Example usage for org.springframework.batch.core.step StepLocator getStepNames

Introduction

In this page you can find the example usage for org.springframework.batch.core.step StepLocator getStepNames.

Prototype

Collection<String> getStepNames();

Source Link

Usage

From source file:org.springframework.batch.core.configuration.support.DefaultJobLoader.java

/**
 * Returns all the {@link Step} instances defined by the specified {@link StepLocator}.
 * <br>/*from  w ww .ja v a2s.  co  m*/
 * The specified <tt>jobApplicationContext</tt> is used to collect additional steps that
 * are not exposed by the step locator
 *
 * @param stepLocator the given step locator
 * @param jobApplicationContext the application context of the job
 * @return all the {@link Step} defined by the given step locator and context
 * @see StepLocator
 */
private Collection<Step> getSteps(final StepLocator stepLocator,
        final ApplicationContext jobApplicationContext) {
    final Collection<String> stepNames = stepLocator.getStepNames();
    final Collection<Step> result = new ArrayList<Step>();
    for (String stepName : stepNames) {
        result.add(stepLocator.getStep(stepName));
    }

    // Because some steps are referenced by name, we need to look in the context to see if there
    // are more Step instances defined. Right now they are registered as being available in the
    // context of the job but we have no idea if they are linked to that Job or not.
    final Map<String, Step> allSteps = jobApplicationContext.getBeansOfType(Step.class);
    for (Map.Entry<String, Step> entry : allSteps.entrySet()) {
        if (!stepNames.contains(entry.getKey())) {
            result.add(entry.getValue());
        }
    }
    return result;
}

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