Changed ClientHttpRequestInterceptor array to List

org.springframework.web/src/main/java/org/springframework/http/client/InterceptingClientHttpRequest.java

@@ -18,8 +18,8 @@ package org.springframework.http.client;
 
 import java.io.IOException;
 import java.net.URI;
-import java.util.Arrays;
 import java.util.Iterator;
+import java.util.List;
 
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpMethod;
@@ -36,14 +36,14 @@ class InterceptingClientHttpRequest extends AbstractBufferingClientHttpRequest {
 
 	private final ClientHttpRequestFactory requestFactory;
 
-	private final ClientHttpRequestInterceptor[] interceptors;
+	private final List<ClientHttpRequestInterceptor> interceptors;
 
 	private HttpMethod method;
 
 	private URI uri;
 
 	protected InterceptingClientHttpRequest(ClientHttpRequestFactory requestFactory,
-			ClientHttpRequestInterceptor[] interceptors,
+			List<ClientHttpRequestInterceptor> interceptors,
 			URI uri,
 			HttpMethod method) {
 		this.requestFactory = requestFactory;
@@ -72,7 +72,7 @@ class InterceptingClientHttpRequest extends AbstractBufferingClientHttpRequest {
 		private final Iterator<ClientHttpRequestInterceptor> iterator;
 
 		private RequestExecution() {
-			this.iterator = Arrays.asList(interceptors).iterator();
+			this.iterator = interceptors.iterator();
 		}
 
 		public ClientHttpResponse execute(HttpRequest request, byte[] body) throws IOException {

org.springframework.web/src/main/java/org/springframework/http/client/InterceptingClientHttpRequestFactory.java

@@ -17,9 +17,10 @@
 package org.springframework.http.client;
 
 import java.net.URI;
+import java.util.Collections;
+import java.util.List;
 
 import org.springframework.http.HttpMethod;
-import org.springframework.util.Assert;
 
 /**
  * Wrapper for a {@link ClientHttpRequestFactory} that has support for {@link ClientHttpRequestInterceptor}s.
@@ -29,7 +30,7 @@ import org.springframework.util.Assert;
  */
 public class InterceptingClientHttpRequestFactory extends AbstractClientHttpRequestFactoryWrapper {
 
-	private final ClientHttpRequestInterceptor[] interceptors;
+	private final List<ClientHttpRequestInterceptor> interceptors;
 
 	/**
 	 * Creates a new instance of the {@code InterceptingClientHttpRequestFactory} with the given parameters.
@@ -38,10 +39,9 @@ public class InterceptingClientHttpRequestFactory extends AbstractClientHttpRequ
 	 * @param interceptors the interceptors that are to be applied. Can be {@code null}.
 	 */
 	public InterceptingClientHttpRequestFactory(ClientHttpRequestFactory requestFactory,
-			ClientHttpRequestInterceptor[] interceptors) {
+			List<ClientHttpRequestInterceptor> interceptors) {
 		super(requestFactory);
-		Assert.notNull(requestFactory, "'requestFactory' must not be null");
-		this.interceptors = interceptors != null ? interceptors : new ClientHttpRequestInterceptor[0];
+		this.interceptors = interceptors != null ? interceptors : Collections.<ClientHttpRequestInterceptor>emptyList();
 	}
 
 	@Override

org.springframework.web/src/main/java/org/springframework/http/client/support/InterceptingHttpAccessor.java

@@ -16,10 +16,12 @@
 
 package org.springframework.http.client.support;
 
+import java.util.List;
+
 import org.springframework.http.client.ClientHttpRequestFactory;
 import org.springframework.http.client.ClientHttpRequestInterceptor;
 import org.springframework.http.client.InterceptingClientHttpRequestFactory;
-import org.springframework.util.ObjectUtils;
+import org.springframework.util.CollectionUtils;
 
 /**
  * Base class for {@link org.springframework.web.client.RestTemplate} and other HTTP accessing gateway helpers, adding
@@ -31,26 +33,26 @@ import org.springframework.util.ObjectUtils;
  */
 public abstract class InterceptingHttpAccessor extends HttpAccessor {
 
-	private ClientHttpRequestInterceptor[] interceptors;
+	private List<ClientHttpRequestInterceptor> interceptors;
 
 	/**
 	 * Sets the request interceptors that this accessor should use.
 	 */
-	public void setInterceptors(ClientHttpRequestInterceptor[] interceptors) {
+	public void setInterceptors(List<ClientHttpRequestInterceptor> interceptors) {
 		this.interceptors = interceptors;
 	}
 
 	/**
 	 * Return the request interceptor that this accessor uses.
 	 */
-	public ClientHttpRequestInterceptor[] getInterceptors() {
+	public List<ClientHttpRequestInterceptor> getInterceptors() {
 		return interceptors;
 	}
 
 	@Override
 	public ClientHttpRequestFactory getRequestFactory() {
 		ClientHttpRequestFactory delegate = super.getRequestFactory();
-		if (!ObjectUtils.isEmpty(getInterceptors())) {
+		if (!CollectionUtils.isEmpty(getInterceptors())) {
 			return new InterceptingClientHttpRequestFactory(delegate, getInterceptors());
 		}
 		else {