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/*
* 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.tuscany.sca.binding.gdata.provider;
import java.util.Date;
import org.apache.tuscany.sca.data.collection.Entry;
import org.apache.tuscany.sca.data.collection.Item;
import org.apache.tuscany.sca.databinding.Mediator;
import org.apache.tuscany.sca.interfacedef.DataType;
import com.google.gdata.data.DateTime;
import com.google.gdata.data.PlainTextConstruct;
import com.google.gdata.data.TextContent;
/**
* Utility methods used in this package.
*
* @version $Rev$ $Date$
*/
class GdataBindingUtil {
/**
* Create a data item from an GData entry.
*
* @param feedEntry
* @param itemClassType
* @param itemXMLType
* @param mediator
* @return
*/
static Entry<Object, Object> entry(com.google.gdata.data.Entry feedEntry,
DataType<?> itemClassType,
DataType<?> itemXMLType,
Mediator mediator) {
if (feedEntry != null) {
if (itemClassType.getPhysical() == Item.class) {
String key = feedEntry.getId().toString();
Item item = new Item();
item.setTitle(feedEntry.getTitle().toString());
TextContent content = (TextContent)feedEntry.getContent();
item.setContents(content.getContent().getPlainText());
for (com.google.gdata.data.Link link : feedEntry.getLinks()) {
if (link.getRel() == null || "self".equals(link.getRel())) {
if (item.getLink() == null) {
item.setLink(link.getHref().toString());
}
} else if ("related".equals(link.getRel())) {
item.setRelated(link.getHref().toString());
} else if ("alternate".equals(link.getRel())) {
item.setAlternate(link.getHref().toString());
}
}
Date date = new Date(feedEntry.getUpdated().getValue());
item.setDate(date);
return new Entry<Object, Object>(key, item);
} else {
String key = null;
if (feedEntry.getId() != null) {
key = feedEntry.getId();
}
// Create the item from XML
if (feedEntry.getContent() == null) {
return null;
}
TextContent content = (TextContent)feedEntry.getContent();
String value = content.getContent().getPlainText();
Object data = mediator.mediate(value, itemXMLType, itemClassType, null);
return new Entry<Object, Object>(key, data);
}
} else {
return null;
}
}
/**
* Create an Gdata entry for a key and item from a collection.
*
* @param entry
* @param itemClassType
* @param itemXMLType
* @param mediator
* @param factory
* @return
*/
static com.google.gdata.data.Entry feedEntry(Entry<Object, Object> entry,
DataType<?> itemClassType,
DataType<?> itemXMLType,
Mediator mediator) {
Object key = entry.getKey();
Object data = entry.getData();
if (data instanceof Item) {
Item item = (Item)data;
com.google.gdata.data.Entry feedEntry = new com.google.gdata.data.Entry();
if (key != null) {
feedEntry.setId(key.toString());
}
feedEntry.setTitle(new PlainTextConstruct(item.getTitle()));
feedEntry.setContent(new PlainTextConstruct(item.getContents()));
String href = item.getLink();
if (href == null && key != null) {
href = key.toString();
}
if (href != null) {
feedEntry.addHtmlLink(href, "", "");
}
String related = item.getRelated();
if (related != null) {
feedEntry.addHtmlLink(related, "", "related");
}
String alternate = item.getAlternate();
if (alternate != null) {
feedEntry.addHtmlLink(alternate, "", "alternate");
}
Date date = item.getDate();
if (date != null) {
DateTime datetime = new DateTime(date);
feedEntry.setUpdated(datetime);
}
return feedEntry;
} else if (data != null) {
com.google.gdata.data.Entry feedEntry = new com.google.gdata.data.Entry();
feedEntry.setId(key.toString());
feedEntry.setTitle(new PlainTextConstruct("item"));
// Convert the item to XML
String value = mediator.mediate(data, itemClassType, itemXMLType, null).toString();
// Might be wrong because the example uses XML datatype, I am using
// plainText here
feedEntry.setContent(new PlainTextConstruct(value));
feedEntry.addHtmlLink(key.toString(), "", "");
return feedEntry;
} else {
return null;
}
}
}
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