de.smartics.util.lang
Class ArgumentChecker

java.lang.Object
  de.smartics.util.lang.ArgumentChecker

All Implemented Interfaces:

Serializable

@NotThreadSafe
public final class ArgumentChecker
     
     

      
      extends 
      
      Object
     
     
     
     

      
      implements 
      
      Serializable
     
     

Collects exceptions. Especially useful for builders.

See Also:

Serialized Form

Constructor Summary

ArgumentChecker(String message)
Default constructor.

Method Summary

void	add(Throwable t) Adds a throwable.
void	check() Checks if an exception has been encountered.
void	notBlank(String name, String value) Checks if value is blank.
void	notBlankExceptNull(String name, String value) Checks if value is blank except null.
void	notNull(String name, Object value) Checks if value is null.

Methods inherited from class java.lang.Object

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

Constructor Detail

ArgumentChecker

public ArgumentChecker(String message)
                throws IllegalArgumentException

Default constructor.

Parameters:

message - the message to prepend to the message if throwables have been collected.

Throws:

IllegalArgumentException - if message is blank.

Method Detail

notNull

public void notNull(String name,
                    Object value)

Checks if value is null.

Parameters:

name - the name of the argument of error reporting. Not used if no exception is thrown. May be null, although not recommended.

value - the value of the argument to check to be not null.

notBlank

public void notBlank(String name,
                     String value)

Checks if value is blank.

Parameters:

name - the name of the argument of error reporting. Not used if no exception is thrown. May be null, although not recommended.

value - the value of the argument to check to be not blank.

notBlankExceptNull

public void notBlankExceptNull(String name,
                               String value)

Checks if value is blank except null.

Parameters:

name - the name of the argument of error reporting. Not used if no exception is thrown. May be null, although not recommended.

value - the value of the argument to check to be not blank but may be null.

add

public void add(Throwable t)

Adds a throwable.

Parameters:

t - the throwable to add.

check

public void check()
           throws IllegalArgumentException

Checks if an exception has been encountered.

Throws:

IllegalArgumentException - if at least on exception has been encountered.