/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.servlet.util;
import java.io.IOException;
import java.io.InputStream;
import javax.servlet.Servlet;
import javax.servlet.ServletException;
import org.apache.cocoon.servletservice.AbsoluteServletConnection;
import org.apache.cocoon.servletservice.Absolutizable;
public class ServletServiceUtils {
/**
* Get an {@link InputStream} of a Servlet that is a servlet-service as defined by the Cocoon Servlet-Service
* framework.
*
* @param servlet The Servlet-Service reference.
* @param resourcePath The absolute resource path.
* @return An InputStream of the resource.
* @throws ServletServiceException If any problem occurs, this unchecked exception is thrown.
*/
public static InputStream getServletServiceResource(Servlet servlet, String resourcePath) {
return getServletServiceResource(servlet, resourcePath, null);
}
/**
* Get an {@link InputStream} of a Servlet that is a servlet-service as defined by the Cocoon Servlet-Service
* framework.
*
* @param servlet The Servlet-Service reference.
* @param resourcePath The absolute resource path.
* @param query The query string.
* @return An InputStream of the resource.
* @throws ServletServiceException If any problem occurs, this unchecked exception is thrown.
*/
public static InputStream getServletServiceResource(Servlet servlet, String resourcePath, String query) {
String resultResourcePath = resourcePath;
if (resultResourcePath.length() > 0 && !resultResourcePath.startsWith("/")) {
resultResourcePath = "/" + resultResourcePath;
}
Absolutizable a;
try {
a = (Absolutizable) servlet.getServletConfig().getServletContext();
} catch (ClassCastException cce) {
throw new ServletServiceException("The passed servlet isn't a servlet service because it can't be cast to "
+ Absolutizable.class.getName() + ".", cce);
}
AbsoluteServletConnection sc = new AbsoluteServletConnection(a.getServiceName(), resultResourcePath, query);
try {
return sc.getInputStream();
} catch (IOException e) {
throw new ServletServiceException(e);
} catch (ServletException e) {
throw new ServletServiceException(e);
}
}
/**
* A general purpose {@link RuntimeException} that is used to indicate any problem with accessing a servlet-service.
*/
public static class ServletServiceException extends RuntimeException {
private static final long serialVersionUID = 1L;
public ServletServiceException(String message, Throwable t) {
super(message, t);
}
public ServletServiceException(Throwable t) {
super(t);
}
}
}