org.apache.tapestry5.ioc.internal.util

Class InternalCommonsUtils

java.lang.Object

org.apache.tapestry5.ioc.internal.util.InternalCommonsUtils

public class InternalCommonsUtils
extends Object

Utility methods class for the Commons package.

Field Summary

Fields

Modifier and Type	Field and Description
static AnnotationProvider	NULL_ANNOTATION_PROVIDER

Constructor Summary

Constructors

Constructor and Description
InternalCommonsUtils()

Method Summary

Modifier and Type	Method and Description
static <K,V> void	addToMapList(Map<K,List<V>> map, K key, V value) Adds a value to a specially organized map where the values are lists of objects.
static String	asString(Method method) Converts a method to a user presentable string consisting of the containing class name, the method name, and the short form of the parameter list (the class name of each parameter type, shorn of the package name portion).
static String	capitalize(String input) Capitalizes a string, converting the first character to uppercase.
static boolean	containsSymbols(String input) Return true if the input string contains the marker for symbols that must be expanded.
static String	defaultLabel(String id, Messages messages, String propertyExpression) Looks for a label within the messages based on the id.
static String	extractIdFromPropertyExpression(String expression) Used to convert a property expression into a key that can be used to locate various resources (Blocks, messages, etc.).
static boolean	isBlank(String input) Returns true if the input is null, or is a zero length string (excluding leading/trailing whitespace).
static boolean	isNonBlank(String input)
static String	join(List elements) Joins together some number of elements to form a comma separated list.
static String	join(List elements, String separator) Joins together some number of elements.
static String	joinSorted(Collection elements) Creates a sorted copy of the provided elements, then turns that into a comma separated list.
static String	lastTerm(String input) Searches the string for the final period ('.') character and returns everything after that.
static Location	locationOf(Object location) Sniffs the object to see if it is a Location or Locatable.
static String	replace(String input, Pattern pattern, String replacement)
static List<String>	sortedKeys(Map map) Extracts the string keys from a map and returns them in sorted order.
static String	stripMemberName(String memberName) Strips leading "_" and "$" and trailing "_" from the name.
static AnnotationProvider	toAnnotationProvider(Class element)
static AnnotationProvider	toAnnotationProvider(Method element)
static String	toUserPresentable(String id) Capitalizes the string, and inserts a space before each upper case character (or sequence of upper case characters).

Methods inherited from class java.lang.Object

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

Field Detail

NULL_ANNOTATION_PROVIDER

public static final AnnotationProvider NULL_ANNOTATION_PROVIDER

Since:

5.3

Constructor Detail

InternalCommonsUtils

public InternalCommonsUtils()

Method Detail

addToMapList

public static <K,V> void addToMapList(Map<K,List<V>> map,
                                      K key,
                                      V value)

Adds a value to a specially organized map where the values are lists of objects. This somewhat simulates a map that allows multiple values for the same key.

Type Parameters:

K - the type of key

V - the type of the list

Parameters:

map - to store value into

key - for which a value is added

value - to add

locationOf

public static Location locationOf(Object location)

Sniffs the object to see if it is a Location or Locatable. Returns null if null or not convertable to a location.

toAnnotationProvider

public static AnnotationProvider toAnnotationProvider(Method element)

extractIdFromPropertyExpression

public static String extractIdFromPropertyExpression(String expression)

Used to convert a property expression into a key that can be used to locate various resources (Blocks, messages, etc.). Strips out any punctuation characters, leaving just words characters (letters, number and the underscore).

Parameters:

expression - a property expression

Returns:

the expression with punctuation removed

replace

public static String replace(String input,
                             Pattern pattern,
                             String replacement)

defaultLabel

public static String defaultLabel(String id,
                                  Messages messages,
                                  String propertyExpression)

Looks for a label within the messages based on the id. If found, it is used, otherwise the name is converted to a user presentable form.

toUserPresentable

public static String toUserPresentable(String id)

Capitalizes the string, and inserts a space before each upper case character (or sequence of upper case characters). Thus "userId" becomes "User Id", etc. Also, converts underscore into space (and capitalizes the following word), thus "user_id" also becomes "User Id".

toAnnotationProvider

public static AnnotationProvider toAnnotationProvider(Class element)

Since:

5.3

asString

public static String asString(Method method)

Converts a method to a user presentable string consisting of the containing class name, the method name, and the short form of the parameter list (the class name of each parameter type, shorn of the package name portion).

Parameters:

method -

Returns:

short string representation

stripMemberName

public static String stripMemberName(String memberName)

Strips leading "_" and "$" and trailing "_" from the name.

join

public static String join(List elements)

Joins together some number of elements to form a comma separated list.

join

public static String join(List elements,
                          String separator)

Joins together some number of elements. If a value in the list is the empty string, it is replaced with the string "(blank)".

Parameters:

elements - objects to be joined together

separator - used between elements when joining

joinSorted

public static String joinSorted(Collection elements)

Creates a sorted copy of the provided elements, then turns that into a comma separated list.

Returns:

the elements converted to strings, sorted, joined with comma ... or "(none)" if the elements are null or empty

isBlank

public static boolean isBlank(String input)

Returns true if the input is null, or is a zero length string (excluding leading/trailing whitespace).

capitalize

public static String capitalize(String input)

Capitalizes a string, converting the first character to uppercase.

isNonBlank

public static boolean isNonBlank(String input)

containsSymbols

public static boolean containsSymbols(String input)

Return true if the input string contains the marker for symbols that must be expanded.

lastTerm

public static String lastTerm(String input)

Searches the string for the final period ('.') character and returns everything after that. The input string is generally a fully qualified class name, though tapestry-core also uses this method for the occasional property expression (which is also dot separated). Returns the input string unchanged if it does not contain a period character.

sortedKeys

public static List<String> sortedKeys(Map map)

Extracts the string keys from a map and returns them in sorted order. The keys are converted to strings.

Parameters:

map - the map to extract keys from (may be null)

Returns:

the sorted keys, or the empty set if map is null