Added ability to cofigure CommandLineRunner order

This commit adds the ability to configure the order for the
TaskJobLauncherCommandLineRunner.  It also provides minor polish on a
few other code review related items.

spring-cloud-task-batch/src/main/java/org/springframework/cloud/task/batch/configuration/TaskBatchProperties.java

@@ -23,6 +23,9 @@ import org.springframework.boot.context.properties.ConfigurationProperties;
  * Spring Batch.
  *
  * @author Glenn Renfro
+ * @author Michael Minella
+ *
+ * @since 2.0.0
  */
 @ConfigurationProperties(prefix = "spring.cloud.task.batch")
 public class TaskBatchProperties {
@@ -33,6 +36,13 @@ public class TaskBatchProperties {
 	 */
 	private String jobNames = "";
 
+	/**
+	 * The order for the {@coce CommandLineRunner} used to run batch jobs when
+	 * {@code spring.cloud.task.batch.failOnJobFailure=true}.  Defaults to 0 (same as the
+	 * {@link org.springframework.boot.autoconfigure.batch.JobLauncherCommandLineRunner}).
+	 */
+	private int commandLineRunnerOrder = 0;
+
 	public String getJobNames() {
 		return this.jobNames;
 	}
@@ -40,4 +50,12 @@ public class TaskBatchProperties {
 	public void setJobNames(String jobNames) {
 		this.jobNames = jobNames;
 	}
+
+	public int getCommandLineRunnerOrder() {
+		return commandLineRunnerOrder;
+	}
+
+	public void setCommandLineRunnerOrder(int commandLineRunnerOrder) {
+		this.commandLineRunnerOrder = commandLineRunnerOrder;
+	}
 }

spring-cloud-task-batch/src/main/java/org/springframework/cloud/task/batch/configuration/TaskJobLauncherAutoConfiguration.java

@@ -23,7 +23,6 @@ import org.springframework.batch.core.configuration.JobRegistry;
 import org.springframework.batch.core.explore.JobExplorer;
 import org.springframework.batch.core.launch.JobLauncher;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.context.annotation.Bean;
@@ -36,7 +35,7 @@ import org.springframework.context.annotation.Configuration;
  * @author Glenn Renfro
  */
 @Configuration
-@ConditionalOnProperty(name = "spring.cloud.task.batch.commandLineRunnerEnabled", havingValue = "true", matchIfMissing = false)
+@ConditionalOnProperty(name = "spring.cloud.task.batch.failOnJobFailure", havingValue = "true", matchIfMissing = false)
 @EnableConfigurationProperties(TaskBatchProperties.class)
 public class TaskJobLauncherAutoConfiguration {
 
@@ -46,8 +45,15 @@ public class TaskJobLauncherAutoConfiguration {
 	@Bean
 	public TaskJobLauncherCommandLineRunnerFactoryBean jobLauncherCommandLineRunner(JobLauncher jobLauncher,
 			JobExplorer jobExplorer, List<Job> jobs, JobRegistry jobRegistry) {
-		TaskJobLauncherCommandLineRunnerFactoryBean taskJobLauncherCommandLineRunner = new TaskJobLauncherCommandLineRunnerFactoryBean(
-				jobLauncher, jobExplorer, jobs, this.properties.getJobNames(), jobRegistry);
-		return taskJobLauncherCommandLineRunner;
+		TaskJobLauncherCommandLineRunnerFactoryBean taskJobLauncherCommandLineRunnerFactoryBean =
+				new TaskJobLauncherCommandLineRunnerFactoryBean(jobLauncher,
+						jobExplorer,
+						jobs,
+						this.properties.getJobNames(),
+						jobRegistry);
+
+		taskJobLauncherCommandLineRunnerFactoryBean.setOrder(this.properties.getCommandLineRunnerOrder());
+
+		return taskJobLauncherCommandLineRunnerFactoryBean;
 	}
 }

spring-cloud-task-batch/src/main/java/org/springframework/cloud/task/batch/configuration/TaskJobLauncherCommandLineRunnerFactoryBean.java

@@ -44,6 +44,8 @@ public class TaskJobLauncherCommandLineRunnerFactoryBean implements FactoryBean<
 
 	private JobRegistry jobRegistry;
 
+	private Integer order = 0;
+
 	public TaskJobLauncherCommandLineRunnerFactoryBean(JobLauncher jobLauncher,
 			JobExplorer jobExplorer, List<Job> jobs, String jobNames,
 			JobRegistry jobRegistry) {
@@ -55,6 +57,10 @@ public class TaskJobLauncherCommandLineRunnerFactoryBean implements FactoryBean<
 		this.jobRegistry = jobRegistry;
 	}
 
+	public void setOrder(int order) {
+		this.order = order;
+	}
+
 	@Override
 	public TaskJobLauncherCommandLineRunner getObject() throws Exception {
 		TaskJobLauncherCommandLineRunner  taskJobLauncherCommandLineRunner =
@@ -64,6 +70,11 @@ public class TaskJobLauncherCommandLineRunnerFactoryBean implements FactoryBean<
 			taskJobLauncherCommandLineRunner.setJobNames(this.jobNames);
 		}
 		taskJobLauncherCommandLineRunner.setJobRegistry(this.jobRegistry);
+
+		if(this.order != null) {
+			taskJobLauncherCommandLineRunner.setOrder(this.order);
+		}
+
 		return taskJobLauncherCommandLineRunner;
 	}