From f57cf463136e48be471a680f2cf08c90d0bf82be Mon Sep 17 00:00:00 2001
From: bgamard <benjamin.gamard@sword-group.com>
Date: Thu, 9 Nov 2017 13:36:10 +0100
Subject: [PATCH] Closes #146: no cache

---
 .../sismics/util/filter/RequestContextFilter.java   | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/docs-web-common/src/main/java/com/sismics/util/filter/RequestContextFilter.java b/docs-web-common/src/main/java/com/sismics/util/filter/RequestContextFilter.java
index b106a4e1..f54b843c 100644
--- a/docs-web-common/src/main/java/com/sismics/util/filter/RequestContextFilter.java
+++ b/docs-web-common/src/main/java/com/sismics/util/filter/RequestContextFilter.java
@@ -12,6 +12,7 @@ import javax.servlet.ServletException;
 import javax.servlet.ServletRequest;
 import javax.servlet.ServletResponse;
 import javax.servlet.http.HttpServletResponse;
+import javax.ws.rs.core.HttpHeaders;
 
 import com.lowagie.text.FontFactory;
 import org.apache.log4j.Level;
@@ -97,6 +98,7 @@ public class RequestContextFilter implements Filter {
         tx.begin();
         
         try {
+            addCacheHeaders(response);
             filterChain.doFilter(request, response);
         } catch (Exception e) {
             ThreadLocalContext.cleanup();
@@ -151,4 +153,15 @@ public class RequestContextFilter implements Filter {
 
         ThreadLocalContext.cleanup();
     }
+
+    /**
+     * Add no-cache header.
+     *
+     * @param response Response
+     */
+    private void addCacheHeaders(ServletResponse response) {
+        HttpServletResponse r = (HttpServletResponse) response;
+        r.addHeader(HttpHeaders.CACHE_CONTROL, "no-cache");
+        r.addHeader(HttpHeaders.EXPIRES, "0");
+    }
 }