in.ankushs.dbip.utils

Class PreConditions

java.lang.Object

in.ankushs.dbip.utils.PreConditions

public final class PreConditions
extends java.lang.Object

Contains some run of the mill static methods for pre-conditions validations.

Method Summary

Modifier and Type	Method and Description
static void	checkEmptyString(java.lang.String str, java.lang.String errorMsg) Ensures the string passed to the method is not empty .
static void	checkExpression(boolean expression, java.lang.String errorMsg) Ensures the truth of the expression passed.
static <T> void	checkNull(T t, java.lang.String errorMsg) Ensures the object passed to the method is not null

Methods inherited from class java.lang.Object

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

Method Detail

checkNull

public static <T> void checkNull(T t,
                                 java.lang.String errorMsg)

Ensures the object passed to the method is not null

Parameters:

t - The object against which the validation will be performed

errorMsg - The message to throw in case t turns out to be null.

Throws:

java.lang.IllegalArgumentException - if t is null

checkEmptyString

public static void checkEmptyString(java.lang.String str,
                                    java.lang.String errorMsg)

Ensures the string passed to the method is not empty . The string will be considered empty if it is null or has no text after being trimmed.

Parameters:

str - The string against which the validation will be performed

errorMsg - The message to throw in case str turns out to have no text.

Throws:

java.lang.IllegalArgumentException - if str has no text

checkExpression

public static void checkExpression(boolean expression,
                                   java.lang.String errorMsg)

Ensures the truth of the expression passed.

Parameters:

expression - The expression being evaluated

errorMsg - The message to throw in case expression turns out to be false.

Throws:

java.lang.IllegalArgumentException - if expression is expression