org.apache.wicket.util.resource.PackageResourceStream Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of org.ops4j.pax.wicket.service Show documentation

Pax Wicket Service is an OSGi extension of the Wicket framework, allowing for dynamic loading and unloading of Wicket components and pageSources.

There is a newer version: 5.0.0

Show newest version

/*
 * 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.wicket.util.resource;

import java.io.IOException;
import java.io.InputStream;

import org.apache.wicket.Application;
import org.apache.wicket.WicketRuntimeException;
import org.apache.wicket.util.lang.Packages;
import org.apache.wicket.util.resource.locator.IResourceStreamLocator;
import org.apache.wicket.util.time.Time;


/**
 * An {@link IResourceStream} that reads data from a resource in the classpath. It simply delegates
 * all operations to the {@link IResourceStream} returned by the application's
 * {@link IResourceStreamLocator}.
 * 
 * @author Jean-Baptiste Quenot
 */
public class PackageResourceStream extends AbstractResourceStream
{
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	IResourceStream resourceStream;

	/**
	 * Obtains an {@link IResourceStream} from the application's
	 * {@link IResourceStreamLocator#locate(Class, String)}
	 * 
	 * @param scope
	 *            This argument will be used to get the class loader for loading the package
	 *            resource, and to determine what package it is in.
	 * @param path
	 *            The path to the resource
	 */
	public PackageResourceStream(Class scope, String path)
	{
		String absolutePath = Packages.absolutePath(scope, path);
		resourceStream = Application.get().getResourceSettings().getResourceStreamLocator().locate(
			scope, absolutePath, null, null, null);

		if (resourceStream == null)
		{
			throw new WicketRuntimeException("Cannot find resource with " + scope.getName() +
				" and path " + path);
		}
	}

	public void close() throws IOException
	{
		resourceStream.close();
	}

	@Override
	public String getContentType()
	{
		return resourceStream.getContentType();
	}

	public InputStream getInputStream() throws ResourceStreamNotFoundException
	{
		return resourceStream.getInputStream();
	}

	@Override
	public long length()
	{
		return resourceStream.length();
	}

	@Override
	public Time lastModifiedTime()
	{
		return resourceStream.lastModifiedTime();
	}
}