de.alpharogroup.collections.modifications

Enum ModifiedState

java.lang.Object

java.lang.Enum<ModifiedState>

de.alpharogroup.collections.modifications.ModifiedState

All Implemented Interfaces:

Serializable, Comparable<ModifiedState>

public enum ModifiedState
extends Enum<ModifiedState>

The Enum ModifiedState represents states if a collection have been modified. Checks the same( or different) collection in different states. If a reference of a collection in the past is same or modified with the reference of the collection now.

Enum Constant Summary

Enum Constants

Enum Constant and Description
CLEARED The cleared state.
FIRST_MATCH The first match state.
NEW_MATCH The new match state.
REMOVED The removed state.
UNMODIFIED The unmodified state.

Method Summary

Modifier and Type	Method and Description
static <T> ModifiedState	isModified(Collection<T> previous, Collection<T> next) Checks if the given previous(for instance in the past) Collection is modified comparing the next(for instance now) Collection.
static ModifiedState	valueOf(String name) Returns the enum constant of this type with the specified name.
static ModifiedState[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

CLEARED

public static final ModifiedState CLEARED

The cleared state. This indicates that no entry exists anymore in the collection.

FIRST_MATCH

public static final ModifiedState FIRST_MATCH

The first match state. This indicates that there is a total new match. Precondition is that no entries exists in the collection.

NEW_MATCH

public static final ModifiedState NEW_MATCH

The new match state. This indicates that an new entry is added. Precondition is that entries exists in the collection.

REMOVED

public static final ModifiedState REMOVED

The removed state. This indicates that an entry has been removed. Precondition is that minimun an entry exists in the collection.

UNMODIFIED

public static final ModifiedState UNMODIFIED

The unmodified state. This indicates that no entry added or removed from the collection.

Method Detail

values

public static ModifiedState[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (ModifiedState c : ModifiedState.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static ModifiedState valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

isModified

public static <T> ModifiedState isModified(Collection<T> previous,
                                           Collection<T> next)

Checks if the given previous(for instance in the past) Collection is modified comparing the next(for instance now) Collection.

Type Parameters:

T - the type.

Parameters:

previous - the previous collection.

next - the next collection.

Returns:

the modified