Polishing

spring-context/src/main/java/org/springframework/scheduling/concurrent/ScheduledExecutorFactoryBean.java

@@ -58,7 +58,7 @@ import org.springframework.util.ObjectUtils;
  * @author Juergen Hoeller
  * @since 2.0
  * @see #setPoolSize
- * @see #setRemoveOnCancelPolicy(boolean)
+ * @see #setRemoveOnCancelPolicy
  * @see #setThreadFactory
  * @see ScheduledExecutorTask
  * @see java.util.concurrent.ScheduledExecutorService
@@ -68,17 +68,17 @@ import org.springframework.util.ObjectUtils;
 public class ScheduledExecutorFactoryBean extends ExecutorConfigurationSupport
 		implements FactoryBean<ScheduledExecutorService> {
 
-	// ScheduledThreadPoolExecutor.setRemoveOnCancelPolicy(boolean) only available on JDK 1.7+
+	// ScheduledThreadPoolExecutor.setRemoveOnCancelPolicy(boolean) only available on JDK 7+
 	private static final boolean setRemoveOnCancelPolicyAvailable =
 			ClassUtils.hasMethod(ScheduledThreadPoolExecutor.class, "setRemoveOnCancelPolicy", boolean.class);
 
 
 	private int poolSize = 1;
 
-	private boolean removeOnCancelPolicy;
-
 	private ScheduledExecutorTask[] scheduledExecutorTasks;
 
+	private boolean removeOnCancelPolicy = false;
+
 	private boolean continueScheduledExecutionAfterException = false;
 
 	private boolean exposeUnconfigurableExecutor = false;
@@ -95,14 +95,6 @@ public class ScheduledExecutorFactoryBean extends ExecutorConfigurationSupport
 		this.poolSize = poolSize;
 	}
 
-	/**
-	 * Set the same property on ScheduledExecutorService (JDK 1.7+).
-	 * There is no default. If not set, the executor property is not set.
-	 */
-	public void setRemoveOnCancelPolicy(boolean removeOnCancelPolicy) {
-		this.removeOnCancelPolicy = removeOnCancelPolicy;
-	}
-
 	/**
 	 * Register a list of ScheduledExecutorTask objects with the ScheduledExecutorService
 	 * that this FactoryBean creates. Depending on each ScheduledExecutorTask's settings,
@@ -115,6 +107,15 @@ public class ScheduledExecutorFactoryBean extends ExecutorConfigurationSupport
 		this.scheduledExecutorTasks = scheduledExecutorTasks;
 	}
 
+	/**
+	 * Set the remove-on-cancel mode on {@link ScheduledThreadPoolExecutor} (JDK 7+).
+	 * <p>Default is {@code false}. If set to {@code true}, the target executor will be
+	 * switched into remove-on-cancel mode (if possible, with a soft fallback otherwise).
+	 */
+	public void setRemoveOnCancelPolicy(boolean removeOnCancelPolicy) {
+		this.removeOnCancelPolicy = removeOnCancelPolicy;
+	}
+
 	/**
 	 * Specify whether to continue the execution of a scheduled task
 	 * after it threw an exception.

spring-context/src/main/java/org/springframework/scheduling/concurrent/ThreadPoolTaskScheduler.java

@@ -58,14 +58,14 @@ import org.springframework.util.concurrent.ListenableFutureTask;
 public class ThreadPoolTaskScheduler extends ExecutorConfigurationSupport
 		implements AsyncListenableTaskExecutor, SchedulingTaskExecutor, TaskScheduler {
 
-	// ScheduledThreadPoolExecutor.setRemoveOnCancelPolicy(boolean) only available on JDK 1.7+
+	// ScheduledThreadPoolExecutor.setRemoveOnCancelPolicy(boolean) only available on JDK 7+
 	private static final boolean setRemoveOnCancelPolicyAvailable =
 			ClassUtils.hasMethod(ScheduledThreadPoolExecutor.class, "setRemoveOnCancelPolicy", boolean.class);
 
 
 	private volatile int poolSize = 1;
 
