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// Copyright (c) 2003-present, Jodd Team (http://jodd.org)
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
package jodd.madvoc.component;
import jodd.log.Logger;
import jodd.log.LoggerFactory;
import jodd.madvoc.MadvocException;
import jodd.mutable.MutableInteger;
import jodd.petite.PetiteContainer;
import jodd.props.Props;
import java.lang.reflect.Modifier;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.function.Consumer;
/**
* Madvoc container. Works internally with {@link jodd.petite.PetiteContainer}.
*/
public class MadvocContainer {
public static final String MADVOC_PETITE_CONTAINER_NAME = "madpc";
private static final Logger log = LoggerFactory.getLogger(MadvocContainer.class);
private final PetiteContainer madpc;
public MadvocContainer() {
madpc = new PetiteContainer();
madpc.addSelf(MADVOC_PETITE_CONTAINER_NAME);
}
/**
* Returns Petite container used for the Madvoc.
*/
public PetiteContainer getPetiteContainer() {
return madpc;
}
/**
* Registers component using its {@link #resolveBaseComponentName(Class) base name}.
* Previously defined component will be removed.
*
* @see #registerComponentInstance(Object)
*/
public void registerComponent(final Class component) {
String name = resolveBaseComponentName(component);
registerComponent(name, component);
}
public void registerComponent(final Class component, final Consumer consumer) {
String name = resolveBaseComponentName(component);
registerComponent(name, component, consumer);
}
/**
* Registers Madvoc component with given name.
*/
public void registerComponent(final String name, final Class component) {
log.debug(() -> "Madvoc WebApp component: [" + name + "] --> " + component.getName());
madpc.removeBean(name);
madpc.registerPetiteBean(component, name, null, null, false, null);
}
/**
* Registers Madvoc component with given name.
*/
public void registerComponent(final String name, final Class component, final Consumer consumer) {
log.debug(() -> "Madvoc WebApp component: [" + name + "] --> " + component.getName());
madpc.removeBean(name);
madpc.registerPetiteBean(component, name, null, null, false, consumer);
}
/**
* Registers component instance using its {@link #resolveBaseComponentName(Class) base name}.
* Previously defined component will be removed.
*
* @see #registerComponentInstance(String, Object)
*/
public void registerComponentInstance(final Object componentInstance) {
Class component = componentInstance.getClass();
String name = resolveBaseComponentName(component);
registerComponentInstance(name, componentInstance);
}
/**
* Registers component instance and wires it with internal container.
* Warning: in this moment we can not guarantee that all other components
* are registered, replaced or configuration is update; therefore DO NOT
* USE injection, unless you are absolutely sure it works.
*/
public void registerComponentInstance(final String name, final Object componentInstance) {
log.debug(() -> "Madvoc WebApp component: [" + name + "] --> " + componentInstance.getClass().getName());
madpc.removeBean(name);
madpc.addBean(name, componentInstance);
}
// ---------------------------------------------------------------- listeners
/**
* Fires the Madvoc event.
* Warning: since event handlers may register more handlers, we
* must collect first the list of components that matches the type
* and then to execute.
*/
public void fireEvent(final Class listenerType) {
final Set existing = new HashSet<>();
while (true) {
MutableInteger newCount = MutableInteger.of(0);
madpc.forEachBeanType(listenerType, name -> {
if (existing.add(name)) {
// name not found, fire!
newCount.value++;
Object listener = lookupComponent(name);
if (listener != null) {
MadvocComponentLifecycle.invoke(listener, listenerType);
}
}
});
if (newCount.value == 0) {
break;
}
}
}
// ---------------------------------------------------------------- lookup
/**
* Returns registered component or {@code null} if component is not registered.
*/
@SuppressWarnings({"unchecked"})
public T lookupComponent(final Class component) {
String name = resolveBaseComponentName(component);
return (T) madpc.getBean(name);
}
/**
* Returns existing component. Throws an exception if component is not registered.
*/
public T requestComponent(final Class component) {
T existingComponent = lookupComponent(component);
if (existingComponent == null) {
throw new MadvocException("Madvoc component not found: " + component.getName());
}
return existingComponent;
}
/**
* Returns existing component. Throws an exception if component is not registered.
*/
public T requestComponent(final String componentName) {
T existingComponent = (T) lookupComponent(componentName);
if (existingComponent == null) {
throw new MadvocException("Madvoc component not found: " + componentName);
}
return existingComponent;
}
/**
* Returns registered component or {@code null} if component does not exist.
*/
public Object lookupComponent(final String componentName) {
return madpc.getBean(componentName);
}
/**
* Resolves the name of the last base non-abstract subclass for provided component.
* It iterates all subclasses up to the Object and declares the last
* non-abstract class as base component. Component name will be resolved from the
* founded base component.
*/
private String resolveBaseComponentName(Class component) {
Class lastComponent = component;
while (true) {
Class superClass = component.getSuperclass();
if (superClass.equals(Object.class)) {
break;
}
component = superClass;
if (!Modifier.isAbstract(component.getModifiers())) {
lastComponent = component;
}
}
return madpc.resolveBeanName(lastComponent);
}
// ---------------------------------------------------------------- params
public void defineParams(final Props props) {
madpc.defineParameters(props);
}
public void defineParams(final Map params) {
madpc.defineParameters(params);
}
}
