spring-loaded ReloadEventProcessorPlugin 源码
spring-loaded ReloadEventProcessorPlugin 代码
文件路径：/springloaded/src/main/java/org/springsource/loaded/ReloadEventProcessorPlugin.java
/*
* Copyright 2010-2012 VMware and contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springsource.loaded;
/**
* ReloadEventProcessor Plugins are called when a type is reloading. For information on registering them, see
* {@link Plugin}
*
* @author Andy Clement
* @since 0.5.0
*/
public interface ReloadEventProcessorPlugin extends Plugin {
/**
* Called when a type has been reloaded, allows the plugin to decide if the static initializer should be re-run for
* the reloaded type. If the reloaded type has a different static initializer, the new one is the one that will run.
*
* @param typename the (dotted) type name, for example java.lang.String
* @param clazz the Class object that has been reloaded
* @param encodedTimestamp an encoded time stamp for this version, containing chars (A-Za-z0-9)
* @return true if the static initializer should be re-run
*/
boolean shouldRerunStaticInitializer(String typename, Class<?> clazz, String encodedTimestamp);
// TODO expose detailed delta for changes in the type? (i.e. what new fields/methods/etc)
// TODO expose instances when they are being tracked?
/**
* Called when a type has been reloaded. Note, the class is only truly defined to the VM once, and so the Class
* object (clazz parameter) is always the same for the same type (ignoring multiple classloader situations). It is
* passed here so that plugins processing events can clear any cached state related to it. The encodedTimestamp is
* an encoding of the ID that the agent has assigned to this reloaded version of this type.
*
* @param typename the (dotted) type name, for example java.lang.String
* @param clazz the Class object that has been reloaded
* @param encodedTimestamp an encoded time stamp for this version, containing chars (A-Za-z0-9)
*/
void reloadEvent(String typename, Class<?> clazz, String encodedTimestamp);
}
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