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Subject: svn commit: r263802 -
 /forrest/trunk/whiteboard/plugins/org.apache.forrest.plugin.internal.view/src/java/org/apache/forrest/plugin/internal/view/acting/RecursiveDirectoryTraversalAction.java
Date: Sun, 28 Aug 2005 03:19:09 -0000
To: svn@forrest.apache.org
From: thorsten@apache.org

Author: thorsten
Date: Sat Aug 27 20:19:04 2005
New Revision: 263802

URL: http://svn.apache.org/viewcvs?rev=263802&view=rev
Log:
Added a more specific action for resolving recursive fallbacks

Added:
    forrest/trunk/whiteboard/plugins/org.apache.forrest.plugin.internal.view/src/java/org/apache/forrest/plugin/internal/view/acting/RecursiveDirectoryTraversalAction.java   (with props)

Added: forrest/trunk/whiteboard/plugins/org.apache.forrest.plugin.internal.view/src/java/org/apache/forrest/plugin/internal/view/acting/RecursiveDirectoryTraversalAction.java
URL: http://svn.apache.org/viewcvs/forrest/trunk/whiteboard/plugins/org.apache.forrest.plugin.internal.view/src/java/org/apache/forrest/plugin/internal/view/acting/RecursiveDirectoryTraversalAction.java?rev=263802&view=auto
==============================================================================
--- forrest/trunk/whiteboard/plugins/org.apache.forrest.plugin.internal.view/src/java/org/apache/forrest/plugin/internal/view/acting/RecursiveDirectoryTraversalAction.java (added)
+++ forrest/trunk/whiteboard/plugins/org.apache.forrest.plugin.internal.view/src/java/org/apache/forrest/plugin/internal/view/acting/RecursiveDirectoryTraversalAction.java Sat Aug 27 20:19:04 2005
@@ -0,0 +1,288 @@
+/*
+ * Copyright 1999-2004 The Apache Software Foundation or its licensors,
+ * as applicable.
+ * 
+ * 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.forrest.plugin.internal.view.acting;
+
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.apache.avalon.framework.parameters.Parameters;
+import org.apache.avalon.framework.service.ServiceException;
+import org.apache.avalon.framework.service.ServiceManager;
+import org.apache.avalon.framework.service.Serviceable;
+import org.apache.avalon.framework.thread.ThreadSafe;
+import org.apache.cocoon.acting.ServiceableAction;
+import org.apache.cocoon.environment.Redirector;
+import org.apache.excalibur.source.Source;
+import org.apache.excalibur.source.SourceResolver;
+
+/**
+ * Selects the first of a set of Sources that exists in the context.
+ * <p>
+ * For example, we could define a SourceExistsSelector with:
+ * 
+ * <pre>
+ * 
+ *  &lt;map:selector name=&quot;exists&quot;
+ *                logger=&quot;sitemap.selector.source-exists&quot;
+ *                src=&quot;org.apache.cocoon.selection.SourceExistsSelector&quot; /&gt;
+ *  
+ * </pre>
+ * 
+ * And use it to build a PDF from XSL:FO or a higher-level XML format with:
+ * 
+ * <pre>
+ * 
+ *   &lt;map:match pattern=&quot;**.pdf&quot;&gt;
+ *     &lt;map:select type=&quot;exists&quot;&gt;
+ *        &lt;map:when test=&quot;context/xdocs/{1}.fo&quot;&gt;
+ *           &lt;map:generate src=&quot;content/xdocs/{1}.fo&quot; /&gt;
+ *        &lt;/map:when&gt;
+ *        &lt;map:otherwise&gt;
+ *          &lt;map:generate src=&quot;content/xdocs/{1}.xml&quot; /&gt;
+ *          &lt;map:transform src=&quot;stylesheets/document2fo.xsl&quot; /&gt;
+ *        &lt;/map:otherwise&gt;
+ *     &lt;/map:select&gt;
+ *     &lt;map:serialize type=&quot;fo2pdf&quot; /&gt;
+ *  
+ * </pre>
+ */
+public class RecursiveDirectoryTraversalAction extends ServiceableAction
+        implements ThreadSafe, Serviceable {
+
+    SourceResolver resolver = null;
+    HashMap map = new HashMap();
+
+    private String request, projectFallback, projectExtension, projectDir,
+            rest;
+
+    /**
+     * Set the current <code>ComponentManager</code> instance used by this
+     * <code>Composable</code>.
+     * 
+     * @throws ServiceException
+     */
+
+    public void service(ServiceManager manager) throws ServiceException {
+        this.resolver = (SourceResolver) manager.lookup(SourceResolver.ROLE);
+    }
+
+    /*
+     * (non-Javadoc)
+     * 
+     * @see org.apache.cocoon.acting.Action#act(org.apache.cocoon.environment.Redirector,
+     *      org.apache.cocoon.environment.SourceResolver, java.util.Map,
+     *      java.lang.String, org.apache.avalon.framework.parameters.Parameters)
+     */
+    public Map act(Redirector redirector,
+            org.apache.cocoon.environment.SourceResolver resolver,
+            Map objectModel, String source, Parameters parameters)
+            throws Exception {
+        this.prepare(parameters, source);
+        String uri = this.getProjectDir() + this.getRequest()
+                + this.getProjectExtension();
+        Map returnMap = act(uri);
+        return returnMap;
+    }
+    
+    /** Return a Map if Source 'uri' resolves and exists. */
+    public Map act(String uri) {
+        Source src = null;
+
+        // The locationmap module will return null if there is no match for
+        // the supplied hint, without the following the URI will be resolved to
+        // the context root, which always exists, but does not contain a valid
+        // resource.
+        if (uri == null || uri == "") {
+            return null;
+        }
+
+        try {
+            this.computeResponseURI(uri, src);
+            //src = resolver.resolveURI(uri);
+            if (this.map.containsKey("uri")) {
