mirror of
https://github.com/haraldk/TwelveMonkeys.git
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Harald Kuhr
90 lines
3.4 KiB
Java
Executable File
90 lines
3.4 KiB
Java
Executable File
/*
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* Copyright (c) 2008, Harald Kuhr
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name "TwelveMonkeys" nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.twelvemonkeys.util;
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.URL;
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import java.net.URLConnection;
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/**
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* URLResource class description.
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*
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* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
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* @author last modified by $Author: haku $
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* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/util/URLResource.java#1 $
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*/
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final class URLResource extends AbstractResource {
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// NOTE: For the time being, we rely on the URL class (and helpers) to do
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// some smart caching and reuse of connections...
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// TODO: Change the implementation if this is a problem
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private long lastModified = -1;
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/**
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* Creates a {@code URLResource}.
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*
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* @param pResourceId the resource id
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* @param pURL the URL resource
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*/
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public URLResource(Object pResourceId, URL pURL) {
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super(pResourceId, pURL);
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}
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private URL getURL() {
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return (URL) wrappedResource;
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}
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public URL asURL() {
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return getURL();
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}
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public InputStream asStream() throws IOException {
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URLConnection connection = getURL().openConnection();
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connection.setAllowUserInteraction(false);
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connection.setUseCaches(true);
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return connection.getInputStream();
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}
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public long lastModified() {
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try {
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URLConnection connection = getURL().openConnection();
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connection.setAllowUserInteraction(false);
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connection.setUseCaches(true);
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connection.setIfModifiedSince(lastModified);
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lastModified = connection.getLastModified();
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}
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catch (IOException ignore) {
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}
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return lastModified;
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}
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}
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