org.fryske_akademy

Class Util

java.lang.Object

org.fryske_akademy.Util

public class Util
extends Object

Author:

eduard

Constructor Summary

Constructors

Constructor and Description
Util()

Method Summary

Modifier and Type	Method and Description
static boolean	bothNullOrEmpty(String s, String t)
static Throwable	deepestCause(Throwable t) you can set log level to fine to see the original stacktrace in the log.
static Enum	findInClass(Class clazz, String e) Look for methods with return type enum, whose simple class is the first part of the argument string, look for the enum constant whose name is the last part of the argument string.
static List<String>	formatConstraintException(javax.validation.ConstraintViolationException cve)
static <T> T	getBean(Class<T> clazz, Annotation... qualifiers) find a bean programmatically in CDI provider, can be used if you need one in an unmanaged situation.
static Enum	getEnumWithValue(Object objectWithEnums) look for a method returning an enum, call it, if the value isn't null return it.
static boolean	hasSetterForEnumString(String t, Object objectWithEnums) look for a setter ignoring case for a string in the form "enum simple class"."enum name", return true if it is found.
static List<Enum>	listEnums(Class clazz) look for all methods whose return type is an enum and add all constants to the result.
static boolean	nullOrEmpty(String s)
static <T> T	setEnum(Enum e, T objectWithEnums) Look for a setter for the enum in the object, call it and return the object.
static <T> T	setEnumsFromString(String inputString, T objectWithEnums) parse a string containing enums the form "enum simple class"."enum name" separated by space, look for the right setter in the Object class and call the setter.
static String	split(String toSplit, int index) Calls split(java.lang.String, int, boolean) with false.
static String	split(String toSplit, int index, boolean ignorePatternAfterIndex) Call split(java.lang.String, java.lang.String, int, boolean) with ": ?" as regex.
static String	split(String toSplit, String regex, int index, boolean ignorePatternAfterIndex) split a string on regex and return the requested index, or null.
static String	toString(Enum e) return "enum simple class"."enum name"
static String	toString(List<Enum> l) return "[" + toString(java.lang.Enum) for each enum + "]"

Methods inherited from class java.lang.Object

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

Constructor Detail

Util

public Util()

Method Detail

setEnumsFromString

public static <T> T setEnumsFromString(String inputString,
                                       T objectWithEnums)

parse a string containing enums the form "enum simple class"."enum name" separated by space, look for the right setter in the Object class and call the setter. Case is ignored.

Parameters:

inputString - space separated inputStrng, containing "enum simple class"."enum name"

objectWithEnums -

Throws:

IllegalArgumentException - when no setter has been called for an enum string

hasSetterForEnumString

public static boolean hasSetterForEnumString(String t,
                                             Object objectWithEnums)

look for a setter ignoring case for a string in the form "enum simple class"."enum name", return true if it is found.

Parameters:

t -

objectWithEnums -

Returns:

setEnum

public static <T> T setEnum(Enum e,
                            T objectWithEnums)

Look for a setter for the enum in the object, call it and return the object.

Type Parameters:

T -

Parameters:

e -

objectWithEnums -

Returns:

Throws:

IllegalArgumentException - when no setter has been called for the enum

getEnumWithValue

public static Enum getEnumWithValue(Object objectWithEnums)

look for a method returning an enum, call it, if the value isn't null return it.

Parameters:

objectWithEnums -

Returns:

listEnums

public static List<Enum> listEnums(Class clazz)

look for all methods whose return type is an enum and add all constants to the result.

Parameters:

clazz -

Returns:

findInClass

public static Enum findInClass(Class clazz,
                               String e)

Look for methods with return type enum, whose simple class is the first part of the argument string, look for the enum constant whose name is the last part of the argument string. Case is ignored.

Parameters:

clazz -

e - string in the form "enum simple class"."enum name"

Returns:

toString

public static String toString(Enum e)

return "enum simple class"."enum name"

Parameters:

e -

Returns:

toString

public static String toString(List<Enum> l)

return "[" + toString(java.lang.Enum) for each enum + "]"

Parameters:

l -

Returns:

split

public static String split(String toSplit,
                           int index)

Calls split(java.lang.String, int, boolean) with false.

Parameters:

toSplit -

index -

Returns:

split

public static String split(String toSplit,
                           int index,
                           boolean ignorePatternAfterIndex)

Call split(java.lang.String, java.lang.String, int, boolean) with ": ?" as regex.

Parameters:

toSplit -

index -

ignorePatternAfterIndex -

Returns:

split

public static String split(String toSplit,
                           String regex,
                           int index,
                           boolean ignorePatternAfterIndex)

split a string on regex and return the requested index, or null. Can be used to find an entity using a readable user representation of an entity such as "netherlands: franeker", or "netherlands: franeker: center".

Parameters:

toSplit -

index -

ignorePatternAfterIndex - when true, occurring patterns after index will be ignored, so the return value will be the rest of the input string.

Returns:

deepestCause

public static Throwable deepestCause(Throwable t)

you can set log level to fine to see the original stacktrace in the log.

Parameters:

t -

Returns:

getBean

public static <T> T getBean(Class<T> clazz,
                            Annotation... qualifiers)

find a bean programmatically in CDI provider, can be used if you need one in an unmanaged situation.

Type Parameters:

T -

Parameters:

clazz -

qualifiers - if needed extend AnnotationLiteral implementing your qualifier and instantiate that.

Returns:

formatConstraintException

public static List<String> formatConstraintException(javax.validation.ConstraintViolationException cve)

nullOrEmpty

public static boolean nullOrEmpty(String s)

bothNullOrEmpty

public static boolean bothNullOrEmpty(String s,
                                      String t)