spring-batch FlowJobBuilder 源码
spring-batch FlowJobBuilder 代码
文件路径：/spring-batch-core/src/main/java/org/springframework/batch/core/job/builder/FlowJobBuilder.java
/*
* Copyright 2006-2011 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.builder;
import org.springframework.batch.core.Job;
import org.springframework.batch.core.Step;
import org.springframework.batch.core.job.flow.Flow;
import org.springframework.batch.core.job.flow.FlowJob;
import org.springframework.batch.core.step.builder.StepBuilderException;
/**
* A job builder for {@link FlowJob} instances. A flow job delegates processing to a
* nested flow composed of steps and conditional transitions between steps.
*
* @author Dave Syer
* @since 2.2
*/
public class FlowJobBuilder extends JobBuilderHelper<FlowJobBuilder> {
private Flow flow;
/**
* Create a new builder initialized with any properties in the parent. The parent is
* copied, so it can be re-used.
* @param parent a parent helper containing common job properties
*/
public FlowJobBuilder(JobBuilderHelper<?> parent) {
super(parent);
}
/**
* Start a job with this flow, but expect to transition from there to other flows or
* steps.
* @param flow the flow to start with
* @return a builder to enable fluent chaining
*/
public JobFlowBuilder start(Flow flow) {
return new JobFlowBuilder(this, flow);
}
/**
* Start a job with this step, but expect to transition from there to other flows or
* steps.
* @param step the step to start with
* @return a builder to enable fluent chaining
*/
public JobFlowBuilder start(Step step) {
return new JobFlowBuilder(this, step);
}
/**
* Provide a single flow to execute as the job.
* @param flow the flow to execute
* @return this for fluent chaining
*/
protected FlowJobBuilder flow(Flow flow) {
this.flow = flow;
return this;
}
/**
* Build a job that executes the flow provided, normally composed of other steps.
* @return a flow job
*/
public Job build() {
FlowJob job = new FlowJob();
job.setName(getName());
job.setFlow(flow);
super.enhance(job);
try {
job.afterPropertiesSet();
}
catch (Exception e) {
throw new StepBuilderException(e);
}
return job;
}
}
相关信息
相关文章
spring-batch FlowBuilderException 源码
spring-batch JobBuilderException 源码
spring-batch JobBuilderHelper 源码
spring-batch JobFlowBuilder 源码
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