18154768944

Committed 01 Oct 2025 07:26AM UTC coverage: 81.882% (-0.005%) from 81.887%

Build # 18154768944

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push

github

Committed by

web-flow

Commit Message

Merge pull request #290 from TAKETODAY/dev/jspecify

jspecify

Coverage Stats

59788 of 78013 branches covered (76.64%)

Branch coverage included in aggregate %.

141239 of 167496 relevant lines covered (84.32%)

3.6 hits per line

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80.33

today-context/src/main/java/infra/context/event/GenericApplicationListenerAdapter.java

/*
 * Copyright 2017 - 2025 the original author or authors.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see [https://www.gnu.org/licenses/]
 */

package infra.context.event;

import org.jspecify.annotations.Nullable;

import java.util.Map;

import infra.aop.support.AopUtils;
import infra.context.ApplicationEvent;
import infra.context.ApplicationListener;
import infra.core.Ordered;
import infra.core.ResolvableType;
import infra.lang.Assert;
import infra.util.ConcurrentReferenceHashMap;

/**
 * {@link GenericApplicationListener} adapter that determines supported event types
 * through introspecting the generically declared type of the target listener.
 *
 * @author Juergen Hoeller
 * @author Stephane Nicoll
 * @author <a href="https://github.com/TAKETODAY">Harry Yang</a>
 * @see ApplicationListener#onApplicationEvent
 * @since 4.0
 */
@SuppressWarnings("rawtypes")
public class GenericApplicationListenerAdapter implements GenericApplicationListener {

  private static final Map<Class<?>, ResolvableType> eventTypeCache = new ConcurrentReferenceHashMap<>();

  private final ApplicationListener delegate;

  @Nullable
  private final ResolvableType declaredEventType;

  /**
   * Create a new GenericApplicationListener for the given delegate.
   *
   * @param delegate the delegate listener to be invoked
   */
  public GenericApplicationListenerAdapter(ApplicationListener delegate) {
    Assert.notNull(delegate, "Delegate listener is required");
    this.delegate = delegate;
    this.declaredEventType = resolveDeclaredEventType(this.delegate);
  }

  @Override
  @SuppressWarnings("unchecked")
  public void onApplicationEvent(ApplicationEvent event) {
    this.delegate.onApplicationEvent(event);
  }

  @Override
  @SuppressWarnings("unchecked")
  public boolean supportsEventType(ResolvableType eventType) {
    if (this.delegate instanceof GenericApplicationListener) {
      return ((GenericApplicationListener) this.delegate).supportsEventType(eventType);
    }
    else if (this.delegate instanceof SmartApplicationListener) {
      Class<? extends ApplicationEvent> eventClass = (Class<? extends ApplicationEvent>) eventType.resolve();
      return eventClass != null && ((SmartApplicationListener) this.delegate).supportsEventType(eventClass);
    }
    else {
      return this.declaredEventType == null || this.declaredEventType.isAssignableFrom(eventType);
    }
  }

  @Override
  public boolean supportsSourceType(@Nullable Class<?> sourceType) {
    return !(this.delegate instanceof SmartApplicationListener)
            || ((SmartApplicationListener) this.delegate).supportsSourceType(sourceType);
  }

  @Override
  public int getOrder() {
    return this.delegate instanceof Ordered ? ((Ordered) this.delegate).getOrder() : LOWEST_PRECEDENCE;
  }

  @Override
  public String getListenerId() {
    return this.delegate instanceof SmartApplicationListener smart ? smart.getListenerId() : "";
  }

  @Nullable
  private static ResolvableType resolveDeclaredEventType(ApplicationListener<?> listener) {
    ResolvableType declaredEventType = resolveDeclaredEventType(listener.getClass());
    if (declaredEventType == null || declaredEventType.isAssignableFrom(ApplicationEvent.class)) {
      Class<?> targetClass = AopUtils.getTargetClass(listener);
      if (targetClass != listener.getClass()) {
        declaredEventType = resolveDeclaredEventType(targetClass);
      }
    }
    return declaredEventType;
  }

  @Nullable
  static ResolvableType resolveDeclaredEventType(Class<?> listenerType) {
    ResolvableType eventType = eventTypeCache.get(listenerType);
    if (eventType == null) {
      eventType = ResolvableType.forClass(listenerType)
              .as(ApplicationListener.class)
              .getGeneric();
      eventTypeCache.put(listenerType, eventType);
    }
    return eventType != ResolvableType.NONE ? eventType : null;
  }

