svn commit: r469932 - in /struts/sandbox/trunk/tiles/tiles-core/src/main/java/org/apache/tiles/context/jsp: ./ JspTilesRequestContext.java

[dd...@apache.org]

Author: ddewolf
Date: Wed Nov  1 07:31:06 2006
New Revision: 469932

URL: http://svn.apache.org/viewvc?view=rev&rev=469932
Log:
Adding Jsp PageContext based implementation of the RequestContext interface. This will be useful when migrating the tags to use the container.

Added:
    struts/sandbox/trunk/tiles/tiles-core/src/main/java/org/apache/tiles/context/jsp/
    struts/sandbox/trunk/tiles/tiles-core/src/main/java/org/apache/tiles/context/jsp/JspTilesRequestContext.java   (with props)

Added: struts/sandbox/trunk/tiles/tiles-core/src/main/java/org/apache/tiles/context/jsp/JspTilesRequestContext.java
URL: http://svn.apache.org/viewvc/struts/sandbox/trunk/tiles/tiles-core/src/main/java/org/apache/tiles/context/jsp/JspTilesRequestContext.java?view=auto&rev=469932
==============================================================================
--- struts/sandbox/trunk/tiles/tiles-core/src/main/java/org/apache/tiles/context/jsp/JspTilesRequestContext.java (added)
+++ struts/sandbox/trunk/tiles/tiles-core/src/main/java/org/apache/tiles/context/jsp/JspTilesRequestContext.java Wed Nov  1 07:31:06 2006
@@ -0,0 +1,116 @@
+/*
+ * $Id$
+ *
+ * Copyright 1999-2006 The Apache Software Foundation.
+ *
+ * Licensed 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 org.apache.tiles.context.jsp;
+
+import org.apache.tiles.TilesRequestContext;
+import org.apache.tiles.TilesException;
+import org.apache.tiles.context.servlet.ServletTilesRequestContext;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+import javax.servlet.jsp.PageContext;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
+import java.lang.reflect.Method;
+import java.lang.reflect.InvocationTargetException;
+import java.io.IOException;
+
+/**
+ * Context implementation used for executing tiles within a
+ * jsp tag library.
+ *
+ */
+public class JspTilesRequestContext extends ServletTilesRequestContext
+        implements TilesRequestContext {
+
+    private static final Log LOG =
+        LogFactory.getLog(JspTilesRequestContext.class);
+
+    /**
+     * JSP 2.0 include method to use which supports configurable flushing.
+     */
+    private static Method include = null;
+
+    /**
+     * Initialize the include variable with the
+     * JSP 2.0 method if available.
+     */
+    static {
+        try {
+            // get version of include method with flush argument
+            Class[] args = new Class[]{String.class, boolean.class};
+            include = PageContext.class.getMethod("include", args);
+        } catch (NoSuchMethodException e) {
+            LOG.debug("Could not find JSP 2.0 include method.  Using old one that doesn't support " +
+                    "configurable flushing.", e);
+        }
+    }
+
+    private PageContext pageContext;
+
+    public JspTilesRequestContext(ServletContext context, PageContext pageContext) {
+        super(context,
+              (HttpServletRequest)pageContext.getRequest(),
+              (HttpServletResponse)pageContext.getResponse());
+        this.pageContext = pageContext;
+    }
+
+
+
+    public void include(String path) throws TilesException {
+        try {
+            include(path, false);
+        } catch (IOException e) {
+            throw new TilesException(e);
+        } catch (ServletException e) {
+            throw new TilesException(e);
+        }
+    }
+
+     /**
+     * Do an include of specified page using PageContext.include().
+     * <p/>
+     * This method is used by the Tiles package when an include is required.
+     * The Tiles package can use indifferently any form of this method.
+     *
+     * @param path   Uri or Definition name to forward.
+     * @param flush If the writer should be flushed before the include
+     * @throws javax.servlet.ServletException - Thrown by call to pageContext.include()
+     * @throws java.io.IOException      - Thrown by call to pageContext.include()
+     */
+    public void include(String path, boolean flush) throws IOException, ServletException {
+
+        try {
+            // perform include with new JSP 2.0 method that supports flushing
+            if (include != null) {
+                include.invoke(pageContext, path, flush);
+                return;
+            }
+        } catch (IllegalAccessException e) {
+            LOG.debug("Could not find JSP 2.0 include method.  Using old one.", e);
+        } catch (InvocationTargetException e) {
+            LOG.debug("Unable to execute JSP 2.0 include method.  Trying old one.", e);
+        }
+
+        pageContext.include(path);
+    }
+
+
+}

Propchange: struts/sandbox/trunk/tiles/tiles-core/src/main/java/org/apache/tiles/context/jsp/JspTilesRequestContext.java
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Propchange: struts/sandbox/trunk/tiles/tiles-core/src/main/java/org/apache/tiles/context/jsp/JspTilesRequestContext.java
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