org.apache.gobblin.util

Class DecoratorUtils

java.lang.Object

org.apache.gobblin.util.DecoratorUtils

public class DecoratorUtils
extends Object

Utilities for classes implementing the decorator interface.

Constructor Summary

Constructors

Constructor and Description
DecoratorUtils()

Method Summary

Modifier and Type	Method and Description
static List<Object>	getDecoratorLineage(Object obj) Finds the decorator lineage of the given object.
static Object	resolveUnderlyingObject(Object obj) Resolves the truly underlying object in a possible chain of Decorator.

Methods inherited from class java.lang.Object

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

Constructor Detail

DecoratorUtils

public DecoratorUtils()

Method Detail

resolveUnderlyingObject

public static Object resolveUnderlyingObject(Object obj)

Resolves the truly underlying object in a possible chain of Decorator.

Parameters:

obj - object to resolve.

Returns:

the true non-decorator underlying object.

getDecoratorLineage

public static List<Object> getDecoratorLineage(Object obj)

Finds the decorator lineage of the given object.

If object is not a Decorator, this method will return a singleton list with just the object. If object is a Decorator, it will return a list of the underlying object followed by the decorator lineage up to the input decorator object.

Parameters:

obj - an object.

Returns:

List of the non-decorator underlying object and all decorators on top of it, starting with underlying object and ending with the input object itself (inclusive).