org.zkoss.lang.reflect

Class Fields

java.lang.Object

org.zkoss.lang.reflect.Fields

public class Fields
extends java.lang.Object

Utilities to access fields.

Author:

tomyeh

Constructor Summary

Constructors

Constructor and Description
Fields()

Method Summary

Modifier and Type	Method and Description
static java.lang.Object	get(java.lang.Object obj, java.lang.String name) Returns the value of the specified public field or public method in the object.
static java.lang.Object	getByCompound(java.lang.Object obj, java.lang.String name) Returns the value of the specified public field or public method of the object.
static void	set(java.lang.Object obj, java.lang.String name, java.lang.Object val, boolean autoCoerce) Sets the value of the specified public filed or public method in the object.
static void	setAccessible(java.lang.reflect.AccessibleObject f, boolean accessible) Changes the accessibility without throwing any exception.
static void	setByCompound(java.lang.Object obj, java.lang.String name, java.lang.Object val) Sets the value of the specified public field or public method in the object, without converting the specified val.
static void	setByCompound(java.lang.Object obj, java.lang.String name, java.lang.Object val, boolean autoCoerce) Sets the value of the specified public field or public method in the object.

Methods inherited from class java.lang.Object

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

Constructor Detail

Fields

public Fields()

Method Detail

setAccessible

public static final void setAccessible(java.lang.reflect.AccessibleObject f,
                                       boolean accessible)

Changes the accessibility without throwing any exception.

Since:

3.0.3

getByCompound

public static final java.lang.Object getByCompound(java.lang.Object obj,
                                                   java.lang.String name)
                                            throws java.lang.NoSuchMethodException

Returns the value of the specified public field or public method of the object.

If getByCompound(obj, "a.b.c") is called and obj.getA() or obj.getA().getB() returns null, the result is null. However, NullPointerException is thrown if obj is null.

Parameters:

name - the field name. It can be in form of "a.b.c", but cannot be an expression. It must be a public field or public method (prefixed with set).

Throws:

java.lang.NoSuchMethodException - if no corresponding field.

setByCompound

public static final void setByCompound(java.lang.Object obj,
                                       java.lang.String name,
                                       java.lang.Object val,
                                       boolean autoCoerce)
                                throws java.lang.NoSuchMethodException

Sets the value of the specified public field or public method in the object.

Parameters:

autoCoerce - whether to automatically convert val to the proper class that matches the argument of method or field.

Throws:

java.lang.NoSuchMethodException

setByCompound

public static final void setByCompound(java.lang.Object obj,
                                       java.lang.String name,
                                       java.lang.Object val)
                                throws java.lang.NoSuchMethodException

Sets the value of the specified public field or public method in the object, without converting the specified val.

It is a shortcut of setByCompound(obj, name, val, false).

Parameters:

name - the field name. It can be in form of "a.b.c", but cannot be an expression. It must be a public field or public method (prefixed with set).

Throws:

java.lang.NoSuchMethodException

get

public static final java.lang.Object get(java.lang.Object obj,
                                         java.lang.String name)
                                  throws java.lang.NoSuchMethodException

Returns the value of the specified public field or public method in the object. Unlike getByCompound(java.lang.Object, java.lang.String), name cannot contain '.'. In other words, it must be the name of a public field or method (prefixed with get).

Throws:

java.lang.NoSuchMethodException

set

public static final void set(java.lang.Object obj,
                             java.lang.String name,
                             java.lang.Object val,
                             boolean autoCoerce)
                      throws java.lang.NoSuchMethodException

Sets the value of the specified public filed or public method in the object. Unlike setByCompound(java.lang.Object, java.lang.String, java.lang.Object, boolean), name cannot contain '.'. In other words, it must be the name of a public field or method (prefixed with set).

Throws:

java.lang.NoSuchMethodException