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// Copyright 2007 The Android Open Source Project
package com.google.wireless.gdata.spreadsheets.parser.xml;
import com.google.wireless.gdata.data.Entry;
import com.google.wireless.gdata.data.Feed;
import com.google.wireless.gdata.data.StringUtils;
import com.google.wireless.gdata.data.XmlUtils;
import com.google.wireless.gdata.parser.ParseException;
import com.google.wireless.gdata.parser.xml.XmlGDataParser;
import com.google.wireless.gdata.spreadsheets.data.ListEntry;
import com.google.wireless.gdata.spreadsheets.data.ListFeed;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import java.io.IOException;
import java.io.InputStream;
/**
* Parser for non-Atom data in a GData Spreadsheets List-based feed.
*/
public class XmlListGDataParser extends XmlGDataParser {
/**
* The rel ID used by the server to identify the URLs for List POSTs
* (updates)
*/
private static final String LIST_FEED_POST_REL =
"http://schemas.google.com/g/2005#post";
/**
* Creates a new XmlListGDataParser.
*
* @param is the stream from which to read the data
* @param xmlParser the XmlPullParser to use to parse the raw XML
* @throws ParseException if the super-class throws one
*/
public XmlListGDataParser(InputStream is, XmlPullParser xmlParser)
throws ParseException {
super(is, xmlParser);
}
/* (non-JavaDoc)
* Creates a new Entry that can handle the data parsed by this class.
*/
protected Entry createEntry() {
return new ListEntry();
}
/* (non-JavaDoc)
* Creates a new Feed that can handle the data parsed by this class.
*/
protected Feed createFeed() {
return new ListFeed();
}
/* (non-JavaDoc)
* Callback to handle non-Atom data present in an Atom entry tag.
*/
protected void handleExtraElementInEntry(Entry entry)
throws XmlPullParserException, IOException {
XmlPullParser parser = getParser();
if (!(entry instanceof ListEntry)) {
throw new IllegalArgumentException("Expected ListEntry!");
}
ListEntry row = (ListEntry) entry;
String name = parser.getName();
row.setValue(name, XmlUtils.extractChildText(parser));
}
/* (non-JavaDoc)
* Callback to handle non-Atom data in the feed.
*/
protected void handleExtraElementInFeed(Feed feed)
throws XmlPullParserException, IOException {
XmlPullParser parser = getParser();
if (!(feed instanceof ListFeed)) {
throw new IllegalArgumentException("Expected ListFeed!");
}
ListFeed listFeed = (ListFeed) feed;
String name = parser.getName();
if (!"link".equals(name)) {
return;
}
// lists store column data in the gsx namespace:
// <gsx:columnheader>data</gsx:columnheader>
// The columnheader tag names are the scrubbed values of the first row.
// We extract them all and store them as keys in a Map.
int numAttrs = parser.getAttributeCount();
String rel = null;
String href = null;
String attrName = null;
for (int i = 0; i < numAttrs; ++i) {
attrName = parser.getAttributeName(i);
if ("rel".equals(attrName)) {
rel = parser.getAttributeValue(i);
} else if ("href".equals(attrName)) {
href = parser.getAttributeValue(i);
}
}
if (!(StringUtils.isEmpty(rel) || StringUtils.isEmpty(href))) {
if (LIST_FEED_POST_REL.equals(rel)) {
listFeed.setEditUri(href);
}
}
}
}
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