
org.fabric3.api.host.stream.UrlSource Maven / Gradle / Ivy
/*
* Fabric3
* Copyright (c) 2009-2015 Metaform Systems
*
* 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.fabric3.api.host.stream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import org.fabric3.api.host.util.FileHelper;
/**
* Provides a content stream for for an artifact referenced by a URL.
*/
public class UrlSource implements Source {
private String systemId;
private URL url;
public UrlSource(URL url) {
systemId = url.toString();
this.url = url;
}
public UrlSource(String systemId, URL url) {
this.systemId = systemId;
this.url = url;
}
public String getSystemId() {
return systemId;
}
public URL getBaseLocation() {
return url;
}
public InputStream openStream() throws IOException {
URLConnection connection = url.openConnection();
connection.setUseCaches(false);
return connection.getInputStream();
}
public Source getImportSource(String parentLocation, String importLocation) throws IOException {
String baseLocation = parentLocation != null ? parentLocation : getSystemId();
String resolvedLocation = FileHelper.resolveRelativePath(baseLocation, importLocation);
// assuming the resolved location is also a proper URL
URL importURL = new URL(resolvedLocation);
return new UrlSource(importURL);
}
}