/**
* 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.cxf.aegis.type.mtom;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.Collection;
import java.util.Iterator;
import javax.activation.DataHandler;
import javax.activation.URLDataSource;
import org.apache.cxf.aegis.DatabindingException;
import org.apache.cxf.aegis.util.UID;
import org.apache.cxf.attachment.AttachmentImpl;
import org.apache.cxf.message.Attachment;
public final class AttachmentUtil {
private AttachmentUtil() {
//utility class
}
public static String createContentID(String ns) {
String uid = UID.generate();
try {
URI uri = new URI(ns);
return uid + "@" + uri;
} catch (URISyntaxException e) {
throw new DatabindingException("Could not create URI for namespace: " + ns);
}
}
public static Attachment getAttachment(String id, Collection<Attachment> attachments) {
if (id == null) {
throw new DatabindingException("Cannot get attachment: null id");
}
int i = id.indexOf("cid:");
if (i != -1) {
id = id.substring(4).trim();
}
if (attachments == null) {
return null;
}
for (Iterator<Attachment> iter = attachments.iterator(); iter.hasNext();) {
Attachment a = iter.next();
if (a.getId().equals(id)) {
return a;
}
}
// Try loading the URL remotely
try {
URLDataSource source = new URLDataSource(new URL(id));
return new AttachmentImpl(id, new DataHandler(source));
} catch (MalformedURLException e) {
return null;
}
}
}