org.apache.click.util
Class PropertyUtils

java.lang.Object
  org.apache.click.util.PropertyUtils

public class PropertyUtils
extends Object

Provide property getter and setter utility methods.

Constructor Summary

PropertyUtils()

Method Summary

static Object	getValue(Object source, String name) Return the property value for the given object and property name.
static Object	getValue(Object source, String name, Map cache) Return the property value for the given object and property name.
static Object	getValueOgnl(Object source, String name, Map context) Return the property value for the given object and property name using the OGNL library.
static void	setValueOgnl(Object target, String name, Object value, Map context) Return the property value for the given object and property name using the OGNL library.

Methods inherited from class java.lang.Object

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

Constructor Detail

PropertyUtils

public PropertyUtils()

Method Detail

getValue

public static Object getValue(Object source,
                              String name)

Return the property value for the given object and property name. This method uses reflection internally to get the property value.

This method is thread-safe, and caches reflected accessor methods in an internal synchronized cache.

If the given source object is a Map this method will simply return the value for the given key name.

Parameters:

source - the source object

name - the name of the property

Returns:

the property value for the given source object and property name

getValue

public static Object getValue(Object source,
                              String name,
                              Map cache)

Return the property value for the given object and property name. This method uses reflection internally to get the property value.

This method caches the reflected property methods in the given Map cache. You must NOT modify the cache. Also note cache is ONLY valid for the current thread, as access to the cache is not synchronized. If you need multi-threaded access to shared cache use a thread-safe Map object, such as Collections.synchronizedMap(new HashMap()).

If the given source object is a Map this method will simply return the value for the given key name.

Parameters:

source - the source object

name - the name of the property

cache - the cache of reflected property Method objects, do NOT modify this cache

Returns:

the property value for the given source object and property name

getValueOgnl

public static Object getValueOgnl(Object source,
                                  String name,
                                  Map context)
                           throws ognl.OgnlException

Return the property value for the given object and property name using the OGNL library.

This method is thread-safe, and caches parsed OGNL expressions in an internal synchronized cache.

Parameters:

source - the source object

name - the name of the property

context - the OGNL context, do NOT modify this object

Returns:

the property value for the given source object and property name

Throws:

ognl.OgnlException - if an OGN error occurs

setValueOgnl

public static void setValueOgnl(Object target,
                                String name,
                                Object value,
                                Map context)
                         throws ognl.OgnlException

Return the property value for the given object and property name using the OGNL library.

This method is thread-safe, and caches parsed OGNL expressions in an internal synchronized cache.

Parameters:

target - the target object to set the property of

name - the name of the property to set

value - the property value to set

context - the OGNL context, do NOT modify this object

Throws:

ognl.OgnlException - if an OGN error occurs