RESOLVED - issue BATCH-1185: Job slows when step scope is used

http://jira.springframework.org/browse/BATCH-1185

spring-batch-core/src/test/java/org/springframework/batch/core/scope/StepScopePerformanceTests.java

@@ -0,0 +1,77 @@
+package org.springframework.batch.core.scope;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.batch.core.JobExecution;
+import org.springframework.batch.core.StepExecution;
+import org.springframework.batch.core.scope.context.StepSynchronizationManager;
+import org.springframework.batch.item.ExecutionContext;
+import org.springframework.batch.item.ItemStreamReader;
+import org.springframework.beans.BeansException;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.ApplicationContextAware;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.util.StopWatch;
+
+@ContextConfiguration
+@RunWith(SpringJUnit4ClassRunner.class)
+public class StepScopePerformanceTests implements ApplicationContextAware {
+	
+	private Log logger = LogFactory.getLog(getClass());
+
+	private ApplicationContext applicationContext;
+
+	public void setApplicationContext(ApplicationContext applicationContext)
+			throws BeansException {
+		this.applicationContext = applicationContext;
+
+	}
+
+	@Before
+	public void start() throws Exception {
+		int count = doTest("vanilla", "warmup");
+		logger.info("Item count: "+count);
+		StepSynchronizationManager.register(new StepExecution("step", new JobExecution(0L),1L));
+	}
+
+	@Before
+	@After
+	public void cleanup() {
+		StepSynchronizationManager.close();
+	}
+
+	@Test
+	public void testVanilla() throws Exception {
+		int count = doTest("vanilla", "vanilla");
+		logger.info("Item count: "+count);
+	}
+
+	@Test
+	public void testProxied() throws Exception {
+		int count = doTest("proxied", "proxied");
+		logger.info("Item count: "+count);
+	}
+
+	private int doTest(String name, String test) throws Exception {
+		@SuppressWarnings("unchecked")
+		ItemStreamReader<String> reader = (ItemStreamReader<String>) applicationContext.getBean(name);
+		reader.open(new ExecutionContext());
+		StopWatch stopWatch = new StopWatch(test);
+		stopWatch.start();
+		int count = 0;
+		while (reader.read() != null) {
+			// do nothing
+			count++;
+		}
+		stopWatch.stop();
+		reader.close();
+		logger.info(stopWatch.shortSummary());
+		return count;
+	}
+
+}