/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. 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. For additional information regarding
* copyright in this work, please see the NOTICE file in the top level
* directory of this distribution.
*/
package org.apache.abdera.ext.serializer.impl;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;
import java.lang.reflect.AccessibleObject;
import javax.activation.DataHandler;
import org.apache.abdera.ext.serializer.Conventions;
import org.apache.abdera.ext.serializer.ObjectContext;
import org.apache.abdera.ext.serializer.SerializationContext;
import org.apache.abdera.ext.serializer.SerializationException;
import org.apache.abdera.ext.serializer.annotation.Content;
import org.apache.abdera.ext.serializer.annotation.MediaType;
import org.apache.abdera.ext.serializer.annotation.Value;
import org.apache.abdera.model.Div;
import org.apache.abdera.model.Document;
import org.apache.abdera.model.Element;
import org.apache.abdera.model.Content.Type;
import org.apache.abdera.util.Constants;
import org.apache.abdera.writer.StreamWriter;
public class ContentSerializer extends ElementSerializer {
public ContentSerializer() {
super(Constants.CONTENT);
}
protected void init(Object source,
ObjectContext objectContext,
SerializationContext context,
Conventions conventions) {
}
protected void process(Object source,
ObjectContext objectContext,
SerializationContext context,
Conventions conventions) {
Type type = Type.TEXT;
Object contentValue = null;
ObjectContext valueContext = null;
AccessibleObject accessor = objectContext.getAccessor(Value.class, conventions);
if (accessor != null && !(source instanceof Element)) {
contentValue = eval(accessor, source);
valueContext = new ObjectContext(contentValue, source, accessor);
Content _content = valueContext.getAnnotation(Content.class);
type = _content != null ? _content.type() : type;
} else {
Content _content = objectContext.getAnnotation(Content.class);
type = _content != null ? _content.type() : type;
contentValue = source;
valueContext = objectContext;
}
StreamWriter sw = context.getStreamWriter();
sw.startContent(type);
writeAttributes(source, objectContext, context, conventions);
if (type == Type.MEDIA || type == Type.XML) {
String mediatype = null;
AccessibleObject mtaccessor = valueContext.getAccessor(MediaType.class, conventions);
if (mtaccessor != null) {
Object mtvalue = eval(mtaccessor, contentValue);
mediatype = mtvalue != null ? toString(mtvalue) : null;
}
if (mediatype == null) {
MediaType mt = valueContext.getAnnotation(MediaType.class);
mediatype = mt != null && !mt.value().equals(DEFAULT) ? mt.value() : null;
}
if (mediatype != null)
sw.writeAttribute("type", mediatype);
}
switch (type) {
case TEXT:
case HTML:
sw.writeElementText(toString(contentValue));
break;
case XHTML:
Div div = null;
if (contentValue instanceof Div)
div = (Div)contentValue;
else {
div = context.getAbdera().getFactory().newDiv();
div.setValue(toString(contentValue));
}
context.serialize(div, new ObjectContext(div));
break;
case XML:
Element el = null;
if (contentValue instanceof Element)
el = (Element)contentValue;
else {
StringReader sr = new StringReader(toString(contentValue));
Document<Element> doc = context.getAbdera().getParser().parse(sr);
el = doc.getRoot();
}
context.serialize(el, new ObjectContext(el));
break;
case MEDIA:
try {
if (contentValue instanceof DataHandler)
sw.writeElementText((DataHandler)contentValue);
else if (contentValue instanceof InputStream)
sw.writeElementText((InputStream)contentValue);
else
sw.writeElementText(toString(contentValue));
} catch (IOException e) {
throw new SerializationException(e);
}
}
}
}