--- /dev/null
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package javax.servlet;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.Locale;
+
+/**
+ * Provides a convenient implementation of the ServletResponse interface that
+ * can be subclassed by developers wishing to adapt the response from a Servlet.
+ * This class implements the Wrapper or Decorator pattern. Methods default to
+ * calling through to the wrapped response object.
+ *
+ * @since v 2.3
+ * @see javax.servlet.ServletResponse
+ */
+public class ServletResponseWrapper implements ServletResponse {
+ private ServletResponse response;
+
+ /**
+ * Creates a ServletResponse adaptor wrapping the given response object.
+ *
+ * @throws java.lang.IllegalArgumentException
+ * if the response is null.
+ */
+ public ServletResponseWrapper(ServletResponse response) {
+ if (response == null) {
+ throw new IllegalArgumentException("Response cannot be null");
+ }
+ this.response = response;
+ }
+
+ /**
+ * Return the wrapped ServletResponse object.
+ */
+ public ServletResponse getResponse() {
+ return this.response;
+ }
+
+ /**
+ * Sets the response being wrapped.
+ *
+ * @throws java.lang.IllegalArgumentException
+ * if the response is null.
+ */
+ public void setResponse(ServletResponse response) {
+ if (response == null) {
+ throw new IllegalArgumentException("Response cannot be null");
+ }
+ this.response = response;
+ }
+
+ /**
+ * The default behavior of this method is to call
+ * setCharacterEncoding(String charset) on the wrapped response object.
+ *
+ * @since 2.4
+ */
+ @Override
+ public void setCharacterEncoding(String charset) {
+ this.response.setCharacterEncoding(charset);
+ }
+
+ /**
+ * The default behavior of this method is to return getCharacterEncoding()
+ * on the wrapped response object.
+ */
+ @Override
+ public String getCharacterEncoding() {
+ return this.response.getCharacterEncoding();
+ }
+
+ /**
+ * The default behavior of this method is to return getOutputStream() on the
+ * wrapped response object.
+ */
+ @Override
+ public ServletOutputStream getOutputStream() throws IOException {
+ return this.response.getOutputStream();
+ }
+
+ /**
+ * The default behavior of this method is to return getWriter() on the
+ * wrapped response object.
+ */
+ @Override
+ public PrintWriter getWriter() throws IOException {
+ return this.response.getWriter();
+ }
+
+ /**
+ * The default behavior of this method is to call setContentLength(int len)
+ * on the wrapped response object.
+ */
+ @Override
+ public void setContentLength(int len) {
+ this.response.setContentLength(len);
+ }
+
+ /**
+ * The default behavior of this method is to call setContentLength(long len)
+ * on the wrapped response object.
+ */
+ @Override
+ public void setContentLengthLong(long length) {
+ this.response.setContentLengthLong(length);
+ }
+
+ /**
+ * The default behavior of this method is to call setContentType(String
+ * type) on the wrapped response object.
+ */
+ @Override
+ public void setContentType(String type) {
+ this.response.setContentType(type);
+ }
+
+ /**
+ * The default behavior of this method is to return getContentType() on the
+ * wrapped response object.
+ *
+ * @since 2.4
+ */
+ @Override
+ public String getContentType() {
+ return this.response.getContentType();
+ }
+
+ /**
+ * The default behavior of this method is to call setBufferSize(int size) on
+ * the wrapped response object.
+ */
+ @Override
+ public void setBufferSize(int size) {
+ this.response.setBufferSize(size);
+ }
+
+ /**
+ * The default behavior of this method is to return getBufferSize() on the
+ * wrapped response object.
+ */
+ @Override
+ public int getBufferSize() {
+ return this.response.getBufferSize();
+ }
+
+ /**
+ * The default behavior of this method is to call flushBuffer() on the
+ * wrapped response object.
+ */
+ @Override
+ public void flushBuffer() throws IOException {
+ this.response.flushBuffer();
+ }
+
+ /**
+ * The default behavior of this method is to return isCommitted() on the
+ * wrapped response object.
+ */
+ @Override
+ public boolean isCommitted() {
+ return this.response.isCommitted();
+ }
+
+ /**
+ * The default behavior of this method is to call reset() on the wrapped
+ * response object.
+ */
+ @Override
+ public void reset() {
+ this.response.reset();
+ }
+
+ /**
+ * The default behavior of this method is to call resetBuffer() on the
+ * wrapped response object.
+ */
+ @Override
+ public void resetBuffer() {
+ this.response.resetBuffer();
+ }
+
+ /**
+ * The default behavior of this method is to call setLocale(Locale loc) on
+ * the wrapped response object.
+ */
+ @Override
+ public void setLocale(Locale loc) {
+ this.response.setLocale(loc);
+ }
+
+ /**
+ * The default behavior of this method is to return getLocale() on the
+ * wrapped response object.
+ */
+ @Override
+ public Locale getLocale() {
+ return this.response.getLocale();
+ }
+
+ /**
+ * @param wrapped
+ * @since Servlet 3.0 TODO SERVLET3 - Add comments
+ */
+ public boolean isWrapperFor(ServletResponse wrapped) {
+ if (response == wrapped) {
+ return true;
+ }
+ if (response instanceof ServletResponseWrapper) {
+ return ((ServletResponseWrapper) response).isWrapperFor(wrapped);
+ }
+ return false;
+ }
+
+ /**
+ * @param wrappedType
+ * @since Servlet 3.0 TODO SERVLET3 - Add comments
+ */
+ public boolean isWrapperFor(Class<?> wrappedType) {
+ if (wrappedType.isAssignableFrom(response.getClass())) {
+ return true;
+ }
+ if (response instanceof ServletResponseWrapper) {
+ return ((ServletResponseWrapper) response).isWrapperFor(wrappedType);
+ }
+ return false;
+ }
+
+}
projects / gigi.git / blobdiff