters:

registryName - the name of the registry.

key - the unique key corresponding to the value to retrieve (typically an appid).

Returns:

the value corresponding to the registry key, null if no value is found for the specified key.

removeValue

public static void removeValue(String registryName,
                               String key)

Remove a specific value from a registry.

Parameters:

registryName - the name of the registry.

key - the unique key corresponding to the value to remove (typically an appid).

getRegistry

public static Map<String,Object> getRegistry(String registryName)

Retrieve an entire registry.

Parameters:

registryName - the name of the registry.

Returns:

the map of all registry values, null if no registry is found by the specified name.