com.sdl.delivery.configuration.utils

Class ConditionUtil

java.lang.Object

com.sdl.delivery.configuration.utils.ConditionUtil

public class ConditionUtil
extends Object

Helper class - the alternative of Preconditions.

Constructor Summary

Constructors

Constructor and Description
ConditionUtil()

Method Summary

Modifier and Type	Method and Description
static void	checkArgument(boolean expression) Ensures the truth of an expression involving one or more parameters to the calling method.
static void	checkArgument(boolean expression, Object errorMessage) Ensures the truth of an expression involving one or more parameters to the calling method.
static <T> T	checkNotNull(T reference) Ensures that an object reference passed as a parameter to the calling method is not null.
static <T> T	checkNotNull(T reference, Object errorMessage) Deprecated. use Objects.requireNonNull instead
static boolean	isNullOrEmpty(String string) Returns true if the given string is null or is the empty string.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConditionUtil

public ConditionUtil()

Method Detail

checkNotNull

public static <T> T checkNotNull(T reference)

Ensures that an object reference passed as a parameter to the calling method is not null.

Parameters:

reference - an object reference

Returns:

the non-null reference that was validated

Throws:

NullPointerException - if reference is null

checkArgument

public static void checkArgument(boolean expression)

Ensures the truth of an expression involving one or more parameters to the calling method.

Parameters:

expression - a boolean expression

Throws:

IllegalArgumentException - if expression is false

checkArgument

public static void checkArgument(boolean expression,
                                 Object errorMessage)

Ensures the truth of an expression involving one or more parameters to the calling method.

Parameters:

expression - a boolean expression

errorMessage - the exception message to use if the check fails; will be converted to a string using String.valueOf(Object)

Throws:

IllegalArgumentException - if expression is false

checkNotNull

@Deprecated
public static <T> T checkNotNull(T reference,
                                              Object errorMessage)

Deprecated. use Objects.requireNonNull instead

Ensures that an object reference passed as a parameter to the calling method is not null.

Parameters:

reference - an object reference

errorMessage - the exception message to use if the check fails; will be converted to a string using String.valueOf(Object)

Returns:

the non-null reference that was validated

Throws:

NullPointerException - if reference is null

isNullOrEmpty

public static boolean isNullOrEmpty(String string)

Returns true if the given string is null or is the empty string.

Parameters:

string - a string reference to check

Returns:

true if the string is null or is the empty string