/* | |
* 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.axis2.datasource.jaxb; | |
import org.apache.axiom.om.OMException; | |
import org.apache.axiom.util.stax.xop.MimePartProvider; | |
import org.apache.axis2.jaxws.i18n.Messages; | |
import org.apache.commons.logging.Log; | |
import org.apache.commons.logging.LogFactory; | |
import javax.activation.DataHandler; | |
import javax.xml.bind.attachment.AttachmentUnmarshaller; | |
import java.io.ByteArrayOutputStream; | |
import java.io.IOException; | |
import java.io.InputStream; | |
/** | |
* Implementation of the {@link AttachmentUnmarshaller} class that handles the attachments provided | |
* by Axiom through the {@link MimePartProvider} interface. It should be noted that while Axiom only | |
* handles attachments referenced using XOP, {@link AttachmentUnmarshaller} is also used to retrieve | |
* attachments from SwA messages. Hence the {@link #getDataHandlerForSwA(String)} method. | |
*/ | |
public final class JAXBAttachmentUnmarshaller extends AttachmentUnmarshaller { | |
private static final Log log = LogFactory.getLog(JAXBAttachmentUnmarshaller.class); | |
private final AttachmentContext context; | |
private final MimePartProvider mimePartProvider; | |
public JAXBAttachmentUnmarshaller(AttachmentContext context, MimePartProvider mimePartProvider) { | |
this.context = context; | |
this.mimePartProvider = mimePartProvider; | |
} | |
public final boolean isXOPPackage() { | |
// Any message that is received might contain MTOM. | |
// So always return true. | |
boolean value = true; | |
if (log.isDebugEnabled()){ | |
log.debug("isXOPPackage returns " + value); | |
} | |
return value; | |
} | |
public final byte[] getAttachmentAsByteArray(String cid) { | |
if (log.isDebugEnabled()) { | |
log.debug("Attempting to retrieve attachment [" + cid + "] as a byte[]"); | |
} | |
DataHandler dh = getAttachmentAsDataHandler(cid); | |
if (dh != null) { | |
try { | |
return convert(dh); | |
} catch (IOException ioe) { | |
if (log.isDebugEnabled()) { | |
log.debug("Exception occurred while getting the byte[] " + ioe); | |
} | |
throw new OMException(ioe); | |
} | |
} | |
if (log.isDebugEnabled()) { | |
log.debug("returning null byte[]"); | |
} | |
return null; | |
} | |
public final DataHandler getAttachmentAsDataHandler(String cid) { | |
if (log.isDebugEnabled()) { | |
log.debug("Attempting to retrieve attachment [" + cid + "] as a DataHandler"); | |
} | |
DataHandler dh = getDataHandler(cid); | |
if (dh != null) { | |
return dh; | |
} else { | |
String cid2 = getNewCID(cid); | |
if (log.isDebugEnabled()) { | |
log.debug("A dataHandler was not found for [" + cid + "] trying [" + cid2 + "]"); | |
} | |
dh = getDataHandler(cid2); | |
if (dh != null) { | |
return dh; | |
} | |
} | |
// No Data Handler found | |
throw new OMException(Messages.getMessage("noDataHandler", cid)); | |
} | |
/** | |
* @param cid | |
* @return cid with translated characters | |
*/ | |
private String getNewCID(String cid) { | |
String cid2 = cid; | |
try { | |
cid2 = java.net.URLDecoder.decode(cid, "UTF-8"); | |
} catch (Exception e) { | |
if (log.isDebugEnabled()) { | |
log.debug("getNewCID decoding " + cid + " as UTF-8 decoding error: " + e); | |
} | |
} | |
return cid2; | |
} | |
/** | |
* Read the bytes from the DataHandler | |
* | |
* @param dh | |
* @return byte[] | |
* @throws IOException | |
*/ | |
private byte[] convert(DataHandler dh) throws IOException { | |
if (log.isDebugEnabled()) { | |
log.debug("Reading byte[] from DataHandler " + dh); | |
} | |
InputStream is = dh.getInputStream(); | |
if (log.isDebugEnabled()) { | |
log.debug("DataHandler InputStream " + is); | |
} | |
ByteArrayOutputStream baos = new ByteArrayOutputStream(); | |
byte[] b = new byte[1024]; | |
int num = is.read(b); | |
if (log.isDebugEnabled()) { | |
if (num <= 0) { | |
log.debug("DataHandler InputStream contains no data. num=" + num); | |
} | |
} | |
while (num > 0) { | |
baos.write(b, 0, num); | |
num = is.read(b); | |
} | |
return baos.toByteArray(); | |
} | |
private DataHandler getDataHandler(String cid) { | |
String blobcid = cid; | |
if (blobcid.startsWith("cid:")) { | |
blobcid = blobcid.substring(4); | |
} | |
DataHandler dh; | |
try { | |
dh = mimePartProvider.getDataHandler(blobcid); | |
} catch (IllegalArgumentException ex) { | |
dh = null; | |
} catch (IOException ex) { | |
throw new OMException("Failed to load attachment with content ID " + blobcid, ex); | |
} | |
if (dh == null) { | |
dh = context.getDataHandlerForSwA(blobcid); | |
} | |
if (dh != null) { | |
JAXBAttachmentUnmarshallerMonitor.addBlobCID(blobcid); | |
} | |
return dh; | |
} | |
} |