org.picocontainer.injectors.AdaptingInjection Maven / Gradle / Ivy
/*****************************************************************************
* Copyright (c) PicoContainer Organization. All rights reserved. *
* ------------------------------------------------------------------------- *
* The software in this package is published under the terms of the BSD *
* style license a copy of which has been included with this distribution in *
* the LICENSE.txt file. *
* *
* Idea by Rachel Davies, Original code by Aslak Hellesoy and Paul Hammant *
*****************************************************************************/
package org.picocontainer.injectors;
import java.lang.reflect.AccessibleObject;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Properties;
import org.picocontainer.Characteristics;
import org.picocontainer.ComponentAdapter;
import org.picocontainer.ComponentMonitor;
import org.picocontainer.LifecycleStrategy;
import org.picocontainer.Parameter;
import org.picocontainer.PicoCompositionException;
import org.picocontainer.annotations.Inject;
import org.picocontainer.behaviors.AbstractBehaviorFactory;
/**
* Creates injector instances, depending on the injection characteristics of the component class.
* It will attempt to create a component adapter with - in order of priority:
*
* - Annotated field injection: if annotation {@link org.picocontainer.annotations.Inject} is found for field
* - Annotated method injection: if annotation {@link org.picocontainer.annotations.Inject} is found for method
* - Setter injection: if {@link Characteristics.SDI} is found
* - Method injection: if {@link Characteristics.METHOD_INJECTION} if found
* - Constructor injection (the default, must find {@link Characteristics.CDI})
*
*
* @author Paul Hammant
* @author Mauro Talevi
* @see AnnotatedFieldInjection
* @see AnnotatedMethodInjection
* @see SetterInjection
* @see MethodInjection
* @see ConstructorInjection
*/
@SuppressWarnings("serial")
public class AdaptingInjection extends AbstractInjectionFactory {
public ComponentAdapter createComponentAdapter(ComponentMonitor componentMonitor,
LifecycleStrategy lifecycleStrategy,
Properties componentProperties,
Object componentKey,
Class componentImplementation,
Parameter... parameters) throws PicoCompositionException {
ComponentAdapter componentAdapter = null;
componentAdapter = fieldAnnotatedInjectionAdapter(componentImplementation,
componentMonitor,
lifecycleStrategy,
componentProperties,
componentKey,
componentAdapter,
parameters);
if (componentAdapter != null) {
return componentAdapter;
}
componentAdapter = methodAnnotatedInjectionAdapter(componentImplementation,
componentMonitor,
lifecycleStrategy,
componentProperties,
componentKey,
componentAdapter,
parameters);
if (componentAdapter != null) {
return componentAdapter;
}
componentAdapter = setterInjectionAdapter(componentProperties,
componentMonitor,
lifecycleStrategy,
componentKey,
componentImplementation,
componentAdapter,
parameters);
if (componentAdapter != null) {
return componentAdapter;
}
componentAdapter = methodInjectionAdapter(componentProperties,
componentMonitor,
lifecycleStrategy,
componentKey,
componentImplementation,
componentAdapter,
parameters);
if (componentAdapter != null) {
return componentAdapter;
}
return defaultInjectionAdapter(componentProperties,
componentMonitor,
lifecycleStrategy,
componentKey,
componentImplementation,
parameters);
}
private ComponentAdapter defaultInjectionAdapter(Properties componentProperties,
ComponentMonitor componentMonitor,
LifecycleStrategy lifecycleStrategy,
Object componentKey,
Class componentImplementation, Parameter... parameters) {
AbstractBehaviorFactory.removePropertiesIfPresent(componentProperties, Characteristics.CDI);
return new ConstructorInjection().createComponentAdapter(componentMonitor,
lifecycleStrategy,
componentProperties,
componentKey,
componentImplementation,
parameters);
}
private ComponentAdapter setterInjectionAdapter(Properties componentProperties,
ComponentMonitor componentMonitor,
LifecycleStrategy lifecycleStrategy,
Object componentKey,
Class componentImplementation,
ComponentAdapter componentAdapter,
Parameter... parameters) {
if (AbstractBehaviorFactory.removePropertiesIfPresent(componentProperties, Characteristics.SDI)) {
componentAdapter = new SetterInjection().createComponentAdapter(componentMonitor, lifecycleStrategy,
componentProperties,
componentKey,
componentImplementation,
parameters);
}
return componentAdapter;
}
private ComponentAdapter methodInjectionAdapter(Properties componentProperties,
ComponentMonitor componentMonitor,
LifecycleStrategy lifecycleStrategy,
Object componentKey,
Class componentImplementation,
ComponentAdapter componentAdapter,
Parameter... parameters) {
if (AbstractBehaviorFactory.removePropertiesIfPresent(componentProperties, Characteristics.METHOD_INJECTION)) {
componentAdapter = new MethodInjection().createComponentAdapter(componentMonitor, lifecycleStrategy,
componentProperties,
componentKey,
componentImplementation,
parameters);
}
return componentAdapter;
}
private ComponentAdapter methodAnnotatedInjectionAdapter(Class componentImplementation,
ComponentMonitor componentMonitor,
LifecycleStrategy lifecycleStrategy,
Properties componentProperties,
Object componentKey,
ComponentAdapter componentAdapter,
Parameter... parameters) {
if (injectionMethodAnnotated(componentImplementation)) {
componentAdapter =
new AnnotatedMethodInjection().createComponentAdapter(componentMonitor,
lifecycleStrategy,
componentProperties,
componentKey,
componentImplementation,
parameters);
}
return componentAdapter;
}
private ComponentAdapter fieldAnnotatedInjectionAdapter(Class componentImplementation,
ComponentMonitor componentMonitor,
LifecycleStrategy lifecycleStrategy,
Properties componentProperties,
Object componentKey, ComponentAdapter componentAdapter, Parameter... parameters) {
if (injectionFieldAnnotated(componentImplementation)) {
componentAdapter = new AnnotatedFieldInjection().createComponentAdapter(componentMonitor,
lifecycleStrategy,
componentProperties,
componentKey,
componentImplementation,
parameters);
}
return componentAdapter;
}
private boolean injectionMethodAnnotated(final Class componentImplementation) {
return (Boolean) AccessController.doPrivileged(new PrivilegedAction © 2015 - 2024 Weber Informatics LLC | Privacy Policy