nextapp.echo.app.reflect

Class IntrospectionUtil

java.lang.Object

nextapp.echo.app.reflect.IntrospectionUtil

public class IntrospectionUtil
extends java.lang.Object

Provides stateless utilities used for object introspection.

Constructor Summary

Constructors

Constructor and Description
IntrospectionUtil()

Method Summary

Modifier and Type	Method and Description
static java.lang.String[]	getTypeHierarchy(java.lang.String type, java.lang.ClassLoader classLoader) Returns a parent type hierarchy as an array containing the provided type and all of its parent types (excluding java.lang.Object).
static boolean	isAssignableFrom(java.lang.String testType, java.lang.String baseType, java.lang.ClassLoader classLoader) Determines if the type specified by testType can be assigned to objects of the type specified by baseType.
static boolean	isEventObject(java.lang.Class type) Determines if the provided Class is a java.util.EventObject.
static boolean	isSuperType(java.lang.String testType, java.lang.String superType, java.lang.ClassLoader classLoader) Determines if superClass is a superclass of testClass.
static java.lang.String	removePackageFromType(java.lang.String type) Removes the package name from a type name.

Methods inherited from class java.lang.Object

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

Constructor Detail

IntrospectionUtil

public IntrospectionUtil()

Method Detail

getTypeHierarchy

public static java.lang.String[] getTypeHierarchy(java.lang.String type,
                                                  java.lang.ClassLoader classLoader)
                                           throws java.lang.ClassNotFoundException

Returns a parent type hierarchy as an array containing the provided type and all of its parent types (excluding java.lang.Object). The highest-level types appear first, with the provided type at the first index.

Parameters:

type - the top-level type

classLoader - the ClassLoader through which introspection may be performed

Returns:

the type hierarchy

Throws:

java.lang.ClassNotFoundException

isAssignableFrom

public static boolean isAssignableFrom(java.lang.String testType,
                                       java.lang.String baseType,
                                       java.lang.ClassLoader classLoader)
                                throws java.lang.ClassNotFoundException

Determines if the type specified by testType can be assigned to objects of the type specified by baseType. This simply uses Class.isAssignableFrom after loading classes using the specified ClassLoader.

Parameters:

baseType - the base type

testType - the test type

classLoader - the ClassLoader to use to load the classes for testing

Throws:

java.lang.ClassNotFoundException

isEventObject

public static boolean isEventObject(java.lang.Class type)

Determines if the provided Class is a java.util.EventObject.

Parameters:

type - the Class to analyze

Returns:

true if type type extends java.util.EventObject

isSuperType

public static boolean isSuperType(java.lang.String testType,
                                  java.lang.String superType,
                                  java.lang.ClassLoader classLoader)

Determines if superClass is a superclass of testClass.

Parameters:

testType - the name class to test

superType - a class name which may/may not be a superclass of testClass

classLoader - a ClassLoader to use for the analysis.

Returns:

true if superClass is a superclass of testClass

removePackageFromType

public static java.lang.String removePackageFromType(java.lang.String type)

Removes the package name from a type name.

Parameters:

type - a fully qualified type name

Returns:

a relative version of the type name