Class ExceptionMapperFactory

java.lang.Object
org.glassfish.jersey.internal.ExceptionMapperFactory
All Implemented Interfaces:
ExceptionMappers

public class ExceptionMapperFactory extends Object implements ExceptionMappers
Exception mappers implementation that aggregates exception mappers and server as the main entry point for exception mapper instance lookup.
  • Field Details

  • Constructor Details

    • ExceptionMapperFactory

      public ExceptionMapperFactory(InjectionManager injectionManager)
      Create new exception mapper factory initialized with injection manager instance that will be used to look up all providers implementing ExceptionMapper interface.
      Parameters:
      injectionManager - injection manager.
  • Method Details

    • findMapping

      public <T extends Throwable> javax.ws.rs.ext.ExceptionMapper<T> findMapping(T exceptionInstance)
      Description copied from interface: ExceptionMappers
      Get an exception mapping provider for a particular exception instance.

      This method is similar to method ExceptionMappers.find(Class). In addition it takes into an account the result of the ExtendedExceptionMapper.isMappable(Throwable) of any mapper that implements Jersey ExtendedExceptionMapper API. If an extended exception mapper returns false from isMappable(Throwable), the mapper is disregarded from the search. Exception mapping providers are checked one by one until a first provider returns true from the isMappable(Throwable) method or until a first provider is found which best supports the exception type and does not implement ExtendedExceptionMapper API (i.e. it is a standard JAX-RS ExceptionMapper). The order in which the providers are checked is determined by the distance of the declared exception mapper type and the actual exception type.

      Note that if an exception mapping provider does not implement ExtendedExceptionMapper it is always considered applicable for a given exception instance.

      Specified by:
      findMapping in interface ExceptionMappers
      Type Parameters:
      T - type of the exception handled by the exception mapping provider.
      Parameters:
      exceptionInstance - exception to be handled by the exception mapping provider.
      Returns:
      an ExceptionMapper for the supplied exception instance type or null if none is found.
    • find

      public <T extends Throwable> javax.ws.rs.ext.ExceptionMapper<T> find(Class<T> type)
      Description copied from interface: ExceptionMappers
      Get an exception mapping provider for a particular class of exception. Returns the provider whose generic type is the nearest superclass of type.
      Specified by:
      find in interface ExceptionMappers
      Type Parameters:
      T - type of the exception handled by the exception mapping provider.
      Parameters:
      type - the class of exception.
      Returns:
      an ExceptionMapper for the supplied type or null if none is found.
    • find

      private <T extends Throwable> javax.ws.rs.ext.ExceptionMapper<T> find(Class<T> type, T exceptionInstance)
    • isPreferredCandidate

      private <T extends Throwable> boolean isPreferredCandidate(T exceptionInstance, javax.ws.rs.ext.ExceptionMapper<T> candidate, boolean sameDistance)
      Determines whether the currently considered candidate should be preferred over the previous one.
      Type Parameters:
      T - exception type.
      Parameters:
      exceptionInstance - exception to be mapped.
      candidate - mapper able to map given exception type.
      sameDistance - flag indicating whether this and the previously considered candidate are in the same distance.
      Returns:
      true if the given candidate is preferred over the previous one with the same or lower distance, false otherwise.
    • createLazyExceptionMappers

      private LazyValue<Set<ExceptionMapperFactory.ExceptionMapperType>> createLazyExceptionMappers(InjectionManager injectionManager)
      Returns LazyValue of exception mappers that delays their creation to the first use. The exception mappers won't be created during bootstrap but at the time of the first call.
      Parameters:
      injectionManager - injection manager that may not be fully populated at the time of a function call therefore the result is wrapped to lazy value.
      Returns:
      lazy value of exception mappers.
    • distance

      private int distance(Class<?> c, Class<?> emtc)
    • getExceptionType

      private Class<? extends Throwable> getExceptionType(Class<? extends javax.ws.rs.ext.ExceptionMapper> c)
    • getType

      private Class getType(Class<? extends javax.ws.rs.ext.ExceptionMapper> clazz)
      Get exception type for given exception mapper class.
      Parameters:
      clazz - class to get exception type for.
      Returns:
      exception type for given class.
    • getTypeFromInterface

      private Class getTypeFromInterface(Class<?> clazz, Class<? extends javax.ws.rs.ext.ExceptionMapper> original)
      Iterate through interface hierarchy of clazz and get exception type for given class.
      Parameters:
      clazz - class to inspect.
      Returns:
      exception type for given class or null if the class doesn't implement ExceptionMapper.
    • getResolvedType

      private Class getResolvedType(Type t, Class c, Class dc)