-	private volatile boolean removeOnCancelPolicy;
+	private volatile boolean removeOnCancelPolicy = false;
 
 	private volatile ScheduledExecutorService scheduledExecutor;
 
@@ -86,8 +86,9 @@ public class ThreadPoolTaskScheduler extends ExecutorConfigurationSupport
 	}
 
 	/**
-	 * Set the same property on ScheduledExecutorService (JDK 1.7+).
-	 * There is no default. If not set, the executor property is not set.
+	 * Set the remove-on-cancel mode on {@link ScheduledThreadPoolExecutor} (JDK 7+).
+	 * <p>Default is {@code false}. If set to {@code true}, the target executor will be
+	 * switched into remove-on-cancel mode (if possible, with a soft fallback otherwise).
 	 * <p><b>This setting can be modified at runtime, for example through JMX.</b>
 	 */
 	@UsesJava7
@@ -183,14 +184,17 @@ public class ThreadPoolTaskScheduler extends ExecutorConfigurationSupport
 	}
 
 	/**
-	 * Return the current setting of removeOnCancelPolicy.
-	 * <p>Requires an underlying {@link ScheduledThreadPoolExecutor} and JDK 1.7+.
+	 * Return the current setting for the remove-on-cancel mode.
+	 * <p>Requires an underlying {@link ScheduledThreadPoolExecutor}.
 	 */
 	@UsesJava7
 	public boolean isRemoveOnCancelPolicy() {
+		if (!setRemoveOnCancelPolicyAvailable) {
+			return false;
+		}
 		if (this.scheduledExecutor == null) {
 			// Not initialized yet: return our setting for the time being.
-			return (setRemoveOnCancelPolicyAvailable && this.removeOnCancelPolicy);
+			return this.removeOnCancelPolicy;
 		}
 		return getScheduledThreadPoolExecutor().getRemoveOnCancelPolicy();
 	}

spring-websocket/src/main/java/org/springframework/web/socket/config/annotation/SockJsServiceRegistration.java

@@ -81,11 +81,9 @@ public class SockJsServiceRegistration {
 	 * iframe so that code in the iframe can run from  a domain local to the SockJS
 	 * server. Since the iframe needs to load the SockJS javascript client library,
 	 * this property allows specifying where to load it from.
-	 *
 	 * <p>By default this is set to point to
 	 * "https://cdn.jsdelivr.net/sockjs/0.3.4/sockjs.min.js". However it can
 	 * also be set to point to a URL served by the application.
-	 *
 	 * <p>Note that it's possible to specify a relative URL in which case the URL
 	 * must be relative to the iframe URL. For example assuming a SockJS endpoint
 	 * mapped to "/sockjs", and resulting iframe URL "/sockjs/iframe.html", then the

spring-websocket/src/test/java/org/springframework/web/socket/sockjs/support/SockJsServiceTests.java

@@ -17,12 +17,12 @@
 package org.springframework.web.socket.sockjs.support;
 
 import java.io.IOException;
-
 import javax.servlet.ServletOutputStream;
 import javax.servlet.http.HttpServletResponse;
 
 import org.junit.Before;
 import org.junit.Test;
+
 import org.springframework.http.HttpStatus;
 import org.springframework.http.server.ServerHttpRequest;
 import org.springframework.http.server.ServerHttpResponse;
@@ -55,6 +55,7 @@ public class SockJsServiceTests extends AbstractHttpRequestTests {
 		this.service = new TestSockJsService(new ThreadPoolTaskScheduler());
 	}
 
+
 	@Test
 	public void validateRequest() throws Exception {
 
@@ -76,7 +77,6 @@ public class SockJsServiceTests extends AbstractHttpRequestTests {
 
