Package org.apache.flink.util

Interface Summary

Interface	Description
Collector<T>	Collects a record and forwards it.
IterableIterator<E>	An Iterator that is also Iterable (often by returning itself).
MutableObjectIterator<E>	A simple iterator interface.
NetUtils.SocketFactory
Visitable<T extends Visitable<T>>	This interface marks types as visitable during a traversal.
Visitor<T extends Visitable<T>>	A visitor encapsulates functionality that is applied to each node in the process of a traversal of a tree or DAD.

Class Summary

Class	Description
AbstractID	A statistically unique identification number.
ExceptionUtils
FileUtils	This is a utility class to deal with temporary files.
InstantiationUtil	Utility class to create instances from class objects and checking failure reasons.
InstantiationUtil.ClassLoaderObjectInputStream	A custom ObjectInputStream that can also load user-code using a user-code ClassLoader.
IOUtils	An utility class for I/O related functionality.
LongValueSequenceIterator	The LongValueSequenceIterator is an iterator that returns a sequence of numbers (as LongValue)s.
MathUtils	Collection of simple mathematical routines.
MavenForkNumberPrefixLayout	The logging layout used to prefix each log event with the Maven fork number.
NetUtils
NumberSequenceIterator	The NumberSequenceIterator is an iterator that returns a sequence of numbers (as Long)s.
Preconditions	A collection of static utility methods to validate input.
PropertiesUtil	Simple utilities for getting typed values from Properties.
ReflectionUtil
SerializedValue<T>	This class is used to transfer (via serialization) objects whose classes are not available in the system class loader.
SimpleStringUtils	Utility class for efficient string operations on strings.
SimpleStringUtils.WhitespaceTokenizer	A tokenizer for string values that uses whitespace characters as token delimiters.
SplittableIterator<T>	Abstract base class for iterators that can split themselves into multiple disjoint iterators.
StringUtils	Utility class to convert objects into strings in vice-versa.
UnionIterator<T>
XORShiftRandom	Implement a random number generator based on the XORShift algorithm discovered by George Marsaglia.

Enum Summary

Enum	Description
OperatingSystem	An enumeration indicating the operating system that the JVM runs on.

Exception Summary

Exception	Description
TraversableOnceException	An exception, indicating that an Iterable can only be traversed once, but has been attempted to traverse an additional time.