Author: giacomo
Date: Tue Feb 8 04:08:22 2005
New Revision: 152669
URL: http://svn.apache.org/viewcvs?view=rev&rev=152669
Log:
Added input module that resolves to a real path similar to the
RealPathModules but by use of a SourceResolver instead of the
Context object (which always resolves to the context path). This allows
to mount apps external of the servlet context path and still have a
correct real path resolved in respect to the sitemap calling the module.
As I couldn't fix the RealPathModule in a backward compatible way,
becasuse {realpath:/} and {realpath:.} both resolve to the context
root whereas {contextpath:/} resolves to the context root but
{contextpath:.} resolves to the path of the respective sitemap, I've
choosen to create a new Module for it.
Added:
cocoon/trunk/src/java/org/apache/cocoon/components/modules/input/ContextPathModule.java
Modified:
cocoon/trunk/src/webapp/WEB-INF/xconf/cocoon-core.xconf
Added:
cocoon/trunk/src/java/org/apache/cocoon/components/modules/input/ContextPathModule.java
URL:
http://svn.apache.org/viewcvs/cocoon/trunk/src/java/org/apache/cocoon/components/modules/input/ContextPathModule.java?view=auto&rev=152669
==============================================================================
---
cocoon/trunk/src/java/org/apache/cocoon/components/modules/input/ContextPathModule.java
(added)
+++
cocoon/trunk/src/java/org/apache/cocoon/components/modules/input/ContextPathModule.java
Tue Feb 8 04:08:22 2005
@@ -0,0 +1,135 @@
+/*
+ * Copyright 1999-2004 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.cocoon.components.modules.input;
+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.configuration.Configuration;
+import org.apache.avalon.framework.configuration.ConfigurationException;
+import org.apache.avalon.framework.thread.ThreadSafe;
+import org.apache.excalibur.source.SourceResolver;
+
+import java.io.IOException;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.Vector;
+
+/**
+ * ContextRealPathModule provides a real filesystem path for a virtual
+ * context-relative path. If this mapping cannot be performed (e.g. Cocoon is
+ * running in a .war file), <code>null</code> will be returned. Compared to
+ * the [EMAIL PROTECTED] RealPathModule} this module is able to provide the
"real" absolute
+ * path even if the application is mounted outside the webapp tree of Cocoon.
+ * <p>
+ * Note: the primary use for this is to support external code that wants a
+ * filesystem path. For example, The FOP 0.20.x serializer doesn't like
+ * relative image paths, and doesn't understand Cocoon URLs (context:, cocoon:
+ * etc). So we pass the *2fo.xsl stylesheet a real filesystem path to where we
+ * keep our images:
+ * </p>
+ * <p>
+ * A absolute path argument like {contextrealpath:/resources} will be resolved
+ * from the root context path (ie. COCOON_HOME/build/webapp) whereas a relative
+ * path attribute like {contextrealpath:./resources} will be resolved from the
+ * location of the sitemap that uses it. If that sitemap is mounted outside the
+ * usual COCOON_HOME/build/webapp the path resolved with this modules points to
+ * the correct location.
+ * </p>
+ * <p>
+ * <pre>
+ * <map:transform src="skins/{forrest:skin}/xslt/fo/document2fo.xsl">
+ * <map:parameter name="basedir" value="{contextrealpath:resources}/"/>
+ * </map:transform>
+ *
+ * And then prepend this to all image paths:
+ * ...
+ * <xsl:param name="basedir" select="''"/>
+ * ...
+ * <xsl:template match="img">
+ * <xsl:variable name="imgpath" select="concat($basedir, @src)"/>
+ * <fo:external-graphic src="{$imgpath}" ...
+ * ...
+ * </xsl:template>
+ * </pre>
+ * </p>
+ *
+ * @author <a href="mailto:giacomo at apache dor org">Giacomo Pati</a>
+ * @version CVS $Id: RealPathModule.java 30932 2004-07-29 17:35:38Z vgritsenko
$
+ */
+public class ContextPathModule extends AbstractInputModule implements
Serviceable, ThreadSafe {
+
+ private ServiceManager m_manager;
+ private SourceResolver m_resolver;
+
+ final static Vector returnNames;
+ static {
+ Vector tmp = new Vector();
+ tmp.add("contextPath");
+ returnNames = tmp;
+ }
+
+ /** (non-Javadoc)
+ * * @see Serviceable#service(ServiceManager)
+ * */
+ public void service(ServiceManager manager) throws ServiceException {
+ m_manager = manager;
+ m_resolver = (SourceResolver) m_manager.lookup(SourceResolver.ROLE);
+ }
+
+ /** (non-Javadoc)
+ *
+ * @see org.apache.avalon.framework.activity.Disposable#dispose()
+ *
+ */
+ public void dispose() {
+ super.dispose();
+ if ( this.m_manager != null ) {
+ this.m_manager.release( this.m_resolver );
+ this.m_manager = null;
+ this.m_resolver = null;
+ }
+ }
+
+ public Object getAttribute( String name, Configuration modeConf, Map
objectModel ) throws ConfigurationException {
+ try {
+ if(name.startsWith("/")) {
+ return
m_resolver.resolveURI("context:/"+name).getURI().substring("file:".length());
+ }
+ return
m_resolver.resolveURI(name).getURI().substring("file:".length());
+ } catch( final IOException mue ) {
+ throw new ConfigurationException( "Cannot resolve realpath", mue);
+ }
+ }
+
+ public Iterator getAttributeNames( Configuration modeConf, Map objectModel
) throws ConfigurationException {
+
+ return ContextPathModule.returnNames.iterator();
+ }
+
+
+ public Object[] getAttributeValues( String name, Configuration modeConf,
Map objectModel )
+ throws ConfigurationException {
+
+ List values = new LinkedList();
+ values.add( this.getAttribute(name, modeConf, objectModel) );
+
+ return values.toArray();
+ }
+}
Modified: cocoon/trunk/src/webapp/WEB-INF/xconf/cocoon-core.xconf
URL:
http://svn.apache.org/viewcvs/cocoon/trunk/src/webapp/WEB-INF/xconf/cocoon-core.xconf?view=diff&r1=152668&r2=152669
==============================================================================
--- cocoon/trunk/src/webapp/WEB-INF/xconf/cocoon-core.xconf (original)
+++ cocoon/trunk/src/webapp/WEB-INF/xconf/cocoon-core.xconf Tue Feb 8 04:08:22
2005
@@ -182,6 +182,7 @@
</component-instance>
<component-instance logger="core.modules.input" name="nullinput"
class="org.apache.cocoon.components.modules.input.NullInputModule"/>
<component-instance logger="core.modules.input" name="realpath"
class="org.apache.cocoon.components.modules.input.RealPathModule"/>
+ <component-instance logger="core.modules.input" name="contextpath"
class="org.apache.cocoon.components.modules.input.ContextPathModule"/>
<component-instance logger="core.modules.input" name="naming"
class="org.apache.cocoon.components.modules.input.NamingInputModule">
</component-instance>
<component-instance logger="core.modules.input" name="cocoon-properties"
class="org.apache.cocoon.components.modules.input.PropertiesFileModule">