 	@Test
 	public void handleInfoGet() throws Exception {
-
 		resetResponseAndHandleRequest("GET", "/echo/info", HttpStatus.OK);
 
 		assertEquals("application/json;charset=UTF-8", this.servletResponse.getContentType());
@@ -98,9 +98,7 @@ public class SockJsServiceTests extends AbstractHttpRequestTests {
 				body.substring(body.indexOf(',')));
 	}
 
-	// SPR-11443
-
-	@Test
+	@Test  // SPR-11443
 	public void handleInfoGetCorsFilter() throws Exception {
 
 		// Simulate scenario where Filter would have already set CORS headers
@@ -111,9 +109,7 @@ public class SockJsServiceTests extends AbstractHttpRequestTests {
 		assertEquals("foobar:123", this.servletResponse.getHeader("Access-Control-Allow-Origin"));
 	}
 
-	// SPR-11919
-
-	@Test
+	@Test  // SPR-11919
 	public void handleInfoGetWildflyNPE() throws Exception {
 		HttpServletResponse mockResponse = mock(HttpServletResponse.class);
 		ServletOutputStream ous = mock(ServletOutputStream.class);
@@ -128,9 +124,7 @@ public class SockJsServiceTests extends AbstractHttpRequestTests {
 
 	@Test
 	public void handleInfoOptions() throws Exception {
-
 		this.servletRequest.addHeader("Access-Control-Request-Headers", "Last-Modified");
-
 		resetResponseAndHandleRequest("OPTIONS", "/echo/info", HttpStatus.NO_CONTENT);
 		this.response.flush();
 
@@ -143,7 +137,6 @@ public class SockJsServiceTests extends AbstractHttpRequestTests {
 
 	@Test
 	public void handleIframeRequest() throws Exception {
-
 		resetResponseAndHandleRequest("GET", "/echo/iframe.html", HttpStatus.OK);
 
 		assertEquals("text/html;charset=UTF-8", this.servletResponse.getContentType());
@@ -155,15 +148,12 @@ public class SockJsServiceTests extends AbstractHttpRequestTests {
 
 	@Test
 	public void handleIframeRequestNotModified() throws Exception {
-
 		this.servletRequest.addHeader("If-None-Match", "\"06b486b3208b085d9e3220f456a6caca4\"");
-
 		resetResponseAndHandleRequest("GET", "/echo/iframe.html", HttpStatus.NOT_MODIFIED);
 	}
 
 	@Test
 	public void handleRawWebSocketRequest() throws Exception {
-
 		resetResponseAndHandleRequest("GET", "/echo", HttpStatus.OK);
 		assertEquals("Welcome to SockJS!\n", this.servletResponse.getContentAsString());
 
@@ -174,13 +164,13 @@ public class SockJsServiceTests extends AbstractHttpRequestTests {
 
 	@Test
 	public void handleEmptyContentType() throws Exception {
-
-		servletRequest.setContentType("");
+		this.servletRequest.setContentType("");
 		resetResponseAndHandleRequest("GET", "/echo/info", HttpStatus.OK);
 
 		assertEquals("Invalid/empty content should have been ignored", 200, this.servletResponse.getStatus());
 	}
 
+
 	private void resetResponseAndHandleRequest(String httpMethod, String uri, HttpStatus httpStatus) throws IOException {
 		resetResponse();
 		handleRequest(httpMethod, uri, httpStatus);
@@ -211,14 +201,12 @@ public class SockJsServiceTests extends AbstractHttpRequestTests {
 		@Override
 		protected void handleRawWebSocketRequest(ServerHttpRequest req, ServerHttpResponse res,
 				WebSocketHandler handler) throws IOException {
-
 			this.handler = handler;
 		}
 
 		@Override
 		protected void handleTransportRequest(ServerHttpRequest req, ServerHttpResponse res, WebSocketHandler handler,
 				String sessionId, String transport) throws SockJsException {
-
 			this.sessionId = sessionId;
 			this.transport = transport;
 			this.handler = handler;