+                return this.map;
+            } else {
+                return null;
+            }
+        } catch (MalformedURLException e) {
+            getLogger().warn(
+                    "Selector URL '" + uri + "' is not a valid Source URL");
+            return null;
+        } catch (IOException e) {
+            getLogger().warn(
+                    "Error reading from source '" + uri + "': "
+                            + e.getMessage());
+            return null;
+        } finally {
+            resolver.release(src);
+        }
+    }
+
+    /**
+     * @param resolver
+     * @param uri
+     *            *viewSelector* project-xdocs will return which view is
+     *            responsible for the requested path. If no view
+     *            (choice|fallback) could be found the template will return the
+     *            viewFallback (resources/views/default.fv).
+     * 
+     * ex.: 1.request: index First choice: index.fv First/last fallback:
+     * default.fv
+     * 
+     * 2.request: sample/index First choice: sample/index.fv First fallback:
+     * sample/default.fv Last fallback: default.fv
+     * 
+     * 3.request: sample/subdir/index First choice: sample/subdir/index.fv First
+     * fallback: sample/subdir/default.fv Second fallback: sample/default.fv
+     * Last fallback: default.fv
+     * 
+     * ...
+     * 
+     * des.: The parent view (root-view) inherits to its children until a child
+     * is overriding this view. This override can be used for directories
+     * (default.fv) and/or files (*.fv). That means that the root view is the
+     * default view as long no other view can be found in the requested child.
+     * @throws IOException
+     * @throws MalformedURLException
+     *  
+     */
+    private void computeResponseURI(String uri, Source src)
+            throws MalformedURLException, IOException {
+        src = resolver.resolveURI(uri);
+        if (src.exists()) {
+            this.map.put("uri", uri);
+        } else {
+            if (this.getRest().lastIndexOf("/") > -1) {
+                this.setRest(this.getRest().substring(0,
+                        this.getRest().lastIndexOf("/")));
+                uri = this.getProjectDir() + this.getRest() + "/"
+                        + this.getProjectFallback()
+                        + this.getProjectExtension();
+                this.computeResponseURI(uri, src);
+            } else {
+                uri = this.getProjectDir() + this.getProjectFallback()
+                        + this.getProjectExtension();
+                src = resolver.resolveURI(uri);
+                if (src.exists()) {
+                    this.map.put("uri", uri);
+                }
+            }
+        }
+    }
+
+    public void prepare(Parameters parameters, String src) {
+        this.setRequest(parameters.getParameter("request", src));
+        this.setProjectFallback(parameters.getParameter("projectFallback",
+                src));
+        this.setProjectExtension(parameters.getParameter("projectExtension",
+                src));
+        this.setProjectDir(parameters.getParameter("projectDir", src));
+        this.setRest(this.getRequest());
+    }
+
+    /**
+     * @return Returns the projectDir.
+     */
+    public String getProjectDir() {
+        return projectDir;
+    }
+
+    /**
+     * @param projectDir
+     *            The projectDir to set.
+     */
+    public void setProjectDir(String projectDir) {
+        this.projectDir = projectDir;
+    }
+
+    /**
+     * @return Returns the projectExtension.
+     */
+    public String getProjectExtension() {
+        return projectExtension;
+    }
+
+    /**
+     * @param projectExtension
+     *            The projectExtension to set.
+     */
+    public void setProjectExtension(String projectExtension) {
+        this.projectExtension = projectExtension;
+    }
+
+    /**
+     * @return Returns the projectFallback.
+     */
+    public String getProjectFallback() {
+        return projectFallback;
+    }
+
+    /**
+     * @param projectFallback
+     *            The projectFallback to set.
+     */
+    public void setProjectFallback(String projectFallback) {
+        this.projectFallback = projectFallback;
+    }
+
+    /**
+     * @return Returns the request.
+     */
+    public String getRequest() {
+        return request;
+    }
+
+    /**
+     * @param request
+     *            The request to set.
+     */
+    public void setRequest(String request) {
+        this.request = request;
+    }
+
+    /**
+     * @return Returns the resolver.
+     */
+    public SourceResolver getResolver() {
+        return resolver;
+    }
+
+    /**
+     * @param resolver
+     *            The resolver to set.
+     */
+    public void setResolver(SourceResolver resolver) {
+        this.resolver = resolver;
+    }
+
+    /**
+     * @return Returns the rest.
+     */
+    public String getRest() {
+        return rest;
+    }
+
+    /**
+     * @param rest
+     *            The rest to set.
+     */
+    public void setRest(String rest) {
+        this.rest = rest;
+    }
+}

Propchange: forrest/trunk/whiteboard/plugins/org.apache.forrest.plugin.internal.view/src/java/org/apache/forrest/plugin/internal/view/acting/RecursiveDirectoryTraversalAction.java
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