Class CollectionUtil

java.lang.Object

org.flowable.common.engine.impl.util.CollectionUtil

public class CollectionUtil
extends Object

helper/convenience methods for working with collections.

Author:

Joram Barrez

Method Summary

Modifier and Type	Method	Description
static <T> void	consumePartitions(Collection<T> values, int partitionSize, Consumer<List<T>> partitionConsumer)
static boolean	isEmpty(Collection collection)
static boolean	isNotEmpty(Collection collection)
static Map<String,Object>	map(Object... objects)	Helper method to easily create a map.
static <T> List<List<T>>	partition(Collection<T> values, int partitionSize)
static Map<String,Object>	singletonMap(String key, Object value)	Helper method that creates a singleton map.

Methods inherited from class Object

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

Method Details

singletonMap

public static Map<String,Object> singletonMap(String key,
 Object value)

Helper method that creates a singleton map. Alternative for Collections.singletonMap(), since that method returns a generic typed map depending on the input type, but we often need a String, Object map.

map

public static Map<String,Object> map(Object... objects)

Helper method to easily create a map. Takes as input a varargs containing the key1, value1, key2, value2, etc. Note: although an Object, we will cast the key to String internally.

isEmpty

public static boolean isEmpty(Collection collection)

isNotEmpty

public static boolean isNotEmpty(Collection collection)

partition

public static <T> List<List<T>> partition(Collection<T> values,
 int partitionSize)

consumePartitions

public static <T> void consumePartitions(Collection<T> values,
 int partitionSize,
 Consumer<List<T>> partitionConsumer)