org.springframework.core

Class LocalVariableTableParameterNameDiscoverer

  • java.lang.Object
    • org.springframework.core.LocalVariableTableParameterNameDiscoverer
  • All Implemented Interfaces:
    ParameterNameDiscoverer


    public class LocalVariableTableParameterNameDiscoverer
    extends java.lang.Object
    implements ParameterNameDiscoverer
    Implementation of ParameterNameDiscoverer that uses the LocalVariableTable information in the method attributes to discover parameter names. Returns null if the class file was compiled without debug information.

    Uses ObjectWeb's ASM library for analyzing class files. Each discoverer instance caches the ASM discovered information for each introspected Class, in a thread-safe manner. It is recommended to reuse ParameterNameDiscoverer instances as far as possible.

    Since:
    2.0
    Author:
    Adrian Colyer, Costin Leau, Juergen Hoeller, Chris Beams
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method and Description
      java.lang.String[] getParameterNames(java.lang.reflect.Constructor<?> ctor)
      Return parameter names for this constructor, or null if they cannot be determined.
      java.lang.String[] getParameterNames(java.lang.reflect.Method method)
      Return parameter names for this method, or null if they cannot be determined.
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • LocalVariableTableParameterNameDiscoverer

        public LocalVariableTableParameterNameDiscoverer()
    • Method Detail

      • getParameterNames

        @Nullable
        public java.lang.String[] getParameterNames(java.lang.reflect.Method method)
        Description copied from interface: ParameterNameDiscoverer
        Return parameter names for this method, or null if they cannot be determined.
        Specified by:
        getParameterNames in interface ParameterNameDiscoverer
        Parameters:
        method - method to find parameter names for
        Returns:
        an array of parameter names if the names can be resolved, or null if they cannot
      • getParameterNames

        @Nullable
        public java.lang.String[] getParameterNames(java.lang.reflect.Constructor<?> ctor)
        Description copied from interface: ParameterNameDiscoverer
        Return parameter names for this constructor, or null if they cannot be determined.
        Specified by:
        getParameterNames in interface ParameterNameDiscoverer
        Parameters:
        ctor - constructor to find parameter names for
        Returns:
        an array of parameter names if the names can be resolved, or null if they cannot