Class InternalUtils

java.lang.Object
org.apache.tapestry5.ioc.internal.util.InternalUtils

public class InternalUtils extends Object
Utilities used within various internal implementations of the tapestry-ioc module.
  • Field Details

  • Constructor Details

  • Method Details

    • asString

      public static String asString(Method method, PlasticProxyFactory proxyFactory)
      Converts a method to a user presentable string using a PlasticProxyFactory to obtain a Location (where possible). asString(Method) is used under the covers, to present a detailed, but not excessive, description of the class, method and parameters.
      Parameters:
      method - method to convert to a string
      proxyFactory - used to obtain the Location
      Returns:
      the method formatted for presentation to the user
    • 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
    • size

      public static int size(Object[] array)
      Returns the size of an object array, or null if the array is empty.
    • size

      public static int size(Collection collection)
    • stripMemberName

      public static String stripMemberName(String memberName)
      Strips leading "_" and "$" and trailing "_" from the name.
    • toList

      public static List<String> toList(Enumeration e)
      Converts an enumeration (of Strings) into a sorted list of Strings.
    • findAnnotation

      public static <T extends Annotation> T findAnnotation(Annotation[] annotations, Class<T> annotationClass)
      Finds a specific annotation type within an array of annotations.
      Type Parameters:
      T -
      Parameters:
      annotations - to search
      annotationClass - to match
      Returns:
      the annotation instance, if found, or null otherwise
    • calculateParametersForMethod

      public static ObjectCreator[] calculateParametersForMethod(Method method, ObjectLocator locator, InjectionResources resources, OperationTracker tracker)
    • calculateParameters

      public static ObjectCreator[] calculateParameters(ObjectLocator locator, InjectionResources resources, Class[] parameterTypes, Type[] genericTypes, Annotation[][] parameterAnnotations, OperationTracker tracker)
    • injectIntoFields

      public static void injectIntoFields(Object object, ObjectLocator locator, InjectionResources resources, OperationTracker tracker)
      Injects into the fields (of all visibilities) when the Inject or InjectService annotations are present.
      Parameters:
      object - to be initialized
      locator - used to resolve external dependencies
      resources - provides injection resources for fields
      tracker - track operations
    • 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).
    • isEmptyCollection

      public static boolean isEmptyCollection(Object input)
      Returns true if the input is an empty collection.
    • isNonBlank

      public static boolean isNonBlank(String input)
    • capitalize

      public static String capitalize(String input)
      Capitalizes a string, converting the first character to uppercase.
    • 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.
    • keys

      public static <K, V> Set<K> keys(Map<K,V> map)
    • get

      public static <K, V> V get(Map<K,V> map, K key)
      Gets a value from a map (which may be null).
      Type Parameters:
      K -
      V -
      Parameters:
      map - the map to extract from (may be null)
      key -
      Returns:
      the value from the map, or null if the map is null
    • isStatic

      public static boolean isStatic(Method method)
      Returns true if the method provided is a static method.
    • reverseIterator

      public static <T> Iterator<T> reverseIterator(List<T> list)
    • 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.
    • findAutobuildConstructor

      Searches a class for the "best" constructor, the public constructor with the most parameters. Returns null if there are no public constructors. If there is more than one constructor with the maximum number of parameters, it is not determined which will be returned (don't build a class like that!). In addition, if a constructor is annotated with Inject, it will be used (no check for multiple such constructors is made, only at most a single constructor should have the annotation).
      Parameters:
      clazz - to search for a constructor for
      Returns:
      the constructor to be used to instantiate the class, or null if no appropriate constructor was found
    • 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
    • validateMarkerAnnotation

      public static void validateMarkerAnnotation(Class markerClass)
      Validates that the marker annotation class had a retention policy of runtime.
      Parameters:
      markerClass - the marker annotation class
    • validateMarkerAnnotations

      public static void validateMarkerAnnotations(Class[] markerClasses)
    • close

      public static void close(Closeable stream)
    • toMessage

      public static String toMessage(Throwable exception)
      Deprecated.
      Deprecated in 5.4; use ExceptionUtils.toMessage(Throwable) instead.
      Extracts the message from an exception. If the exception's message is null, returns the exceptions class name.
      Parameters:
      exception - to extract message from
      Returns:
      message or class name
    • validateConstructorForAutobuild

      public static void validateConstructorForAutobuild(Constructor constructor)
    • toAnnotationProvider

      Since:
      5.3
    • findMethod

      public static final Method findMethod(Class containingClass, String methodName, Class... parameterTypes)
    • toServiceDef3

      public static ServiceDef3 toServiceDef3(ServiceDef sd)
      Since:
      5.3
    • toServiceDef2

      public static ServiceDef2 toServiceDef2(ServiceDef sd)
    • toModuleDef2

      public static ModuleDef2 toModuleDef2(ModuleDef md)
    • toServiceLifecycle2

      Since:
      5.1.0.2
    • matchAndSort

      public static <T extends Comparable<T>> List<T> matchAndSort(Collection<? extends T> collection, Predicate<T> predicate)
      Since:
      5.2.0
    • toContributionDef2

      public static ContributionDef2 toContributionDef2(ContributionDef contribution)
      Since:
      5.2.0
    • toContributionDef3

      public static ContributionDef3 toContributionDef3(ContributionDef contribution)
    • toAdvisorDef2

      public static AdvisorDef2 toAdvisorDef2(AdvisorDef advisor)
      Since:
      5.2.2
    • toDecoratorDef2

      public static DecoratorDef2 toDecoratorDef2(DecoratorDef decorator)
      Since:
      5.2.2
    • isLocalFile

      public static boolean isLocalFile(Class clazz)
      Determines if the indicated class is stored as a locally accessible file (and not, typically, as a file inside a JAR). This is related to automatic reloading of services.
      Since:
      5.2.0
    • toMapper

      public static <S, T> Mapper<S,T> toMapper(Coercion<S,T> coercion)
      Wraps a Coercion as a Mapper.
      Since:
      5.2.0
    • nextUUID

      public static long nextUUID()
      Generates a unique value for the current execution of the application. This initial UUID value is not easily predictable; subsequent UUIDs are allocated in ascending series.
      Since:
      5.2.0
    • getServiceId

      public static String getServiceId(AnnotatedElement annotated)
      Extracts the service id from the passed annotated element. First the ServiceId annotation is checked. If present, its value is returned. Otherwise Named annotation is checked. If present, its value is returned. If neither of the annotations is present, null value is returned
      Parameters:
      annotated - annotated element to get annotations from
      Since:
      5.3
    • toAnnotationProvider

    • createConstructorConstructionPlan

      public static <T> ObjectCreator<T> createConstructorConstructionPlan(OperationTracker tracker, ObjectLocator locator, InjectionResources resources, org.slf4j.Logger logger, String description, Constructor<T> constructor)
    • createMethodInvocationPlan

      public static <T> ObjectCreator<T> createMethodInvocationPlan(OperationTracker tracker, ObjectLocator locator, InjectionResources resources, org.slf4j.Logger logger, String description, Object instance, Method method)
    • realizeObjects

      public static Object[] realizeObjects(ObjectCreator[] creators)
      Since:
      5.3.1, 5.4
    • 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
    • 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".
    • 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
    • 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.
    • replace

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