Package org.apache.catalina.util

Class Introspection

  • public class Introspection
extends java.lang.Object
    Provides introspection utilities that either require knowledge of Tomcat internals or are solely used by Tomcat internals.

    • Constructor Summary

      Constructors 
      Constructor Description
      Introspection()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static java.lang.Class<?> convertPrimitiveType​(java.lang.Class<?> clazz)
      Converts the primitive type to its corresponding wrapper.
      static java.lang.reflect.Field[] getDeclaredFields​(java.lang.Class<?> clazz)
      Obtain the declared fields for a class taking account of any security manager that may be configured.
      static java.lang.reflect.Method[] getDeclaredMethods​(java.lang.Class<?> clazz)
      Obtain the declared methods for a class taking account of any security manager that may be configured.
      static java.lang.String getPropertyName​(java.lang.reflect.Method setter)
      Extract the Java Bean property name from the setter name.
      static boolean isValidLifecycleCallback​(java.lang.reflect.Method method)
      Determines if a method is a valid lifecycle callback method.
      static boolean isValidSetter​(java.lang.reflect.Method method)
      Determines if a method has a valid name and signature for a Java Bean setter.
      static java.lang.Class<?> loadClass​(Context context, java.lang.String className)
      Attempt to load a class using the given Container's class loader.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • Introspection

        public Introspection()

    • Method Detail

      • getPropertyName

        public static java.lang.String getPropertyName​(java.lang.reflect.Method setter)
        Extract the Java Bean property name from the setter name. Note: This method assumes that the method name has already been checked for correctness.
        Parameters:
        setter - The setter method
        Returns:
        the bean property name

      • isValidSetter

        public static boolean isValidSetter​(java.lang.reflect.Method method)
        Determines if a method has a valid name and signature for a Java Bean setter.
        Parameters:
        method - The method to test
        Returns:
        true if the method does have a valid name and signature, else false

      • isValidLifecycleCallback

        public static boolean isValidLifecycleCallback​(java.lang.reflect.Method method)
        Determines if a method is a valid lifecycle callback method.
        Parameters:
        method - The method to test
        Returns:
        true if the method is a valid lifecycle callback method, else false

      • getDeclaredFields

        public static java.lang.reflect.Field[] getDeclaredFields​(java.lang.Class<?> clazz)
        Obtain the declared fields for a class taking account of any security manager that may be configured.
        Parameters:
        clazz - The class to introspect
        Returns:
        the class fields as an array

      • getDeclaredMethods

        public static java.lang.reflect.Method[] getDeclaredMethods​(java.lang.Class<?> clazz)
        Obtain the declared methods for a class taking account of any security manager that may be configured.
        Parameters:
        clazz - The class to introspect
        Returns:
        the class methods as an array

      • loadClass

        public static java.lang.Class<?> loadClass​(Context context,
                                           java.lang.String className)
        Attempt to load a class using the given Container's class loader. If the class cannot be loaded, a debug level log message will be written to the Container's log and null will be returned.
        Parameters:
        context - The class loader of this context will be used to attempt to load the class
        className - The class name
        Returns:
        the loaded class or null if loading failed

      • convertPrimitiveType

        public static java.lang.Class<?> convertPrimitiveType​(java.lang.Class<?> clazz)
        Converts the primitive type to its corresponding wrapper.
        Parameters:
        clazz - Class that will be evaluated
        Returns:
        if the parameter is a primitive type returns its wrapper; otherwise returns the same class