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package org.madore.damlengine;
import java.util.regex.Pattern;
import java.security.MessageDigest;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.xpath.*;
import org.w3c.dom.*;
import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.LSSerializer;
// import org.xml.sax.EntityResolver;
public final class WeblogPopulate {
private WeblogPopulate() { // Forbid instantiation
throw new AssertionError("WeblogPopulate cannot be instantiated");
}
public static final String toHex(byte[] digest) {
StringBuilder sb = new StringBuilder();
for ( byte b : digest )
sb.append(String.format("%02x", b));
return sb.toString();
}
public static void main(String[] args)
throws Exception {
final DocumentBuilder db = DamlEngine.GetDocumentBuilder.db;
if ( args.length == 0 ) {
System.err.println("expecting filename as argument");
}
final DOMImplementationLS domi
= (DOMImplementationLS)(db.getDOMImplementation());
LSSerializer ser = domi.createLSSerializer();
ser.getDomConfig().setParameter("xml-declaration", false);
MessageDigest sha1 = MessageDigest.getInstance("SHA-1");
final Connection conn = WeblogDatabaseConnection.getConnection();
final PreparedStatement checkSt
= conn.prepareStatement("SELECT sha1 FROM entries WHERE id=?");
final PreparedStatement insertSt
= conn.prepareStatement("INSERT INTO entries(id,edate,lang,title,title_xml,content,sha1) VALUES (?,?,?,?,?::xml,?::xml,?)");
final PreparedStatement updateSt
= conn.prepareStatement("UPDATE entries SET (edate,mdate,lang,title,title_xml,content,sha1)=(?,DEFAULT,?,?,?::xml,?::xml,?) WHERE id=?");
final PreparedStatement clearCatSt
= conn.prepareStatement("DELETE FROM incat WHERE id=?");
final PreparedStatement setCatSt
= conn.prepareStatement("INSERT INTO incat(id,code) VALUES (?,?)");
for (String fname : args) {
Document doc = db.parse(fname);
XPathFactory xpf = XPathFactory.newInstance();
XPath xp = xpf.newXPath();
xp.setNamespaceContext(new DamlEngine.DamlNSMapping());
XPathExpression expr = xp.compile("//d:weblog/d:entry");
XPathExpression texpr = xp.compile("d:title");
NodeList entries = (NodeList)(expr.evaluate(doc, XPathConstants.NODESET));
for ( int i=0 ; i<entries.getLength() ; i++ ) {
Element ent = (Element)(entries.item(i));
String idStr = ent.getAttributeNS(null, "number");
if ( ! Pattern.matches("^\\d{4}$", idStr) )
throw new IllegalArgumentException("entry number attribute must be of the form NNNN");
int id = Integer.parseInt(idStr);
String date = ent.getAttributeNS(null, "date");
if ( ! Pattern.matches("^\\d{4}-\\d{2}-\\d{2}$", date) )
throw new IllegalArgumentException("entry date attribute must be of the form YYYY-MM-DD");
String catStr = ent.getAttributeNS(null, "cat");
String[] catList = catStr.split("\\s+");
String lang = LangHelper.getLangRec(ent);
String content = ser.writeToString(ent);
sha1.reset();
String digest = toHex(sha1.digest(content.getBytes("UTF-8")));
checkSt.setInt(1, id);
ResultSet checkRes = checkSt.executeQuery();
boolean exists = checkRes.next();
if ( exists && checkRes.getString(1).equals(digest) )
continue;
Node titleNode = (Node)(texpr.evaluate(ent, XPathConstants.NODE));
String titleTxt = (titleNode != null) ? titleNode.getTextContent() : null;
String titleXml = (titleNode != null) ? ser.writeToString(titleNode) : null;
conn.setAutoCommit(false);
if ( exists ) {
System.err.println("Updating entry "+id);
updateSt.setString(1, date);
updateSt.setString(2, lang);
updateSt.setString(3, titleTxt);
updateSt.setString(4, titleXml);
updateSt.setString(5, content);
updateSt.setString(6, digest);
updateSt.executeUpdate();
} else {
System.err.println("Registering entry "+id);
insertSt.setInt(1, id);
insertSt.setString(2, date);
insertSt.setString(3, lang);
insertSt.setString(4, titleTxt);
insertSt.setString(5, titleXml);
insertSt.setString(6, content);
insertSt.setString(7, digest);
insertSt.executeUpdate();
}
clearCatSt.setInt(1, id);
clearCatSt.executeUpdate();
for ( String cat : catList ) {
if ( ! cat.equals("") ) {
setCatSt.setInt(1, id);
setCatSt.setString(2, cat);
setCatSt.executeUpdate();
}
}
conn.commit();
}
}
checkSt.close();
insertSt.close();
updateSt.close();
clearCatSt.close();
setCatSt.close();
conn.close();
}
}
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