io.modelcontextprotocol.util

Class Assert

java.lang.Object

io.modelcontextprotocol.util.Assert

public final class Assert
extends Object

Utility class providing assertion methods for parameter validation.

Constructor Summary

Constructors

Constructor and Description
Assert()

Method Summary

Modifier and Type	Method and Description
static boolean	hasText(String str) Check whether the given String contains actual text.
static void	hasText(String text, String message) Assert that the given String contains valid text content; that is, it must not be null and must contain at least one non-whitespace character.
static void	isTrue(boolean expression, String message) Assert a boolean expression, throwing an IllegalArgumentException if the expression evaluates to false.
static void	notEmpty(Collection<?> collection, String message) Assert that the collection is not null and not empty.
static void	notNull(Object object, String message) Assert that an object is not null.

Methods inherited from class java.lang.Object

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

Constructor Detail

Assert

public Assert()

Method Detail

notEmpty

public static void notEmpty(@Nullable
                            Collection<?> collection,
                            String message)

Assert that the collection is not null and not empty.

Parameters:

collection - the collection to check

message - the exception message to use if the assertion fails

Throws:

IllegalArgumentException - if the collection is null or empty

notNull

public static void notNull(@Nullable
                           Object object,
                           String message)

Assert that an object is not null.

 Assert.notNull(clazz, "The class must not be null");
 

Parameters:

object - the object to check

message - the exception message to use if the assertion fails

Throws:

IllegalArgumentException - if the object is null

hasText

public static void hasText(@Nullable
                           String text,
                           String message)

Assert that the given String contains valid text content; that is, it must not be null and must contain at least one non-whitespace character.

Assert.hasText(name, "'name' must not be empty");

Parameters:

text - the String to check

message - the exception message to use if the assertion fails

Throws:

IllegalArgumentException - if the text does not contain valid text content

hasText

public static boolean hasText(@Nullable
                              String str)

Check whether the given String contains actual text.

More specifically, this method returns true if the String is not null, its length is greater than 0, and it contains at least one non-whitespace character.

Parameters:

str - the String to check (may be null)

Returns:

true if the String is not null, its length is greater than 0, and it does not contain whitespace only

See Also:

Character.isWhitespace(char)

isTrue

public static void isTrue(boolean expression,
                          String message)

Assert a boolean expression, throwing an IllegalArgumentException if the expression evaluates to false.

Parameters:

expression - a boolean expression

message - the exception message to use if the assertion fails

Throws:

IllegalArgumentException - if expression is false