/*******************************************************************************
* Copyright (c) 1998, 2008 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Oracle - initial API and implementation from Oracle TopLink
******************************************************************************/
package org.eclipse.persistence.internal.oxm;
import javax.activation.DataHandler;
import org.eclipse.persistence.mappings.converters.Converter;
import org.eclipse.persistence.oxm.XMLConstants;
import org.eclipse.persistence.oxm.attachment.XMLAttachmentUnmarshaller;
import org.eclipse.persistence.oxm.mappings.XMLBinaryDataCollectionMapping;
import org.eclipse.persistence.oxm.mappings.converters.XMLConverter;
import org.eclipse.persistence.oxm.record.UnmarshalRecord;
import org.eclipse.persistence.mappings.DatabaseMapping;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
/**
* INTERNAL:
* <p><b>Purpose:</b>This class is a content handler that specifically handles the "Include" element in an mtom style
* attachment.
* @author mmacivor
*/
public class XMLBinaryAttachmentHandler extends UnmarshalRecord {
UnmarshalRecord record;
DatabaseMapping mapping;
String c_id = null;
Converter converter;
NodeValue nodeValue;
boolean isCollection = false;
private static final String INCLUDE_ELEMENT_NAME = "Include";
private static final String HREF_ATTRIBUTE_NAME = "href";
public XMLBinaryAttachmentHandler(UnmarshalRecord unmarshalRecord, NodeValue nodeValue, DatabaseMapping mapping, Converter converter, boolean isCollection) {
super(null);
record = unmarshalRecord;
this.mapping = mapping;
this.nodeValue = nodeValue;
this.converter = converter;
this.isCollection = isCollection;
}
@Override
public void characters(char[] ch, int offset, int length) throws SAXException {
//we don't care about characters here. Probably a whitespace
}
@Override
public void startElement(String namespaceURI, String localName, String qName, Attributes atts) throws SAXException {
if(XMLConstants.XOP_URL.equals(namespaceURI) && (INCLUDE_ELEMENT_NAME.equals(localName) || INCLUDE_ELEMENT_NAME.equals(qName))) {
this.c_id = atts.getValue("", HREF_ATTRIBUTE_NAME);
} else {
//Return control to the UnmarshalRecord
record.getXMLReader().setContentHandler(record);
record.startElement(namespaceURI, localName, qName, atts);
}
}
@Override
public void endElement(String namespaceURI, String localName, String qName) throws SAXException {
if(XMLConstants.XOP_URL.equals(namespaceURI) && (INCLUDE_ELEMENT_NAME.equals(localName) || INCLUDE_ELEMENT_NAME.equals(qName))) {
//Get the attachment and set it in the object.
XMLAttachmentUnmarshaller attachmentUnmarshaller = record.getUnmarshaller().getAttachmentUnmarshaller();
Object data = null;
Class attributeClassification = null;
if(isCollection) {
attributeClassification = ((XMLBinaryDataCollectionMapping)mapping).getCollectionContentType();
} else {
attributeClassification = mapping.getAttributeClassification();
}
if(attributeClassification.equals(XMLBinaryDataHelper.getXMLBinaryDataHelper().DATA_HANDLER)) {
data = attachmentUnmarshaller.getAttachmentAsDataHandler(this.c_id);
} else {
data = attachmentUnmarshaller.getAttachmentAsByteArray(this.c_id);
}
if (this.converter != null) {
Converter converter = this.converter;
if (converter instanceof XMLConverter) {
data = ((XMLConverter) converter).convertDataValueToObjectValue(data, record.getSession(), record.getUnmarshaller());
} else {
data = converter.convertDataValueToObjectValue(data, record.getSession());
}
}
data = XMLBinaryDataHelper.getXMLBinaryDataHelper().convertObject(data, mapping.getAttributeClassification(), record.getSession());
//check for collection case
if (isCollection) {
if(data != null) {
record.addAttributeValue((ContainerValue)nodeValue, data);
}
} else {
record.setAttributeValue(data, mapping);
}
//Return control to the UnmarshalRecord
record.getXMLReader().setContentHandler(record);
} else {
record.getXMLReader().setContentHandler(record);
record.endElement(namespaceURI, localName, qName);
}
}
public void processingInstruction(String target, String data) throws SAXException {
}
public String getCID() {
return this.c_id;
}
public Object getObjectValueFromDataHandler(DataHandler handler, Class cls) {
return XMLBinaryDataHelper.getXMLBinaryDataHelper().convertObject(handler, cls, record.getSession());
}
}