MetaDataXmlParser.java

package org.commcare.xml;

import org.commcare.data.xml.TransactionParser;
import org.javarosa.xml.util.InvalidStructureException;
import org.javarosa.xml.util.UnfullfilledRequirementsException;
import org.kxml2.io.KXmlParser;
import org.xmlpull.v1.XmlPullParserException;

import java.io.IOException;

/**
 * @author ctsims
 */
public class MetaDataXmlParser extends TransactionParser<String[]> {

    public MetaDataXmlParser(KXmlParser parser) {
        super(parser);
    }

    @Override
    protected void commit(String[] data) throws IOException {
        //nothing;
    }

    @Override
    public String[] parse() throws InvalidStructureException, IOException, XmlPullParserException, UnfullfilledRequirementsException {
        this.checkNode("meta");

        String lastModified = null;
        String uid = null;

        while (this.nextTagInBlock("meta")) {
            String item = this.parser.getName();
            if (item == null) {
                continue;
            }
            if ("timestart".equals(item.toLowerCase())) {
                String start = parser.nextText().trim();
                //Only update modified if time end hasn't set it
                if (lastModified == null || "".equals(lastModified)) {
                    lastModified = start;
                }
            } else if ("timeend".equals(item.toLowerCase())) {
                String end = parser.nextText().trim();
                if (!"".equals(end)) {
                    lastModified = end;
                }
            }

            //Ugh. this will make this 2.0 and 1.N compatible, which isn't awesome, but we'll split out versioning later...
            else if ("uid".equals(item.toLowerCase()) || "instanceid".equals(item.toLowerCase())) {
                uid = parser.nextText().trim();
            }
        }
        String[] ret = new String[]{lastModified, uid};
        commit(ret);
        return ret;
    }

}