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java.lang.Objectorg.apache.wicket.spring.injection.annot.AnnotProxyFieldValueFactory
public class AnnotProxyFieldValueFactory
IFieldValueFactory that uses LazyInitProxyFactory to create proxies for Spring
dependencies based on the SpringBean annotation applied to a field. This class is usually
used by the SpringComponentInjector to inject objects with lazy init proxies. However,
this class can be used on its own to create proxies for any field decorated with a
SpringBean annotation.
Example:
IFieldValueFactory factory = new AnnotProxyFieldValueFactory(contextLocator);
field = obj.getClass().getDeclaredField("dependency");
IDependency dependency = (IDependency)factory.getFieldValue(field, obj);
In the example above the
dependency object returned is a lazy init proxy that will look up the actual
IDependency bean from spring context upon first access to one of the methods.
This class will also cache any produced proxies so that the same proxy is always returned for the same spring dependency. This helps cut down on session size beacause proxies for the same dependency will not be serialized twice.
LazyInitProxyFactory,
SpringBean,
SpringBeanLocator| Constructor Summary | |
|---|---|
AnnotProxyFieldValueFactory(ISpringContextLocator contextLocator)
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AnnotProxyFieldValueFactory(ISpringContextLocator contextLocator,
boolean wrapInProxies)
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| Method Summary | |
|---|---|
Object |
getFieldValue(Field field,
Object fieldOwner)
Returns the value the field will be set to |
boolean |
supportsField(Field field)
Returns true if the factory can generate a value for the field, false otherwise. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public AnnotProxyFieldValueFactory(ISpringContextLocator contextLocator)
contextLocator - spring context locator
public AnnotProxyFieldValueFactory(ISpringContextLocator contextLocator,
boolean wrapInProxies)
contextLocator - spring context locatorwrapInProxies - whether or not wicket should wrap dependencies with specialized proxies that can
be safely serialized. in most cases this should be set to true.| Method Detail |
|---|
public Object getFieldValue(Field field,
Object fieldOwner)
IFieldValueFactory
getFieldValue in interface IFieldValueFactoryfield - field being injectedfieldOwner - instance of object being injected
public boolean supportsField(Field field)
IFieldValueFactory
supportsField in interface IFieldValueFactoryfield - field
IFieldValueFactory.supportsField(java.lang.reflect.Field)
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