org.apache.cxf.aegis.type.basic.Base64Type Maven / Gradle / Ivy
/**
* 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.basic;
import java.io.ByteArrayOutputStream;
import java.io.CharArrayWriter;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import org.apache.cxf.aegis.Context;
import org.apache.cxf.aegis.DatabindingException;
import org.apache.cxf.aegis.type.Type;
import org.apache.cxf.aegis.type.mtom.AbstractXOPType;
import org.apache.cxf.aegis.type.mtom.ByteArrayType;
import org.apache.cxf.aegis.xml.MessageReader;
import org.apache.cxf.aegis.xml.MessageWriter;
import org.apache.cxf.common.util.Base64Exception;
import org.apache.cxf.common.util.Base64Utility;
/**
* Converts back and forth to byte[] objects.
* There is a co-routine between this class and the MTOM ByteArrayType. This class can accept either
* inline base64 or an MTOM attachment. It passes the problem over the ByteArrayType for the later.
* @author Dan Diephouse
*/
public class Base64Type extends Type {
private AbstractXOPType optimizedType;
public Base64Type() {
super();
// no MTOM for this type.
optimizedType = new ByteArrayType(false, null);
}
public Base64Type(AbstractXOPType xopType) {
super();
optimizedType = xopType;
}
@Override
public Object readObject(MessageReader mreader, Context context) throws DatabindingException {
boolean mtomEnabled = context.isMtomEnabled();
XMLStreamReader reader = mreader.getXMLStreamReader();
ByteArrayOutputStream bos = new ByteArrayOutputStream();
try {
reader.next();
while (!reader.isCharacters() && !reader.isEndElement() && !reader.isStartElement()) {
reader.next();
}
if (reader.isStartElement() && reader.getName().equals(AbstractXOPType.XOP_INCLUDE)) {
if (mtomEnabled) {
return optimizedType.readMtoM(mreader, context);
} else {
throw new DatabindingException("Unexpected element: " + reader.getName());
}
}
if (reader.isEndElement()) {
reader.next();
return new byte[0];
}
CharArrayWriter writer = new CharArrayWriter(2048);
while (reader.isCharacters()) {
writer.write(reader.getTextCharacters(),
reader.getTextStart(),
reader.getTextLength());
reader.next();
}
Base64Utility.decode(writer.toCharArray(), 0, writer.size(), bos);
while (reader.getEventType() != XMLStreamConstants.END_ELEMENT) {
reader.next();
}
// Advance just past the end element
reader.next();
return bos.toByteArray();
} catch (Base64Exception e) {
throw new DatabindingException("Could not parse base64Binary data.", e);
} catch (XMLStreamException e) {
throw new DatabindingException("Could not parse base64Binary data.", e);
}
}
@Override
public void writeObject(Object object,
MessageWriter writer,
Context context) throws DatabindingException {
boolean mtomEnabled = context.isMtomEnabled();
if (mtomEnabled) {
optimizedType.writeObject(object, writer, context);
return;
}
byte[] data = (byte[])object;
if (data != null && data.length > 0) {
writer.writeValue(Base64Utility.encode(data));
}
}
}