/* | |
* 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.om.OMText; | |
import org.apache.axiom.om.impl.MTOMXMLStreamWriter; | |
import org.apache.axiom.om.impl.llom.OMTextImpl; | |
import org.apache.axis2.Constants; | |
import org.apache.axis2.Constants.Configuration; | |
import org.apache.axis2.context.MessageContext; | |
import org.apache.axis2.transport.http.HTTPConstants; | |
import org.apache.commons.logging.Log; | |
import org.apache.commons.logging.LogFactory; | |
import javax.activation.DataHandler; | |
import javax.mail.MessagingException; | |
import javax.mail.internet.InternetHeaders; | |
import javax.mail.internet.MimeBodyPart; | |
import javax.mail.internet.MimePartDataSource; | |
import javax.xml.bind.attachment.AttachmentMarshaller; | |
import javax.xml.stream.XMLStreamWriter; | |
/** | |
* An implementation of the JAXB AttachmentMarshaller that is used to handle binary data from JAXB | |
* and create populate the appropriate constructs on the MessageContext | |
*/ | |
public class JAXBAttachmentMarshaller extends AttachmentMarshaller { | |
private static final Log log = LogFactory.getLog(JAXBAttachmentMarshaller.class); | |
private MessageContext msgContext; | |
private XMLStreamWriter writer; | |
private static final String APPLICATION_OCTET = "application/octet-stream"; | |
/** | |
* Construct the JAXBAttachmentMarshaller that has access to the MessageContext | |
* @param msgContext | |
* @param writer | |
*/ | |
public JAXBAttachmentMarshaller(MessageContext msgContext, XMLStreamWriter writer) { | |
this.msgContext = msgContext; | |
this.writer = writer; | |
} | |
/** | |
* Override isXOPPackaget to calculate the isXOPPackage setting | |
*/ | |
public boolean isXOPPackage() { | |
boolean value = false; | |
// For outbound messages, only trigger MTOM if | |
// the message is mtom enabled. | |
value = isMTOMEnabled(); | |
// If the writer is not an MTOM XMLStreamWriter then we don't have | |
// any place to store the attachment | |
if (!(writer instanceof MTOMXMLStreamWriter)) { | |
if (log.isDebugEnabled()) { | |
log.debug("The writer is not enabled for MTOM. " + | |
"MTOM values will not be optimized"); | |
} | |
value = false; | |
} | |
if (log.isDebugEnabled()){ | |
log.debug("isXOPPackage returns " + value); | |
} | |
return value; | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.bind.attachment.AttachmentMarshaller#addMtomAttachment(byte[], int, int, java.lang.String, java.lang.String, java.lang.String) | |
*/ | |
public String addMtomAttachment(byte[] data, int offset, int length, | |
String mimeType, String namespace, String localPart) { | |
if (offset != 0 || length != data.length) { | |
int len = length - offset; | |
byte[] newData = new byte[len]; | |
System.arraycopy(data, offset, newData, 0, len); | |
data = newData; | |
} | |
if (mimeType == null || mimeType.length() == 0) { | |
mimeType = APPLICATION_OCTET; | |
} | |
if (log.isDebugEnabled()){ | |
log.debug("Adding MTOM/XOP byte array attachment for element: " + | |
"{" + namespace + "}" + localPart); | |
} | |
String cid = null; | |
try { | |
// Create MIME Body Part | |
InternetHeaders ih = new InternetHeaders(); | |
ih.setHeader(HTTPConstants.HEADER_CONTENT_TYPE, mimeType); | |
MimeBodyPart mbp = new MimeBodyPart(ih, data); | |
//Create a data source for the MIME Body Part | |
MimePartDataSource mpds = new MimePartDataSource(mbp); | |
long dataLength =data.length; | |
Integer value = null; | |
if (msgContext != null) { | |
value = (Integer) msgContext.getProperty(Constants.Configuration.MTOM_THRESHOLD); | |
} | |
int optimizedThreshold = (value != null) ? value.intValue() : 0; | |
if(optimizedThreshold==0 || dataLength > optimizedThreshold){ | |
DataHandler dataHandler = new DataHandler(mpds); | |
cid = addDataHandler(dataHandler); | |
} | |
// Add the content id to the mime body part | |
mbp.setHeader(HTTPConstants.HEADER_CONTENT_ID, cid); | |
} catch (MessagingException e) { | |
throw new OMException(e); | |
} | |
return cid == null ? null : "cid:" + cid; | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.bind.attachment.AttachmentMarshaller#addMtomAttachment(javax.activation.DataHandler, java.lang.String, java.lang.String) | |
*/ | |
public String addMtomAttachment(DataHandler data, String namespace, String localPart) { | |
if (log.isDebugEnabled()){ | |
log.debug("Adding MTOM/XOP datahandler attachment for element: " + | |
"{" + namespace + "}" + localPart); | |
} | |
String cid = addDataHandler(data); | |
return cid == null ? null : "cid:" + cid; | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.bind.attachment.AttachmentMarshaller#addSwaRefAttachment(javax.activation.DataHandler) | |
*/ | |
public String addSwaRefAttachment(DataHandler data) { | |
if (log.isDebugEnabled()){ | |
log.debug("Adding SWAREF attachment"); | |
} | |
String cid = addDataHandler(data); | |
setDoingSWA(); | |
return "cid:" + cid; | |
} | |
/** | |
* Add the DataHandler to the writer and context | |
* @param dh | |
* @return | |
*/ | |
private String addDataHandler(DataHandler dh) { | |
String cid = null; | |
OMText textNode = null; | |
// If this is an MTOMXMLStreamWriter then inform the writer | |
// that it must write out this attchment (I guess we should do this | |
// even if the attachment is SWAREF ?) | |
if (writer instanceof MTOMXMLStreamWriter) { | |
textNode = new OMTextImpl(dh, null); | |
if(((MTOMXMLStreamWriter) writer).isOptimizedThreshold(textNode)){ | |
cid = textNode.getContentID(); | |
((MTOMXMLStreamWriter) writer).writeOptimized(textNode); | |
// Remember the attachment on the message. | |
addDataHandler(dh, cid); | |
} | |
} | |
if (log.isDebugEnabled()){ | |
log.debug(" content id=" + cid); | |
log.debug(" dataHandler =" + dh); | |
} | |
return cid; | |
} | |
/** | |
* @return if MTOM enabled calculated from the context information | |
*/ | |
public boolean isMTOMEnabled() { | |
if (msgContext == null) { | |
return false; | |
} else { | |
String value = (String) msgContext.getProperty(Configuration.ENABLE_MTOM); | |
return ("true".equalsIgnoreCase(value)); | |
} | |
} | |
/** | |
* Indicate on the context that SWA attachments are encountered | |
*/ | |
public void setDoingSWA() { | |
if (msgContext != null) { | |
msgContext.setDoingSwA(true); | |
msgContext.setProperty(Configuration.ENABLE_SWA, "true"); | |
} | |
} | |
/** | |
* Inform the context that an Attachment (DataHandler, CID) is written. | |
* @param dh | |
* @param cid | |
*/ | |
public void addDataHandler(DataHandler dh, String cid) { | |
if (msgContext != null) { | |
msgContext.addAttachment(cid, dh); | |
} | |
} | |
} |