org.picocontainer.behaviors

Class PropertyApplicator<T>

java.lang.Object

org.picocontainer.behaviors.AbstractBehavior<T>

org.picocontainer.behaviors.PropertyApplicator<T>

All Implemented Interfaces:

Serializable, Behavior<T>, ComponentAdapter<T>, ComponentLifecycle<T>, ComponentMonitorStrategy, LifecycleStrategy

public class PropertyApplicator<T>
extends AbstractBehavior<T>

Decorating component adapter that can be used to set additional properties on a component in a bean style. These properties must be managed manually by the user of the API, and will not be managed by PicoContainer. This class is therefore not the same as SetterInjector, which is a true Setter Injection adapter.

This adapter is mostly handy for setting various primitive properties via setters; it is also able to set javabean properties by discovering an appropriate PropertyEditor and using its setAsText method.

Note that this class doesn't cache instances. If you want caching, use a Cached around this one.

Author:

Aslak Hellesøy, Mauro Talevi

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.picocontainer.ComponentAdapter

ComponentAdapter.NOTHING

Field Summary

Fields inherited from class org.picocontainer.behaviors.AbstractBehavior

delegate

Constructor Summary

Constructors

Constructor and Description
PropertyApplicator(ComponentAdapter<T> delegate) Construct a PropertyApplicator.

Method Summary

Methods

Modifier and Type	Method and Description
static Object	convert(String typeName, String value, ClassLoader classLoader) Converts a String value of a named type to an object.
T	getComponentInstance(PicoContainer container, Type into) Get a component instance and set given property values.
String	getDescriptor() Get a string key descriptor of the component adapter for use in toString()
void	setProperties(Map<String,String> properties) Sets the bean property values that should be set upon creation.
void	setProperty(String name, String value)

Methods inherited from class org.picocontainer.behaviors.AbstractBehavior

accept, changeMonitor, componentHasLifecycle, currentMonitor, dispose, dispose, findAdapterOfType, getComponentImplementation, getComponentInstance, getComponentKey, getDelegate, hasLifecycle, isLazy, isStarted, start, start, stop, stop, toString, verify

Methods inherited from class java.lang.Object

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

Constructor Detail

PropertyApplicator

public PropertyApplicator(ComponentAdapter<T> delegate)
                   throws PicoCompositionException

Construct a PropertyApplicator.

Parameters:

delegate - the wrapped ComponentAdapter

Throws:

PicoCompositionException

Method Detail

getComponentInstance

public T getComponentInstance(PicoContainer container,
                     Type into)
                       throws PicoCompositionException

Get a component instance and set given property values.

Specified by:

getComponentInstance in interface ComponentAdapter<T>

Overrides:

getComponentInstance in class AbstractBehavior<T>

Parameters:

container - the PicoContainer, that is used to resolve any possible dependencies of the instance.

into - the class that is about to be injected into. Use ComponentAdapter.NOTHING.class if this is not important to you.

Returns:

the component instance with any properties of the properties map set.

Throws:

PicoCompositionException - if the component has dependencies which could not be resolved, or instantiation of the component lead to an ambiguous situation within the container.

PicoCompositionException - if the component has dependencies which could not be resolved, or instantiation of the component lead to an ambiguous situation within the container.

PicoCompositionException - if the component has dependencies which could not be resolved, or instantiation of the component lead to an ambiguous situation within the container.

See Also:

setProperties(Map)

getDescriptor

public String getDescriptor()

Description copied from interface: ComponentAdapter

Get a string key descriptor of the component adapter for use in toString()

Returns:

the descriptor

convert

public static Object convert(String typeName,
             String value,
             ClassLoader classLoader)

Converts a String value of a named type to an object. Works with primitive wrappers, String, File, URL types, or any type that has an appropriate PropertyEditor.

Parameters:

typeName - name of the type

value - its value

classLoader - used to load a class if typeName is "class" or "java.lang.Class" (ignored otherwise)

Returns:

instantiated object or null if the type was unknown/unsupported

setProperties

public void setProperties(Map<String,String> properties)

Sets the bean property values that should be set upon creation.

Parameters:

properties - bean properties

setProperty

public void setProperty(String name,
               String value)