spring-batch State 源码
spring-batch State 代码
文件路径：/spring-batch-core/src/main/java/org/springframework/batch/core/job/flow/State.java
/*
* Copyright 2006-2007 the original author or authors.
*
* 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.springframework.batch.core.job.flow;
/**
* @author Dave Syer
* @since 2.0
*/
public interface State {
/**
* The name of the state. Should be unique within a flow.
* @return the name of this state
*/
String getName();
/**
* Handle some business or processing logic and return a status that can be used to
* drive a flow to the next {@link State}. The status can be any string, but special
* meaning is assigned to the static constants in {@link FlowExecution}. The context
* can be used by implementations to do whatever they need to do. The same context
* will be passed to all {@link State} instances, so implementations should be careful
* that the context is thread-safe, or used in a thread-safe manner.
* @param executor the context passed in by the caller
* @return a status for the execution
* @throws Exception if anything goes wrong
*/
FlowExecutionStatus handle(FlowExecutor executor) throws Exception;
/**
* Inquire as to whether a {@link State} is an end state. Implementations should
* return false if processing can continue, even if that would require a restart.
* @return true if this {@link State} is the end of processing
*/
boolean isEndState();
}
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