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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
ApplicationSpecificationInitializer.java | 100% | 100% | 100% | 100% |
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// Copyright 2004, 2005 The Apache Software Foundation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package org.apache.tapestry.services.impl;
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import javax.servlet.ServletContext;
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import javax.servlet.http.HttpServlet;
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import org.apache.commons.logging.Log;
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import org.apache.hivemind.Resource;
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import org.apache.hivemind.util.ContextResource;
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import org.apache.tapestry.parse.ISpecificationParser;
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import org.apache.tapestry.services.ApplicationGlobals;
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import org.apache.tapestry.services.ApplicationInitializer;
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import org.apache.tapestry.services.ClasspathResourceFactory;
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import org.apache.tapestry.spec.ApplicationSpecification;
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import org.apache.tapestry.spec.IApplicationSpecification;
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/**
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* Locates the application specification and informs the
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* {@link org.apache.tapestry.services.ServletInfo}service about it.
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*
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* @author Howard Lewis Ship
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* @since 3.1
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*/
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public class ApplicationSpecificationInitializer implements ApplicationInitializer |
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{ |
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private Log _log;
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private ClasspathResourceFactory _classpathResourceFactory;
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private ApplicationGlobals _globals;
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private ISpecificationParser _parser;
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public static final String APP_SPEC_PATH_PARAM = "org.apache.tapestry.application-specification"; |
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public void initialize(HttpServlet servlet) |
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{ |
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IApplicationSpecification spec = null;
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Resource specResource = findApplicationSpecification(servlet); |
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if (specResource == null) |
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{ |
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_log.debug(ImplMessages.noApplicationSpecification(servlet)); |
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spec = constructStandinSpecification(servlet); |
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} |
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else
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spec = _parser.parseApplicationSpecification(specResource); |
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_globals.store(servlet, spec); |
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} |
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private Resource findApplicationSpecification(HttpServlet servlet)
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{ |
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String path = servlet.getInitParameter(APP_SPEC_PATH_PARAM); |
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if (path != null) |
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return _classpathResourceFactory.newResource(path);
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ServletContext context = servlet.getServletContext(); |
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String servletName = servlet.getServletName(); |
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String expectedName = servletName + ".application";
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Resource webInfLocation = new ContextResource(context, "/WEB-INF/"); |
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Resource webInfAppLocation = webInfLocation.getRelativeResource(servletName + "/");
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Resource result = check(webInfAppLocation, expectedName); |
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if (result != null) |
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return result;
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return check(webInfLocation, expectedName);
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} |
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private Resource check(Resource resource, String name)
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{ |
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Resource result = resource.getRelativeResource(name); |
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if (_log.isDebugEnabled())
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_log.debug("Checking for existence of " + result);
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if (result.getResourceURL() != null) |
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{ |
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_log.debug("Found " + result);
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return result;
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} |
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return null; |
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} |
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private IApplicationSpecification constructStandinSpecification(HttpServlet servlet)
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{ |
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String servletName = servlet.getServletName(); |
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ApplicationSpecification result = new ApplicationSpecification();
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// Pretend the file exists in the most common expected location.
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Resource virtualLocation = new ContextResource(servlet.getServletContext(), "/WEB-INF/" |
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+ servletName + ".application");
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result.setSpecificationLocation(virtualLocation); |
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result.setName(servletName); |
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return result;
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} |
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public void setClasspathResourceFactory(ClasspathResourceFactory factory) |
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{ |
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_classpathResourceFactory = factory; |
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} |
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public void setLog(Log log) |
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{ |
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_log = log; |
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} |
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public void setGlobals(ApplicationGlobals globals) |
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{ |
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_globals = globals; |
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} |
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public void setParser(ISpecificationParser parser) |
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{ |
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_parser = parser; |
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} |
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} |
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