Servlet Filter to keep the parameters in right order.

git-svn-id: https://joinup.ec.europa.eu/svn/moa-idspss/trunk@215 d688527b-c9ab-4aba-bd8d-4036d912da1d

1 files changed, 62 insertions, 0 deletions

diff --git a/id.server/src/at/gv/egovernment/moa/id/util/ParameterInOrderFilter.java b/id.server/src/at/gv/egovernment/moa/id/util/ParameterInOrderFilter.java
new file mode 100644
index 000000000..3f5fddba2
--- /dev/null
+++ b/id.server/src/at/gv/egovernment/moa/id/util/ParameterInOrderFilter.java
@@ -0,0 +1,62 @@
+package at.gv.egovernment.moa.id.util;
+
+import java.io.IOException;
+
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServletRequest;
+
+/**
+ * @author rschamberger
+ *  
+ */
+/**
+ * A Filter class wich uses the InOrderServletRequestWrapper to provide servlets a more precise
+ * implementation of the getParameter* family. This implementation cares about the order of the parameters
+ * from Query String and HTTP POST Body. Use this as Filter class for Servlets which such needs.
+ * 
+ * @author Rudolf Schamberger
+ * @version $Id$
+ */
+public class ParameterInOrderFilter implements Filter
+{
+
+  /**
+   * filterConfig
+   */
+  private FilterConfig filterConfig;
+
+  /**
+   * @see javax.servlet.Filter#init(javax.servlet.FilterConfig)
+   */
+  public final void init(final FilterConfig config)
+  {
+    this.filterConfig = config;
+  }
+
+  /**
+   * @see javax.servlet.Filter#destroy()
+   */
+  public final void destroy()
+  {
+  };
+
+  /**
+   * @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse,
+   *      javax.servlet.FilterChain)
+   */
+  public final void doFilter(final ServletRequest request, final ServletResponse response,
+    final FilterChain chain) throws IOException, ServletException
+  {
+    InOrderServletRequestWrapper sRequ = new InOrderServletRequestWrapper((HttpServletRequest) request,
+      filterConfig.getServletContext());
+    //parse the Query (and Body) parameters
+    sRequ.parseParameters((HttpServletRequest) request);
+    //process the rest of filter chain
+    chain.doFilter(sRequ, response);
+  }
+}
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