edu.vt.middleware.ldap.props
Class AbstractPropertyInvoker

java.lang.Object
  edu.vt.middleware.ldap.props.AbstractPropertyInvoker

Direct Known Subclasses:

LdapConfigPropertyInvoker, SimplePropertyInvoker

public abstract class AbstractPropertyInvoker
extends Object

AbstractPropertyInvoker provides methods common to property invokers.

Version:

$Revision: 1616 $ $Date: 2010-09-21 13:22:27 -0400 (Tue, 21 Sep 2010) $

Author:

Middleware Services

Field Summary

protected Class<?>	clazz Class to invoke methods on.
protected org.apache.commons.logging.Log	logger Log for this class.
protected Map<String,Method[]>	properties Map of all properties to their getter and setter methods.
protected static Map<String,Map<String,Method[]>>	PROPERTIES_CACHE Cache of properties.

Constructor Summary

AbstractPropertyInvoker()

Method Summary

protected abstract Object	convertValue(Class<?> type, String value) This converts the supplied string value into an Object of the appropriate supplied type.
static Class<?>	createClass(String className) Creates the class with the supplied name.
Set<String>	getProperties() This returns the property keys.
boolean	hasProperty(String name) This returns whether the supplied property exists.
protected void	initialize(Class<?> c, String domain) Initializes the properties map with the supplied class.
static <T> T	instantiateType(T type, String className) Creates an instance of the supplied type.
static Object	invokeMethod(Method method, Object object, Object arg) Invokes the supplied method on the supplied object with the supplied argument.
void	setProperty(Object object, String name, String value) This invokes the setter method for the supplied property name with the supplied value.

Methods inherited from class java.lang.Object

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

Field Detail

PROPERTIES_CACHE

protected static final Map<String,Map<String,Method[]>> PROPERTIES_CACHE

Cache of properties.

logger

protected final org.apache.commons.logging.Log logger

Log for this class.

clazz

protected Class<?> clazz

Class to invoke methods on.

properties

protected Map<String,Method[]> properties

Map of all properties to their getter and setter methods.

Constructor Detail

AbstractPropertyInvoker

public AbstractPropertyInvoker()

Method Detail

initialize

protected void initialize(Class<?> c,
                          String domain)

Initializes the properties map with the supplied class.

Parameters:

c - to read methods from

domain - optional domain that properties are in

setProperty

public void setProperty(Object object,
                        String name,
                        String value)

This invokes the setter method for the supplied property name with the supplied value. If name or value is null, then this method does nothing.

Parameters:

object - Object to invoke method on

name - String property name

value - String property value

Throws:

IllegalArgumentException - if an invocation exception occurs

convertValue

protected abstract Object convertValue(Class<?> type,
                                       String value)

This converts the supplied string value into an Object of the appropriate supplied type. If value cannot be converted it is returned as is.

Parameters:

type - of object to convert value into

value - to parse

Returns:

object of the supplied type

hasProperty

public boolean hasProperty(String name)

This returns whether the supplied property exists.

Parameters:

name - String to check

Returns:

boolean whether the supplied property exists

getProperties

public Set<String> getProperties()

This returns the property keys.

Returns:

Set of property names

instantiateType

public static <T> T instantiateType(T type,
                                    String className)

Creates an instance of the supplied type.

Type Parameters:

T - type of class returned

Parameters:

type - of class to create

className - to create

Returns:

class of type T

Throws:

IllegalArgumentException - if the supplied class name cannot create a new instance of T

createClass

public static Class<?> createClass(String className)

Creates the class with the supplied name.

Parameters:

className - to create

Returns:

class

Throws:

IllegalArgumentException - if the supplied class name cannot be created

invokeMethod

public static Object invokeMethod(Method method,
                                  Object object,
                                  Object arg)

Invokes the supplied method on the supplied object with the supplied argument.

Parameters:

method - Method to invoke

object - Object to invoke method on

arg - Object to invoke method with

Returns:

Object produced by the invocation

Throws:

IllegalArgumentException - if an error occurs invoking the method