com.gooddata.util

Class Validate

java.lang.Object

com.gooddata.util.Validate

public abstract class Validate
extends Object

Argument validation helper methods used internally by GoodData SDK.

Constructor Summary

Constructors

Constructor and Description
Validate()

Method Summary

Modifier and Type	Method and Description
static void	isTrue(boolean expression, String message) throws new IllegalArgumentException if expression is false
static <T> T[]	noNullElements(T[] array, String argument)
static <T extends Collection> T	noNullElements(T collection, String argumentName) Throws IllegalArgumentException if the collection contains null elements (or is null), otherwise returns the collection.
static <T extends CharSequence> T	notEmpty(T value, String argumentName) Throws IllegalArgumentException if the char sequence is empty, otherwise returns the char sequence.
static <T extends Collection> T	notEmpty(T value, String argumentName) Throws IllegalArgumentException if the map is empty, otherwise returns the map.
static <T> T	notNull(T value, String argumentName) Throws IllegalArgumentException if the value is null, otherwise returns the value.
static <T> T	notNullState(T value, String argumentName) Throws IllegalStateException if the value is null, otherwise returns the value.

Methods inherited from class java.lang.Object

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

Constructor Detail

Validate

public Validate()

Method Detail

notNull

public static <T> T notNull(T value,
                            String argumentName)

Throws IllegalArgumentException if the value is null, otherwise returns the value.

Type Parameters:

T - the type of the argument

Parameters:

value - input value

argumentName - the name of input argument

Returns:

the value

notEmpty

public static <T extends CharSequence> T notEmpty(T value,
                                                  String argumentName)

Throws IllegalArgumentException if the char sequence is empty, otherwise returns the char sequence.

Type Parameters:

T - the type of char sequence

Parameters:

value - input char sequence

argumentName - the name of input argument

Returns:

the char sequence

notEmpty

public static <T extends Collection> T notEmpty(T value,
                                                String argumentName)

Throws IllegalArgumentException if the map is empty, otherwise returns the map.

Type Parameters:

T - the type of map

Parameters:

value - input collection

argumentName - the name of the input argument

Returns:

map

noNullElements

public static <T extends Collection> T noNullElements(T collection,
                                                      String argumentName)

Throws IllegalArgumentException if the collection contains null elements (or is null), otherwise returns the collection.

Type Parameters:

T - the type of the collection

Parameters:

collection - input collection

argumentName - the name of input argument

Returns:

the collection

noNullElements

public static <T> T[] noNullElements(T[] array,
                                     String argument)

notNullState

public static <T> T notNullState(T value,
                                 String argumentName)

Throws IllegalStateException if the value is null, otherwise returns the value.

Type Parameters:

T - the type of the argument

Parameters:

value - input value

argumentName - the name of input argument

Returns:

the value

isTrue

public static void isTrue(boolean expression,
                          String message)

throws new IllegalArgumentException if expression is false

Parameters:

expression - boolean expression

message - of exception