org.apache.ambari.server.collections

Class PredicateUtils

java.lang.Object

org.apache.ambari.server.collections.PredicateUtils

public class PredicateUtils
extends Object

PredicateUtils is a utility class providing methods to help perform tasks on Predicates.

Constructor Summary

Constructors

Constructor and Description
PredicateUtils()

Method Summary

Modifier and Type	Method and Description
static Predicate	fromJSON(String json) Builds a Predicate from a JSON-formatted String
static Predicate	fromMap(Map<?,?> map) Builds a Predicate from a Map
static String	toJSON(Predicate predicate) Safely serializes the specified Predicate to a JSON-formatted String
static Map<String,Object>	toMap(Predicate predicate) Safely serializes the specified Predicate to a Map

Methods inherited from class java.lang.Object

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

Constructor Detail

PredicateUtils

public PredicateUtils()

Method Detail

toMap

public static Map<String,Object> toMap(Predicate predicate)

Safely serializes the specified Predicate to a Map

Parameters:

predicate - the Predicate to process

Returns:

a Map or null of the supplied predicate is null

fromMap

public static Predicate fromMap(Map<?,?> map)

Builds a Predicate from a Map

Parameters:

map - a map containing the details of the predicate to create.

Returns:

a Predicate

toJSON

public static String toJSON(Predicate predicate)

Safely serializes the specified Predicate to a JSON-formatted String

Parameters:

predicate - the Predicate to process

Returns:

a String or null of the supplied predicate is null

fromJSON

public static Predicate fromJSON(String json)

Builds a Predicate from a JSON-formatted String

Parameters:

json - a string containing the details of the predicate to create.

Returns:

a Predicate

See Also:

fromMap(Map)