}

1	/*
2	* Copyright 2017 - 2025 the original author or authors.
3	*
4	* This program is free software: you can redistribute it and/or modify
5	* it under the terms of the GNU General Public License as published by
6	* the Free Software Foundation, either version 3 of the License, or
7	* (at your option) any later version.
8	*
9	* This program is distributed in the hope that it will be useful,
10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12	* GNU General Public License for more details.
13	*
14	* You should have received a copy of the GNU General Public License
15	* along with this program. If not, see [https://www.gnu.org/licenses/]
16	*/
17
18	package infra.context.event;
19
20	import org.jspecify.annotations.Nullable;
21
22	import java.util.Map;
23
24	import infra.aop.support.AopUtils;
25	import infra.context.ApplicationEvent;
26	import infra.context.ApplicationListener;
27	import infra.core.Ordered;
28	import infra.core.ResolvableType;
29	import infra.lang.Assert;
30	import infra.util.ConcurrentReferenceHashMap;
31
32	/**
33	* {@link GenericApplicationListener} adapter that determines supported event types
34	* through introspecting the generically declared type of the target listener.
35	*
36	* @author Juergen Hoeller
37	* @author Stephane Nicoll
38	* @author <a href="https://github.com/TAKETODAY">Harry Yang</a>
39	* @see ApplicationListener#onApplicationEvent
40	* @since 4.0
41	*/
42	@SuppressWarnings("rawtypes")
43	public class GenericApplicationListenerAdapter implements GenericApplicationListener {
44
45	private static final Map<Class<?>, ResolvableType> eventTypeCache = new ConcurrentReferenceHashMap<>();	5✔
46
47	private final ApplicationListener delegate;
48
49	@Nullable
50	private final ResolvableType declaredEventType;
51
52	/**
53	* Create a new GenericApplicationListener for the given delegate.
54	*
55	* @param delegate the delegate listener to be invoked
56	*/
57	public GenericApplicationListenerAdapter(ApplicationListener delegate) {	2✔
58	Assert.notNull(delegate, "Delegate listener is required");	3✔
59	this.delegate = delegate;	3✔
60	this.declaredEventType = resolveDeclaredEventType(this.delegate);	5✔
61	}	1✔
62
63	@Override
64	@SuppressWarnings("unchecked")
65	public void onApplicationEvent(ApplicationEvent event) {
66	this.delegate.onApplicationEvent(event);	4✔
67	}	1✔
68
69	@Override
70	@SuppressWarnings("unchecked")
71	public boolean supportsEventType(ResolvableType eventType) {
72	if (this.delegate instanceof GenericApplicationListener) {	4!
73	return ((GenericApplicationListener) this.delegate).supportsEventType(eventType);	×
74	}
75	else if (this.delegate instanceof SmartApplicationListener) {	4✔
76	Class<? extends ApplicationEvent> eventClass = (Class<? extends ApplicationEvent>) eventType.resolve();	3✔
77	return eventClass != null && ((SmartApplicationListener) this.delegate).supportsEventType(eventClass);	12!
78	}
79	else {
80	return this.declaredEventType == null \|\| this.declaredEventType.isAssignableFrom(eventType);	12!
81	}
82	}
83
84	@Override
85	public boolean supportsSourceType(@Nullable Class<?> sourceType) {
86	return !(this.delegate instanceof SmartApplicationListener)	9✔
87	\|\| ((SmartApplicationListener) this.delegate).supportsSourceType(sourceType);	5✔
88	}
89
90	@Override
91	public int getOrder() {
92	return this.delegate instanceof Ordered ? ((Ordered) this.delegate).getOrder() : LOWEST_PRECEDENCE;	×
93	}
94
95	@Override
96	public String getListenerId() {
97	return this.delegate instanceof SmartApplicationListener smart ? smart.getListenerId() : "";	×
98	}
99
100	@Nullable
101	private static ResolvableType resolveDeclaredEventType(ApplicationListener<?> listener) {
102	ResolvableType declaredEventType = resolveDeclaredEventType(listener.getClass());	4✔
103	if (declaredEventType == null \|\| declaredEventType.isAssignableFrom(ApplicationEvent.class)) {	6!
104	Class<?> targetClass = AopUtils.getTargetClass(listener);	3✔
105	if (targetClass != listener.getClass()) {	4✔
106	declaredEventType = resolveDeclaredEventType(targetClass);	3✔
107	}
108	}
109	return declaredEventType;	2✔
110	}
111
112	@Nullable
113	static ResolvableType resolveDeclaredEventType(Class<?> listenerType) {
114	ResolvableType eventType = eventTypeCache.get(listenerType);	5✔
115	if (eventType == null) {	2✔
116	eventType = ResolvableType.forClass(listenerType)	3✔
117	.as(ApplicationListener.class)	3✔
118	.getGeneric();	2✔
119	eventTypeCache.put(listenerType, eventType);	5✔
120	}
121	return eventType != ResolvableType.NONE ? eventType : null;	6!
122	}
123
124	}

TAKETODAY / today-infrastructure / 18154768944

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